Fujitsu ASU12RL2, AOU12RL2, AOU09RL2 manual Outdoor unit Electronic Expansion Valve EEV, Blue Red

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SERVICE PARTS INFORMATION 3

Outdoor unit Electronic Expansion Valve ( EEV )

Check Point 1 : Check Connections

Check connection of connector (CN40) ( Loose connector or open cable )

			EXPANSION
	1 1	RED	VALVE COIL
	2 2	BLUE	EV
CN40	3 3	YELLOWORANGE	EV
	4 4	WHITE
	5 5	WHITE

Check Point 2 : Check Coil of EEV

Remove connector, check each winding resistance of Coil.

Read wire	Resistance value
White - Red
Yellow - Red	46	4
Yellow - Red	46	4
Orange - Red	at 20°C
Blue - Red

If Resistance value is abnormal, replace EEV.

Check Point 3 : Check Voltage from Main PCB.	DC
Remove Connector and check Voltage (DC12V)	DC
If it does not appear, replace Main PCB.

Check Point 4 : Check Noise at start up

Turn on Power and check operation noise.

If an abnormal noise does not show, replace Main PCB.

Check Point 5 : Check Opening and Closing Operation of Valve

When Valve is closed,

it has a temp. difference between Inlet and Outlet.

If it is open,

it has no temp. difference between Inlet and Outlet.

CLOSE

Example : Hot Gas

Pipe (In)

Hi TEMP.

Pipe (Out)

Normal TEMP.

OPEN Example : Hot Gas

Pipe (In)

Hi TEMP.

Pipe (Out)

Hi TEMP.

Check Point 6 : Check Strainer

Strainer normally does not have temperature difference between inlet and outlet as shown in ,

but if there is a difference as shown in , there is a possibility of inside clogged. In this case, replace Strainer.

Pipe (In)	Pipe (Out)	Pipe (In)	Pipe (Out)
		02-28

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Contents Service Instruction Contents Appending Data Page Wall Mounted type Cooling Operation DRY Operation Heating Operation01-03 Auto Changeover OperationCooling Operation Indoor FAN ControlFan speed FAN OperationCool AIR Prevention Control Heating mode Moisture Return Prevention Control Cooling mode& Dry modeHeating Operation Outdoor Fan Motor Outdoor FAN ControlFunction Range Adjust the RIGHT-LEFT LouversLouver Control Vertical Louver ControlOpeartion Frequency Control AT Normal Start UP Limitation of Compressor Frequency by Outdoor TemperatureCompressor Control Opeartion Frequency RangeProgram Timer Timer Opeartion ControlSleep Timer Cooling operation modeHeating operation mode 24C 75F Prevent to Restart for 3 Minutes 3 Minutes STFOUR-WAY Valve Extension Select Auto RestartEconomy Operation Powerful OperationForced Cooling Operation Test Operation Compressor PreheatingRelease Condition Defrost Operation ControlCondition of Starting the Defrost Operation Condition of the Defrost Operation CompletionDefrost Flow Chart Normal defrost Integrating defrost01-14 Defrost end 01-15 OFF Defrost Opeartion Control01-16 Discharge GAS Temperature Overrise Prevension ControlVarious Protections Current Release ControlAntifreezing Control Cooling and Dry mode High Temperature Release Control Heating ModeCooling Pressure Overrise Protection Trouble Shooting Error Display TroubleshootingTrouble Shooting with Error Code Check Point 4 Check Serial Signal Reverse Transfer SignalOutdoor unit Main PCB Indoor unit Controller PCB Indoor unit Fan motor Check Point 3 Replace Controller PCB Indoor unit Controller PCBCheck Point Check Indoor unit electric components Check Point Check external cause such as noiseCheck 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 Outdoor unit Main PCB Compressor Check Point 2 Check Heat exchangerCheck Point 3 Check Compressor Check Point 3 Replace Main PCB Outdoor unit Main PCB Outdoor unit Fan motor Check Point 3 Check 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 Trouble Shooting with no Error Code Indoor Unit No PowerCheck Point 3 Check Electrical Components Outdoor Unit No Power 02-23 Check Point 3 Check Site condition Check Point Check Indoor/ Outdoor installation conditionNo Cooling / No Heating Check Point 2 Check Outdoor unit operationWater Leaking Abnormal NoiseService Parts Information CompressorReplace Compressor Inverter Compressor Outdoor unit Electronic Expansion Valve EEV Blue RedCheck Point 5 Check Opening and Closing Operation of Valve Outdoor unit fan motor Indoor unit fan motorPage Appending Data Heating Room Temperature Correction Function SettingSetting the Filter Sign Cooling Room Temperature CorrectionSetting the Auto Restart Remote controller signal codeYes 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