High
Pilot being extinguished on Potterton Puma 100e

Your boiler's small starter flame has gone out, which has caused the system to shut down for safety because it can no longer safely ignite the main burner.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

On the 80 model (with permanent pilot), this indicates loss of gas supply, flame failure, or over-heating of the central heating water.

From this model's manual
Verified against the Potterton Puma 100e installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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