SERVICE MANUAL
Model: HB21FC45N*
43
Issue 2010-07-05
Rev. Ref1007S019V0
9-5. Instruction of Check Variable Speed Compressor
Instructions for testing the variable speed compressor
Never attempt to jump start or bypass the inverter board to start this compressor.
Failure to follow this instruction could cause permanent damage to the compressor motor
.
Is there power to the
refri
erator?
Check circuit and power
cord for proper voltage
and continuity
NO
NO
Will the compressor
start in test mode?
YES
Compressor
is OK
Are the connectors on the main
control PCB, display PCB Inverter
PCB and the compressor terminals
connected properly?
NO
Are the signal and line voltage
connectors properly connected?
ES
YES
Is the resistance test of the
compressor winding within
specifications?
Change the
compressor
NO
Wiring or main control
PCB is defective
Reconnect
them
NO
Reconnect all terminal
connections
YES
Inverter PCB is defective
NO
2.5-3.5
VDC
YES
Are the voltages going to the
inverter correct?
YES
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