ACV
Ignition Sequence Incomplete
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 spark from ignition electrode, Incorrect electrode gap, Low gas pressure, Faulty gas valve coil
How to Fix / Troubleshooting
Safety first: If you smell gas, turn off the gas supply, ventilate the area, and call a gas-safe technician immediately.
- Observe ignition attempt: Through the inspection window (if present), see if a spark is visible when the fan runs. No spark suggests an ignition issue.
- Check gas supply: Confirm other gas appliances work. If not, contact your gas supplier.
- Reset once: Reset the boiler and see if it lights. Do not keep resetting if it fails repeatedly.
- Professional service: A technician should test the ignition electrode, leads, and gas valve, and verify gas pressure at the ACV boiler.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Ignition Electrode Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements