F4
OBH Nordica
Clock / Timer Circuit Fault
Oven shows F4 and may not respond to timer or clock settings.
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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 clock module on control board, Corrupted timer settings after power surge, Faulty backup capacitor or battery on PCB, Damaged display/timer IC
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before accessing the control panel.
Steps to attempt fix:
- Reset clock: After a power cycle, attempt to set the clock and timer according to the user manual. Some F4 errors clear after a successful clock set.
- Power cycle: Disconnect power for 10 minutes, then restore and check if F4 returns.
- Inspect control panel: Remove the control panel and inspect the clock/timer section of the PCB for burnt components or swollen capacitors.
- Check connectors: Reseat the ribbon cable between the display board and main PCB, if separate.
- Replace control board or display module: If the clock cannot be set or F4 persists, replace the OBH Nordica-compatible control board or display/timer module as a unit.
Note: Some models integrate the timer into the main PCB; in that case, the entire board must be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Clock/Timer Control Board
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