Table of Contents
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
PLFY-P12NAMU-E
[Models]
PLFY-P15NAMU-E
PLFY-P18NAMU-E
PLFY-P24NAMU-E
PLFY-P30NAMU-E
PLFY-P36NAMU-E
R410A / R22
CONTENTS
1. FEATURES····························································· 2
2. PART NAMES AND FUNCTIONS ························· 3
3. SPECIFICATIONS ·················································· 5
4. 4-WAY AIR FLOW SYSTEM ·································· 8
5. OUTLINES AND DIMENSIONS ····························· 11
6. WIRING DIAGRAM ················································ 12
7. REFRIGERANT SYSTEM DIAGRAM······················· 13
8. MICROPROCESSOR CONTROL ·························· 14
9. TROUBLE SHOOTING ·········································· 21
10. DISASSEMBLY PROCEDURE ······························ 26
11. PARTS LIST ··························································· 29
12. RoHS PARTS LIST ················································ 32
13. OPTIONAL PARTS················································· 35
August 2006
No. OC340
REVISED EDITION-A
Revision:
• RoHS PARTS LIST is added.
• Some descriptions have been
modified.
• Please void OC340.
NOTE:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
• For servicing of RoHS compli-
ant products, refer to the RoHS
PARTS LIST.
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Table of Contents
Related Manuals for Mitsubishi City Multi Series PLFY-P12NAMU-E
Summary of Contents for Mitsubishi City Multi Series PLFY-P12NAMU-E
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS August 2006 No. OC340 REVISED EDITION-A TECHNICAL & SERVICE MANUAL R410A / R22 PLFY-P12NAMU-E [Models] Revision: PLFY-P15NAMU-E • RoHS PARTS LIST is added. • Some descriptions have been modified. PLFY-P18NAMU-E • Please void OC340. PLFY-P24NAMU-E NOTE: PLFY-P30NAMU-E •... -
Page 2: Indoor Unit
FEATURES Indoor Unit Models Cooling capacity / Heating capacity PLFY-P12NAMU-E 12,000 / 13,500 Btu/h PLFY-P15NAMU-E 15,000 / 17,000 Btu/h PLFY-P18NAMU-E 18,000 / 20,000 Btu/h PLFY-P24NAMU-E 24,000 / 27,000 Btu/h PLFY-P30NAMU-E 30,000 / 34,000 Btu/h PLFY-P36NAMU-E 36,000 / 40,000 Btu/h 1. SPACE-SAVING CENTRALLY LOCATED CEILING RECESSED INSTALLATION 2. -
Page 3: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor (Main) Unit Filter Removes dust and pollutants from return air Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. - Page 4 Display “Sensor” indication Displayed when the remote controller sensor is used. Day-of-Week For purposes of this explanation, Shows the current day of the week. all parts of the display are shown as lit. During actual operation, only Time/Timer Display the relevant items will be lit. “Locked”...
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Page 5: Specifications
SPECIFICATIONS 3-1. SPECIFICATIONS PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Item · Power Single phase 208/230V 60Hz Cooling capacity 30,000 36,000 12,000 15,000 18,000 24,000 Btu/h Heating capacity 34,000 40,000 13,500 17,000 20,000 27,000 Btu/h Cooling 0.27 0.27 0.14 0.14 0.14 0.14 Input Heating... -
Page 6: Noise Criterion Curves
3-2. NOISE CRITERION CURVES PLFY-P12NAMU-E PLFY-P15NAMU-E SPL(dB) SPL(dB) NOTCH LINE NOTCH LINE High High Medium1 Medium1 Medium2 Medium2 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE... - Page 7 PLFY-P36NAMU-E SPL(dB) NOTCH LINE PLFY-P30NAMU-E SPL(dB) NOTCH LINE High High Medium1 Medium1 Medium2 Medium2 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR NC-20 HEARING FOR NC-20 CONTINUOUS CONTINUOUS NOISE NOISE 1000 2000 4000...
