E18
Grundig
Multiple Sensor Input Fault or Control Calibration Error
Ice maker displays a sensor calibration or generic sensor error, multiple functions affected
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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 board firmware, Multiple sensor harness damage, Incorrect sensor type fitted, Moisture on control connectors
How to Fix / Troubleshooting
Safety first: Unplug the unit before touching the control board or wiring.
Steps to check:
- Dry electronics: If the unit has been exposed to condensation or a spill, allow the control area to dry completely. Use gentle airflow; do not use high heat.
- Inspect harness: Check the main sensor harness for damage where it passes through cabinet walls. Repair or replace if insulation is cut or wires are broken.
- Reseat connectors: Disconnect and reconnect all sensor plugs on the main board to clean contact surfaces.
- Factory reset: If the user manual provides a factory reset procedure, perform it to clear calibration errors. If not, unplug the unit for 10–15 minutes and restart.
Important: Persistent generic sensor errors usually require control board replacement by a service technician.
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Repair Difficulty
Hard
4/5
Required Part
Grundig Ice Maker Main Control Board
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