Gree U-Match 5 Series - “Lc” Startup Failure

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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3.4.23 “Lc” Startup Failure
Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Lc
Error judgment condition and method:
Check the error code on nixie tube of ODU main controller board. If PJ is displayed, it indicates
inverter compressor startup failure
Possible reason:
■Poor contact of compressor UVW wire;
■Compressor is broken;
■Compressor drive board is broken;
Troubleshooting：