E12
AEG
Convection Fan or Heater Circuit Fault
Microwave displays E12 and combination (microwave + hot air) mode will not start.
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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
Failed convection fan motor, Open-circuit convection heater, Faulty overheat thermostat, Wiring fault in convection circuit
How to Fix / Troubleshooting
Safety warning: Allow the oven to cool fully and disconnect power before servicing.
- Step 1 – Check convection operation: Try running a pure convection or hot-air program (if available). Listen for the fan and check for heat. If neither works, suspect the heater or thermostat; if fan is silent, suspect the fan motor.
- Step 2 – Access rear components: Remove the outer cover and, if necessary, the rear panel to access the convection fan and heater assembly.
- Step 3 – Test fan motor: Spin the fan by hand; it should move freely. Measure motor resistance; an open circuit indicates failure.
- Step 4 – Test heater and thermostat: Check continuity of the convection heating element and any inline thermostats or thermal fuses. Replace any open components.
- Step 5 – Wiring and control: Inspect wiring for heat damage. If all components test good, the control PCB relay for the convection circuit may be faulty and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Convection Fan Motor
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