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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name]
PLFY-P15VFM-E
PLFY-P20VFM-E
PLFY-P25VFM-E
PLFY-P32VFM-E
PLFY-P40VFM-E
PLFY-P50VFM-E
Model name
indication
INDOOR UNIT
[Service Ref.]
PLFY-P15VFM-E.TH
PLFY-P20VFM-E.TH
PLFY-P25VFM-E.TH
PLFY-P32VFM-E.TH
PLFY-P40VFM-E.TH
PLFY-P50VFM-E.TH
R410A
Note:
• This manual describes service data
of the indoor units only.
• RoHS compliant products have
<G> mark on spec name plate.
CONTENTS
1. SAFETY PRECAUTION .......................... 2
2. PARTS NAMES AND FUNCTIONS ........ 4
3. SPECIFICATIONS ................................. 12
4. 4-WAY AIR FLOW SYSTEM ................. 14
5. OUTLINES AND DIMENSIONS ............ 16
6. WIRING DIAGRAM ............................... 17
7. REFRIGERANT SYSTEM DIAGRAM ...... 18
8. TROUBLESHOOTING .......................... 19
9. DISASSEMBLY PROCEDURE ............. 27
PARTS CATALOG (OCB601)
October 2015
No. OCH601
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Related Manuals for Mitsubishi Electric CITY MULTI PLFY-P15VFM-E
Summary of Contents for Mitsubishi Electric CITY MULTI PLFY-P15VFM-E
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS October 2015 No. OCH601 TECHNICAL & SERVICE MANUAL R410A Indoor unit Note: [Model Name] [Service Ref.] • This manual describes service data PLFY-P15VFM-E.TH of the indoor units only. PLFY-P15VFM-E • RoHS compliant products have <G> mark on spec name plate. PLFY-P20VFM-E.TH PLFY-P20VFM-E PLFY-P25VFM-E.TH... -
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 Room Set temp. Cool Auto Mode Temp. The main display can be displayed in two 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>...
- 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 five 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. WIRED REMOTE CONTROLLER <PAR-21MAA> “Sensor” indication Display Section Displays when the remote controller sensor is used. Day-of-Week For the purpose of explanation, Shows the current day of the week. all parts of the display are shown. During actual operation, only Time/Timer Display the relevant items will be lit.
- Page 11 2-4. Wireless remote controller CHECK TEST RUN display display CHECK and TEST RUN display indicate that the unit is being checked or test-run. Lights up while the signal is transmitted to display the indoor unit when the button is pressed. MODEL SELECT display Blinks when model is selected.
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Page 12: Specifications
SPECIFICATIONS 3-1. SPECIFICATIONS Service Ref. PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 13 3-2. ELECTRICAL PARTS SPECIFICATIONS Service ref. Symbol PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 14: Way Air Flow System
4-WAY AIR FLOW 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 Burring hole Cut out hole 120°... - Page 15 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 16: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.TH Unit: mm 7.5~24.5 576~610 Ceiling hole 7.5~24.5 Grille Ceiling 2500mm or more Min 500mm (Entire periphery) from floor Obstacle Floor Maintenance space Suspension bolt pitch Min450 Drain pipe VP-25 connection Refrigerent pipe (gas):{12.7 Flared connection:1/2F Suspension bolt M10 or W3/8... -
Page 17: Wiring Diagram
WIRING DIAGRAM PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 18: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 19: 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 20 8-2. HOW TO CHECK THE PARTS PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 21 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 22 <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 23 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 24 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 25 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 26 8-4. TEST POINT DIAGRAM Indoor controller board PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.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 27: Disassembly Procedure
DISASSEMBLY PROCEDURE PLFY-P15VFM-E.TH PLFY-P20VFM-E.TH PLFY-P25VFM-E.TH PLFY-P32VFM-E.TH PLFY-P40VFM-E.TH PLFY-P50VFM-E.TH Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS Figure 1 1. Removing the air intake grille and air filter (1) Slide the knob of air intake grille to the direction of the arrow Grille hook Air intake grille 1 to open the air intake grille. - Page 28 OPERATING PROCEDURE PHOTOS 3. Removing the electrical parts Control box cover Photo 4 (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 29 OPERATING PROCEDURE PHOTOS 6. Removing the pipe temperature thermistor/liquid (TH22) Photo 8 Pipe temperature Fan motor thermistor/Gas (TH23) and pipe temperature thermistor/gas (TH23) Band cable (1) Remove the panel. (Refer to procedure 2) (2) Remove the room temperature thermistor (TH21). (Refer to procedure 4) (3) Remove the drain pan.
- Page 30 OPERATING PROCEDURE PHOTOS 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). (Refer to Screw Inner cover procedure 4) (3) Remove the control box cover. (Refer to procedure 3) (4) Remove the drain pan.
- Page 31 OCH601...
- Page 32 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN New publication, effective Oct. 2015 cCopyright 2015 MITSUBISHI ELECTRIC CORPORATION Specifications are subject to change without notice. Distributed in Oct. 2015 No. OCH601 Made in Japan...