Daikin FTKS20DVMW(L) Service Manual

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Service manual (205 pages)

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Table of Contents

Quick Links

Service

Manual

Inverter Pair

Wall Mounted Type D-Series

[Applied Models]

!Inverter Pair : Cooling Only

!Inverter Pair : Heat Pump

SiENBE04-507A

Table of Contents

Troubleshooting

Summary of Contents for Daikin FTKS20DVMW(L)

Page 1 SiENBE04-507A Service Manual Inverter Pair Wall Mounted Type D-Series [Applied Models] !Inverter Pair : Cooling Only !Inverter Pair : Heat Pump...
Page 2 SiENBE04-507A Inverter Pair D-Series Cooling Only Indoor Unit FTKS20DVMW(L) FTKS20DVMW9 FTKS20D2VMW(L) FTKS25DVMW(L) FTKS25DVMW9 FTKS25D2VMW(L) FTKS35DVMW(L) FTKS35DVMW9 FTKS35D2VMW(L) FTKS20DAVMW(L) FTKS20D3VMW(L) FTKS25DAVMW(L) FTKS25D3VMW(L) FTKS35DAVMW(L) FTKS35D3VMW(L) Outdoor Unit RKS20DVMB RKS20D2VMB RKS20D3VMB RKS25DVMB RKS25D2VMB RKS25D3VMB RKS35DVMB RKS35D2VMB RKS35D3VMB Heat Pump Indoor Unit FTXS20DVMW(L) FTXS20DVMW9 FTXS20D2VMW(L) FTXS25DVMW(L) FTXS25DVMW9...
Page 3: Table Of Contents
SiENBE04-507A 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 List of Functions ..............1 1. List of Functions ..................2 Part 2 Specifications ..............7 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................21 Part 3 Printed Circuit Board Connector Wiring Diagram ... 39 1.
Page 4 SiENBE04-507A Part 5 System Configuration............77 1. System Configuration................78 2. Instruction....................79 2.1 Safety precautions..................79 2.2 Names of parts ..................81 2.3 Preparation before Operation..............84 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........87 2.5 Adjusting the Air Flow Direction .............89 2.6 POWERFUL Operation ................91 2.7 OUTDOOR UNIT SILENT Operation .............92 2.8 ECONO Operation .................93...
Page 5 SiENBE04-507A Part 7 Removal Procedure ............151 1. Indoor Unit...................152 1.1 Removal of Air Filter................152 1.2 Removal of Front Panel................154 1.3 Removal of Front Grille ................156 1.4 Removal of Horizontal Blades and Vertical Blades ......159 1.5 Removal of Electrical Box ..............162 1.6 Removal of PCB...................165 1.7 Removal of Drain Pan Unit..............171 1.8 Removal of Fan Motor................175...
Page 6: Introduction
SiENBE04-507A Introduction 1. Introduction Safety Cautions Be sure to read the following safety cautions before conducting repair work. Cautions and The caution items are classified into “ Warning” and “ Caution”. The “ Warnings Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7: Cautions Regarding Products After Repair
Introduction SiENBE04-507A Warning Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
Page 8: Inspection After Repair
SiENBE04-507A Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
Page 9: Using Icons
Introduction SiENBE04-507A Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.
Page 10: Part 1 List Of Functions
SiENBE04-507A Part 1 List of Functions 1. List of Functions ..................2 List of Functions...
Page 11: List Of Functions
List of Functions SiENBE04-507A 1. List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –15 Photocatalytic Deodorizing Filter — —...
Page 12 SiENBE04-507A List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –15 Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
Page 13 List of Functions SiENBE04-507A Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –15 Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
Page 14 SiENBE04-507A List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –15 Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
Page 15 List of Functions SiENBE04-507A Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –15 Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
Page 16: Part 2 Specifications
SiENBE04-507A Part 2 Specifications 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................21 Specifications...
Page 17: Specifications
Specifications SiENBE04-507A 1. Specifications Cooling Only 50Hz 230V Indoor Units FTKS20DVMW(9) FTKS20DVMW(9) FTKS20D2VMW Models Outdoor Units RKS20DVMB RKS20D2VMB RKS20DVMB 2.0 (1.3~2.6) 2.0 (1.3~2.6) 2.0 (1.3~2.6) Capacity Btu/h 6,820 (4,430~8,900) 6,820 (4,430~8,900) 6,820 (4,430~8,900) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,720 (1,120~2,240) 1,720 (1,120~2,240) Moisture Removal Running Current (Rated)
Page 18 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS20D2VMW FTKS20DVML FTKS20DVML Models Outdoor Units RKS20D2VMB RKS20DVMB RKS20D2VMB 2.0 (1.3~2.6) 2.0 (1.3~2.6) 2.0 (1.3~2.6) Capacity Btu/h 6,820 (4,430~8,900) 6,820 (4,430~8,900) 6,820 (4,430~8,900) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,720 (1,120~2,240) 1,720 (1,120~2,240) Moisture Removal Running Current (Rated) Power Consumption 490 (300~830)
Page 19 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS20D2VML FTKS20D2VML Models Outdoor Units RKS20DVMB RKS20D2VMB 2.0 (1.3~2.6) 2.0 (1.3~2.6) Capacity Btu/h 6,820 (4,430~8,900) 6,820 (4,430~8,900) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,720 (1,120~2,240) Moisture Removal Running Current (Rated) Power Consumption 490 (300~830) 490 (300~830) Rated (Min.~Max.) Power Factor 78.9...
Page 20 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS25DVMW(9) FTKS25DVMW(9) FTKS25D2VMW Models Outdoor Units RKS25DVMB RKS25D2VMB RKS25DVMB 2.5 (1.3~3.0) 2.5 (1.3~3.0) 2.5 (1.3~3.0) Capacity Btu/h 8,550 (4,450~10,250) 8,550 (4,450~10,250) 8,550 (4,450~10,250) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,150 (1,120~2,580) 2,150 (1,120~2,580) Moisture Removal Running Current (Rated) Power Consumption 685 (300~960)
Page 21 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS25D2VMW FTKS25DVML FTKS25DVML Models Outdoor Units RKS25D2VMB RKS25DVMB RKS25D2VMB 2.5 (1.3~3.0) 2.5 (1.3~3.0) 2.5 (1.3~3.0) Capacity Btu/h 8,550 (4,450~10,250) 8,550 (4,450~10,250) 8,550 (4,450~10,250) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,150 (1,120~2,580) 2,150 (1,120~2,580) Moisture Removal Running Current (Rated) Power Consumption 685 (300~960)
Page 22 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS25D2VML FTKS25D2VML Models Outdoor Units RKS25DVMB RKS25D2VMB 2.5 (1.3~3.0) 2.5 (1.3~3.0) Capacity Btu/h 8,550 (4,450~10,250) 8,550 (4,450~10,250) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,150 (1,120~2,580) Moisture Removal Running Current (Rated) Power Consumption 685 (300~960) 685 (300~960) Rated (Min.~Max.) Power Factor 78.4...
Page 23 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS35DVMW(9) FTKS35DVMW(9) FTKS35D2VMW Models Outdoor Units RKS35DVMB RKS35D2VMB RKS35DVMB 3.4 (1.4~3.8) 3.4 (1.4~3.8) 3.4 (1.4~3.8) Capacity Btu/h 11,600 (4,750~12,950) 11,600 (4,750~12,950) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 2,920 (1,200~3,270) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 1,045 (300~1,270)
Page 24 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS35D2VMW FTKS35DVML FTKS35DVML Models Outdoor Units RKS35D2VMB RKS35DVMB RKS35D2VMB 3.4 (1.4~3.8) 3.4 (1.4~3.8) 3.4 (1.4~3.8) Capacity Btu/h 11,600 (4,750~12,950) 11,600 (4,750~12,950) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 2,920 (1,200~3,270) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 1,045 (300~1,270)
Page 25 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS35D2VML FTKS35D2VML Models Outdoor Units RKS35DVMB RKS35D2VMB 3.4 (1.4~3.8) 3.4 (1.4~3.8) Capacity Btu/h 11,600 (4,750~12,950) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 1,045 (300~1,270) 1,045 (300~1,270) Rated (Min.~Max.) Power Factor 94.7...
Page 26 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS20DAVMW FTKS20DAVML FTKS20D3VMW Models Outdoor Units RKS20D3VMB RKS20D3VMB RKS20D3VMB 2.0 (1.3~2.6) 2.0 (1.3~2.6) 2.0 (1.3~2.6) Capacity Btu/h 6,820 (4,430~8,900) 6,820 (4,430~8,900) 6,820 (4,430~8,900) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,720 (1,120~2,240) 1,720 (1,120~2,240) Moisture Removal Running Current (Rated) Power Consumption 490 (300~830)
Page 27 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS20D3VML FTKS25DAVMW FTKS25DAVML Models Outdoor Units RKS20D3VMB RKS25D3VMB RKS25D3VMB 2.0 (1.3~2.6) 2.5 (1.3~3.0) 2.5 (1.3~3.0) Capacity Btu/h 6,820 (4,430~8,900) 8,550 (4,450~10,250) 8,550 (4,450~10,250) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,150 (1,120~2,580) 2,150 (1,120~2,580) Moisture Removal Running Current (Rated) Power Consumption 490 (300~830)
Page 28 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTKS25D3VMW FTKS25D3VML FTKS35DAVMW Models Outdoor Units RKS25D3VMB RKS25D3VMB RKS35D3VMB 2.5 (1.3~3.0) 2.5 (1.3~3.0) 3.4 (1.4~3.8) Capacity Btu/h 8,550 (4,450~10,250) 8,550 (4,450~10,250) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,150 (1,120~2,580) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 685 (300~960)
Page 29 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTKS35DAVML FTKS35D3VMW FTKS35D3VML Models Outdoor Units RKS35D3VMB RKS35D3VMB RKS35D3VMB 3.4 (1.4~3.8) 3.4 (1.4~3.8) 3.4 (1.4~3.8) Capacity Btu/h 11,600 (4,750~12,950) 11,600 (4,750~12,950) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 2,920 (1,200~3,270) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 1,045 (300~1,270)
Page 30: Heat Pump
SiENBE04-507A Specifications Heat Pump 50Hz 230V Indoor Units FTXS20DVMW(9) FTXS20DVMW(9) Models RXS20DVMB RXS20D2VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240)
Page 31 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS20D2VMW FTXS20D2VMW Models RXS20DVMB RXS20D2VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240) 2,320 (1,120~3,530)
Page 32 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS20DVML FTXS20DVML Models RXS20DVMB RXS20D2VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240) 2,320 (1,120~3,530)
Page 33 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS20D2VML FTXS20D2VML Models RXS20DVMB RXS20D2VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240) 2,320 (1,120~3,530)
Page 34 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS25DVMW(9) FTXS25DVMW(9) Models RXS25DVMB RXS25D2VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 35 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS25D2VMW FTXS25D2VMW Models RXS25DVMB RXS25D2VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 36 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS25DVML FTXS25DVML Models RXS25DVMB RXS25D2VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 37 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS25D2VML FTXS25D2VML Models RXS25DVMB RXS25D2VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 38 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS35DVMW(9) FTXS35DVMW(9) Models RXS35DVMB RXS35D2VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 39 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS35D2VMW FTXS35D2VMW Models RXS35DVMB RXS35D2VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 40 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS35DVML FTXS35DVML Models RXS35DVMB RXS35D2VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 41 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS35D2VML FTXS35D2VML Models RXS35DVMB RXS35D2VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 42 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS20DAVMW FTXS20DAVML Models RXS20D3VMB RXS20D3VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240) 2,320 (1,120~3,530)
Page 43 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS20D3VMW FTXS20D3VML Models RXS20D3VMB RXS20D3VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.1) 2.0 (1.3~2.6) 2.7 (1.3~4.1) Capacity Btu/h 6,820 (4,430~8,900) 9,210 (4,430~14,000) 6,820 (4,430~8,900) 9,210 (4,430~14,000) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,320 (1,120~3,530) 1,720 (1,120~2,240) 2,320 (1,120~3,530)
Page 44 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS25DAVMW FTXS25DAVML Models RXS25D3VMB RXS25D3VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 45 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS25D3VMW FTXS25D3VML Models RXS25D3VMB RXS25D3VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 8,550 (4,450~10,250) 11,600 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 2,150 (1,120~2,580) 2,920 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 46 SiENBE04-507A Specifications 50Hz 230V Indoor Units FTXS35DAVMW FTXS35DAVML Models RXS35D3VMB RXS35D3VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 47 Specifications SiENBE04-507A 50Hz 230V Indoor Units FTXS35D3VMW FTXS35D3VML Models RXS35D3VMB RXS35D3VMB Outdoor Units Cooling Heating Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 16,500 (4,750~17,050) 11,600 (4,750~12,950) 16,500 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) 2,920 (1,200~3,270) 3,440 (1,200~4,300)
Page 48: Part 3 Printed Circuit Board Connector Wiring Diagram
SiENBE04-507A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........40 1.1 Indoor Unit....................40 1.2 Outdoor Unit ...................42 Printed Circuit Board Connector Wiring Diagram...
Page 49: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiENBE04-507A 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors 1) S1 Connector for fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S27, S29, S36 Connector for control PCB 6) S28...
Page 50 SiENBE04-507A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A (R4288) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R4289) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...
Page 51: Outdoor Unit
Printed Circuit Board Connector Wiring Diagram SiENBE04-507A Outdoor Unit Connectors 1) S10 Connector for filter PCB 2) S11 Connector for control PCB 3) S20 Connector for electronic expansion valve coil 4) S30 Connector for compressor motor 5) S40 Connector for overload protector 6) S70 Connector for fan motor 7) S80...
Page 52 SiENBE04-507A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Filter PCB V3 V2 FU3(20A) (R4293) PCB(2): Control PCB (outdoor unit) S40 LED A FU2(3.15A) FU1(3.15A) (R4605) Printed Circuit Board Connector Wiring Diagram...
Page 53 Printed Circuit Board Connector Wiring Diagram SiENBE04-507A Printed Circuit Board Connector Wiring Diagram...
Page 54: Function And Control
SiENBE04-507A Part 4 Function and Control 1. Main Functions..................46 1.1 Frequency Principle................46 1.2 Air Flow Direction Control...............48 1.3 Fan Speed Control for Indoor Units............49 1.4 Programme Dry Function ...............50 1.5 Automatic Operation................51 1.6 Thermostat Control.................52 1.7 NIGHT SET Mode ..................53 1.8 ECONO Mode ..................54 1.9 INTELLIGENT EYE ................55 1.10 Inverter POWERFUL Operation .............57...
Page 55: Main Functions
Main Functions SiENBE04-507A 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle The compressor is frequency-controlled during normal operation. The target frequency is set by Main Control the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
