GREE U-Match 5 SERIES UNIT SERVICE MANUAL
62
Troubleshooting：
System is blocked ?
Short of refrigerant ? Short of
compressor oil ?
Compressor 3-phase sequence is
correct or not ?
LC Startup failure
Compressor 3-phase wires are loose or
badly connected?
Error still exists ?
Eliminate system failure
Fill refrigerant in . Fill
compressor oil in .
Connect wires according to
the correct sequence .
Reconnect wires or replace
the compressor wires
Replace the drive board .
Replace the compressor .
YES
YES
YES
YES
YES
NO
NO
NO
NO
3.4.24 ―Lp‖ IDU and ODU Unmatched
Error display: ODU mainboard, IDU wired control and IDU receiver light board will display Lp
Error judgment condition and method:/
Possible reason:
■Models of indoor unit and outdoor unit do not match with each other
Troubleshooting：
Turn off the unit and replace with a matched indoor or outdoor unit.
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