A23
Hoval
Repeated ignition lockout
Furnace shows burner lockout due to too many failed start attempts
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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
Persistent ignition failure, Gas supply interruptions, Faulty flame detection circuit, Incorrect burner setup on Hoval controller
How to Fix / Troubleshooting
Safety: Avoid repeated resets without diagnosis to prevent gas accumulation.
- Check gas supply stability: Confirm that gas pressure is stable and other gas appliances are working correctly.
- Review previous faults: Check the Hoval controller history for preceding error codes (e.g., A01, A02) and address those root causes.
- Single reset: After correcting obvious issues, perform a single reset and observe the full start sequence.
- Call technician: If lockout recurs, a qualified Hoval technician must check combustion settings, gas valve, and control logic.
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Repair Difficulty
Hard
4/5
Required Part
Hoval Burner Control Module
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