What does the Keston Ignition Lockout fault code mean?

Your boiler has failed to light after several attempts and has stopped for safety, meaning you currently have no heating or hot water.

How much does it cost to fix Keston error code Ignition Lockout?

Typical repair cost for the Keston Ignition Lockout fault is £100-350 including labour.

Check if other gas appliances, like a hob, are working to confirm gas supply

Manufacturer manual

1 Check other gas appliances - 2 Reset boiler - 3 Contact installer (After 5 attempts the boiler will lock out)

From this model's manual

Verified against the Keston/Keston 30c installation & service manual, page 64.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like Ignition Lockout: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.

One cold radiator is usually a stuck valve pin or trapped air.

On a combi it is usually the diverter valve. On a system boiler, the motorised valve.

Almost always a stuck diverter valve on a combi.