GE ZIS 420DM

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Compressor Not Running
Disconnect power.
Warm freezer thermistor to 70 ˚F.
Reconnect power and set controls
to 37 ˚F and 0 ˚F.
Is the compressor running?
Adjust setting and allow
24 hours to stabilize.
Check for 120 VAC at
connector J7-9 orange wire to
terminal J8 white wire.
Do you have 120 VAC?
NO
Direct-test the
compressor.
Did it start?
YES
Replace main
control board.
NO
Check wiring to
compressor, overload,
and relay.
YES
Replace
compressor.
NO
YES