Service diagnosis
11
.4.5 IPM protection
Indoor display
F1
Outdoor display:
LED1 flash 2 time
Domestic air conditioner
The motor of the outdoor unit is
damaged and needs replacing.
The PCB of the outdoor unit is
damaged and needs replacing
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Measure the voltage between 3
and 6 of the terminal about 0-5v.
YES
Measure the voltage
between 1 and 3 of the terminal
of fan motor on the PCB about DC310V,
Measure the voltage between 3 and 4 of
the terminal about DC15V. Measure the
voltage between 5 and 3 of the
terminal about 1-6v.
NO
YES
IPM protection is detected by checking the compressor running condition.
The system problem cause IPM over-current protection
The compressor faulty leads to IPM protection
Circuit component of IPM is broken and lead to IPM protection
The system problem cause IPM over-current protection
The compressor faulty leads to IPM protection
Circuit component of IPM is broken and lead to IPM protection
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
41
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 ...