E18
Blomberg
Low Voltage / Power Supply Instability
Oven display shows E18; clock resets randomly or display flickers, sometimes accompanied by beeps.
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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
Loose mains connection at terminal block, failing internal power supply on PCB, intermittent neutral connection, household voltage fluctuations
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before accessing the rear terminal block or control board.
- Check mains supply: Have an electrician verify that the supply voltage is stable and within the specified range for your Blomberg oven.
- Inspect terminal block: Remove the rear cover and inspect the mains terminal block for loose screws, discoloration, or melted plastic. Tighten connections and replace the block if damaged.
- Inspect PCB power section: Remove the control panel and examine the low-voltage power supply section of the main PCB for swollen capacitors or burn marks.
- Replace PCB if needed: If the internal power supply is unstable, replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (Oven PCB)
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