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PROBLEM
Freezer compartment too cold
Refrigerator compartment too
cold
External sweating
Internal sweating
Incomplete defrosting, or high
cabinet temperatures during
defrost
CAUSE
1.Thermostat
a.Set too cold
b.Sensing tube not properly
positioned
c.Out of calibration or not
functioning
2.Air control closed
1.Thermostat
a.Set too cold
b.Sensing tube not properly
positioned
c.Out of calibration or not
functioning
1.Door seal
2.Void in insulation
1.Abnormal Use
2.Door seal
3.Insufficient air circulation
1.Bi-metal
2.Timer
3.Defrost heater
4.Drain clogged
76
PROCEDURE
a.Turn knob to lower number.
b. See that sensing tube is covered by
barrier and properly located.
c. Check thermostat for cut-in and cu-tout
temperatures, recalibrate or replace.
2.Adjust rear panel of air tower.
1.
a.Turn knob to lower setting.
b.See that sensing tube is properly
positioned and pressed into retainer
clips.
c.Check thermostat for cut-in and cut-
out temperatures, recalibrate or
replace.
1.Adjust door for proper door seal.
2.Voids are not likely to occur within
cabinet walls. If in accessible area, fill
with fiberglass.
1.Instruct customer to cover foods and
liquids.
2.Check door seal and adjust door.
Instruct customer to be sure door
closes completely.
3.
a.Make sure return air flow is not
restricted.
b.Increase cold air flow by operating
refrigerator compartment as cold as
possible without freezing food.
1.Check bi-metal defrost control. If bi-
metal opens too soon, defrost will be
incomplete and frost will accumulate.
If bi-metal is stuck closed or opens too
late, high cabinet temperatures will
result. A loose bi-metal may cause the
defrost heater to stay on too long.
Change bi-metal is defective.
2.Check timer for proper operation.
Timer should initiate 21-minute defrost
cycle every 12 hours. Replace timer if
defective.
3.Check defrost heater with ohmmeter.
Replace if open or shorted.
4.Clogged drain may result in ice buildup
in evaporator. Clean drain system.
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