High
CFL70 on Potterton Kingfisher MF RSL/CFL

Your boiler has stopped working because it is failing to sense that it is burning gas correctly, which means the system has shut itself down to keep your home safe.

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

84

From this model's manual
Verified against the Potterton Kingfisher Mf Rsl Cfl installation & service manual, page 7.
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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