Page 56 SiENBE04-507A Main Functions The inverter provides the following features: Inverter Features The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling / heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Page 57: Air Flow Direction Control
Main Functions SiENBE04-507A Air Flow Direction Control The large flaps send a large volume of air downwards to the floor. The flap provides an optimum Power-Airflow control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards. The flap presses the warm air above the floor to reach the entire room.
Page 58: Fan Speed Control For Indoor Units
SiENBE04-507A Main Functions Fan Speed Control for Indoor Units The airflow rate can be automatically controlled depending on the difference between the set Control Mode temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to trouble shooting for fan motor on page 115.
Page 59: Programme Dry Function
Main Functions SiENBE04-507A Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. The microcomputer automatically sets the temperature and fan settings.
Page 60: Automatic Operation
SiENBE04-507A Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Page 61: Thermostat Control
Main Functions SiENBE04-507A Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
Page 62: Night Set Mode
SiENBE04-507A Main Functions NIGHT SET Mode When the OFF timer is set, the NIGHT SET circuit automatically activates. The NIGHT SET circuit maintains the airflow setting made by users. The NIGHT SET circuit continues heating or cooling the room at the set temperature for the first The NIGHT SET one hour, then automatically raises the temperature setting slightly in the case of cooling, or Circuit...
Page 63: Econo Mode
Main Functions SiENBE04-507A ECONO Mode The "ECONO mode" reduces the maximum operating current and power consumption by Outline approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.
Page 64: Intelligent Eye
SiENBE04-507A Main Functions INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1.
Page 65 Main Functions SiENBE04-507A Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Page 66: Inverter Powerful Operation
SiENBE04-507A Main Functions 1.10 Inverter POWERFUL Operation In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by Outline increasing the indoor fan rotating speed and the compressor frequency. When POWERFUL button is pushed in each operation mode, the fan speed / setting Details of the temperature will be converted to the following states in a period of twenty minutes.
Page 67: Other Functions
Main Functions SiENBE04-507A 1.11 Other Functions 1.11.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 68: Function Of Thermistor
SiENBE04-507A Function of Thermistor 2. Function of Thermistor Heat Pump Model Four way valve Compressor (R3305) 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. A Outdoor Heat The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor (DCB)
Page 69: Cooling Only Model
Function of Thermistor SiENBE04-507A Cooling Only Model Compressor (R2828) 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. A Outdoor Heat The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor (DCB) target discharge temperature can be obtained.
Page 70: Control Specification
SiENBE04-507A Control Specification 3. Control Specification Mode Hierarchy There are two modes; the mode selected in user’s place (normal air conditioning mode) and Outline forced operation mode for installation and providing service. 1. For heat pump model Detail There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 71: Frequency Control
Control Specification SiENBE04-507A Frequency Control Frequency will be determined according to the difference between room and set temperature. Outline The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3.
Page 72 SiENBE04-507A Control Specification 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep.
Page 73: Controls At Mode Changing / Start-Up
Control Specification SiENBE04-507A Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Operate the inverter in the open phase operation with the conditions including the preheating Outline command from the discharge pipe temperature. Detail Preheating ON Condition When the discharge pipe temperature is below 10şC, inverter in open phase operation starts.
Page 74: Discharge Pipe Control
SiENBE04-507A Control Specification 3.3.4 3-minutes Standby Prohibit to turn ON the compressor for 3 minutes after turning it off. (Except when defrosting. (Only for Heat Pump Model).) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows.
Page 75: Input Current Control
Control Specification SiENBE04-507A Input Current Control The microcomputer calculates the input current during the compressor is running, and set the Outline frequency upper limit from such input current. In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation.
Page 76: Freeze-Up Protection Control
SiENBE04-507A Control Specification Freeze-up Protection Control During cooling operation, the signals being sent from the indoor unit allow the operating Outline frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...
Page 77: Fan Control
Control Specification SiENBE04-507A Fan Control Fan control is carried out with following functions. Outline 1. Fan control when defrosting 2. Fan OFF delay when stopped 3. ON/OFF control when cooling operation 4. Fan control when forced operation 5. Fan control in low noise mode 6.
Page 78: Defrost Control
SiENBE04-507A Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.
Page 79: Electronic Expansion Valve Control
Control Specification SiENBE04-507A 3.11 Electronic Expansion Valve Control The following items are included in the electronic expansion valve control. Outline Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
Page 80 SiENBE04-507A Control Specification 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
Page 81 Control Specification SiENBE04-507A 3.11.7 Control when frequency is changed When the target discharge pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift. 3.11.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger temperature, and adjust the electronic expansion valve opening so that the actual discharge...
Page 82: Malfunctions
SiENBE04-507A Control Specification 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outdoor air thermistor 3.12.2 Detection of Overload and Over Current In order to protect the inverter, detect an excessive output current, and for protecting Outline compressor, monitor the OL operation.
Page 83: Forced Operation Mode
Control Specification SiENBE04-507A Detail I Judgment by power consumption When an output frequency is exceeds 55 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. II Judgment by discharge pipe temperature When discharge pipe temperature is 30°C higher than target value and the electronic expansion value opening is 480 pulses (max.), the adjustment is made for insufficient gas.
Page 84: Facility Setting Jumper (Cooling At Low Outdoor Temperature)
SiENBE04-507A Control Specification 3.15 Facility Setting Jumper (cooling at low outdoor temperature) This function is limited only for facilities (the target of air conditioning is equipment (such as Outline computer)). Never use it in a residence or office (the space where there is a human). You can expand the operation range to –15°C by cutting jumper 8 (J8) on the PCB.
Page 85 Control Specification SiENBE04-507A Function and Control...
Page 86: Part 5 System Configuration
SiENBE04-507A Part 5 System Configuration 1. System Configuration................78 2. Instruction....................79 2.1 Safety precautions..................79 2.2 Names of parts ..................81 2.3 Preparation before Operation..............84 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........87 2.5 Adjusting the Air Flow Direction .............89 2.6 POWERFUL Operation ................91 2.7 OUTDOOR UNIT SILENT Operation .............92 2.8 ECONO Operation .................93...
Page 87: System Configuration
System Configuration SiENBE04-507A 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Page 88: Instruction
Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
Page 89: Installation Site
Instruction SiENBE04-507A • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.
Page 90: Names Of Parts
SiENBE04-507A Instruction Names of Parts Indoor Unit ON/OFF System Configuration...
Page 91 Instruction SiENBE04-507A Oudoor Unit Indoor Unit 12. Indoor Unit ON/OFF switch: (page 87) 1. Air filter • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Air Push once again to stop it. purifying filter: • These filters are attached to the inside of •...
Page 92: Remote Control
SiENBE04-507A Instruction Remote control ECONO ON/OFF TEMP POWERFUL MODE SWING SILENT COMFORT SENSOR CANCEL TIMER < > ARC433A50, 43 8. SILENT button: for OUTDOOR UNIT SILENT 1. Signal transmitter: • It sends signals to the indoor unit. operation (page 92) •...
Page 93: Preparation Before Operation
Instruction SiENBE04-507A Preparation before Operation To set the batteries 1. Press with a finger and slide the front cover to take it off. Position + and – correctly! 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
Page 94 SiENBE04-507A Instruction To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate.
Page 95: To Set The Clock
Instruction SiENBE04-507A To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3.
Page 96: Auto · Dry · Cool · Heat · Fan Operation
SiENBE04-507A Instruction AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. To start operation 1.
Page 97: To Change The Air Flow Rate Setting
Instruction SiENBE04-507A To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
Page 98: Adjusting The Air Flow Direction
SiENBE04-507A Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. is displayed on the LCD and the flaps will begin to swing. 2.
Page 99 Instruction SiENBE04-507A To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. <COOL/DRY> The flap will go up. <HEAT>...
Page 100: Powerful Operation
SiENBE04-507A Instruction POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used ECONO ON/OFF...
Page 101: Outdoor Unit Silent Operation
Instruction SiENBE04-507A OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT SILENT operation 1.
Page 102: Econo Operation
SiENBE04-507A Instruction ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 1, 2 2.
Page 103: Intelligent Eye Operation
Instruction SiENBE04-507A INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2. Press “SENSOR button” again. ECONO “...
Page 104 SiENBE04-507A Instruction “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 105: Timer Operation
Instruction SiENBE04-507A 2.10 TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
Page 106: To Use On Timer Operation
SiENBE04-507A Instruction To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. (page 84) 1. Press “ON TIMER button”. 6:00 is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 107: Care And Cleaning
Instruction SiENBE04-507A 2.11 Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...
Page 108: Air Filter
SiENBE04-507A Instruction Filters 1. Open the front panel. (page 98) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air Titanium Apatite Photocatalytic Air-Purifying Filter.
Page 109: Before A Long Idle Period
Instruction SiENBE04-507A NOTE • Operation with dirty filters : (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
Page 110: Troubleshooting
SiENBE04-507A Instruction 2.12 Troubleshooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation • This is to protect the air conditioner. Operation does not start soon. •...
Page 111: Check Again
Instruction SiENBE04-507A Check again. Please check again before calling a repair person. Case Check • Hasn’t a breaker turned OFF or a fuse blown? The air conditioner does not • Isn’t it a power failure? operate. • Are batteries set in the remote control? (OPERATION lamp is off) •...
Page 112: Call The Service Shop Immediately
SiENBE04-507A Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
Page 113: Fault Diagnosis
Instruction SiENBE04-507A Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROL In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 00 ” indication flashes on 1. When the TIMER CANCEL button is held down for 5 seconds, a “ the temperature display section.
Page 114: Part 6 Service Diagnosis
SiENBE04-507A Part 6 Service Diagnosis 1. Caution for Diagnosis................106 2. Problem Symptoms and Measures .............107 3. Service Check Function ..............108 4. Troubleshooting ..................111 4.1 Error Codes and Description ..............111 4.2 Indoor Unit PCB Abnormality ...............112 4.3 Freeze-up Protection Control or High Pressure Control.......113 4.4 Fan Motor (DC Motor) or Related Abnormality........115 4.5 Thermistor or Related Abnormality (Indoor Unit)........117 4.6 Signal Transmission Error (between Indoor and Outdoor Unit) ...118...
Page 115: Caution For Diagnosis
Caution for Diagnosis SiENBE04-507A 1. Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
Page 116: Problem Symptoms And Measures
SiENBE04-507A Problem Symptoms and Measures 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the Units Check the power supply. Check to make sure that the rated voltage is — Operates. supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 117: Service Check Function
Service Check Function SiENBE04-507A 3. Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the Check Method 1 temperature display section.
Page 118 SiENBE04-507A Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP s ,TEMP t , MODE) simultaneously. (R4272) The digit of the number of tens blinks. HTry again from the start when the digit does not blink. (R4273) 2.
Page 119 Service Check Function SiENBE04-507A 5. Press the TEMP button. Press TEMP s or TEMP t and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. H“ pi ” : The both numbers of tens and units do not accord with the error code. H“...
Page 120: Troubleshooting
SiENBE04-507A Troubleshooting 4. Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal Insufficient gas Over-voltage detection Signal transmission error (between indoor and outdoor unit) Unspecified voltage (between indoor and outdoor unit) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality...
Page 121: Indoor Unit Pcb Abnormality
Troubleshooting SiENBE04-507A Indoor Unit PCB Abnormality Remote Controller Display Evaluation of zero-cross detection of power supply by indoor unit. Method of Malfunction Detection When there is no zero-cross detection in approximately 10 continuous seconds. Malfunction Decision Conditions Faulty indoor unit PCB Supposed Faulty connector connection Causes...
Page 122: Freeze-Up Protection Control Or High Pressure Control
SiENBE04-507A Troubleshooting Freeze-up Protection Control or High Pressure Control Remote Controller Display High pressure control (heat pump model only) Method of During heating operations, the temperature detected by the indoor heat exchanger Malfunction thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection Freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
Page 123 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Refer to P.146 Check the air passage. Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Clean the air filter.
