Er
Maytag
General Control Error / Invalid Parameter
Display shows Er or “Err” and the unit may not accept new settings.
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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
Corrupted control memory, Power surge event, Incompatible replacement control board, Faulty keypad input
How to Fix / Troubleshooting
Safety: Unplug the unit before handling the control board.
- 1. Power cycle: Unplug the cooler for at least 10 minutes to reset the control. Plug back in and check if the error clears.
- 2. Restore factory settings: If your model supports it, perform a factory reset (often by holding specific buttons for several seconds; refer to the user guide).
- 3. Inspect control board: Check for signs of surge damage or burnt components. If a non-OEM board was recently installed, verify part compatibility.
- 4. Replace main control board: If Er persists and wiring/keypad are good, replace the main control board with the correct Maytag part number.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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