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Page 8: Way Air Flow System
3-3. ELECTRICAL PARTS SPECIFICATIONS Model Symbol PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Parts name Room temperature Resistance 30_F/15.8k", 50_F/9.6k", 70_F/6.0k", 80_F/4.8k", 90_F/3.9k", 100_F/3.2k" TH21 thermistor Resistance 30_F/15.8k", 50_F/9.6k", 70_F/6.0k", 80_F/4.8k", 90_F/3.9k", 100_F/3.2k" Liquid pipe thermistor TH22 Gas pipe thermistor Resistance 30_F/15.8k", 50_F/9.6k", 70_F/6.0k", 80_F/4.8k", 90_F/3.9k", 100_F/3.2k" TH23 Fuse FUSE... - Page 9 2) According to the number of air outlets and height of the ceiling to install the unit, be sure to set up the switches (SWA, SWB) on the indoor board to the appropriate setting. • Correspondence of ceiling heights to numbers of air outlets. PLFY-P12, P15, P18NAMU-E (Unit : feet) Standard...
- Page 10 4-4. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS l l PLFY-P12 /P15 /P18 /P24NAMU-E Multifunction casement + Standard filter Multifunction casement + High efficiency filter Static pressure [in. W.G.] Static pressure [in. W.G.] Air flow [CFM] Air flow [CFM] 2 intakes 2 intakes 1 intake...
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Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P12NAMU-E PLFY-P24NAMU-E Unit : in(mm) PLFY-P15NAMU-E PLFY-P30NAMU-E PLFY-P18NAMU-E PLFY-P36NAMU-E Branch duct hole Ceiling hole 3-15/16(100) (Cut out hole) 3-15/16(100) 25/32~1-25/32(20~45) 33-27/32~35-13/16(860~910) 25/32~1-25/32(20~45) 3-17/32(90) 3-17/32(90) 31-7/8(810) Fresh air intake Suspension bolt pitch 6-1/4(159) Branch [6-7/8([175) 13-25/32(350) duct Branch duct hole hole 14-[1/8([2.8) Terminal block... -
Page 12: Wiring Diagram
WIRING DIAGRAM PLFY-P12NAMU-E PLFY-P24NAMU-E PLFY-P15NAMU-E PLFY-P30NAMU-E PLFY-P18NAMU-E PLFY-P36NAMU-E TO NEXT INDOOR UNIT <w2> PULL BOX GRN/YLW 1 2 3 AC208-230V DC13.1V CNSK CN2S TRANS (RED) (WHT) FUSE 1 2 3 (15A) BREAKER (15A) GRILLE POWER D.U.M POWER CN2D 1 3 5 POWER SUPPLY (WHT) CNDK... -
Page 13: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P12NAMU-E PLFY-P24NAMU-E PLFY-P15NAMU-E PLFY-P30NAMU-E PLFY-P18NAMU-E PLFY-P36NAMU-E Strainer (#50mesh) Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Flare connection Liquid pipe Heat exchanger Linear expansion valve Strainer1 (#50 mesh) Strainer2 (#100 mesh) Strainer (#100 mesh) Room temperature Refrigerant flow in cooling thermistor TH21 Refrigerant flow in heating... -
Page 14: Microprocessor Control
MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 8-1. COOL OPERATION <How to operate> 1 Press POWER ON/OFF button. TIME SUN MON TUE WED THU FRI SAT TIMER AFTER AFTER 2 Press the operation MODE button to display COOL. ERROR CODE FUNCTION ˚F˚C FILTER ˚F˚C 3 Press the TEMP. - Page 15 From the preceding page. Control modes Remarks Control details 3. Drain pump 3-1. Drain pump control •Always drain pump ON during the COOL and DRY mode operation. (Regardless of the thermo ON/ OFF) •When the operation mode has changed from the COOL or DRY to the others (including Stop), OFF the control after the drain pump ON for 3 minutes.
