Fujitsu AOU12RL2, ASU12RL2, AOU09RL2 manual Service Parts Information, Replace Compressor

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2-4 SERVICE PARTS INFORMATION

SERVICE PARTS INFORMATION 1

Compressor

Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting )

Does not start up	Stops soon after starting up	Abnormal noise

Is there open or loose connection cable?

Check Main PCB, connection of Compressor, and winding resistance. (Refer to the next page).

>>If there is no failure, the defect of Compressor is considered (Locked compressor due to clogged dirt or less oil)

Replace Compressor

Is there open or loose connection cable?

Is Gas pipe valve open? (Low pressure is too low)

MPa MPa

Check if Refrigerant is leaking. (Recharge Refrigerant)

Check if capillary tube, strainer is clogged.

(PARTS INFORMATION 3)

Check if vibration noise by loose bolt or contact noise of piping is happening.

Defective Compressor can be considered.

(due to inside dirt clogging or broken component)

Replace Compressor

Check Main PCB, connection of Compressor,and winding resistance. (Refer to the next page).

>>If there is no failure, the defect of Compressor can be considered. (Compression part broken or valve defective.)

Replace Compressor

02-26

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Contents Service Instruction Contents Appending Data Page Wall Mounted type Cooling Operation DRY Operation Heating Operation01-03 Auto Changeover OperationFan speed Indoor FAN ControlFAN Operation Cooling OperationMoisture Return Prevention Control Cooling mode& Dry mode Cool AIR Prevention Control Heating modeHeating Operation Outdoor Fan Motor Outdoor FAN ControlLouver Control Adjust the RIGHT-LEFT LouversVertical Louver Control Function RangeCompressor Control Limitation of Compressor Frequency by Outdoor TemperatureOpeartion Frequency Range Opeartion Frequency Control AT Normal Start UPProgram Timer Timer Opeartion ControlCooling operation mode Sleep TimerHeating operation mode FOUR-WAY Valve Extension Select Prevent to Restart for 3 Minutes 3 Minutes STAuto Restart 24C 75FForced Cooling Operation Test Operation Powerful OperationCompressor Preheating Economy OperationCondition of Starting the Defrost Operation Defrost Operation ControlCondition of the Defrost Operation Completion Release ConditionNormal defrost Integrating defrost Defrost Flow Chart01-14 Defrost end 01-15 OFF Defrost Opeartion ControlVarious Protections Discharge GAS Temperature Overrise Prevension ControlCurrent Release Control 01-16High Temperature Release Control Heating Mode Antifreezing Control Cooling and Dry modeCooling Pressure Overrise Protection Trouble Shooting Error Display TroubleshootingCheck Point 4 Check Serial Signal Reverse Transfer Signal Trouble Shooting with Error CodeOutdoor unit Main PCB Indoor unit Controller PCB Indoor unit Fan motor Check Point Check Indoor unit electric components Indoor unit Controller PCBCheck Point Check external cause such as noise Check Point 3 Replace Controller PCBCheck Point 2 Replace Controller PCB Indoor unit Controller PCB Indicator PCB Manual auto switchIndoor unit Controller PCB Room temperature thermistor Indoor unit Controller PCB Heat Ex. temperature thermistor Check Point 3 Check Indoor unit fan motor Check Point 2 Check ambient temp. around motorCheck Point 1-2 Check external cause Check Point 2 Replace Main PCBCheck Point 3 Replace Main PCB Check Point 2 Check connection of Connector02-11 CN71 CN70 Outdoor unit Main PCB Discharge pipe temperature thermistorResistance Value k 606 759 213 8531 Outdoor unit Main PCB Heat exchanger temperature thermistorOutdoor unit Main PCB Outdoor temperature thermistor Check Point 4 Replace Main PCB Check Point 2 Check Heat exchanger Outdoor unit Main PCB CompressorCheck Point 3 Check Compressor Check Point 3 Replace Main PCB Check Point 3 Check Outdoor unit fan motor Outdoor unit Main PCB Outdoor unit Fan motorCheck Point 4 Check Output Voltage of Main PCB Check Point 3 Check the solenoid coil and 4-way valve Check Point 2 Check each thermistorForecast of Cause Indoor Unit No Power Trouble Shooting with no Error CodeCheck Point 3 Check Electrical Components Outdoor Unit No Power 02-23 No Cooling / No Heating Check Point Check Indoor/ Outdoor installation conditionCheck Point 2 Check Outdoor unit operation Check Point 3 Check Site conditionWater Leaking Abnormal NoiseCompressor Service Parts InformationReplace Compressor Inverter Compressor Blue Red Outdoor unit Electronic Expansion Valve EEVCheck Point 5 Check Opening and Closing Operation of Valve Outdoor unit fan motor Indoor unit fan motorPage Appending Data Setting the Filter Sign Function SettingCooling Room Temperature Correction Heating Room Temperature CorrectionRemote controller signal code Setting the Auto RestartYes Procedures to change the Function Setting for wireless RC Selecting the Function Number and Setting Value Remote Controller Signal Code Setting Discharge thermistor Room temperature thermistorPage 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan