High
F26 on Ferroli Optimax

Your boiler has tried to light itself five times but hasn't detected a flame, so it has shut down for safety.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

No flame after the ignition phase (5 times in 4 min.)

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.

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