F15
Bauknecht
Triac / Solid-State Relay Fault for Heating Circuits
Oven displays F15, the fan runs but there is no heat in any mode, or the oven shuts down shortly after starting.
Advertisements
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.
Advertisements
Possible Causes
Shorted or open triac on the control board, Overheated solid-state relay, PCB track damage around power devices, Incorrect mains supply causing overcurrent
How to Fix / Troubleshooting
Safety first: Isolate the oven from the mains supply. Power components on the board can be hazardous.
- Visual inspection: Access the main control board and inspect the triacs or solid-state relays controlling the heating elements. Look for cracks, burn marks, or discolored PCB areas around them.
- Check for obvious shorts: If a triac has exploded or the board is charred, the entire control board must be replaced.
- Functional test (advanced): With the oven reassembled and under controlled conditions, a technician can measure whether voltage is being switched correctly to the elements. This is not recommended for untrained users.
- Replacement: Replace the main control board if F15 persists and no external wiring or element faults are found.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Main Electronic Control Board (Power Triac Section)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements