Mitsubishi Electric PLFY Series Technical & Service Manual
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Table of Contents
- 1 Table of Contents
- 2 Safety Precaution
- 3 Technical Changes
- 4 Part Names and Functions
- 5 4-1. Specifications
- 6 Way Air Flow System
- 7 Outlines and Dimensions
- 8 Wiring Diagram
- 9 Refrigerant System Diagram
- 10 Disassembly Procedure
- 11 Troubleshooting
- 12 Parts List
- 13 Rohs PARTS LIST
- Download this manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model names]
PLFY-P20VCM-E
PLFY-P25VCM-E
PLFY-P32VCM-E
PLFY-P40VCM-E
INDOOR UNIT
Model name
indication
[Service Ref.]
PLFY-P20VCM-E.TH
PLFY-P20VCM-E
PLFY-P25VCM-E.TH
PLFY-P25VCM-E
PLFY-P32VCM-E.TH
PLFY-P32VCM-E
PLFY-P40VCM-E.TH
PLFY-P40VCM-E
REVISED EDITION-C
R410A
R407C
Revision :
• PLFY-P20/25/32/40VCM-
E
.TH are added in
1
REVISED EDITION-C.
.TH
• Some descriptions have
1
been modified.
• Please void OC314
.TH
1
REVISED EDITION-B.
Note :
• RoHS compliant products
.TH
1
have <G> mark on spec
name plate.
For servicing RoHS compli-
.TH
ant products, refer to the
1
RoHS Parts List.
CONTENTS
1. TECHNICAL CHANGES·························2
2. SAFETY PRECAUTION··························2
3. PART NAMES AND FUNCTIONS ··········6
4. SPECIFICATIONS···································8
5. 4-WAY AIR FLOW SYSTEM·················10
6. OUTLINES AND DIMENSIONS············12
7. WIRING DIAGRAM·······························13
8. REFRIGERANT SYSTEM DIAGRAM ·····14
9. DISASSEMBLY PROCEDURE·············15
10 . TROUBLESHOOTING··························18
11. PARTS LIST··········································25
12. RoHS PARTS LIST·······························29
July 2007
No.OC314
R22
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Table of Contents
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Summary of Contents for Mitsubishi Electric PLFY Series
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2007 No.OC314 REVISED EDITION-C TECHNICAL & SERVICE MANUAL R410A R407C Indoor unit Revision : [Model names] [Service Ref.] • PLFY-P20/25/32/40VCM- .TH are added in PLFY-P20VCM-E PLFY-P20VCM-E.TH REVISED EDITION-C. PLFY-P20VCM-E • Some descriptions have been modified. PLFY-P25VCM-E.TH PLFY-P25VCM-E •... -
Page 2: Technical Changes
TECHNICAL CHANGES PLFY-P20VCM-E.TH PLFY-P20VCM-E PLFY-P25VCM-E.TH PLFY-P25VCM-E PLFY-P32VCM-E.TH PLFY-P32VCM-E PLFY-P40VCM-E.TH PLFY-P40VCM-E • PANEL has been changed. SLP-2AA(White : 0.70Y 8.59/0.97) SLP-2AAW(Pure white : 6.4Y 8.9/0.4) SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to charge the system. - Page 3 [2] Refrigerant recharging (1) Refrigerant recharging process 1Direct charging from the cylinder ·R407C cylinder which is available on the market has a syphon pipe. ·Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant) Unit Gravimeter (2) Recharge in refrigerant leakage case ·After recovering all the refrigerant in the unit, proceed to working.
- Page 4 Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Do not use the existing refrigerant piping. valve. The old refrigerant and lubricant in the existing piping Vacuum pump oil may flow back into refrigerant cycle and contains a large amount of chlorine which may cause the that can cause deterioration of refrigerant oil etc.
- Page 5 [1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.
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Page 6: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor Unit Filter Remove dust and pollutants from inhaled 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. Air Intake Inhales air from room. - Page 7 Wired remote controller Display Section “Sensor” indication Day-of-Week For purposes of this explanation, Shows the current day of the week. Displayed 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.
