BoilerFaultCodesWhat the manual says
Manufacturer manualBoiler does not activate
What causes this fault?
This fault occurs when the boiler's control system cannot confirm that a flame has been successfully established after several attempts. The most common reasons are a worn-out component that senses the flame, a lack of gas reaching the burner, or a build-up of carbon deposits on the ignition parts.
This issue is more frequent during the first cold snap of autumn, as ignition components that have sat idle or were already weakened can fail when suddenly asked to work under higher demand.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Avoid the next call-out bill
A cover plan would handle faults like 35: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.