Discharge Temperature Error - Fujitsu ASU 9RLF Service Instructions Manual

Trouble shooting 19
OUTDOOR UNIT Error Method:
INDOOR UNIT

Discharge temperature error

Detective Actuators:
Outdoor unit Main PCB
Discharge pipe temperature thermistor
Forecast of Cause :
1. Valve is close 2. EEV failure
5. Outdoor Fan Operation failure 6. Outdoor Heat Exchanger clogged
< Cooling mode >
Check Point 1 : Check if Gas Valve is open
If it is not open, open it and check the operation.
OK
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
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.
OK
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 11),
If defective, replace the thermistor
OK
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.
Indicate or Display:
Outdoor Unit : Continuously lighting
Indoor Unit : Operation lamp: 10 times Flash, Timer lamp: 1 time Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : A1]
Detective details:
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.
3. Gas Leak, less 4. Discharge Thermistor failure
MPa MPa
02-23
< Heating mode >
Check Point 1 : Check if LIquid Valve is open
If it is not open, open it and check the operation.
OK
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