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Mitsubishi Electric CITY MULTI Series Technical & Service Manual

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See also: Technical & Service Manual , Installation Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
[Model Name]
INDOOR UNIT
[Service Ref.]
PKFY-P06NBMU-E2
Model name
indication
REVISED EDITION-B
R410A
Revision:
Added
PKFY-P06NBMU-E2R1 in
REVISED EDITION-B.
Some descriptions have
been modified.
OCH516 REVISED EDITION-A
is void.
Notes:
This manual describes only
service data of the indoor
units.
RoHS compliant products
have <G> mark on the
spec name plate.
CONTENTS
Technical Changes ............................. 2
1. SAFETY PRECAUTION .......................... 2
3. SPECIFICATION ................................... 10
5. WIRING DIAGRAM ............................... 14
8. TROUBLESHOOTING .......................... 22
9. DISASSEMBLY PROCEDURE ............. 29
PARTS CATALOG (OCB516)
July 2016
No. OCH516

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  • Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2016 No. OCH516 REVISED EDITION-B TECHNICAL & SERVICE MANUAL R410A Indoor unit Revision: [Model Name] [Service Ref.] Added PKFY-P06NBMU-E2R1 in PKFY-P06NBMU-E2 PKFY-P06NBMU-E2 REVISED EDITION-B. Some descriptions have PKFY-P06NBMU-E2R1 been modified. OCH516 REVISED EDITION-A is void. Notes: This manual describes only service data of the indoor...

  • Page 2: Technical Changes

    TECHNICAL CHANGES PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 HEAT EXCHANGER and LEV have been changed. 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: Parts Names And Functions

    PARTS NAMES AND FUNCTIONS 2-1. Indoor unit Air intake Filter Grille Vane Louver Air outlet 2-2. Wired Remote Controller <PAR-32MAA> <PAC-YT53CRAU> Wired remote controller function The functions which can be used are restricted according to each model. : Supported : Unsupported PAR-32MAA Function PAC-YT53CRAU...
  • Page 4 2-2-1. Wired Remote Controller <PAR-32MAA> 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 The main display can be displayed in 2 different modes: "Full" and "Basic". The initial 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. 2345 Cool Set temp.
  • Page 6 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 Schedule...
  • Page 7 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 8 Setting and display items Setting details 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. Model name input Serial No. input Dealer information input LOSSNAY This setting is required only when the operation of City Multi units is interlocked with...

  • Page 9: Fan Button

    2-2-2. Wired Remote Controller <PAC-YT53CRAU> Note: The phrase "Wired remote controller" in this manual refers only to the PAC-YT53CRAU. If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in remote controller's box.

  • Page 10: Specification

    SPECIFICATION PKFY-P06NBMU-E2 Service Ref. PKFY-P06NBMU-E2R1 1-phase 208/230V 60Hz Power source Cooling capacity (Nominal) BTU/h 6,000 0.03 Power input 0.15 Current input Heating capacity (Nominal ) BTU/h 6,700 0.03 Power input 0.15 Current input External finish Plastic, MUNSELL (1.0Y 9.2/0.2) External dimension H × W × D inch 11-5/8"...
  • Page 11 Service Ref. PKFY-P06NBMU-E2 Symbol PKFY-P06NBMU-E2R1 Parts name Room temperature 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" TH21 detection thermistor Pipe temperature detection 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" TH22 thermistor/liquid Pipe temperature detection TH23 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" thermistor/gas Fuse FUSE...

  • Page 12: Sound Levels

    3-3. Sound levels Sound level at anechoic room : Low-Middle2-Middle1-High Sound level dB (A) Service Ref. PKFY-P06NBMU-E2 32-33-35-36 PKFY-P06NBMU-E2R1 3.3 ft. (1m) Measurement location * Measured in anechoic room. 3-4. NC curve PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 External static pressure : 0Pa Power source : 208,230V, 60Hz 70.0 High speed 65.0...

  • Page 13: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PKFY-P06NBMU-E2 Unit : inch (mm) 30-13/16(783) PKFY-P06NBMU-E2R1 Emergency operation Emergency operation Receiver DEFROST/STAND BY lamp 32-3/32(815) Operation lamp 8-55/64(225) 25-3/16(640) 4-1/2(115) Air intake Air intake 4-3/16(106.7) (Direction) 1/8(3) installation plate Power supply Transmission Terminal block Address board Air intake (Direction) Air intake...

  • Page 14: Wiring Diagram

    WIRING DIAGRAM PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME I. B INDOOR CONTROLLER BOARD FAN MOTOR A. B ADDRESS BOARD VANE MOTOR CN32 CONNECTOR REMOTE SWITCH SWITCH MODE SELECTION CN51 CENTRALLY CONTROL LINEAR EXPANSION VALVE VOLTAGE SELECTION CN52 REMOTE INDICATION POWER SUPPLY SW11...

  • Page 15: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 Pipe temperature detection thermistor/gas TH23 Gas pipe Flare Strainer Pipe temperature detection (#100mesh) thermistor/liquid TH22 Liquid pipe Strainer Heat exchanger (#100mesh) Linear expansion valve Room temperature detection thermistor Strainer TH21 (#100mesh) Unit: inch (mm) Service ref. PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 Item...

  • Page 16: Microprocessor Control

    MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 7-1. COOL OPERATION <How to operate> 1 Press button. 2 Press [F1] button to display COOL. 3 Press [F2] [F3] button to set the desired temperature. NOTE: The settable temperature range varies with the model of outdoor units and remote controller.

