Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Technical & Service Manual
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Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Technical & Service Manual

Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Technical & Service Manual

Split-type, heat pump air conditioners
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[Model names]
[Service Ref.]
PMFY-P06NBMU-ER6
PMFY-P06NBMU-E
PMFY-P08NBMU-ER6
PMFY-P08NBMU-E
PMFY-P12NBMU-ER6
PMFY-P12NBMU-E
PMFY-P15NBMU-ER6
PMFY-P15NBMU-E
INDOOR UNIT
November 2023
R410A
CONTENTS
1. FEATURES ........................................... 2
3. SPECIFICATION ................................... 3
5. WIRING DIAGRAM ............................... 8
7. TROUBLESHOOTING ........................ 10
9. REMOTE CONTROLLER ................... 22
No. OCH845

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RONALD L BENSON
April 5, 2025

can this unit be mounted in a ceiling sloped 4 vertical to 12 horizontal or 19 degrees?

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Summary of Contents for Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS November 2023 No. OCH845 TECHNICAL & SERVICE MANUAL R410A Indoor unit [Model names] [Service Ref.] PMFY-P06NBMU-ER6 PMFY-P06NBMU-E PMFY-P08NBMU-ER6 PMFY-P08NBMU-E PMFY-P12NBMU-ER6 PMFY-P12NBMU-E PMFY-P15NBMU-ER6 PMFY-P15NBMU-E CONTENTS 1. FEATURES ........... 2 2. PART NAMES AND FUNCTIONS ..2 3.

  • Page 2: Features

    Use the specified refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

  • Page 3: Specification

    SPECIFICATION 3-1. SPECIFICATIONS Service ref. PMFY-P06NBMU-ER6 PMFY-P08NBMU-ER6 PMFY-P12NBMU-ER6 PMFY-P15NBMU-ER6 Item Power V · H Single phase 208-230V 60Hz Cooling capacity Btu/h 6,000 8,000 12,000 15,000 Heating capacity Btu/h 6,700 9,000 13,500 17,000 Cooling 0.04 0.04 0.04 0.05 Input Heating 0.04 0.04 0.04 0.05...

  • Page 4: Electrical Parts Specifications

    3-2. ELECTRICAL PARTS SPECIFICATIONS Service Ref. Symbol PMFY-P06NBMU-ER6 PMFY-P08NBMU-ER6 PMFY-P12NBMU-ER6 PMFY-P15NBMU-ER6 Parts name Room temperature TH21 Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ thermistor Liquid pipe thermistor TH22 Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ Gas pipe thermistor TH23 Fuse...
  • Page 5 3-3. AIR CAPACITY TAKEN FROM OUTSIDE PMFY-P·NBMU-E series are capable of taking air from outside. When taking air from outside, the duct fan is used. The air capacity should be 20% or less of the airflow SPEC (Hi). 9-13/16 11-3/8 4-Ø1/8 Fresh air intake hole Fresh air intake hole...
  • Page 6 3-4. NOISE CRITERION CURVES PMFY-P06NBMU-ER6 PMFY-P08/12NBMU-ER6 NOTCH SPL(dB) LINE SPL(dB) LINE NOTCH 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 THRESHOLD OF NC-20 HEARING FOR NC-20 CONTINUOUS APPROXIMATE THRESHOLD OF HEARING NOISE FOR CONTINUOUS NOISE 1000...

  • Page 7: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : inch (mm) OCH845...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM OCH845...

  • Page 9: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Thermistor TH23 Strainer (#100mesh) <Gas pipe temperature detection> Gas pipe Thermistor TH22 <Liquid pipe temperature detection> Flare connection Liquid pipe Heat exchanger Linear expansion valve Strainer (#50mesh) Strainer (#100mesh) Strainer pipe (#100mesh) Thermistor TH21 <Room temperature detection> Unit:in.(mm) Unit: in(mm) Service Ref.

  • Page 10: Troubleshooting

    TROUBLESHOOTING 7-1. HOW TO CHECK THE PARTS Parts name Checkpoints Thermistor (TH21) Disconnect the connector then measure the resistance with a tester. <Room temperature (At the ambient temperature 50˚F~86˚F) detection> Thermistor (TH22) Normal Abnormal Refer to the next page for the details. <Liquid pipe temperature 4.3k"...

