Table of Contents
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model names]
PLFY-P08NCMU-E
PLFY-P12NCMU-E
PLFY-P15NCMU-E
Model name
indication
INDOOR UNIT
[Service Ref.]
PLFY-P08NCMU-E.TH
PLFY-P08NCMU-E
.TH
1
PLFY-P08NCMU-ER2.TH
PLFY-P08NCMU-ER3.TH
PLFY-P08NCMU-ER4.TH
PLFY-P12NCMU-E.TH
PLFY-P12NCMU-E
.TH
1
PLFY-P12NCMU-ER2.TH
PLFY-P12NCMU-ER3.TH
PLFY-P12NCMU-ER4.TH
PLFY-P15NCMU-E.TH
PLFY-P15NCMU-E
.TH
1
PLFY-P15NCMU-ER2.TH
PLFY-P15NCMU-ER3.TH
PLFY-P15NCMU-ER4.TH
CONTENTS
1. TECHNICAL CHANGES ........................................... 2
2. FEATURES ................................................................ 3
3. PART NAMES AND FUNCTIONS ............................. 4
4. SPECIFICATIONS ..................................................... 6
5. 4-WAY AIR FLOW SYSTEM ...................................... 9
6. OUTLINES AND DIMENSIONS ............................... 11
7. WIRING DIAGRAM .................................................. 12
8. REFRIGERANT SYSTEM DIAGRAM ........................ 15
9. MICROPROCESSOR CONTROL ........................... 16
10. TROUBLESHOOTING ............................................. 23
11. DISASSEMBLY PROCEDURE ................................ 30
REVISED EDITION-D
R410A / R22
Revision:
• PLFY-P08/12/15NCMU-ER4.TH
have been added in
REVISED EDITION-D.
• Some descriptions have been
modified.
• Please void OCH410
REVISED EDITION-C.
NOTE:
• This manual describes only
service data of the indoor units.
PARTS CATALOG (OCB410)
April 2012
No. OCH410
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Table of Contents
Related Manuals for Mitsubishi City Multi Series PLFY-P08NCMU-E
Summary of Contents for Mitsubishi City Multi Series PLFY-P08NCMU-E
- Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS April 2012 No. OCH410 REVISED EDITION-D TECHNICAL & SERVICE MANUAL R410A / R22 Indoor unit [Model names] [Service Ref.] PLFY-P08NCMU-E.TH PLFY-P08NCMU-E Revision: • PLFY-P08/12/15NCMU-ER4.TH PLFY-P08NCMU-E have been added in PLFY-P08NCMU-ER2.TH REVISED EDITION-D. PLFY-P08NCMU-ER3.TH • Some descriptions have been modified.
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Page 2: Technical Changes
Use the specifi ed refrigerant only Never use any refrigerant other than that specifi ed. Doing so may cause a burst, an explosion, or fi re when the unit is being used, serviced, or disposed of. Correct refrigerant is specifi ed in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions. -
Page 3: Features
FEATURES Models Cooling capacity / Heating capacity PLFY-P08NCMU-E 8,000 / 9,000 Btu/h PLFY-P12NCMU-E 12,000 / 13,500 Btu/h PLFY-P15NCMU-E 15,000 / 17,000 Btu/h Indoor Unit 1. PERFECT PANEL SIZE The brand new 22-7/16 inch PLFY-P08/12/15NCMU-E models are slim, attractive, yet powerful units. PLFY-P08/12/15NCMU-E’s size and shape, which perfectly match 2-by-2 ceilings, and its lighter weight of 34 lbs (PLFY-P08NCMU-E) make installation even easier and more convenient. -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor (Main) Unit Filter Removes dust and pollutants from return air. Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. -
Page 5: Wired Remote Controller
Wired remote controller Display Section Day-of-Week “Sensor” indication For purposes of this explanation, Shows the current day of the week. Displays when the remote controller all parts of the display are shown sensor is used. as lit. During actual operation, only the relevant items will be lit. -
Page 6: Specifications
SPECIFICATIONS 4-1. SPECIFICATIONS PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH Item PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH Power Single phase 208/230V 60Hz V·Hz 15,000 Cooling capacity Btu/h 8,000 12,000 17,000 Heating capacity Btu/h 9,000 13,500 0.06 Cooling 0.05 0.06 Input 0.06... -
Page 7: Noise Criterion Curves
4-2. NOISE CRITERION CURVES PLFY-P12NCMU-E.TH PLFY-P08NCMU-E.TH PLFY-P12NCMU-E PLFY-P08NCMU-E NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High PLFY-P12NCMU-ER2.TH High PLFY-P08NCMU-ER2.TH Medium Medium PLFY-P12NCMU-ER3.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER4.TH PLFY-P08NCMU-ER4.TH 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... -
Page 8: Electrical Parts Specifications
4-3. ELECTRICAL PARTS SPECIFICATIONS Service ref. PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH Symbol PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH Parts name Thermistor (Room temperature TH21 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 detection) Thermistor (Pipe temperature... -
Page 9: Way Air Flow System
4-WAY AIR FLOW SYSTEM 5-1. FRESH AIR INTAKE (Location for installation) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake hole diagram (Unit : inch) Fresh air intake 3 - 1/8 Burring hole... - Page 10 5-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedure 1) Turn off a main power supply (Turn off a breaker). 2) Disconnect the vane motor connector of the direction of the arrow with pressing the unlocking button as shown in figure below.
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Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH Unit : inch(mm) Detail drawing of fresh air intake Fresh air intake 1(25) 3-15/16( 100) 2-7/8( 73.4) 3- 1/8( 2.8) 20-7/8(530) Cut out hole Burring hole Suspension bolt pitch 22-7/16(570) -
Page 12: Wiring Diagram
WIRING DIAGRAM PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E [LEGEND] SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD CAPACITOR (FAN MOTOR) CN32 CONNECTOR REMOTE SWITCH DRAIN PUMP CN41 HA TERMINAL-A DRAIN SENSOR CN51 CENTRALLY CONTROL DEW PREVENTION HEATER CN52 REMOTE INDICATION LINEAR EXPANSION VALVE FUSE FUSE (6.3A/250V) FAN MOTOR (WITH THERMAL FUSE) - Page 13 PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH (RED) (RED) Notes: <Fig.1> 1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit. MODELS 2. In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.) 3.
- Page 14 PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH LEGEND SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD CAPACITOR(FAN MOTOR) CN24 CONNECTOR EXTERNAL HEATER DRAIN PUMP CN32 REMOTE SWITCH DRAIN SENSOR DEW PREVENTION HEATER CN41 HA TERMINAL-A CN51 CENTRALLY CONTROL LINEAR EXPANSION VALVE CN52 REMOTE INDICATION FAN MOTOR(WITH THERMAL FUSE) FUSE FUSE(T6.3AL 250V) VANE MOTOR MODE SELECTION...
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Page 15: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH 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... -
Page 16: Microprocessor Control
MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 9-1. 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 û Fû C FILTER °F °C 3 Press the TEMP. - Page 17 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 18: Dry Operation
9-2. 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 û Fû C FILTER °F °C 3 Press the TEMP. -
Page 19: Fan Operation
9-3. 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 û Fû C FILTER °F °C WEEKLY SIMPLE ONLY1Hr. -
Page 20: Heat Operation
9-4. HEAT OPERATION <How to operate> 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display HEAT. 3 Press the TEMP. button to set the desired temperature. TIME SUN MON TUE WED THU FRI SAT TIMER NOTE: The set temperature changes 1°F(2°F) when the button is AFTER AFTER... - Page 21 From the preceding page Control modes Control details Remarks 2-3. Thermo OFF mode 2. Fan When the thermostat 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 22: Auto Operation [Automatic Cool/Heat Change Over Operation]
9-5. 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. û... -
Page 23: Troubleshooting
TROUBLESHOOTING 10-1. HOW TO CHECK THE PARTS PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH Parts name Check points Thermistor (TH21) Disconnect the connector then measure the resistance with a tester. (Room temperature (At the ambient temperature 50 F~86 F) detection) Thermistor (TH22) -
Page 24: 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=3480 ± 2% Rt=15exp { 3480( 273+(t-32)/1.8 30_F 15.8k' 50_F 9.6k'... - Page 25 <Output pulse signal and the valve operation> Output Output (Phase) Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. •...
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Page 26: Function Of Dip Switch
10-2. FUNCTION OF DIP SWITCH The black square ( ) indicates a switch position. Operation by switch Effective Switch Pole Function Remarks timing Thermistor <Room temperature Built-in remote controller Indoor unit Indoor controller board detection> position Filter clogging detection Provided Not provided <Initial setting>... -
Page 27: Test Point Diagram
Effective Pole Operation by switch Remarks timing SW11 Indoor controller board 1s digit address SW12 SW11 How to set addresses <Initial setting> setting Example: If address is "3", remain SW12 SW12 SW11 (for over 10) at "0", and match SW11 (for 1 to 9) SW12 with "3". - Page 28 10-3-2. Indoor controller board PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E CN2M CN3A Connect to the terminal block (TB5) Connect to the terminal block (TB15) (M-NET transmission connecting wire) (MA-Remote controller connecting wire) 24-30V DC (non-polar) Between 1 to 3 8.7-13V DC (Pin1 (+)) CN29 Pipe temperature detection/Gas (TH23)
- Page 29 PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH CN2M CN3A LED2 Connect to the terminal block (TB5) Connect to the terminal block (TB15) Power supply for (M-NET transmission connecting wire) (MA-Remote controller connecting wire) MA-Remote controller 24-30V DC (non-polar) Between 1 to 3 8.7-13V DC (Pin1 (+)) CN29 Pipe temperature...
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Page 30: Disassembly Procedure
DISASSEMBLY PROCEDURE PLFY-P08/12/15NCMU-E.TH PLFY-P08/12/15NCMU-E PLFY-P08/12/15NCMU-ER2.TH PLFY-P08/12/15NCMU-ER3.TH Be careful when removing heavy parts. PLFY-P08/12/15NCMU-ER4.TH 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 Air intake grille arrow 1 to open the air intake grille. - Page 31 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 5. Removing the room temperature detection (TH21) Photo 4 Connectors (1) Remove the panel. (Refer to procedure 3) Control box (2) Pull out the room temperature detection from the drain pan. Drain plug (3) Remove the 2 screws fixed to the control box cover, and Screw remove the control box cover.
- Page 32 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 9. Removing the drain pump (DP) and drain sensor (DS) Photo 7 Lead wires (1) Remove the panel. (Refer to procedure 3 ) (2) Remove the drain pan. (Refer to procedure 6) Control box (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover.
- Page 33 OCH410D...
- Page 34 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN cCopyright 2006 MITSUBISHI ELECTRIC CORPORATION Distributed in Apr. 2012 No. OCH410 REVISED EDITION-D Distributed in Dec. 2011 No. OCH410 REVISED EDITION-C Distributed in Jun. 2009 No. OCH410 REVISED EDITION-B PDF 6 Distributed in Jul.