Mitsubishi Electric City Multi PLFY Series Technical & Service Manual
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name]
PLFY-P15VFM-E1
PLFY-P20VFM-E1
PLFY-P25VFM-E1
PLFY-P32VFM-E1
PLFY-P40VFM-E1
PLFY-P50VFM-E1
Model name
indication
TCH061.indd 1
TCH061.indd 1
[Service Ref.]
PLFY-P15VFM-E1R1.TH
PLFY-P20VFM-E1R1.TH
PLFY-P25VFM-E1R1.TH
PLFY-P32VFM-E1R1.TH
PLFY-P40VFM-E1R1.TH
PLFY-P50VFM-E1R1.TH
INDOOR UNIT
R410A
Note:
• This manual describes service data
of the indoor units only.
• RoHS compliant products have
<H> mark on the spec name plate.
CONTENTS
1. SAFETY PRECAUTION .......................... 2
2. PARTS NAMES AND FUNCTIONS ........ 4
3. SPECIFICATIONS ................................. 11
4. 4-WAY AIRFLOW SYSTEM ................. 13
5. OUTLINES AND DIMENSIONS ............ 15
6. WIRING DIAGRAM ............................... 16
7. REFRIGERANT SYSTEM DIAGRAM ...... 17
8. TROUBLESHOOTING .......................... 18
9. DISASSEMBLY PROCEDURE ............. 26
PARTS CATALOG (TCB061)
July 2021
No. TCH061
24/6/2564 16:45:52
24/6/2564 16:45:52
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Table of Contents
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Summary of Contents for Mitsubishi Electric City Multi PLFY Series
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2021 No. TCH061 TECHNICAL & SERVICE MANUAL R410A Indoor unit [Model Name] [Service Ref.] PLFY-P15VFM-E1R1.TH Note: • This manual describes service data PLFY-P15VFM-E1 of the indoor units only. • RoHS compliant products have PLFY-P20VFM-E1R1.TH <H>... -
Page 2: Safety Precaution
SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use the following tools specifically designed for Do not use the existing refrigerant piping. use with R410A refrigerant. The old refrigerant and lubricant in the existing piping The following tools are necessary to use R410A refrigerant. - Page 3 [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 4: Parts Names And Functions
PARTS NAMES AND FUNCTIONS 2-1. Indoor Unit Filter Removes dust and pollutants Horizontal Air Outlet from drawn in air. 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 2-2. WIRED REMOTE CONTROLLER <PAR-32MAA> Wired remote controller function The functions which can be used are restricted according to each model. : Supported : Unsupported PAR-32MAA Function PAR-21MAA Slim City multi Body Product size H × W × D (mm) 120 ×...
- Page 6 The main display can be displayed in 2 different modes: "Full" and "Basic". The factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. <Full mode> <Basic mode> All icons are displayed for explanation. 23 45 Cool Set temp.
- Page 7 Menu structure Press the button. MENU Main menu Move the cursor to the desired item with the buttons, and press the button. SELECT Vane · Louver · Vent. (Lossnay) High power Timer ON/OFF timer Auto-Off timer Weekly timer Restriction Temp. range Operation lock Energy-saving Auto return...
- Page 8 Main menu list Setting and display items Setting details Vane · Louver · Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting from 5 different settings. Use to turn ON/OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation.
- Page 9 Setting and display items Setting details Service Function setting Use to make settings for indoor unit's functions. (City Multi) Input Select "Input maintenance Info." from the Service menu to bring up the Maintenance maintenance information screen. The following settings can be made from the Maintenance Information screen. •...
- Page 10 2-3. Wireless remote controller Transmission area Not available Remote controller display Battery replacement indicator Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/down airflow direction) i-see button Timer ON button Menu button Timer OFF button SET/SEND button...
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Page 11: Specifications
SPECIFICATIONS 3-1. SPECIFICATIONS Service Ref. PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH power source single phase, 220-230-240 V, 50 Hz / 220 V, 60 Hz cooling capacity *1 kW *1 kcal/h 1,450 1,900 2,400 3,100 3,900 4,800 *1 BTU/h 5,800 7,500 9,600 12,300 15,400... - Page 12 3-2. ELECTRICAL PARTS SPECIFICATIONS Service ref. Symbol PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH Parts name Thermistor (Room temperature TH21 Resistance 0:/15", 10:/9.6v, 20:/6.3", 25:/5.4", 30:/4.3", 40:/3.0" detection) Thermistor (Pipe temperature TH22 Resistance 0:/15", 10:/9.6", 20:/6.3", 25:/5.4", 30:/4.3", 40:/3.0" detection/Liquid) Thermistor (Pipe temperature TH23 Resistance 0:/15", 10:/9.6", 20:/6.3", 25:/5.4", 30v/4.3", 40:/3.0"...
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Page 13: Way Airflow System
4-WAY AIRFLOW SYSTEM 4-1. 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 (mm) Burring hole Cutout hole... - Page 14 4-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedures 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 15: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH Unit: mm TCH061 TCH061.indd 15 TCH061.indd 15 24/6/2564 16:45:58 24/6/2564 16:45:58... -
Page 16: Wiring Diagram
WIRING DIAGRAM PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH I-SEE SENSOR GRILLE CORNER PANEL (OPTION PART) POWER SUPPLY SENSOR ~/N 220-240V 50Hz 220V 60Hz See fig.1 (OG) (BU) SW21 SW22 SW14 SW12 SW11 (OG) (BU) CN4Z 1 2 3 4 5 6 1 2 3 4 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6... -
Page 17: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH 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 Unit: mm (inch) Gas pipe [12.7(1/2) -
Page 18: Troubleshooting
TROUBLESHOOTING 8-1. COUNTERMEASURES FOR ERROR DURING TEST RUN If a problem occurs during test run, a code number will appear on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating. Refer to the connected outdoor unit service manual in order to determine the nature of the abnormality and apply corrective measure. - Page 19 8-2. HOW TO CHECK THE PARTS PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH Parts name Check points Thermistor (TH21) Disconnect the connector then measure the resistance with a tester. (Room temperature detection) (At the ambient temperature 10 to 30:) Thermistor (TH22) (Pipe temperature detection/Liquid) Normal Abnormal...
- Page 20 8-2-1. Thermistor Characteristic Graph Thermistor (TH21) < Thermistor for lower temperature > Thermistor for (Room temperature detection) lower temperature Thermistor (TH22) (Pipe temperature detection/Liquid) Thermistor (TH23) (Pipe temperature detection/Gas) Thermistor R =15 kΩ ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 273+t 15 kΩ...
- Page 21 <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. •...
- Page 22 8-2-3. DC Fan Motor (Fan Motor/Indoor Controller Board) Check method of indoor fan motor (fan motor/indoor controller board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller board and fan motor.) Self check Conditions : The indoor fan cannot turn around.
- Page 23 8-3. FUNCTION OF DIP SWITCH Operation by switch Effective Switch Pole Function Remarks timing Thermistor Built-in remote <Room temperature Indoor unit controller detection> position Filter clogging Provided Not provided detection Filter cleaning 2,500h 100h Indoor controller board Fresh air intake Effective Not effective Under...
- Page 24 Operation by switch Effective Switch Pole Function Remarks timing Setting ceilling height Depends on SW21-1, SW21-2 <Initial setting> Under — — operation — — 1 2 3 4 5 6 suspension — — SW21 — — Function selection SW21-1 SW21-2 Height Silent ─...
- Page 25 8-4. TEST POINT DIAGRAM Indoor controller board PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH Vane motor (MV) 12 V pulse output LED2 Power supply (Wired remote controller) CN51 CN32 Centrally control Remote switch – : Control signal 12 V DC pulse input ( : +) –...
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Page 26: Disassembly Procedure
DISASSEMBLY PROCEDURE PLFY-P15VFM-E1R1.TH PLFY-P20VFM-E1R1.TH PLFY-P25VFM-E1R1.TH PLFY-P32VFM-E1R1.TH PLFY-P40VFM-E1R1.TH PLFY-P50VFM-E1R1.TH Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the air intake grille and air filter Photo 1 Grille hook (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. - Page 27 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the electrical parts Photo 4 Control box cover (1) Loosen the 2 screws on the control box cover. (2) Slide the control box cover as indicated by the arrow to remove. <Electrical parts in the control box> •...
- Page 28 OPERATING PROCEDURE PHOTOS/FIGURES Photo 8 6. Removing the pipe temperature thermistor/liquid (TH22) and pipe temperature thermistor/gas (TH23) Fan motor (1) Remove the panel. (Refer to procedure 2) Band cable (2) Remove the room temperature thermistor (TH21). Pipe temperature (Refer to procedure 4) thermistor/Gas (TH23) (3) Remove the drain pan.
- Page 29 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the drain pump (DP) and float switch (FS) Photo 11 Clamp (1) Remove the panel. (Refer to procedure 2) (2) Remove the room temperature thermistor (TH21). Screw (Refer to procedure 4) Inner cover (3) Remove the control box cover. (Refer to procedure 3) (4) Remove the drain pan.
- Page 30 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN MITSUBISHI ELECTRIC CONSUMER PRODUCTS (THAILAND) CO., LTD. 700/406 MOO 7, TAMBON DON HUA ROH, AMPHUR MUANG, CHONBURI 20000 THAILAND New publication, effective Jul. 2021 Made in Thailand Specifications subject to change without notice TCH061.indd 30...