Tr
oubleshooting
Page 99
5.12 P4(Inverter compressor drive error diagnosis and solution)
Description:
An abnormal inverter compressor drive is detected by a special detection circuit, including communication
signal detection, voltage detection, compressor rotation speed signal detection and so on.
Recommended parts to prepare:
• Wiring mistake
• IPM malfunction
• Faulty outdoor fan assembly
• Compressor malfunction
• Faulty outdoor PCB
Troubleshooting and repair:
Check the wiring between the
PCB and compressor.
Is it improperly wired?
Ensure proper connections or replace
the wires and connectors.
YES
Check the IPM.
NO
Is it functioning
properly?
Replace the IPM board or
replace the outdoor PCB.
NO
Check the outdoor fan and
the outdoor unit ventilation.
YES
Is it functioning
properly?
Please refer to “Fan
Speed Malfunction”
NO
Check the compressor
resistance values.
YES
Are they within
acceptable parameters?
Replace the compressor.
NO
Replace the outdoor PCB.
YES
Summary of Contents for MISSION2 3D INVERTER Series
Page 2: ......
Page 4: ......
Page 11: ...Specifications Page 7 MOB01 09HFN1 MW0W MOB01 12HFN1 MV0W MOCA01 18HFN1 MT0W...
Page 12: ...Specifications Page 8 MOD01 23HFN1 MT0W...
Page 15: ...Specifications Page 11 PCB board of MOD01 23HFN1 MT0W...
Page 16: ...Specifications Page 12 IPM board of MOD01 23HFN1 MT0W...