E12
Grundig
High Temperature Alarm / Over-Temperature Protection
Display shows E12 and the unit emits a continuous or intermittent alarm, often related to high temperature.
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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
Prolonged door open, Blocked ventilation at rear or sides, Failed evaporator fan, Low refrigerant charge or sealed system leak
How to Fix / Troubleshooting
Safety: Ensure the appliance is on a dedicated circuit and away from heat sources. Unplug before internal inspection.
- Check door and gasket: Make sure the door closes fully and the gasket seals all around. Adjust hinges if needed.
- Verify ventilation: Confirm that the rear and sides have the clearance specified in the Grundig manual and that vents are not blocked.
- Inspect internal fan: Confirm the evaporator fan runs when the compressor is on. If not, see fan motor diagnostics (E5).
- Monitor temperature: Place an accurate thermometer inside and allow 12–24 hours. If temperature remains high despite compressor and fan operation, there may be a sealed system issue.
- Clean condenser: Remove dust from the condenser coil to improve heat rejection.
- Call a technician for sealed system issues: If cooling remains poor after these steps, a professional must check refrigerant charge and system integrity.
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Repair Difficulty
Hard
4/5
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