  • Page 17: Dry Operation

    7-2. DRY OPERATION <How to operate> 1 Press button. 2 Press [F1] button to display DRY. 3 Press [F2] [F3] button to set the desired temperature. <How to operate> 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display DRY. 3 Press the TEMP.

  • Page 18: Fan Operation

    7-3. FAN OPERATION <How to operate> 1 Press button. 2 Press [F1] button to display FAN. <How to operate> 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display FAN. Control Mode Control Details Remarks 1. Fan Set by remote controller.

  • Page 19: Heat Operation

    7-4. HEAT OPERATION <How to operate> 1 Press button. 2 Press [F1] button to display HEAT. 3 Press [F2] [F3] button to set the desired temperature. NOTE: The settable temperature range varies with the model of outdoor units and remote controller. <How to operate>...
  • Page 20 Control Mode Control Details Remarks 2-2. Residual heat exclusion mode This control operates the same for the model When the condition changes the auxiliary heater ON to OFF (thermostat or operation without auxiliary heater. stop, etc), the indoor fan operates in [Low] mode for 1 minute. 2-3.
  • Page 21 7-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION] <How to operate> 1 Press button. 2 Press [F1] button to display AUTO. 3 Press [F2] [F3] button to set the desired temperature. NOTE: The settable temperature range varies with the model of outdoor units and remote controller.

  • Page 22: Troubleshooting

    TROUBLESHOOTING 8-1. HOW TO CHECK THE PARTS PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester. detection thermistor (At the ambient temperature 50 to 86°F) (TH21) Pipe temperature Normal Abnormal detection thermistor/liquid Refer to “8-1-1.
  • Page 23 8-1-1. Thermistor < Thermistor for lower temperature > <Thermistor characteristic graph> Room temperature detection thermistor (TH21) Thermistor for Pipe temperature detection thermistor/liquid (TH22) lower temperature Pipe temperature detection thermistor/gas (TH23) Thermistor R Rt=15exp { 3480( 273+(t-32)/1.8 Temperature (°F) 8-1-2. Liner expansion valve Operation summary of the linear expansion valve <Connection between the indoor controller board and the linear expansion valve>...
  • Page 24 <Output pulse signal and the valve operation> Output Output (Phase) The output pulse shifts in above order. Note: become OFF. does not rotate smoothly and motor will lock and vibrate. Linear expansion valve operation be sent till it goes to point in order to define the valve position.
  • Page 25 8-2. Function of DIP switch PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 Operation by switch Effective Switch Pole Function Remarks timing Thermistor Built-in remote <Room temperature Indoor unit Address board controller detection> position <Initial setting> Filter clogging Provided Not provided detection Filter cleaning sign 2,500 hr 100 hr 1 2 3 4 5 6 7 8 9 10 Fresh air intake*...
  • Page 26 Effective Switch Pole Function Remarks timing SW11 SW12 SW11 Address board 1s digit address How to set addresses <Initial setting> setting Example: If address is "3", remain SW12 SW12 SW11 SW12 (for over 10) at "0", and match SW11 (for 1 to 9) 10s digit Before address...
  • Page 27 8-3. TEST POINT DIAGRAM 8-3-1. Indoor controller board PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 CN60 CN5V CN81 CN90 CN29 Linear expansion valve Vane motor output Connected to the Connected to the wireless Pipe temperature detection output (LEV) (MV) address board (CN82) remote controller board (W.B) thermistor/gas (TH23) 12 V DC pulse output 12 V DC pulse output...
  • Page 28 8-3-2. Indoor power board PKFY-P06NBMU-E2 Power supply for indoor controller board PKFY-P06NBMU-E2R1 Fan motor output (MF) Between 1 to 3 208/230 V AC CN2M Connected to the terminal block (TB5) FUSE (M-NET transmission connecting wire) 6A 250V 24–30 V DC (non-polar) CN35P Connected to the indoor controller board (CN35M)

  • Page 29: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1 Be careful when removing heavy parts. OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 1. Removing the lower side of the indoor unit from the Figure 1 Figure 2 installation plate When there is removing plate (1) Remove the corner box at right lower side of the indoor unit and remove the removing plate from the corner box.

  • Page 30: Operation Procedure

    OPERATION PROCEDURE PHOTOS 3. Removing the indoor controller board and indoor power Photo 2 board Electrical box (1) Remove the front panel. (Refer to procedure 2) cover (2) Remove the electrical box cover (screw 4 × 10). (See Photo 2) INDOOR CONTROLLER BOARD Screw for (1) Disconnect the following connectors on the indoor...
  • Page 31 OPERATION PROCEDURE PHOTOS 6. Removing the electrical box Photo 6 Indoor controller board (1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2) (3) Remove the water cut. (See Photo 3) Screw for Linear (4) Pull the nozzle assembly toward you as opening the catch ground wire...
  • Page 32 OPERATION PROCEDURE PHOTOS 8. Removing the vane motor Photo 10 (1) Remove the front panel. (Refer to procedure 2) (2) Remove the screw of the electrical parts box cover, and remove the cover. Heat exchanger (3) Remove the 2 screws of the vane motor. Disconnect the relay connector and remove the motor Vane motor fixing from the shaft.
  • Page 33 OCH516B...
  • Page 34 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN Copyright 2012 MITSUBISHI ELECTRIC CORPORATION Issued: Jul. 2016 No. OCH516 REVISED EDITION-B Issued: Sep. 2012 No. OCH516 REVISED EDITION-A Published: Apr. 2012 No. OCH516 Made in Japan Specifications are subject to change without notice.

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City multi pkfy-p06nbmu-e2City multi pkfy-p06nbmu-e2r1

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