Fujitsu Inverter Halcyon AOU12RL, Service Instruction

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Trouble shooting 8
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
Discharge temperature error
Outdoor Unit Main PCB Circuit
Discharge Pipe Temperature Thermistor
06-12
Outdoor Unit : LED continuously lighting
Indoor Unit : Operation LED : 7 times, Timer LED : 2 times
ERROR CODE : [E : 0F]
When the discharge temperature becomes higher than 230 °F(110° C),
the compressor stops.
After the compressor restarts, if the same operation is repeated,
the compressor stops permanently.
Check Point 1 :
Check if Gas Valve is open
If it is not open, open it and check the operation.
Check Point 3 : Check if gas leak or less gas
Measure Gas pressure, if there is a leak, correct it.
>>If recharging refrigerant, make sure to perform
vacuuming and
recharge the specified amount.
Check Point 5 : Check Outdoor FAN, Heat Exchanger
Is there anything obstructing the air distribution circuit?
Is there any clogging of Outdoor Heat Exchanger?
Is the Fan rotating? (Check by hand and if it is locked, replace the motor)
Check Outdoor Fan Motor.
>>If the Fan Motor is defective, replace it.
Check Point 4 : Check Discharge Thermistor
Isn’t it fallen off the holder?
Is there a cable pinched?
>> Check characteristics of thermistor (Refer to Trouble shooting 7),
If defective, replace the thermistor
Check Point 2 : Check EEV and Strainer
Are EEV and Strainer open?
(Refer to PARTS INFORMATION 3)
>>If EEV or Strainer is defective, replace it.
OK OK
OK
OK
OK
OK
MPa MPa
1. Valve is close 2. EEV failure 3. Gas Leak, less 4. Discharge Thermistor failure
5. Outdoor Fan Operation failure 6. Outdoor Heat Exchanger clogged
< Cooling mode > < Heating mode >
Check Point 1 :
Check if LIquid Valve is open
If it is not open, open it and check the operation.
Check Point 2 : Check EEV and Strainer
Are EEV and Strainer open?
(Refer to PARTS INFORMATION 3)
>>If EEV or Strainer is defective, replace it.