How much does it cost to fix boiler error code 352?

Typical repair cost for the boiler 352 fault is £150-300 including labour.

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Boiler Fault Code 352

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 352 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is experiencing a communication failure between the control panel and the main operating system preventing it from firing up correctly. (As reported on Navien NCB 28 HE)

Pick your boiler brand for the 352 fix

Navien 352 6 models

Source

Information for the 352 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 27 April 2026