Fujitsu AOU09RL2, ASU12RL2, AOU12RL2 manual Outdoor unit Main PCB Outdoor unit Fan motor

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Trouble shooting 16 OUTDOOR UNIT Error Method:

Outdoor unit fan motor error

Indicate or Display:

Refer to error code table.

Detective Actuators:

Outdoor unit Main PCB Outdoor unit Fan motor

Detective details:

When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts, fan motor stops.

After fan motor restarts, if the same operation within 60sec is repeated 3 times in a row, compressor and fan motor stops.

If and repeats 5 times in a row, compressor and fan motor stops permanently.

Forecast of Cause:

1.	Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure
4.	Outdoor unit fan motor

Check Point 1 : Check rotation of Fan

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or Bearing is abnormal, replace it.

OK

Check Point 2 : Check ambient temp. around motor

Check excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

OK

Check Point 3 : Check Outdoor unit fan motor

Check Outdoor unit fan motor. (PARTS INFORMATION 5)

>>If Outdoor unit fan motor is abnormal, replace Outdoor unit fan motor.

OK

Check Point 4 : Check Output Voltage of Main PCB

Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)

1

2

3 CN800 4 5 6 7

RED

FAN MOTOR

BLACKFM

WHITE

YELLOW

BROWN or BLUE

Read wire	DC voltage

Red - Black	290V (AC115V-10%)~ 360V (AC115+10%)

White - Black	15 1.5V

If the voltage is not correct, replace Main PCB.

02-18

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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 OperationHeating Operation Cool AIR Prevention Control Heating modeMoisture Return Prevention Control Cooling mode& Dry mode 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 ControlHeating operation mode Sleep TimerCooling 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 Condition01-14 Defrost Flow ChartNormal defrost Integrating defrost Defrost end 01-15 OFF Defrost Opeartion ControlVarious Protections Discharge GAS Temperature Overrise Prevension ControlCurrent Release Control 01-16Cooling Pressure Overrise Protection Antifreezing Control Cooling and Dry modeHigh Temperature Release Control Heating Mode Trouble Shooting Error Display TroubleshootingOutdoor unit Main PCB Trouble Shooting with Error CodeCheck Point 4 Check Serial Signal Reverse Transfer Signal 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 3 Check Compressor Outdoor unit Main PCB CompressorCheck Point 2 Check Heat exchanger Check Point 3 Replace Main PCB Check Point 4 Check Output Voltage of Main PCB Outdoor unit Main PCB Outdoor unit Fan motorCheck Point 3 Check Outdoor unit fan motor Check Point 3 Check the solenoid coil and 4-way valve Check Point 2 Check each thermistorForecast of Cause Check Point 3 Check Electrical Components Trouble Shooting with no Error CodeIndoor Unit No Power 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 NoiseReplace Compressor Service Parts InformationCompressor Inverter Compressor Check Point 5 Check Opening and Closing Operation of Valve Outdoor unit Electronic Expansion Valve EEVBlue Red Outdoor unit fan motor Indoor unit fan motorPage Appending Data Setting the Filter Sign Function SettingCooling Room Temperature Correction Heating Room Temperature CorrectionYes Setting the Auto RestartRemote controller signal code 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