Page 124: Fan Motor (Dc Motor) Or Related Abnormality
SiENBE04-507A Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display The rotation speed detected by the Hall IC during fan motor operation is used to determine Method of abnormal fan motor operation. Malfunction Detection When the detected rotation speed is less than 50% of the H tap under maximum fan motor Malfunction rotation demand.
Page 125 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply and Refer to P.144 rotate fan by hand. Does fan rotate Replace fan motor. smoothly? Turn power ON and operate fan.
Page 126: Thermistor Or Related Abnormality (Indoor Unit)
SiENBE04-507A Troubleshooting Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Controller Display The temperatures detected by the thermistors are used to determine thermistor errors. Method of Malfunction Detection When the thermistor input is more than 4.96 V or less than 0.04 V during compressor Malfunction operation∗.
Page 127: Signal Transmission Error (Between Indoor And Outdoor Unit)
Troubleshooting SiENBE04-507A Signal Transmission Error (between Indoor and Outdoor Unit) Remote Controller Display The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is Method of checked whether it is normal. Malfunction Detection When the data sent from the outdoor unit cannot be received normally, or when the content of Malfunction the data is abnormal.
Page 128: Unspecified Voltage (Between Indoor And Outdoor Units)
SiENBE04-507A Troubleshooting Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display The supply power is detected for its requirements (different from pair type and multi type) by the Method of indoor / outdoor transmission signal. Malfunction Detection The pair type and multi type are interconnected. Malfunction Decision Conditions...
Page 129: Outdoor Unit Pcb Abnormality
Troubleshooting SiENBE04-507A Outdoor Unit PCB Abnormality Remote Controller Display The system follows the microprocessor program to make sure it runs normally. Method of The system checks to see if the zero-cross signal comes in properly. Malfunction Detection The microprocessor program runs out of control. Malfunction The zero-cross signal is not detected.
Page 130: Ol Activation (Compressor Overload)
SiENBE04-507A Troubleshooting OL Activation (Compressor Overload) Remote Controller Display A compressor overload is detected through compressor OL. Method of Malfunction Detection If the compressor OL is activated twice, the system will be shut down. Malfunction The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).
Page 131: Compressor Lock
Troubleshooting SiENBE04-507A 4.10 Compressor Lock Remote Controller Display A compressor lock is detected by checking the compressor running condition through the Method of position detection circuit. Malfunction Detection The system judges the compressor lock, and stops due to over current. Malfunction The system judges the compressor lock, and cannot operation with position detection within Decision...
Page 132: Dc Fan Lock
SiENBE04-507A Troubleshooting 4.11 DC Fan Lock Remote Controller Display A fan motor or related error is detected by checking the high-voltage fan motor rpm being Method of detected by the Hall IC. Malfunction Detection The fan does not start in 30 seconds even when the fan motor is running. Malfunction The system will be shut down if the error occurs 16 times.
Page 133: Input Over Current Detection
Troubleshooting SiENBE04-507A 4.12 Input Over Current Detection Remote Controller Display An input over-current is detected by checking the input current value with the compressor Method of running. Malfunction Detection The following current with the compressor running continues for 2.5 seconds. Malfunction Cooling / Heating: Above 12A Decision...
Page 134: Four Way Valve Abnormality
SiENBE04-507A Troubleshooting 4.13 Four Way Valve Abnormality Remote Controller Display The indoor air temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor Method of temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if Malfunction they function within their normal ranges in the operating mode.
Page 135 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.5 Refer to P.145 Four way valve coil Correct. disconnected (loose)? Check No.6 Refer to P.146 Harness out of connector? Reconnect.
Page 136: Discharge Pipe Temperature Control
SiENBE04-507A Troubleshooting 4.14 Discharge Pipe Temperature Control Remote Controller Display The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Method of temperature being detected by the discharge pipe thermistor. Malfunction Detection If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the Malfunction system will be shut down.
Page 137: High Pressure Control In Cooling
Troubleshooting SiENBE04-507A 4.15 High Pressure Control in Cooling Remote Controller Display High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Method of temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Activated when the temperature being sensed by the heat exchanger thermistor rises above Malfunction 65°C.
Page 138 SiENBE04-507A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Check the installation space. Refer to P.144 Check No.7 Abnormal Change the air outlet grille Installation condition check Check No.6 position.
Page 139: Compressor System Sensor Abnormality
Troubleshooting SiENBE04-507A 4.16 Compressor System Sensor Abnormality Remote Controller Display The system checks the DC current before the compressor starts. Method of Malfunction Detection If the DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output Malfunction converted to voltage value) or if the DC voltage before compressor start-up is below 50 V.
Page 140: Position Sensor Abnormality
SiENBE04-507A Troubleshooting 4.17 Position Sensor Abnormality Remote Controller Display A compressor startup failure is detected by checking the compressor running condition through Method of the position detection circuit. Malfunction Detection The compressor fails to start in about 15 seconds after the compressor run command signal Malfunction is sent.
Page 141: Dc Voltage / Current Sensor Abnormality
Troubleshooting SiENBE04-507A 4.18 DC Voltage / Current Sensor Abnormality Remote Controller Display Detecting abnormality of the DC sensor by the running frequency of compressor and by the Method of input current multiplied DC voltage and current. Malfunction Detection The compressor running frequency is below 52 Hz. Malfunction (The input current is also below 0.5 A.) Decision...
Page 142: Thermistor Or Related Abnormality (Outdoor Unit)
SiENBE04-507A Troubleshooting 4.19 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, H9 Remote Controller Display This type of error is detected by checking the thermistor input voltage to the microcomputer. Method of [A thermistor error is detected by checking the temperature.] Malfunction Detection The thermistor input is above 4.96 V or below 0.04 V with the power on.
Page 143 Troubleshooting SiENBE04-507A Be sure to turn off power switch before connect or disconnect connector, Troubleshooting Caution or parts damage may be occurred. Turn on the power again. Check No.6 Refer to P.146 Error displayed again on Reconnect. remote control? Connector or thermistor Reconnect.
Page 144: Electrical Box Temperature Rise
SiENBE04-507A Troubleshooting 4.20 Electrical Box Temperature Rise Remote Controller Display An electrical box temperature rise is detected by checking the radiation fin thermistor with the Method of compressor off. Malfunction Detection With the compressor off, the radiation fin temperature is above 80°C. Reset is made when the Malfunction temperature drops below 70°C.
Page 145 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Refer to P.146 WARNING Turn off the power and turn it on again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises Check No.7...
Page 146: Radiation Fin Temperature Rise
SiENBE04-507A Troubleshooting 4.21 Radiation Fin Temperature Rise Remote Controller Display A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Method of compressor on. Malfunction Detection If the radiation fin temperature with the compressor on is above 90°C. Malfunction If a radiation fin temperature rise takes place 4 times successively, the system will be shut Decision...
Page 147 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Turn off the power and turn it on Refer to P.146 again to get the system started. Check No.7 Refer to P.147 Error displayed again?
Page 148: Output Over Current Detection
SiENBE04-507A Troubleshooting 4.22 Output Over Current Detection Remote Controller Display An output over-current is detected by checking the current that flows in the inverter DC section. Method of Malfunction Detection A position signal error occurs while the compressor is running. Malfunction A speed error occurs while the compressor is running.
Page 149 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and Check No.7 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Page 150: Insufficient Gas
SiENBE04-507A Troubleshooting 4.23 Insufficient Gas Remote Controller Display Gas shortage detection I : A gas shortage is detected by checking the compressor running Method of frequency. Malfunction Gas shortage detection II : A gas shortage is detected by checking the difference between Detection indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Page 151 Troubleshooting SiENBE04-507A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Refer to P.144 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor Check No.6 * Outdoor air thermistor...
Page 152: Over-Voltage Detection
SiENBE04-507A Troubleshooting 4.24 Over-voltage Detection Remote Controller Display An abnormal voltage rise is detected by checking the specified over-voltage detection circuit. Method of Malfunction Detection An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer Malfunction (The voltage is over 400V). Decision The system will be shut down if the error occurs 255 times.
Page 153: Check
Check SiENBE04-507A 5. Check How to Check 5.1.1 Fan Motor Connector Output Check 1. Check connector connection. Check No.01 2. Check motor power supply voltage output (pins 4-7). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 154: Four Way Valve Performance Check
SiENBE04-507A Check 5.1.3 Four Way Valve Performance Check Check No.5 Turn off the power and turn it on again. ∗ Four way valve coil Cooling / dry : No continuity Start the heating-mode run. Heating : Continuity S80 voltage at DC 180-220 V with Replace the outdoor unit compressor on? PCB.
Page 155: Thermistor Resistance Check
Check SiENBE04-507A 5.1.4 Thermistor Resistance Check Remove the connectors of the thermistors on the PCB, and measure the resistance of each Check No.6 thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.
Page 156: Installation Condition Check
SiENBE04-507A Check 5.1.5 Installation Condition Check Check No.7 Installation condition check Check the Abnormal allowable dimensions of the Change the position of the air air suction and discharge discharge grille or the area. installation location. Normal Does the discharge air from other Change the position of the air outdoor unit cause an increase discharge grille or the...
Page 157: Outdoor Unit Fan System Check
Check SiENBE04-507A 5.1.7 Outdoor Unit Fan System Check Check No.9 DC motor Check the outdoor unit fan system. Fan motor lead wire Outdoor unit fan running? Reconnect. connector disconnected? Outdoor unit fan system Go to Check No. 15. functioning. (R2857) 5.1.8 Power Supply Waveforms Check Measure the power supply waveform between pins 1 and 3 on the terminal board, and check Check No.10...
Page 158: Power Transistor Check
SiENBE04-507A Check 5.1.10 Power Transistor Check Check No.13 Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is Note: approx. 0 volt before checking power transistor. < Measuring method > Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.
Page 159 Check SiENBE04-507A Service Diagnosis...
Page 160: Part 7 Removal Procedure
SiENBE04-507A Part 7 Removal Procedure 1. Indoor Unit...................152 1.1 Removal of Air Filter................152 1.2 Removal of Front Panel................154 1.3 Removal of Front Grille ................156 1.4 Removal of Horizontal Blades and Vertical Blades ......159 1.5 Removal of Electrical Box ..............162 1.6 Removal of PCB...................165 1.7 Removal of Drain Pan Unit..............171 1.8 Removal of Fan Motor................175 1.9 Removal of Heat Exchanger ..............177...
Page 161: Indoor Unit
Indoor Unit SiENBE04-507A 1. Indoor Unit Removal of Air Filter Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance feature Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this product including thermistors.
Page 162 SiENBE04-507A Indoor Unit Step Procedure Points 3. Removing the titanium apatite photocatalytic air- purifying filter The titanium apatite The titanium apatite photocatalytic air- photocatalytic air-purifying purifying filter is filter is not marked for Air filter attached to the back of difference between the right the air filter.
Page 163: Removal Of Front Panel
Indoor Unit SiENBE04-507A Removal of Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the front panel Put your fingers on the right and left projections of the front panel, and open the panel over the position where it will...
Page 164 SiENBE04-507A Indoor Unit Step Procedure Points Remove the front panel. Caution on Mounting When mounting the front panel, fit the right and left rotary shafts one by one into the grooves and fully push them in position. (R4316) Removal Procedure...
Page 165: Removal Of Front Grille
Indoor Unit SiENBE04-507A Removal of Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the service cover Remove the screw of Preparation the service cover. Remove the front panel according to the “Removal of Front Panel.”...
Page 166 SiENBE04-507A Indoor Unit Step Procedure Points Remove the screw covers (one each at the right and left). (R4321) Remove the screws When installing the indoor (one each at the right unit, drive the screws with and left). the horizontal blades open or removed.
Page 167 Indoor Unit SiENBE04-507A Step Procedure Points Put your fingers into the front grille and lift the grille up to unfasten the centre hook. (R4325) Unfasten the right hook also by putting your fingers into the grille and lifting it. (R4326) Remove the front grille Caution on Mounting by tilting the upper part...
Page 168: Removal Of Horizontal Blades And Vertical Blades
SiENBE04-507A Indoor Unit Removal of Horizontal Blades and Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the horizontal blade (large) Open the horizontal Cautions on Mounting blade (large).
Page 169 Indoor Unit SiENBE04-507A Step Procedure Points 2. Removing the horizontal blade (small) Remove the horizontal blade (small) while bending the fixed part Horizontal blade (small) at the centre slightly. Unfasten the left side. Unfasten the key type fixing shaft at the right side.
Page 170 SiENBE04-507A Indoor Unit Step Procedure Points 3. Removing the vertical blade Unfasten the hooks at the shaft mounting part by pressing them with a flat screwdriver. Hooks Unfasten the hooks at the upper 2 positions. Remove the vertical Six vertical blades are blade toward yourself.
Page 171: Removal Of Electrical Box
Indoor Unit SiENBE04-507A Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The figure shows the Preparation Electrical connections of wire Remove the front grille component box harnesses.
Page 172 SiENBE04-507A Indoor Unit Step Procedure Points Remove the drip proof Put any excess wires behind plate by removing the the power supply lead wire. screw. Drip proof plate Replace the heat exchanger thermistor. Use care not to lose the retainer of thermistor. Heat exchanger thermistor Retainer of...
Page 173 Indoor Unit SiENBE04-507A Step Procedure Points Release the hook at the upper far side by Hook pressing it from above and pulling the box toward yourself. Lift up the electrical box There is a hook also at the and pull it toward lower part of the back.
Page 174: Removal Of Pcb
SiENBE04-507A Indoor Unit Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the shelter The figure shows the Preparation appearance of the Remove the electrical box electrical box.
Page 175 Indoor Unit SiENBE04-507A Step Procedure Points 3. Removing the terminal board Dismount the terminal board by removing the screw. Terminal board 4. Removing the signal receiver unit Remove the signal receiver unit by Signal receiver unit unfastening the hooks (one each at the right Hook Hook and left).
Page 176 SiENBE04-507A Indoor Unit Step Procedure Points Remove the electrical Hook box by sliding it to the left. Hook Disconnect the wire harness. 5. Removing the signal receiver PCB Remove the signal receiver PCB by opening the hooks at 3 positions. Hook Hook Hook...
Page 177 Indoor Unit SiENBE04-507A Step Procedure Points 6. Removing the INTELLIGENT EYE PCB Remove the INTELLIGENT EYE INTELLIGENT EYE fixing plate by twisting it fixing plate clockwise. Remove the (R4363) INTELLIGENT EYE PCB by unfastening the hook. Hook (R4364) Disconnect the connector from the INTELLIGENT EYE PCB.
Page 178 SiENBE04-507A Indoor Unit Step Procedure Points 7. Removing the display The figure shows the connection of wire harness for the display PCB. Display PCB Remove the display PCB by unfastening the 2 hooks. Hook Disconnect the connector from the display PCB. Green Green LED2...
Page 179 Indoor Unit SiENBE04-507A Step Procedure Points Lift up the bottom of the When mounting the control control PCB and pull it PCB, make sure that it is Fixing hook out. fixed by upper hooks. Fixing hook The figures show the Lead-free solder (PbF) is names of the PCB used for the PCB.
Page 180: Removal Of Drain Pan Unit
SiENBE04-507A Indoor Unit Removal of Drain Pan Unit Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Removing the drain pan Preparation unit Remove the electrical box according to the “Removal Lift up the indoor unit of Electrical Box.”...
Page 181 Indoor Unit SiENBE04-507A Step Procedure Points Remove the drain pan Caution on Mounting toward yourself from Make sure that the hook at the indoor unit body. the left side is fitted in the groove. Hook 2. Removing the swing motor Remove the screw of the swing motor.
Page 182 SiENBE04-507A Indoor Unit Step Procedure Points 3. Removing the crank assembly Crank assembly Remove the screw of the crank assembly. Remove the crank assembly by unfastening the hook. Hook The figure shows the position of the hook when the crank assembly has been Hook inserting part removed.
Page 183 Indoor Unit SiENBE04-507A Step Procedure Points Remove the drain cap (Left side) located at the left side of the drain pan unit. Drain cap Insert the drain hose to the left side. (Left side) Press the removed Use a 4mm Allen wrench. drain plug into the right side with an Allen Caution...
Page 184: Removal Of Fan Motor
SiENBE04-507A Indoor Unit Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points Undo the fan motor Preparation lead wires from the Remove the drain pan unit hooks.
Page 185 Indoor Unit SiENBE04-507A Step Procedure Points Unfasten the hook (a) of the fan motor fixing plate with your thumb. Hook(c) Hook(a) Unfasten the hook (c). Hook(c) Hook(a) Remove the fan motor. Removal Procedure...
Page 186: Removal Of Heat Exchanger
SiENBE04-507A Indoor Unit Removal of Heat Exchanger Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Disconnecting the Preparation refrigerant pipe Remove the drain pan unit according to the “Removal Remove the screws of Drain Pan Unit.”...
Page 187 Indoor Unit SiENBE04-507A Step Procedure Points 2. Removing the indoor unit Remove the indoor unit from the installation plate. 3. Removing the heat exchanger Unfasten the hook of the pipe fixing plate at the back of the unit and pull out the pipe. Widen the auxiliary pipe Unbending angle: by about 10-20...
Page 188 SiENBE04-507A Indoor Unit Step Procedure Points After unfastening the When mounting the heat lower hooks, hold up exchanger, make sure that the heat exchanger by the hook (left) is fastened. its left side and lift it up toward yourself. Hook (left) Hook (left) When the left side is...
Page 189: Removal Of Fan Rotor
Indoor Unit SiENBE04-507A 1.10 Removal of Fan Rotor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Removing the drip proof Preparation plate Remove the heat exchanger Drip proof plate (right) according to the “Removal of Heat Exchanger.”...
Page 190 SiENBE04-507A Indoor Unit Step Procedure Points Unfasten the hook (a) of the fan motor fixing plate with your thumb and unfasten the hook Hook (c) (b). Hook (a) The fan motor fixing plate can be removed from the unit when the motor fixing hook (c) is unfastened.
Page 191 Indoor Unit SiENBE04-507A Step Procedure Points 3. Removing the bearing Remove the screw of the drip proof plate (left). The drip proof plate can be removed when the hooks at 2 positions are unfastened. Hook Hook Press the rubber-made bearing with force from outside.
Page 192: Outdoor Unit
SiENBE04-507A Outdoor Unit 2. Outdoor Unit Removal of Panels and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step 1. Features Handle Take care not to cut your finger by the fins of the heat exchanger.
Page 193 Outdoor Unit SiENBE04-507A Step Procedure Points 2. Remove the panels. Top panel Loosen the 3 screws (front, right, left) and lift the top panel. Remove the drip proof Drip proof plate plate. Disconnect the The fan motor is united with connector for fan motor the front panel.
Page 194 SiENBE04-507A Outdoor Unit Step Procedure Points Undo the hooks. The front panel has 4 hooks. Pull and remove the The fan motor is united with front panel. the front panel. Hooks 3. Remove the fan motor. The screw has reverse winding.
Page 195 Outdoor Unit SiENBE04-507A Step Procedure Points Loosen the 2 screws Bell mouth and lift the bell mouth to undo the hooks. Remove the bell mouth. Hooks Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.
Page 196 SiENBE04-507A Outdoor Unit Step Procedure Points Loosen the 4 screws to M4×16 remove the fan motor. DC fan motor Fan motor Loosen the 2 screws to remove the fan motor fixing frame. Fan motor fixing frame Removal Procedure...
Page 197 Outdoor Unit SiENBE04-507A Step Procedure Points 4. Remove the right side panel. Loosen the 2 screws on the rear side. Loosen the 3 screws on the right side. Right side panel Loosen the screw and lift the connection port to remove. Removal Procedure...
Page 198 SiENBE04-507A Outdoor Unit Step Procedure Points When reassembling, make sure to fit the hook. Hook Removal Procedure...
Page 199: Removal Of Electrical Box
