JennAir
Temperature Control Instability
Freezer interior temperature fluctuates widely, causing partial thawing and refreezing.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty thermistor, Control board relay sticking, Evaporator fan intermittent, Overloading blocking air vents
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing sensors or fans.
- Step 1 – Check loading: Ensure air vents are not blocked by food packages. Leave space for air circulation.
- Step 2 – Monitor fan operation: Listen for the evaporator fan cycling normally. If it stops intermittently or squeals, replace the fan motor.
- Step 3 – Replace thermistor: If temperature swings are large and random, the thermistor may be misreading. Replace with a JennAir-compatible sensor.
- Step 4 – If unresolved: The main control board may have failing relays and should be evaluated by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Freezer Thermistor
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