  • Page 11: Linear Expansion Valve

    <Thermistor characteristic graph> < Thermistor for lower temperature > Thermistors for Thermistor <Room temperature detection> (TH21) lower temperature Thermistor <Liquid pipe temperature detection> (TH22) Thermistor <Gas pipe temperature detection> (TH23) Thermistor R =15kΩ ± 3% Fixed number of B=3480 ± 1% Rt=15exp { 3480( 273+(t-32)/1.8 30°F...
  • Page 12 <Output pulse signal and the valve operation> Output Output (Phase) The output pulse shifts in the following order. ø1 Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 ø2 ø3 •...

  • Page 13: Fan Motor Check

    7-2. FAN MOTOR CHECK Check method of indoor fan motor (fan motor/controller board) Notes · High voltage is applied to the connecter (CNMF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNMF1, 2) for the motor with the power supply on, doing so may result in damage to the board.
  • Page 14 7-3. FUNCTION OF DIP SWITCH Operation by switch Effective Switch Pole Function Remarks timing Thermistor <Room temperature Built-in remote controller Indoor unit Address board detection> position Filter clogging detection Provided Not provided <Initial setting> Filter cleaning sign 2,500h 100h Fresh air intake Effective Not effective 1 2 3 4 5 6 7 8 9 10...
  • Page 15 Effective Switch Pole Operation by switch Remarks timing SW11 Address board 1s digit How to set addresses address SW12 SW11 <Initial setting> Example : If address is “3”, remain SW12 setting SW12 SW11 (for over 10) at “0”, and match SW11 (for 1 to 9) SW12 with “3”.

  • Page 16: Test Point Diagram

    7-4. TEST POINT DIAGRAM 7-4-1. Indoor controller board Power supply Drain pump output (DP) : 208-230V AC : 208-230V AC FUSE 6.3A 250V CNMF1, CNMF2 FAN motor CNMF1 -CNMF21 : 294-325V DC CNMF2 - : 15V DC CNMF2 - : 0-6.5V DC CNMF2 - : 0-15V DC LED1...
  • Page 17 7-4-2. Address board Voltage selector Function setting SW12 SW11 SW14 Address setting Address setting Branch No. 10ths DIGIT 1s DIGIT OCH845...

  • Page 18: Disassembly Procedure

    DISASSEMBLY PROCEDURE Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES Photo 1 Air intake grille 1. Removing the grille Opening the air intake grille Air outlet (1) Press the of the air intake grille. (See Figure 1) PUSH grille (2) Put your fingers on the both ends of nut of the air intake grille and put it down after the grille clicked.
  • Page 19 OPERATING PROCEDURE PHOTOS/FIGURES Figure 6 Hooks Removing the grille (1) Open the intake grille by pressing of the air intake PUSH grille and remove the air filter (× 2). (See Figure 1) (2) Remove the screw cover in the middle of the air outlet. (See Figure 7) (3) Open the upper and lower flaps on the indoor unit com- pletely.
  • Page 20 OPERATING PROCEDURE PHOTOS/FIGURES Photo 2 2. Removing the electrical parts box Claw in middle Nozzle Electrical parts of nozzle (1) Remove the panel. (2) Remove the address board cover. (3) Remove the electrical parts cover. (4) Disconnect the connectors of fan motor, vane motor, drain pump, room temperature thermistor, pipe temperature thermistor (Liquid.
  • Page 21 OPERATING PROCEDURE PHOTOS/FIGURES Photo 6 5. Removing the drain pump (1) Remove the panel. (2) Unhook the claw in the middle of nozzle and remove the Drain sensor drain pan. (See Photo 2) (3) Remove the address board cover. (See Photo 3) Drain pump (4) Remove the electrical parts cover.

