Hoval
Intermittent Ignition / Control Logic Issue
Boiler fan runs but burner does not ignite, no error code displayed
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
Weak ignition spark, Marginal gas pressure, Loose connection on gas valve or ignition transformer, Early-stage PCB failure
How to Fix / Troubleshooting
Safety: Gas and ignition components must be handled by qualified personnel.
- Observe ignition: Through the inspection window (if fitted), check whether a spark is present during start-up. If no spark, the ignition electrode or transformer may be faulty.
- Check connectors: With power off, reseat the ignition cable, gas valve connector, and relevant PCB plugs.
- Gas supply: Confirm that other gas appliances work correctly. If gas supply is marginal, contact the gas supplier.
- If the issue is intermittent and no code appears, a Hoval technician should test ignition voltage, gas valve operation, and PCB outputs.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Ignition Transformer / Ignition Electrode
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements