Err
Ambiano
General Control Error / Invalid Input
Display shows Err or ERROR when trying to start or program cooking.
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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
Invalid keypad sequence, Stuck or shorted keypad button, Control board logic fault, Power surge corruption
How to Fix / Troubleshooting
Safety first: Unplug the microwave before opening any panels.
- Clear programming: Press STOP/CANCEL to clear any current program. Re-enter a simple cook time (e.g., 30 seconds) and press START.
- Power cycle: Unplug the unit for 5–10 minutes, then plug back in to reset the control.
- Check keypad: If Err appears when a specific button is pressed, that key may be faulty. Gently press around the key to see if it feels different (stuck or mushy).
- Inspect ribbon cable: Remove the control panel and reseat the keypad ribbon cable on the control board.
- Replace keypad or control board: If Err persists regardless of input, replace the control panel/keypad assembly first. If that does not resolve it, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel / Keypad Assembly
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