Jenn-Air Ice Maker E1 Error: Thermistor Failure
What Does Jenn-Air Ice Maker Error Code E1 Mean? Error code E1 on a Jenn-Air ice maker indicates the main temperature sensor has failed. This thermistor tells the control board when the ice mold has reached the correct temperature, signaling when to harvest ice and when to begin a new freeze cycle. Common Causes Thermistors […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. The ice maker may still produce ice, but quality and efficiency will be reduced. The ice itself is safe to consume.
Can I reset the code?
Yes. A power cycle may temporarily restore sensor function. Permanent failures will recur.
When to stop immediately?
Stop if you notice: No ice is produced at all, Unit overcools and freezes water lines.
Symptoms You May Notice
Ice cubes are inconsistent in size
Cubes vary widely in size from cycle to cycle because timing is not temperature-based.
Unit runs longer cycles than normal
Without temperature feedback, cycles default to maximum time, reducing efficiency.
Ice is cloudy or has air bubbles
Improper cycle timing from sensor failure affects ice clarity and quality.
Possible Causes
Failed thermistor
The NTC thermistor has drifted out of calibration or has an open/short circuit.
Requires ProfessionalSensor wiring issue
The wire connecting the sensor to the control board has a break or poor connection.
Requires ProfessionalSafe Checks You Can Do
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1
Power cycle the unit
Unplug for 5 minutes and restart. Check if ice quality improves.
A temporary sensor glitch may clear with a reset.
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2
Monitor ice quality
Run a few ice-making cycles and check cube size and clarity.
Consistent full-size clear cubes indicate the sensor is working. Variable sizes indicate sensor issues.
When to Call a Professional
Contact a qualified technician if:
- Sensor resistance is out of specification
- Sensor connector is corroded
- Wiring shows breaks
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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