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Service diagnosis
11
.4.7 Overheat Protection For Discharge Temperature
Indoor display
F4
Outdoor display:
LED1 flash 8 time
Domestic air conditioner
Method of
malfunction
detection
Malfunction
detection
conditions
The discharge temperature control is checked with the temperature being detected by
the discharge pipe thermistor.
Supposed
causes
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
When the compressor discharge temperature is above 117
Electronic expansion valve defective
Faulty thermistor.
Faulty PCB
Electrify the machine again and turn it on with the remote
controller, then measure the temperature at the discharge
temperature sensor of the compressor on the outdoor unit
The temperature exceeds
110
shortly after the machine
starts up?
YES
1) The refrigerant lack was caused during
installation.
2) Compressor is fault, replace it with a
new one.
NO
Malfunction occur after running for some time even though
the measured temperature is below 110
. Pull out the
discharge sensor and measure the resistance normal or
not according to the resistance-temperature table
44
Summary of Contents for AS12GB3HRA
Page 12: ... Piping diagrams Domestic air conditioner 5ˊPinping diagrams 10 ...
Page 58: ... Circuit diagrams Domestic air conditioner ...
Page 60: ...Removal of procedure 1 Removal of Air Filter 1 Domestic Air Condition ...
Page 63: ...Removal of procedure three two HOOKS 4 Domestic Air Condition ...
Page 65: ...Removal of procedure 4 Removal of Drain pan 6 Domestic Air Condition ...
Page 66: ...Removal of procedure 5 Removal of vertical blades and swing motor 7 Domestic Air Condition ...
Page 67: ...Removal of procedure 6 Removal of Electrical Box 8 Domestic Air Condition ...
Page 68: ...Removal of procedure 7 Removal of Heat Exchanger 9 Domestic Air Condition ...
Page 69: ...Removal of procedure 10 Domestic Air Condition ...
Page 70: ...Removal of procedure 8 Removal of Fan Rotor and Motor 11 Domestic Air Condition ...
Page 71: ...Removal of procedure 12 Domestic Air Condition ...