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5-4
Troubleshooting
Compressor and evapora-
tor fan motor does not run.
Compressor does not run,
but the evaporator fan
motor does.
Evaporator fan motor does
not run,but the compressor
operates.
Electronic control display
does not illuminate, but the
freezer operates.
The electronic control does
not respond when the
upper or down arrows are
pushed.
Interior light does not glow
when door is opened.
Compressor runs
continuously, but freezer is
not cold.
Compressor runs
continuously and the
freezer is too cold.
Freezer temperatures do
not correspond with
temperature control
settings, but compressor
operation is normal.
1. Do any of the LED’s on the control
illuminate?
2. Is the selector (rocker) switch on the
evaporator panel set to the middle
position.
3. Is the temperature control set to off?
4. Measure the input voltage to the
electronic control. Is line to neutral
voltage being applied?
5. Disconnect the wiring harness from the
compressor controller and measure the
voltage drop between the two wires in
the harness. Does the meter read line
to neutral voltage?
1. Defective compressor or compressor
controller.
1. Is there something blocking the fan
blade?
1. Defective electronic control.
1. Is the control set to zero?
1. Check the light bulb with an ohmmeter.
Is the bulb good?
1. Connect a low side gauge to the
processing tube on the compressor.
Is the pressure in a vacuum or lower
than normal?
1. Defective electronic control.
1. Defective electronic control.
Yes. Go to step 2.
No. Check power to freezer and make sure unit is
plugged in. Check rocker switch.
Yes. Select refrigerator or freezer on switch. The
middle position disables cooling.
No. Go to step 3
Yes. Set control from 1 to 7
No. Go to step 4.
Yes. Replace defective electronic control.
No. Defective wire harness.
Yes. Replace defective compressor controller or
compressor and evaporator fan motor.
No. Replace defective electronic control.
Replace compressor controller. If problem is not
corrected replace compressor.
Yes. Remove restriction from fan blade.
No. Replace defective fan motor.
Replace defective electronic control.
Yes. The down arrow must be pushed (3) times to
advance the control from “0” to “1”.
No. Replace defective electronic control.
Yes. Replace defective door switch.
No. Replace light bulb.
Yes. System low on refrigerant, check for leak in
system before adding refrigerant.
No. Replace defective compressor.
Replace defective electronic control.
Replace defective electronic control.
Problem
Correction
Cause
The following table relates to troubleshooting the electronic control and associated components.