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Page 16: Dry Operation
8-2. DRY OPERATION <How to operate> 1 Press POWER ON/OFF button. TIME SUN MON TUE WED THU FRI SAT TIMER AFTER AFTER 2 Press the operation MODE button to display DRY. ERROR CODE FUNCTION ˚F˚C FILTER ˚F˚C 3 Press the TEMP. button to set the desired temperature. WEEKLY SIMPLE ONLY1Hr. -
Page 17: Fan Operation
8-3. FAN OPERATION <How to operate> 1 Press POWER ON/OFF button. TIME SUN MON TUE WED THU FRI SAT 2 Press the operation MODE button to display FAN. TIMER AFTER AFTER ERROR CODE FUNCTION ˚F˚C FILTER ˚F˚C WEEKLY SIMPLE ONLY1Hr. AUTO OFF TEMP. -
Page 18: Heat Operation
8-4. HEAT OPERATION <How to operate> 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display HEAT. TIME SUN MON TUE WED THU FRI SAT 3 Press the TEMP. button to set the desired temperature. TIMER AFTER AFTER ERROR CODE FUNCTION... - Page 19 From the preceding page. Control modes Control details Remarks 2-3. Thermo OFF mode 2. Fan When the thermoregulating function changes to OFF, the indoor fan operates in [Extra low]. 2-4. Heat defrosting mode The indoor fan stops. 3. Drain pump No drain pump operation However, when the control changes from COOL or DRY operation, the drain pump operates for 3 minutes.
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Page 20: When Unit Is Stopped Control Mode
8-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION] <How to operate> 1 Press POWER ON/OFF button. TIME SUN MON TUE WED THU FRI SAT 2 Press the operation MODE button to display AUTO. TIMER AFTER AFTER ERROR CODE FUNCTION 3 Press the TEMP. button to set the desired temperature. ˚F˚C FILTER ˚F˚C... -
Page 21: Trouble Shooting
TROUBLE SHOOTING 9-1. HOW TO CHECK THE PARTS Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester. thermistor (TH21) (Surrounding temperature 50_F~86_F) Liquid pipe thermistor (TH22) Normal Abnormal (Refer to the next page for a detail.) Gas pipe thermistor 4.3k"~9.6k"... -
Page 22: Linear Expansion Valve
<Thermistor characteristic graph> < Thermistor for lower temperature > Room temperature thermistor(TH21) Thermistor for Liquid pipe temperature thermistor(TH22) lower temperature Gas pipe temperature thermistor(TH23) Thermistor R =15k' ± 3% Fixed number of B=3480k' ± 2% Rt=15exp { 3480( 273+(t-32)/1.8 30_F 15.8k' 50_F 9.6k'... - Page 23 <Output pulse signal and the valve operation> Output Output (Phase) Closing a valve : 1 Opening a valve : 4 The output pulse shifts in above order. 1. When linear expansion valve operation stops, all output phase become OFF. 2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrates.
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Page 24: Function Of Dip Switch
9-2. FUNCTION OF DIP SWITCH Operation by switch Switch Pole Function Remarks Thermistor <intake temperature Built-in remote controller Indoor unit Address board detection> position Filter clogging detection Provided Not provided <At delivery> Filter cleaning 2,500hr 100hr Fresh air intake Effective Not effective 1 2 3 4 5 6 7 8 9 10 Remote indication switching... - Page 25 Switch Pole Operation by switch Remarks Address board Ceiling height can be changed depends on SWB setting. (High ceiling2) <At delivery> Ceiling PLFY-P12, P15, P18, P24NAMU-E (Unit : feet) (High ceiling1) height selector (Standard) High High Standard ceiling1 ceiling2 4 direction 11.5 3 direction 10.8...
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Page 26: Disassembly Procedure
DISASSEMBLY PROCEDURE PLFY-P12NAMU-E PLFY-P24NAMU-E Be careful on removing heavy parts. PLFY-P15NAMU-E PLFY-P30NAMU-E PLFY-P18NAMU-E PLFY-P36NAMU-E OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 1. Removing the air intake grille Figure 1 (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. Air intake grille (2) Remove the string hook from the panel to prevent the grille from dropping. - Page 27 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 4. Remove the fan motor Photo 3 Fan motor (1) Remove the bell mouth.(See photo 1) (2) Remove the electrical box.(See photo 2) (3) Remove the turbo fan nut, washer and radiation cap(P100, P125). (4) Pull out the turbo fan. (5) Disconnect the connector of the fan motor lead wire.
- Page 28 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 8. Removing the drain pump and drain sensor Photo 7 (1) Remove the panel. (See photo 5) (2) Remove the bell mouth. (See photo 1) (3) Remove the electrical box. (See photo 2) (4) Remove the drain pan. (See photo 6) (5) Remove the 3 screws of the drain pump.
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Page 29: Parts List
R01 E00 223 VANE BUSH R01 E00 063 GEAR (VANE) R01 E00 040 GEAR (MOTOR) R01 E01 040 SCREW ASSY T7W E00 673 REMOTE CONTROLLER — PAR-21MAA This REMOTE CONTROLLER is made by AIR-CONDITIONING & REFRIGERATION SYSTEMS WORKS,. MITSUBISHI ELECTRIC CORPORATION. - Page 30 FUNCTIONAL PARTS PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Q'ty/set Price Wiring Recom- Remarks Diagram mended Part No. Part Name Specification PLFY-P · NAMU-E (Drawing No.) Unit Amount Symbol Q'ty TURBO FAN R01 E10 114 TURBO FAN R01 E11 114 SPL WASHER R01 08K 097 HEAT EXCHANGER T7W K16 480...
- Page 31 FUNCTIONAL PARTS PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Q'ty/set Price Wiring Recom- Remarks Diagram mended Part No. Part Name Specification PLFY-P · NAMU-E (Drawing No.) Unit Amount Symbol Q'ty 24 30 36 T7W E09 529 DRAIN PAN T7W E06 529 DRAIN PAN DRAIN PAN T7W E07 529...
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Page 32: Rohs Parts List
R01 E17 223 VANE BUSH R01 E02 063 GEAR (VANE) R01 E03 040 GEAR (MOTOR) R01 E04 040 SCREW ASSY T7W E01 673 REMOTE CONTROLLER — PAR-21MAA This REMOTE CONTROLLER is made by AIR-CONDITIONING & REFRIGERATION SYSTEMS WORKS,. MITSUBISHI ELECTRIC CORPORATION. - Page 33 FUNCTIONAL PARTS PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Price Q'ty/set Wiring Recom- Remarks Diagram mended Part No. Part Name Specification PLFY-P · NAMU-E (Drawing No.) Unit Amount Symbol Q'ty TURBO FAN R01 E28 114 TURBO FAN R01 E29 114 SPL WASHER R01 09K 097 HEAT EXCHANGER T7W H10 480...
- Page 34 FUNCTIONAL PARTS PLFY-P12NAMU-E PLFY-P15NAMU-E PLFY-P18NAMU-E PLFY-P24NAMU-E PLFY-P30NAMU-E PLFY-P36NAMU-E Q'ty/set Price Wiring Recom- Remarks Diagram mended Part No. Part Name Specification PLFY-P · NAMU-E (Drawing No.) Unit Amount Symbol Q'ty 24 30 36 T7W E26 529 DRAIN PAN T7W E27 529 DRAIN PAN T7W E28 529 DRAIN PAN...
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Page 35: Optional Parts
OPTIONAL PARTS 13-1. MULTI FUNCTION CASEMENT Part No. PAC-SG03TM-E 13-2. AIR OUTLET SHUTTER PLATE (20 SETS) Part No. PAC-SG06SP-E 13-3. HIGH EFFICIENCY FILTER ELEMENT (PAC-SG03TM-E IS REQUIRED) Part No. PAC-SG01KF... - Page 36 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN cCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Aug. 2006 No. OC340 REVISED EDITION-A PDF 9 New publication, effective Aug. 2006 Distributed in Jun. 2005 No. OC340 PDF 10...