Some Cooling
Marginal Temperatures
Frost Not Present
Check out the evaporator fan motor and fan/light switch.
Is the fan motor running when the door switches are
depressed? Evaporator fan motors are wired into the circuit in many
different ways. They are designed to:
- Run anytime the cold control is unsatisfied;
- Run only when the doors are closed and the cold control is unsatisfied;
- Run only when the defrost limit is closed and the cold
control is unsatisfied. This situation is found infrequently (Amana
for instance) but it can be confusing.
If by checking the circuit diagram, it is obvious that
the fan should be running, first check for a faulty door switch. To
properly test an evaporator fan motor, without knowing the logic of a
particular refrigerator, it is necessary to empty the freezer and
remove the evaporator cover. Inspect the evaporator, as described in
the next section (frost and snow buildup). if problems are indicated
follow the instructions.
The surest method to test an evaporator fan motor is to
connect a test cord directly to the motor terminals. Be sure to
unplug the refrigerator during this test. If the fan blade is free
and the motor doesn't run, replace it. If the motor runs only on the
test cord and the evaporator passes inspection, there is a problem
with the fan circuit. Most likely a door (or another) switch is
faulty or not depressed. Trace the fan power supply with the circuit
diagram. (See Manual 5:
Electricity and Component by Component in Manual 7: Refrigeration).
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Marginal Temperatures
Some Cooling
Troubleshooting Refrigerators
Diagnostic System
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