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Mitsubishi Electric CITY MULTI PKFY Series Technical & Service Manual

Wall mounted, split-type, heat pump air conditioners
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name]
PKFY-WL10VLM-E
PKFY-WL15VLM-E
PKFY-WL20VLM-E
PKFY-WL25VLM-E
PKFY-WL32VLM-E
PKFY-WL40VLM-E
INDOOR UNIT
[Service Ref.]
PKFY-WL10VLM-E.TH
PKFY-WL15VLM-E.TH
PKFY-WL20VLM-E.TH
PKFY-WL25VLM-E.TH
PKFY-WL32VLM-E.TH
PKFY-WL40VLM-E.TH
Model name
indication
CONTENTS
1. SAFETY PRECAUTION .......................... 2
3. SPECIFICATION ................................... 11
4. NOISE CRITERION CURVES ............... 14
6. WIRING DIAGRAM ............................... 18
8. TROUBLESHOOTING .......................... 19
9. DISASSEMBLY PROCEDURE ............. 26
PARTS CATALOG (OCB711)
October 2019
No. OCH711

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Summary of Contents for Mitsubishi Electric CITY MULTI PKFY Series

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS October 2019 No. OCH711 TECHNICAL & SERVICE MANUAL Indoor unit [Model Name] [Service Ref.] PKFY-WL10VLM-E.TH PKFY-WL10VLM-E PKFY-WL15VLM-E.TH PKFY-WL15VLM-E PKFY-WL20VLM-E.TH PKFY-WL20VLM-E PKFY-WL25VLM-E.TH PKFY-WL25VLM-E PKFY-WL32VLM-E.TH PKFY-WL32VLM-E PKFY-WL40VLM-E.TH PKFY-WL40VLM-E CONTENTS 1. SAFETY PRECAUTION ......2 2. PARTS NAMES AND FUNCTIONS ..3 3.

  • Page 2: Safety Precaution

    Indicates a parts that requires grounding. ing the safety features for these devices, or the use of accessories other than the ones that are recommended by Mitsubishi Electric may result in smoke, Indicates that caution must be taken with rotating parts. (This fire, or explosion.

  • Page 3: Parts Names And Functions

    PARTS NAMES AND FUNCTIONS 2-1. Indoor unit Filter Air intake Emergency operation switch Front Panel Operation indicator lamp Vane Louver Air outlet Remote control receiving section 2-2. Wired Remote Controller <PAR-40MAA> Wired remote controller function The functions which can be used are restricted according to each model. : Supported : Unsupported PAR-40MAA...
  • Page 4 Controller interface The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.
  • Page 5 Display 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. (Refer to operation manual included with remote controller.) <Full mode>...
  • Page 6 Menu structure Main menu Press the button. MENU Move the cursor to the desired item with the buttons, and press the button. SELECT Operation Vane · Louver · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-see Sensor Timer menu Timer ON/OFF timer Auto-OFF timer...
  • Page 7 Continue from the previous page. Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Service menu Test run menu Test run Drain pump test run Maintenance information Model name input Serial No. input Dealer information input Initialize maintenance info.
  • Page 8 Main menu list Main Setting and display items Setting details menu Operation 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. •...
  • Page 9 Main Setting and display items Setting details menu Initial Basic Main/Sub When connecting 2 remote controllers, one of them needs to be designated as setting setting a sub controller. Clock Use to set the current time.　 Daylight Set the daylight saving time. saving time Administrator The administrator password is required to make the settings for the following...
  • Page 10 2-3. Wireless remote controller Controller interface Transmission area Remote controller display Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/ i-see button* down airflow direction) Timer ON button Menu button Timer OFF button SET/SEND button Weekly timer ON/OFF button*...

  • Page 11: Specification

    SPECIFICATION 3-1. SPECIFICATIONS Model PKFY-WL10VLM-E PKFY-WL15VLM-E PKFY-WL20VLM-E PKFY-WL25VLM-E Power source 1-phase 220-240 V 50 Hz, 1-phase 220 V 60 Hz Cooling capacity (Nominal) kcal/h 1000 1500 1900 2400 BTU/h 4100 5800 7500 9600 Power input 0.02 0.02 0.03 0.04 Current input A 0.20 0.20 0.25...
  • Page 12 Model PKFY-WL32VLM-E PKFY-WL40VLM-E Power source 1-phase 220-240 V 50 Hz, 1-phase 220 V 60 Hz Cooling capacity (Nominal) kcal/h 3100 3900 BTU/h 12300 15400 Power input 0.04 0.05 Current input A 0.35 0.45 Heating capacity (Nominal) kcal/h 3400 4300 BTU/h 13600 17100 Power input...
  • Page 13 3-2. ELECTRICAL PARTS SPECIFICATIONS Service ref. PKFY-WL10VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL40VLM-E.TH Symbol PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH Parts name 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 thermistor/liquid Pipe temperature TH23 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"...

  • Page 14: Noise Criterion Curves

    NOISE CRITERION CURVES NOISE CRITERION CURVES PKFY-WL15VLM-E.TH SPL(dB) LINE PKFY-WL10VLM-E.TH SPL(dB) 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 minimum NC-20 Approximate minimum audible limit on NC-20 audible limit on continuous noise continuous noise 1000...
  • Page 15 PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH SPL(dB) SPL(dB) LINE 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 minimum Approximate minimum audible limit on NC-20 NC-20 audible limit on continuous noise continuous noise 1000 2000 4000 8000 1000...

  • Page 16: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH Unit: mm OCH711...
  • Page 17 PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH Unit: mm OCH711...

  • Page 18: Wiring Diagram

    WIRING DIAGRAM PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH fig: *1> < The black square (■) indicates When attaching drain When attaching drain pump pump(option), remove a switch position. (option) TO NEXT the jumper connector Models Models INDOOR CN4F and fit the drain UNIT float switch (FS).

  • Page 19: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH Pipe temperature detection thermistor/ inlet TH22 Water inlet connection Unit: in Model Manual air purge valve PKFY-WL10/15/20/25/32/40VLM-E Item Pipe temperature detection thermistor/ outlet Water inlet Rc3/4 screw TH23 Water outlet Water outlet Rc3/4 screw connection Heat exchanger...
  • Page 20 Parts name Check points Pressure sensor ▪ Pressure sensor (inner water) PS1 (Optional parts) ▪ Pressure sensor (outlet water) PS2 1. Check that the pressure sensor is connected. 2. Check the pressure sensor wiring for breakage. GND(Blue) GND(RED) Connector Vout(White) Vout(Brown) CNSB Pressure 0-1.0 MPa [145 psi] Vout 0.5-4.5 V...
  • Page 21 2 FCV operation Close Open Fully open valve (85 pulses) Fully close valve (770 pulses) No. of pulses Valve opening degree 8-1-3. DC Fan motor (fan motor/indoor controller board) Check method of indoor fan motor (fan motor/indoor controller board) Notes ·...
  • Page 22 8-2. FUNCTION OF DIP SWITCH PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH The black square ( ) indicates a switch position. Operation by switch Effective Switch Pole Function Remarks timing Thermistor Built-in remote <Intake temperature Indoor unit Address board controller detection> position <Initial setting>...
  • Page 23 The black square ( ) indicates a switch position. Effective Switch Pole Function Remarks timing Fan speed can be changed depending on SWA Address board setting. (High ceiling) Under <Initial setting> Setting operation (Standard) It follows as the left table. (Fan speed) PKFY-WL ** VLM-E suspension...
  • Page 24 8-3. TEST POINT DIAGRAM 8-3-1. Indoor controller board (I.B) PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH CN105 CN2M LED1 IT Terminal M-NET transmission connecting wire Vane motor (MV1,MV2) Main power supply 24 − 30 VDC (non-polar) 12 VDC pulse output (Indoor unit : 220 − 240V) CN8A Flow control valve(FCV) 12 VDC pulse output...
  • Page 25 8-3-2. PCB FOR WIRELESS REMOTE CONTROLLER (W.B), SWITCH BOARD (S.B) and LED BOARD (L.B) PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH PCB FOR WIRELESS SWITCH BOARD (S.B) LED BOARD (L.B) REMOTE CONTROLLER (W.B) SWE1 Emergency operation (HEAT) SWE2 CN302 REC1 Emergency operation (COOL) Connect to Receiving unit INDOOR...

  • Page 26: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKFY-WL10VLM-E.TH PKFY-WL15VLM-E.TH PKFY-WL20VLM-E.TH PKFY-WL25VLM-E.TH PKFY-WL32VLM-E.TH PKFY-WL40VLM-E.TH Be careful when removing heavy parts. NOTE: Turn OFF the power supply before assembly. OPERATION PROCEDURE PHOTOS/FIGURES 1. REMOVING THE PANEL Photo 1 (1) Insert the screwdriver to the hole at VANE LOWER shaft VANE UPPER shaft VANE UPPER and slide the VANE LOWER shaft (2 places each).
  • Page 27 OPERATION PROCEDURE PHOTOS/FIGURES 3. REMOVING THE ADDRESS BOARD, THE INDOOR Photo 4 CONTROLLER BOARD, THE WIRELESS Holder of wireless remote CONTROLLER BOARD, LED BOARD Switch board holder controller board and LED board (Holder of switch board) (1) Remove the panel and the corner box. (Refer to procedure 1) (2) Remove the front and side electrical box covers (each 2 Address board...
  • Page 28 OPERATION PROCEDURE PHOTOS/FIGURES 6. REMOVING THE INDOOR FAN MOTOR AND THE Photo 8 LINE FLOW FAN Lead wire of pipe thermistor (1) Remove the panel and the corner box. (Refer to procedure 1) Motor band (2) Remove the electrical box (Refer to procedure 2) and the nozzle assembly (Refer to procedure 4).
  • Page 29 OPERATION PROCEDURE PHOTOS/FIGURES 8. REMOVING THE HEAT EXCHANGER Photo 12 (1) Remove the panel and the corner box (Refer to procedure 1). Heat exchanger (2) Remove the electrical box (Refer to procedure 3) and the nozzle assembly (Refer to procedure 4). (3) Remove the water cover.
  • Page 30 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2019 MITSUBISHI ELECTRIC CORPORATION Published: Oct. 2019 No. OCH711 Made in Japan Specifications are subject to change without notice.

This manual is also suitable for:

City multi pkfy-wl10vlm-eCity multi pkfy-wl15vlm-eCity multi pkfy-wl20vlm-eCity multi pkfy-wl25vlm-eCity multi pkfy-wl32vlm-eCity multi pkfy-wl40vlm-e

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