Freezer High Severity
E1 Appliance Error Code

Maytag Freezer E1 Error: Temperature sensor fault

What Does Maytag Freezer Error Code E1 Mean? E1 on Maytag MZF upright freezers means the freezer temperature thermistor — the resistance-type sensor that reports cabinet temperature to the main control — is reading out of range or open. Without accurate temperature reading, the control cannot regulate compressor runtime and the cabinet may over-cool or […]

Quick Assessment

Answer to continue safely

Is it safe to keep using?

Maybe. Freezer may over-cool without proper regulation. Monitor temperature and food condition; service soon.

Can I reset the code?

Yes. Power cycle clears display. If thermistor is faulty, E1 returns.

When to stop immediately?

Stop if you notice: E1 persists after power cycle and defrost, Food shows signs of over-cooling (freezer burn).

Symptoms You May Notice

Compressor runs continuously

With no accurate temperature reading, control runs compressor constantly.

Cabinet over-cools (too cold)

Temperatures below -20°F possible as control cannot regulate.

Display shows E1 alternating with temperature

Temperature reading may be absent or show wildly incorrect value.

Food partially thawed

Items near the top show signs of softening or partial thaw despite the compressor running.

Possible Causes

1

Failed freezer thermistor

Resistance-type temperature sensor has failed open.

Requires Professional
2

Disconnected thermistor harness

Cable from thermistor to main control has come loose.

Requires Professional
3

Ice buildup around thermistor

Frost insulates the sensor, causing it to read incorrectly.

Requires Professional

Safe Checks You Can Do

These checks are safe for homeowners. No disassembly required. Do not remove panels or access internal components.
  1. 1

    Power cycle at the wall

    Unplug Maytag MZF for 10 full minutes. Plug back in and wait for display.

    Transient E1 faults sometimes clear on cold boot.

  2. 2

    Defrost attempt

    If E1 persists, defrost the freezer completely. Ice around the thermistor is a common cause.

    Post-defrost recovery should show E1 clear if ice was the cause.

When to Call a Professional

Contact a qualified technician if:

  • Thermistor reads infinite ohms on multimeter
  • Harness shows visible damage
  • E1 recurs within days after reset

Need Professional Help?

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HI E2 DF SY EF OP PO