ER Serious Moderate DIY

Maytag Refrigerator ER — General Error / Sensor Fault

Maytag Refrigerator · Error code ER

What ER Means

Generic error indicator — typically points to a failed thermistor (sensor) input to the control. Compressor and defrost behavior may be erratic.

Symptoms

  • ER on display
  • Freezer too warm or too cold
  • Fresh food not cooling correctly
  • Compressor runs constantly or short-cycles

Common Causes

1
Failed evaporator thermistor

Sensor open or shorted, out of range.

2
Failed fresh food/freezer thermistor

Cabinet sensor failure.

3
Loose sensor connector

Spade or plug came off in service.

4
Failed main control

Sensor input circuit on board has failed.

How to Fix It

  1. Enter service diagnostics (model-specific button combo) to read sensor temps.
  2. Compare displayed sensor values to a thermometer in the cabinet.
  3. Unplug and measure suspect thermistor resistance — should be ~16k ohms at 32°F (10k NTC type per model).
  4. Replace any thermistor reading open, shorted, or far from spec.
  5. If all sensors check good, replace the main control board.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Maytag refrigerator thermistor View on Amazon→

More Maytag Refrigerator Codes

5uL 5uL — Sound Level Setting CF CF — Communication Failure (UI to Main) dE dE — Defrost System Error F1E1 F1E1 — Main Control Board Failure F2E1 F2E1 — Dispenser UI Communication Error F4E1 F4E1 — Ice Maker / Auger Motor Fault

All Maytag codes → All refrigerator codes →

Verified against manufacturer documentation: maytag.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.