ER
EdgeStar
General Control Error / Firmware Fault
Display shows ER or flashes all segments and the unit is unresponsive to button presses.
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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 firmware, Power surge damage, Loose control panel harness, Failed main control board
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the control panel or main board.
Steps:
- Hard reset: Unplug the unit for at least 15 minutes. Plug back in and see if the ER indication clears.
- Inspect wiring: Access the control panel and main board. Reseat all connectors, especially the ribbon cable between the display and main board.
- Check for moisture: Look for signs of condensation or liquid spills around the control panel. Dry thoroughly if present.
- Replace control components: If ER persists, replace the display/control panel board first. If that does not resolve the issue, replace the main control board.
Tip: Use a surge protector to reduce the risk of future control board damage.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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