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Page 8: 4-1. Specifications
SPECIFICATION SPECIFICATIONS 4-1. SPECIFICATIONS .TH PLFY-P32VCM-E Item PLFY-P25VCM-E PLFY-P40VCM-E PLFY-P20VCM-E · Single phase 220-230-240V 50Hz Power Cooling capacity Heating capacity 0.05 0.06 Cooling Input 0.05 0.06 Heating 0.23 0.28 Cooling Current 0.23 0.28 Heating Unit : Galvanized sheets with gray heat insulation Grilles : ABS resin Exterior —... - Page 9 4-2. ELECTRICAL PARTS SPECIFICATIONS Model Symbol PLFY-P20VCM-E PLFY-P25VCM-E PLFY-P32VCM-E PLFY-P40VCM-E Parts name Thermistor (Room temperature TH21 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k" detection) Thermistor (Pipe temperature TH22 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k" detection/ Liquid) Thermistor (Pipe temperature TH23 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"...
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Page 10: 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 Detail drawing of fresh air intake [100 [73.4 3-[2.8 hole... - Page 11 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 12: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E .TH PLFY-P25VCM-E PLFY-P32VCM-E .TH PLFY-P40VCM-E Unit : mm Fresh air intake Detail drawing of fresh air intake Detail drawing of fresh air intake Detail drawing of fresh air intake Suspension bolt pitch [100 [73.4 3-[2.8... -
Page 13: Wiring Diagram
WIRING DIAGRAM PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E .TH PLFY-P25VCM-E PLFY-P32VCM-E .TH PLFY-P40VCM-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... -
Page 14: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E .TH PLFY-P25VCM-E PLFY-P32VCM-E .TH PLFY-P40VCM-E Strainer (#50mesh) Thermistor (Pipe temperature detection/ Gas) TH23 Gas pipe Thermistor (Pipe temperature detection/ Liquid) TH22 Flare connection Liquid pipe Heat exchanger Linear expansion valve Strainer1 (#50mesh) Strainer2 (#100mesh) Strainer (#100mesh) Thermistor (Room temparature detection) TH21... -
Page 15: Disassembly Procedure
DISASSEMBLY PROCEDURE PLFY-P20·P25·P32·P40VCM-E.TH Be careful on removing heavy parts. PLFY-P20·P25·P32·P40VCM-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 16 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Removing the room temperature detection (TH21) Photo 4 (1) Remove the panel. (Refer to 3) Connectors (2) Pull out the room temperature detection from the drain pan. Drain plug Control box (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover.
- Page 17 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 9. Removing the drain pump (DP) and drain sensor (DS) Photo 7 Cover Screw (1) Remove the panel. (Refer to 3 ) (2) Remove the drain pan. (Refer to 6) (3) Remove the 2 screws fixed to the control box cover, and Control remove the control box cover.
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Page 18: Troubleshooting
TROUBLESHOOTING 10-1. HOW TO CHECK THE PARTS PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E .TH PLFY-P25VCM-E PLFY-P32VCM-E .TH PLFY-P40VCM-E Parts name Check points Thermistor (TH21) Disconnect the connector then measure the resistance with a tester. (Room temperature (At the ambient temperature 10:~30:) detection) Thermistor (TH22) Normal... - Page 19 <Thermistor characteristic graph> < Thermistor for lower temperature > Thermistor (TH21) Thermistor for (Room temperature detection) lower temperature Thermistor (TH22) (Pipe temperature detection/ Liquid) Thermistor (TH23) (Pipe temperature detection/ Gas) Thermistor R =15k' ± 3% Fixed number of B=3480K ± 2% Rt=15exp { 3480( 273+t 15k'...
- Page 20 <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. • When linear expansion valve operation stops, all output phase become OFF. • At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate.
- Page 21 10-2. FUNCTION OF DIP SWITCH 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> Filter cleaning 2,500h 100h Fresh air intake Effective Not effective 1 2 3 4 5 6 7 8 9 10...
- Page 22 Effective Pole Operation by switch Remarks timing SW11 Indoor controller board 1st digit SW12 SW11 address <Initial setting> setting Address setting should be done when M-NET SW12 SW11 remote controller is being used. SW12 2nd digit address Before setting power supply Indoor controller board SW14...
- Page 23 10-3. TEST POINT DIAGRAM 10-3-1. Indoor controller board PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E PLFY-P25VCM-E .TH PLFY-P32VCM-E PLFY-P40VCM-E 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 1 to 3 3 8.7-13V DC (Pin1 1 (+))
- Page 24 10-3-2. Indoor power board PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E PLFY-P25VCM-E .TH PLFY-P32VCM-E PLFY-P40VCM-E CN2S Connect to the indoor controller board (CN2D) Between 1 1 to 3 3 12.6-13.7V DC (Pin1 1 (+)) CNSK Connect to the indoor controller board (CNDK) Between 1 1 to 3 3 220-240V AC...
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Page 25: Parts List
PARTS LIST (Non-RoHS compliant) PANEL PARTS SLP-2AA(FOR PLFY-P20·P25·P32·P40VCM-E.TH) GEAR(M) GEAR(V) VANE BUSH VANE MOTOR TEMP. ON/OFF Q'ty/set Wiring Recom- Remarks Parts No. Parts name Specification Diagram mended (Drawing No.) Symbol Q'ty SLP-2AA Including H2 AIR OUTLET GRILLE AUTO VANE CORNER PANEL AIR FILTER INTAKE GRILLE VANE MOTOR... - Page 26 FUNCTIONAL PARTS PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH DRAIN SENSOR SENSOR HOLDER / TH23 PIPE TEMPERA- TURE DETECTION / GAS PIPE TEMPERA- TURE DETECTION / LIQUID SPL WASHER ROOM TEMPERA- TURE DETECTION...
- Page 27 Q'ty/set Wiring Recom- PLFY- Remarks Parts No. Parts name Specification Diagram mended (Drawing No.) Symbol Q'ty VCM-E.TH BASE DRUM-1 LEG-1 DRUM-2 INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER LINEAR EXPANSION VALVE 3PCS/SET MOTOR MOUNT INDOOR FAN MOTOR PK6V11-LF INDOOR FAN MOTOR PK6V15-LD INDOOR FAN MOTOR PK6V20-LL...
- Page 28 ELECTRICAL PARTS PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH Q'ty/set Wiring Recom- PLFY- Remarks Specification Diagram mended Parts No. Parts name (Drawing No.) Symbol Q'ty VCM-E.TH CAPACITOR 1.0+ / 40VAC CAPACITOR 1.5+ / 440VAC INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD VARISTOR FUSE...
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Page 29: Rohs Parts List
RoHS PARTS LIST (RoHS compliant) PANEL PARTS SLP-2AA(FOR PLFY-P20·P25·P32·P40VCM-E.TH) SLP-2AAW(FOR PLFY-P20·P25·P32·P40VCM-E .TH) GEAR(M) GEAR(V) VANE BUSH VANE MOTOR TEMP. ON/OFF Q'ty/set Wiring Recom- Remarks Parts No. Parts name Specification SLP- Diagram mended (Drawing No.) Symbol Q'ty 2AAW Including H2 AIR OUTLET GRILLE AIR OUTLET GRILLE Including H2 AUTO VANE... - Page 30 FUNCTIONAL PARTS PLFY-P20VCM-E.TH PLFY-P25VCM-E.TH PLFY-P32VCM-E.TH PLFY-P40VCM-E.TH PLFY-P20VCM-E PLFY-P25VCM-E PLFY-P32VCM-E PLFY-P40VCM-E DRAIN SENSOR SENSOR HOLDER / TH23 PIPE TEMPERA- TURE DETECTION / GAS PIPE TEMPERA- TURE DETECTION / LIQUID SPL WASHER ROOM TEMPERA- TURE DETECTION...
- Page 31 Q'ty/set Wiring Recom- PLFY- Remarks Parts No. Specification Parts name Diagram mended (Drawing No.) Symbol Q'ty VCM-E BASE DRUM-1 LEG-1 DRUM-2 INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER LINEAR EXPANSION VALVE 3PCS/SET MOTOR MOUNT INDOOR FAN MOTOR PK6V11-LF INDOOR FAN MOTOR PK6V15-LD INDOOR FAN MOTOR PK6V20-LL...
- Page 32 INDOOR POWER BOARD HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jul. 2007. No. OC314 REVISED EDITION-C PDF 7 Distributed in Jun. 2006. No. OC314 REVISED EDITION-B PDF 8 New publication, effective Jul.