Mitsubishi Electric CITY MULTI PEFY-P06NMAU-E Technical & Service Manual
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Mitsubishi Electric CITY MULTI PEFY-P06NMAU-E Technical & Service Manual

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See also: Installation Manual
Air-Conditioners
TECHNICAL & SERVICE MANUAL
PEFY-P06NMAU-E, PEFY-P27NMAU-E
Models
PEFY-P08NMAU-E, PEFY-P30NMAU-E
PEFY-P12NMAU-E, PEFY-P36NMAU-E
PEFY-P15NMAU-E, PEFY-P48NMAU-E
PEFY-P18NMAU-E, PEFY-P54NMAU-E
PEFY-P24NMAU-E
2009
For use with R410A, & R22

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Summary of Contents for Mitsubishi Electric CITY MULTI PEFY-P06NMAU-E

  • Page 1 2009 Air-Conditioners TECHNICAL & SERVICE MANUAL PEFY-P06NMAU-E, PEFY-P27NMAU-E Models PEFY-P08NMAU-E, PEFY-P30NMAU-E PEFY-P12NMAU-E, PEFY-P36NMAU-E PEFY-P15NMAU-E, PEFY-P48NMAU-E PEFY-P18NMAU-E, PEFY-P54NMAU-E PEFY-P24NMAU-E For use with R410A, & R22...

  • Page 2: Safety Precautions

    Have all electrical work performed by an authorized electri- Only use accessories (i.e., air cleaners, humidifiers, electric cian according to the local regulations and the instructions heaters) recommended by Mitsubishi Electric. in this manual. Use a dedicated circuit. Insufficient power supply capacity or improper installation of the unit may result in malfunctions of the unit, electric shock, or fire.
  • Page 3 When installing the unit in a small space, take appropriate mended by Mitsubishi Electric may result in smoke, fire, or precautions to prevent leaked refrigerant from reaching the explosion.

  • Page 4: Table Of Contents

    CONTENTS I Features [1] Features............................ 1 II Components and Functions [1] Components and Functions...................... 2 III Specifications [1] Specifications..........................4 1.Specifications.......................... 4 2.Electrical component specifications..................7 IV Outlines and Dimensions [1] Outlines and Dimensions......................8 V Wiring Diagram [1] Wiring Diagram ......................... 9 VI Refrigerant System Diagram [1] Refrigerant system diagram....................
  • Page 5 HWE09040...

  • Page 6: Features

    [ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity BTU/h PEFY-P06NMAU-E 6000/6700 1.8/2.0 PEFY-P08NMAU-E 8000/9000 2.3/2.6 PEFY-P12NMAU-E 12000/13500 3.5/4.0 PEFY-P15NMAU-E 15000/17000 4.4/5.0 PEFY-P18NMAU-E 18000/20000 5.3/5.9 PEFY-P24NMAU-E 24000/27000 7.0/7.9 PEFY-P27NMAU-E 27000/30000 7.9/8.8 PEFY-P30NMAU-E 30000/34000 8.8/10.0 PEFY-P36NMAU-E 36000/40000 10.6/11.7...

  • Page 7: Components And Functions

    [ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit (1) In case of rear inlet (2) In case of bottom inlet Air inlet Air inlet Air outlet Air outlet 2. Remote Controller [PAR-21MAA] Once the operation mode is selected, the unit will remain in the selected mode until changed.
  • Page 8 [ II Components and Functions ] (2) Remote Controller Display Current time/Timer time Louver swing Centralized control indicator Ventilation Timer OFF indicator Filter sign Timer mode indicator Sensor position Operation mode display: COOL, DRY, AUTO, Room temperature FAN, HEAT Function mode indicator Vane setting Preset temperature Fan speed...

  • Page 9: Specifications

    [ III Specifications ] III Specifications [1] Specifications 1. Specifications Model PEFY-P06NMAU-E PEFY-P08NMAU-E PEFY-P12NMAU-E PEFY-P15NMAU-E Power source 1-phase 208/230V 60Hz Cooling capacity BTU / h 6,000 8,000 12,000 15,000 (Nominal) Power input 0.06 0.06 0.09 0.09 Current input 0.56 0.56 0.66...
  • Page 10 [ III Specifications ] Model PEFY-P18NMAU-E PEFY-P24NMAU-E PEFY-P27NMAU-E PEFY-P30NMAU-E Power source 1-phase 208/230V 60Hz Cooling capacity BTU / h 18,000 24,000 27,000 30,000 (Nominal) Power input 0.11 0.12 0.14 0.14 Current input 0.77 1.04 1.18 1.18 Heating capacity BTU / h 20,000 27,000 30,000...
  • Page 11 [ III Specifications ] Model PEFY-P36NMAU-E PEFY-P48NMAU-E PEFY-P54NMAU-E Power source 1-phase 208/230V 60Hz Cooling capacity BTU / h 36,000 48,000 54,000 (Nominal) 10.6 14.1 15.8 Power input 0.24 0.34 0.36 Current input 1.50 2.08 2.24 Heating capacity BTU / h 40,000 54,000 60,000...

