Mitsubishi Electronics MUY-GE12NA MUZ-GE09/12/15NA MUY-GE09/12/15NA, Check of outdoor fan motor

Page 32

I Check of outdoor fan motor

MUZ-GE09/12/15NA MUY-GE09/12/15NA

Disconnect CN932 from the inverter P.C. board, and measure the resistance of the outdoor fan motor.

Is the resistance of outdoor fan motor normal?
Is the resistance of outdoor fan motor normal?			Replace the outdoor fan motor.
(Refer to 10-4.)		No	Replace the outdoor fan motor.
(Refer to 10-4.)		No
	Yes
	Yes

Replace the inverter P.C. board.

MUZ-GE18NA MUY-GE18NA

Check the connection between the connector CN931 and CN932.

Is the resistance between each ter-

minal of outdoor fan motor normal? Yes (Refer to 10-4.)

(Fixed to either 5 or 0 VDC) No

Replace the outdoor fan motor.

Disconnect CN932 from the inverter P.C. board, and turn on the power supply.

Rotate the outdoor fan motor manually and measure the voltage of CN931.

Between 1(+) and 5(-)

Between 2(+) and 5(-)

Between 3(+) and 5(-)

Does the voltage between each terminal become 5 and 0 VDC repeatedly?

Yes

Does the outdoor fan motor rotate smoothly?

Yes

Replace the inverter P.C. board.

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Contents Outdoor Unit Technical Changes Part Names and Functions Specification MUZ-GE09NA MUY-GE09NA MUZ-GE12NA MUY-GE12NAMUZ-GE15NA MUY-GE15NA MUZ-GE18NA MUY-GE18NA Refrigerant charge R410A Lb ozOperating Range ARISeer HspfOutlines and Dimensions Unit inchWiring Diagram MUZ-GE15NA MUY-GE15NA MUZ-GE18NA MUY-GE18NA Refrigerant System Diagram LEVØ3/8 GE12NA Ø1/2 GE15NAMUZ MUZ-GE09/12/15NA MUY-GE09/12/15NA GE15Data Performance DataMUZ-GE12NAMUZ-GE15NA MUY-GE12NAMUY-GE15NA Performance Curve CoolingMUZ-GE09NA MUY-GE09NA MUZ-GE18NA MUY-GE18NA Heating MUZMUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NAMUZ-GE15NA MUY-GE15NA Condensing Pressure CoolingMUZ-GE12NA MUY-GE12NA MUZ-GE09NA MUZ-GE15NA Standard Operation Data MSZ-GE09NA MSZ-GE12NA MSY-GE09NA MSY-GE12NASHF MSZ-GE09NA, MSY-GE09NA MSZ-GE12NA, MSY-GE12NAMSZ-GE15NA MSZ-GE18NA MSY-GE15NA MSY-GE18NA MSZ-GE15NA, MSY-GE15NA MSZ-GE18NA, MSY-GE18NAMUZ-GE15NA MUZ-GE18NA MUZ-GE15NA MUZ-GE18NA MUY-GE15NA MUY-GE18NAHOW to Operate FIXED-FREQUENCY Operation Test run operation Correction of Cooling capacityActuator Control Outdoor FAN Motor ControlR.V. Coil Control MUZ Relation Between Main Sensor and ActuatorService Functions TroubleshootingChange in Defrost Setting MUZ PRE-HEAT Control SettingFailure Mode Recall Function Operational procedure Outdoor unit failure mode table LEDTroubleshooting Check Table GE09/12 GE15 GE18 Trouble Criterion of Main PartsGE09 GE12 GE15/18 How to check inverter/compressor Check of open phaseTroubleshooting Flow Check of compressorCheck of compressor winding Check of compressor operation timeCheck of compressor start failure BLK WHT BLK RED WHT REDUnit operates Cool mode even if it is set to Heat mode Unit operates Heat mode even if it is set to Cool modeCheck of outdoor thermistors Check of R.V. coil MUZMUZ-GE09/12/15NA MUY-GE09/12/15NA Check of outdoor fan motorCheck of power supply Check of LEV Expansion valve Check of inverter P.C. board Emergency OperationHow to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios LED LEV Test Point Diagram and VoltageInverter P.C. board LED Disassembly Instructions Removing the cabinet PhotoRemoving the inverter assembly, inverter P.C. board Photo Photo 4 Inverter assemblyPhoto Removing the discharge temperature thermistor Removing R.V. coil MUZRemoving outdoor fan motor Photo Removing the compressor and 4-way valveMUZ-GE18NA MUY-GE18NA Operating Procedure Photos Removing R.V. coil Photo5Removing outdoor fan motor Page Page Made in Japan New publication, effective JulDistributed in Jul . No. OBH 549

MUZ-GE09NA, MUZ-GE15NA, MUY-GE15NA, MUZ-GE18NA, MUZ-GE12NA specifications

Mitsubishi Electronics offers a range of advanced air conditioning systems, including the MUY-GE12NA, MUY-GE18NA, MUY-GE09NA, MUZ-GE12NA, and MUZ-GE18NA models. These units are designed for optimal energy efficiency and superior comfort, making them ideal for residential and commercial applications.

One of the standout features of these models is their inverter technology. By adjusting the compressor speed according to the cooling or heating demand, inverter systems provide precise temperature control while significantly reducing energy consumption compared to traditional units. This not only translates to lower utility bills but also less environmental impact.

The MUY-GE series units come with a user-friendly remote control that allows for easy adjustments of temperature settings, fan speeds, and operational modes. Smart operation modes include cooling, heating, and dehumidification, thereby catering to various climate needs. The units also include a programmable timer, enabling users to set the air conditioner to operate at specific times, enhancing convenience and efficiency.

Another impressive characteristic is the advanced air filtration system. Mitsubishi integrates a multi-stage filtration mechanism that includes a washable pre-filter, a pleated filter, and a high-performance deodorizing filter. This ensures cleaner indoor air by effectively reducing allergens, dust, and odors, contributing to a healthier living space.

The sleek and modern design of these units also allows for easy installation and compatibility with various interior settings. The MUY-GE09NA, MUY-GE12NA, and MUY-GE18NA indoor units are designed to be compact and unobtrusive, while the outdoor units (MUZ series) are engineered for durability and quiet operation.

Noise levels are another critical aspect where Mitsubishi excels. These air conditioning systems operate quietly, making them suitable for bedrooms, offices, and other noise-sensitive environments. Their Whisper-Quiet technology ensures that sound levels during operation remain low, promoting a peaceful atmosphere.

Mitsubishi Electronics ensures customer satisfaction with robust support and warranty options, emphasizing quality and reliability. In summary, the MUY-GE12NA, MUY-GE18NA, MUY-GE09NA, MUZ-GE12NA, and MUZ-GE18NA models stand out for their energy-efficient inverter technology, user-friendly controls, advanced air filtration, sleek design, and quiet operation, making them a smart choice for modern cooling and heating needs.