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F04 Compressor Discharge Temperature Sensor (TD) Trouble
Error Detection Method
Error Diagnosis
It is judged an error based on the criteria listed below.
Open circuit or Short circuit
•
1.
2.
Sensor connector is connected to PC board properly.
1-1
Sensor is correctly installed at holder side.
1-2
1-2
Reconnect and check
Replace sensor
Correct and see what
happens.
1-3
Yes
No
1 Sensor
2 PC board
3 Operating
status
Yes
No
Resistance between connector pins on PC board is less than
1 k ohm
2-1
Replace PC board
2-2
Yes
No
Peripheral temperature of outdoor unit is over 46°C.
3-1
Check noise.
3-3
Correct
3-2
Yes
No
Tends to have insufficient refrigerant charge in the system.
3-2
Adjust the amount
of refrigerant
3-3
Yes
No
Abnormal temperature exists even after replacing PC board.
2-2
3-1
See what happens.
Yes
No
Abnormal temperature exists even after replacing sensor.
1-3
2-1
See what happens.
Yes
No
SM830231-02̲Single̲欧州.indb 29
SM830231-02̲Single̲欧州.indb 29
2014/09/11 15:44:10
2014/09/11 15:44:10