How much does it cost to fix boiler error code CFL50?

Typical repair cost for the boiler CFL50 fault is £150-300 including labour.

CFL50 High

Boiler Fault Code CFL50

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code CFL50 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is failing to light because it is not sensing the necessary air flow required for safe operation. (As reported on Potterton Kingfisher MF RSL/CFL)

Pick your boiler brand for the CFL50 fix

Potterton CFL50 1 model

Source

Information for the CFL50 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026