High
26 on Johnson Starley C26d

Your boiler is struggling to keep its burner lit and has shut down for safety after failing to detect a steady flame several times.

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

Flame lost signal lost 5 times in 4 minutes. Flame sensing error. Failing gas pressures. Fan fault. Flue blockage. Check flame detection lead between sensor and ignition control board. Check the gas supply, does pressure fall when burner fires? Check that flue system is not blocked.

From this model's manual
Verified against the Johnson Starley/Johnson Starley C26d installation & service manual, page 27.
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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All 14 fault codes on the C26d

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

132125303134434445465799E18

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