BoilerFaultCodesYour boiler has detected an issue while trying to automatically adjust its internal settings for a clean and efficient flame.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Combustion test alarm during auto-setting
What causes this fault?
This fault occurs when the boiler’s internal computer fails to calibrate the correct mix of gas and air needed for a healthy flame. It is usually triggered because the components responsible for creating the spark or monitoring the fire, such as the electrodes or gas valve, are worn out or dirty. When the system cannot find a safe setting to operate efficiently, it shuts down as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E92 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
Affiliate links — we may earn a commission at no extra cost to you.