Outdoor Unit SiENBE04-507A Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel. Disconnect the connector for fan motor. 1. Remove the electrical box.
Page 200 SiENBE04-507A Outdoor Unit Step Procedure Points Release the discharge Pay attention so as not to pipe thermistor. lose the clip for thermistor. Thermistor Clip Piping Discharge pipe thermistor Release the heat Pay attention so as not to exchanger thermistor. lose the clip. Clip Heat exchanger thermistor Lift and remove the...
Page 201: Removal Of Reactor And Partition Plate
Outdoor Unit SiENBE04-507A Removal of Reactor and Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. Reactor Remove the electrical box. 1.
Page 202 SiENBE04-507A Outdoor Unit Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. When reassembling, fit the lower hook into the bottom frame. Hook Removal Procedure...
Page 203: Removal Of Sound Blanket
Outdoor Unit SiENBE04-507A Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. Remove the electrical box. 1. Remove the sound blanket.
Page 204 SiENBE04-507A Outdoor Unit Step Procedure Points Pull the sound blanket Since the piping ports on the (inner) out. sound blanket are torn easily, remove the blanket carefully. Pull the sound blanket (bottom) out. Removal Procedure...
Page 205: Removal Of Four Way Valve
Outdoor Unit SiENBE04-507A Removal of Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the peripheries. Remove the four way valve and the sheets of putty so as not to burn them.
Page 206 SiENBE04-507A Outdoor Unit Step Procedure Points Remove the sheets of putty. Cut the pipe with a tube cutter. Tube cutter Heat up the brazed part Provide a protective sheet or and withdraw the piping a steel plate so that the with pliers.
Page 207: Removal Of Compressor
Outdoor Unit SiENBE04-507A Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the compressor. Unscrew the nut of the compressor. Warning Ventilate when refrigerant leaks during the work.
Page 208 SiENBE04-507A Outdoor Unit Step Procedure Points Heat up the brazed part of the suction side and disconnect. Lift the compressor up and remove it. Removal Procedure...
Page 209: Removal Of Pcb
Outdoor Unit SiENBE04-507A Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the PCB. You can remove the PCB when you disconnect the Feature of the PCB read wires on the terminal board without removing the...
Page 210 SiENBE04-507A Outdoor Unit Step Procedure Points Loosen the 4 screws. Undo the 3 hooks on Hooks the upper side. Lift and pull out the PCB. Removal Procedure...
Page 211 Outdoor Unit SiENBE04-507A Step Procedure Points Feature of the PCB S70: fan motor Glass fuse PbF (Pb free soldering) 3.15A S80: four way valve S90: thermistor (outdoor air, heat exchanger, discharge pipe) Glass fuse LED A Varistor Removal Procedure...
Page 212: Part 8 Others
SiENBE04-507A Part 8 Others 1. Others ....................204 1.1 Test Run from the Remote Controller ..........204 1.2 Jumper Settings ...................205 Others...
Page 213: Others
Others SiENBE04-507A 1. Others Test Run from the Remote Controller In cooling mode, select the lowest programmable temperature; in heating mode, select the For Heat pump highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
Page 214: Jumper Settings
SiENBE04-507A Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille.
Page 215 Others SiENBE04-507A Others...
Page 216: Part 9 Appendix
SiENBE04-507A Part 9 Appendix 1. Piping Diagrams..................208 1.1 Indoor Units ..................208 1.2 Outdoor Units ..................209 2. Wiring Diagrams..................211 2.1 Indoor Units ..................211 2.2 Outdoor Units ..................211 Appendix...
Page 217: Piping Diagrams
Piping Diagrams SiENBE04-507A 1. Piping Diagrams Indoor Units FTKS20/25/35DVMW(L), FTKS20/25/35DVMW9, FTXS20/25/35DVMW(L), FTXS20/25/35DVMW9, FTKS20/25/35D2VMW(L), FTKS20/25/35DAVMW(L), FTXS20/25/35D2VMW(L), FTXS20/25/35DAVMW(L), FTKS20/25/35D3VMW(L) FTXS20/25/35D3VMW(L) INDOOR UNIT INDOOR UNIT HEAT EXCHANGER MAFFLER ASSY MAFFLER ASSY 7.0CuT HEAT EXCHANGER 7.0CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR 6.4CuT 6.4CuT ON HEAT EXCH. ON HEAT EXCH.
Page 218: Outdoor Units
SiENBE04-507A Piping Diagrams Outdoor Units 1.2.1 Cooling Only RKS20/25DVMB, RKS20/25D2VMB, RKS20/25D3VMB OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 6.4CuT 7.0CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER...
Page 219 Piping Diagrams SiENBE04-507A 1.2.2 Heat Pump RXS20/25DVMB, RXS20/25D2VMB, RXS20/25D3VMB OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 6.4CuT 7.0CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT 9.5CuT MUFFLER WITH FILTER FOUR WAY VALVE FIELD PIPING...
Page 220: Wiring Diagrams
SiENBE04-507A Wiring Diagrams 2. Wiring Diagrams Indoor Units FTK(X)S20/25/35DVMBW(L), FTK(X)S20/25/35DVMW9, FTK(X)S20/25/35D2VMW(L), FTK(X)S20/25/35DAVMW(L), FTK(X)S20/25/35D3VMW(L) FIELD WIRING. PCB3 PCB1 ∼ ∼ LED1 RECTIFIER 3.15A OUTDOOR LED2 CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS CAUTION TURNED OFF AND THEN BACK ON AGAIN.
Page 221 Wiring Diagrams SiENBE04-507A Appendix...
Page 222: Index
SiENBE04-507A Index Numerics compressor overload ........... 121 compressor protection function ......65 00 .................111 compressor system sensor abnormality ....130 3-minutes standby ..........58, 65 connectors ............40, 42 control PCB (indoor unit) ........41 control PCB (outdoor unit) ........43 A1 .................112 A5 .................113 A6 .................115...
Page 223 SiENBE04-507A L4 ..............137 L5 ..............139 indoor heat exchanger thermistor ....59, 60 P4 ..............133 indoor unit PCB abnormality ....... 112 U0 ..............141 input current control ..........66 U2 ..............143 input over current detection ......... 124 U4 ..............118 installation condition check ......... 147 UA ..............119 instruction ..............
Page 224 SiENBE04-507A signal receiving sign ..........58 signal transmission error ........118 P4 .................133 sound blanket ............194 partition plate ............192 specifications ............8 PCB ..............165, 200 starting operation control ........71 PI control ..............63 stop valve cover ..........183 piping diagrams ............208 SW1 ..............
Page 225 SiENBE04-507A Index...
Page 226: Drawings & Flow Charts
SiENBE04-507A Drawings & Flow Charts insufficient gas ............ 141 insufficient gas control ........... 73 ARC433A .............108 INTELLIGENT EYE ..........55 automatic air flow control ........49 INTELLIGENT EYE sensor PCB ......41 automatic operation ..........51 inverter features ............ 47 auto-swing ..............48 inverter powerful operation ........
Page 227 SiENBE04-507A radiation fin temperature rise .......137 remote controller ..........108 service check function ..........108 signal receiver PCB ..........41 signal transmission error (between indoor and outdoor units) ....118 target discharge pipe temperature control .....72 thermistor or related abnormality (indoor unit) ..117 thermistor or related abnormality (outdoor unit) ...133 thermistor resistance check .........146 thermostat control ..........52 trial operation from remote controller ....204...
Page 228 "The present publication is drawn up by way of information only conditioning equipment, compressors and Management System in accordance with the ISO9001 and does not constitute an offer binding upon Daikin Europe N.V.. refrigerants has led to its close involvement in standard. ISO9001 pertains to quality assurance Daikin Europe N.V.

Daikin FTKS20DVMW(L) Service Manual

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