  • Page 22: Remote Controller

    REMOTE CONTROLLER 9-1. REMOTE CONTROLLER FUNCTIONS <PAR-41MAA> 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 23 Display The main display can be displayed in two different modes: ˝Full˝ and ˝Basic˝. The initial 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 24: Menu Structure

    Menu structure Main menu Operation Vane · Louver · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-see Sensor Timer menu Timer ON/OFF timer Auto-OFF timer Weekly timer OU silent mode Energy saving Restriction Temp. range Operation locked Energy saving Auto return Schedule Initial setting menu...
  • Page 25 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 26 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. Use to turn ON/OFF the louver. • Select a desired setting from ˝ON˝ and ˝OFF.˝ Use to set the amount of ventilation.
  • Page 27 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 28: Controller Interface

    <PAR-SL101A-E> 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* CANCEL button...

  • Page 29: Error Information

    9-2. ERROR INFORMATION When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. 1. Check code, error unit, refrigerant address, date and time of occur- Error information rence, model name, and serial number will appear. Error code 2502 The model name and serial number will appear only if the informa-...
  • Page 30 • Checking the error information While no errors are occurring, page 2/2 of the error information can be Maintenance menu viewed by selecting ˝Error information˝ from the Maintenance menu. Error information Filter information Errors cannot be reset from this screen. Cleaning Main menu: RETURN Cursor...

  • Page 31: Service Menu

    9-3. SERVICE MENU Maintenance password is required 1. Select ˝Service˝ from the Main menu, and press the [SELECT] button. Main Main menu *At the main display, the menu button and select ˝Service˝ to make Service the maintenance setting. 2. When the Service menu is selected, a window will appear asking for the pass- Service menu word.

  • Page 32: Test Run Operation

    9-4. TEST RUN 9-4-1. PAR-41MAA 1. Select ˝Service˝ from the Main menu, and press the [SELECT] button. Test run Input maintenance info. Settings Check Others Select ˝Test run˝ with the F1 or F2 button, and press the [SELECT] button. Main menu: RETURN SELECT MENU RETURN...
  • Page 33 9-4-2. PAR-SL101A-E 1. Press the button to stop the air conditioner. • If the weekly timer is enabled ( is on), press the button to disable it ( is off). 2. Press the button for 5 seconds. • comes on and the unit enters the service mode. 3.

  • Page 34: Function Setting

    9-5. FUNCTION SETTING 9-5-1. PAR-41MAA Settings menu 1. Select ˝Service˝ from the Main menu, and press the [SELECT] button. Function setting Lossnay Select ˝Setting˝ from the Service menu, and press the [SELECT] button. Service menu: MENU Cursor Select ˝Function setting˝, and press the [SELECT] button. SELECT MENU RETURN...

  • Page 35: Error History

    9-6. ERROR HISTORY 1. Select ˝Service˝ from the Main menu, and press the [SELECT] button. Test run Input maintenance info. Settings Check Others Main menu: RETURN Select ˝Check˝ with the F1 or F2 button, and press the [SELECT] button. SELECT MENU RETURN HOLD...

  • Page 36: Self-Diagnosis

    9-7. SELF-DIAGNOSIS 9-7-1. PAR-41MAA 1. Select ˝Service˝ from the Main menu, and press the [SELECT] button. Diagnosis Self check Select ˝Check˝ from the Service menu, Remote controller check and press the [SELECT] button. Service menu: MENU Select ˝Diagnosis˝ from the Check menu, Cursor and press the [SELECT] button.
  • Page 37 9-7-2. PAR-SL101A-E [Procedure] 1. Press the button to stop the air conditioner. is on), press the button to disable it ( is off). 2. Press the button for 5 seconds. 3. Press the button to select the refrigerant address (M-NET address) of the indoor 4.

  • Page 38: Remote Controller Check

    9-8. REMOTE CONTROLLER CHECK If operations cannot be completed with the remote controller, diagnose the remote controller with this function. 1. Select ˝Service˝ from the Main menu, Diagnosis and press the [SELECT] button. Self check Remote controller check Select ˝Check˝ from the Service menu, Service menu: MENU and press the [SELECT] button.
  • Page 39 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN ©Copyright 2023 MITSUBISHI ELECTRIC CORPORATION Specifications are subject to change without notice. Published: Nov. 2023 No. OCH845 Made in Japan...

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