Vokera water heater shows code 10, no hot water or heating, control panel unresponsive or intermittent
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Isolate the appliance from the mains before removing any covers. Electronic components can retain charge.
Owner checks:
- Confirm that the fuse or circuit breaker supplying the heater has not tripped.
- Check the external fused spur (if fitted) and replace the fuse with the correct rating if blown.
- Try a full power cycle: turn off power for 5 minutes, then restore and see if the code clears.
Engineer checks:
- Inspect the main PCB for signs of burning, bulging capacitors, or water damage.
- Verify all low-voltage and sensor connections are secure and correctly seated.
- Test incoming mains voltage and earth continuity.
- Replace the PCB with the correct Vokera part number and transfer any configuration links or jumpers as specified.
PCB replacement should be carried out by a qualified technician to ensure correct setup and safety checks.
Repair Difficulty
Required Part
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