  • Page 12: Electrical Component Specifications

    [ III Specifications ] 2. Electrical component specifications Component Sym- PEFY- PEFY- PEFY- P06NMAU-E P08NMAU-E P12NMAU-E Room temperature TH21 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k thermistor Liquid pipe thermistor TH22 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k Gas pipe thermistor TH23 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k...

  • Page 13: Outlines And Dimensions

    [ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PEFY-P06, 08, 12, 15, 18, 24, 27, 30, 36, 48, 54NMAU-E Space required for service and maintenance. Provide an access door for maintenance at the bottom. Note 1 Use M10 suspension bolts.

  • Page 14: Wiring Diagram

    [ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram 1. PEFY-P06, 08, 12, 15, 18, 24, 27, 30, 36, 48, 54NMAU-E HWE09040 - 9 -...
  • Page 15 [ V Wiring Diagram ] Table.1 SYMBOL EXPLANATION SYM- NAME SYM- NAME SYM- NAME I.B. Indoor controller board CN32 Connector (Remote switch) Switch (for capacity code) (I.B.) P.B. Power supply board CN41 Connector (HA terminal-A) Switch (for mode selection) (I.B.) Power source terminal block CN51 Connector (Centrally control)

  • Page 16: Refrigerant System Diagram

    [ VI Refrigerant System Diagram ] VI Refrigerant System Diagram [1] Refrigerant system diagram Gas pipe thermistor TH23 Gas pipe Liquid pipe Brazed connections Strainer (#100 mesh) Linear expansion valve Liquid pipe thermistor TH22 Heat exchanger Room temperature thermistor TH21 Capacity PEFY- PEFY-...

  • Page 17: Microprocessor Control

    [ VII Microprocessor Control ] VII Microprocessor Control [1] Microprocessor Control 1. Cool operation <How to operate> 1. Press POWER [ON/OFF] button. 2. Press the operation [Mode] button to display COOL. 3. Press the [Set Temperature] button to set the desired tempera- ture.

  • Page 18: Dry Operation

    [ VII Microprocessor Control ] In the air : Detected that the float switch is OFF for 15 seconds. Float SW 15sec. 15sec. 15sec. 1min.30sec. 1min.30sec. Drain pump In the water In the air In the water Error abnormal postponement 2.

  • Page 19: Fan Operation

    [ VII Microprocessor Control ] Remote controller setting is not acceptable. 3. Drain pump (1) Same control as COOL operation 3. Fan operation <How to operate> 1. Press POWER [ON/OFF] button. 2. Press the operation [Mode] button to display FAN. TIME SUN MON TUE WED THU FRI SAT TIMER AFTER...

  • Page 20: Heat Operation

    [ VII Microprocessor Control ] 4. Heat operation <How to operate> 1. Press POWER [ON/OFF] button. 2. Press the operation [Mode] button to display HEAT. 3. Press the [Set Temperature] button to set the desired tempera- ture. TIME SUN MON TUE WED THU FRI SAT TIMER AFTER AFTER...

  • Page 21: Auto Operation [Automatic Cool / Heat Change Over Operation]

    [ VII Microprocessor Control ] This control is same for the model without auxiliary heater. (4) Thermo OFF mode When the thermoregulating function changes to OFF, the indoor fan operates in [Extra low]. (5) Heat defrosting mode The indoor fan stops. 3.

  • Page 22: When Unit Is Stopped Control Mode

    [ VII Microprocessor Control ] 4. HEAT mode (1) Same control as heat operation The value "3°F" is modifiable from 1.8°F to 9°F by maintenance tool. 6. When unit is stopped control mode 1. Drain pump (1) Drain pump control The drain pump turns ON for the specified amount of time when any of the following conditions is met: 1) ON for 3 minutes after the operation mode is switched from COOL or DRY to another operation mode (FAN).
  • Page 23 [ VII Microprocessor Control ] Table.3 Heater OFF Heater control #B Heater OFF Inlet air temp. set temp. Inlet air temp. set temp. Heater control #A Heater ON Heater ON Inlet air temp. < set temp.-4°F Inlet air temp. < set temp.-1.8°F Set temp.
  • Page 24 [ VII Microprocessor Control ] (2) On the Fresh air intake type units, the heater cannot be turned on with the fan setting set to OFF. (3) Non-ducted models do not require the settings described in Section (1) above. Reference (not applicable to the ducted models) Pattern NON duct unit (PL/PK/PC) CN4Y or CN22 for FAN control...
  • Page 25 [ VII Microprocessor Control ] 2) PEFY-P-NMAU-E, PEFY-P-NMHU-E, PDFY-P-NMU-E and other models Indoor unit Outdoor unit Remote control board Relay circuit control board control board Adapter • PUHY, PURY-P- CN24 TGMU type Dip switch SW5-2 “ON” • PUHY, PURY-P- White YHMU type Dip CN22 switch SW5-10...

  • Page 26: Troubleshooting

    [ VIII Troubleshooting ] VIII Troubleshooting [1] Troubleshooting 1. Check methods 1. Component and check points (1) Thermistor Room temperature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector and measure the resistance between terminals with a tester. (Ambient temperature 10°C - 30°C[50°F-86°F]) Normal Abnormal...
  • Page 27 [ VIII Troubleshooting ] 1) Summary of linear expansion valve (LEV) operation The LEV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board. The LEV position changes in response to the pulse signal. Indoor control board and LEV connection 12VDC Brown...
  • Page 28 [ VIII Troubleshooting ] 2) LEV operation Close Open Fully open valve (2000 pulses) No. of pulses Extra tightning (80 - 100 pulse) Valve opening degree When the power is turned on, a pulse signal of 2200 pulses is output (valve closure signal), to bring the valve to position A. When the valve is operating normally, it is free of vibration noise.
  • Page 29 [ VIII Troubleshooting ] Symptom Checking Criteria Remedy Valve closure fail- To check the LEV on the indoor unit, check the indoor unit liquid pipe temperature Replace the LEV ure (leaky valve) that appears on the operation monitor on the outdoor unit's multi control board while if the amount of operating the indoor unit in question in the FAN mode and the other indoor units in leakage is great.

  • Page 30: Dc Fan Motor (Fan Motor/Indoor Control Board)

    [ VIII Troubleshooting ] 2. DC fan motor (fan motor/indoor control board) 1. CAUTION A high voltage is applied to the connector for connection to the fan motor (CNMF). Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor. 2.

  • Page 31: Address Switch Setting

    [ VIII Troubleshooting ] 3. Address switch setting Make sure that power to the unit is turned off. Indoor unit control board Factory setting (all models) 1. When using an ME remote controller, set the address with the rotary switches (SW11, SW12). Address setting is not required when the unit remote controller is used.

  • Page 32: Voltage Test Points On The Control Board

    [ VIII Troubleshooting ] 4. Voltage test points on the control board 1. PEFY-P06, 08, 12, 15, 18, 24, 27, 30, 36, 48, 54NMAU-E Fuse(AC 250V 6.3A) Power supply voltage (220 - CN2M 240VAC) CN2M For M-NET transmission cable connection (24 - 30VDC) Emergency operation Capacity setting CN41...

  • Page 33: Dipswitch Setting (Factory Setting)

    [ VIII Troubleshooting ] 5. Dipswitch setting (Factory setting) 1. Function setting (1) SW1 Switch position Function Switch setting Active Thermistor (Intake air Built-in thermistor on the remote Indoor unit thermistor) controller Filter clogging detection Available Unavailable Filter life 2500 hr 100 hr Outdoor air intake Enabled...
  • Page 34 [ VIII Troubleshooting ] 2. Capacity code setting (1) SW2 1) Indoor control board Dipswitch settings must be made while the unit is stopped. Factory setting The switches are set to correspond to the unit capacity. PEFY-P06NMAU-E PEFY-P08NMAU-E PEFY-P12NMAU-E PEFY-P15NMAU-E PEFY-P18NMAU-E PEFY-P24NMAU-E PEFY-P27NMAU-E...
  • Page 35 [ VIII Troubleshooting ] 5. External static pressure (1) SWA, SWC 1) Indoor control board All models Factory 35Pa(0.14in.WG) 50Pa(0.20in.WG) 70Pa(0.28in.WG) 100Pa(0.40in.WG) 150Pa(0.60in.WG) setting SWA SWC Note: Changes that are made to the dipswitches SWA and SWC immediately become effective regardless of the unit's operation status (RUN/STOP) or the remote controller status (ON/OFF).

  • Page 36: Disassembly Procedure

    [ IX Disassembly Procedure ] IX Disassembly Procedure [1] Disassembly Procedure 1. Control box Exercise caution when removing heavy parts. 1. Removing the control box cover (1) Remove the three fixing screws on the cover (A) to re- move it. Fig.1 Fig.2 HWE09040...

  • Page 37: Thermistor (Intake Air)

    [ IX Disassembly Procedure ] 2. Thermistor (Intake air) Exercise caution when removing heavy parts. 1. Remove the control box cover according to the procedure in section [1]. 2. Remove the thermistor. (1) Pull out the thermistor holder (B) and thermistor (C) on the control box.

  • Page 38: Drainpan

    [ IX Disassembly Procedure ] 3. Drainpan Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (D), (E) to remove it.

  • Page 39: Thermistor (Gas Pipe) (Liquid Pipe)

    [ IX Disassembly Procedure ] 4. Thermistor (Gas pipe) (Liquid pipe) Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in sec- tion [1]. 2. Removing the Heat exchanger cover (1) Remove the four fixing screws on the heat exchanger cov- er (F) to remove it.

  • Page 40: Fan And Fan Motor

    [ IX Disassembly Procedure ] 5. Fan and fan motor Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (J) to re- move it.

  • Page 41: Heat Exchanger

    [ IX Disassembly Procedure ] 6. Heat exchanger Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in section [1]. 2. Remove the heat exchanger cover according to the proce- dure in section [4] 2. 3.
  • Page 42 Jun. 2009 HWE009040 New publication, effective Jun. 2009 Specifications subject to change without notice...

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