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Diagnostics
Compressor Not Running
Unplug refrigerator. Warm
freezer thermistor to 70 ˚F.
Connect power and set
temperature controls to
maximum settings.
Does compressor start?
Check compressor
lead wires and
connections.
Wires and
connections OK?
Repair lead wire or
connection.
NO
Adjust settings and
allow 24 hours to
stabilize.
YES
Note: A signal voltage from the
main board to the inverter of less
than 1.5 VDC or greater than 3.5
VDC indicates a bad main board.
Verify signal voltage of 1.5 to
3.5 VDC at the main control
board connector J3-10 to J4-3.
Is voltage OK?
Check compressor for
proper resistance.
9
to 11
should be
measured between all
pins.
Resistance OK?
Replace compressor.
Note: When ordering a replacement
compressor, order the compressor and
inverter. Replace the compressor first.
If the compressor does not start
replace the inverter.
NO
Check for 120 VAC
(L1) at inverter.
Voltage present?
YES
Repair inverter
wiring.
NO
Replace inverter.
Check condenser
fan for operation.
Fan operating?
NO
Replace main
control board.
NO
NO
Go to Condenser
Fan Not Running
flowchart.
YES
YES
YES
YES
Verify freezer
thermisor is within
proper range using
thermistor values
chart. Is thermsitor
within proper range
YES
Check wiring
connections. If
wiring is OK, replace
thermsitor.
NO
Disconnect the main control
board signal wire at the inverter
and verify signal voltage.
Note: Voltage should be
higher at the inverter than at
the main board.
Voltage OK?
Replace wiring
harness from main
control board to
inverter.
YES
NO
Содержание PSH23SGNAFBS Series
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