How much does it cost to fix boiler error code 16 Per Sec?

Typical repair cost for the boiler 16 Per Sec fault is £150-300 including labour.

16 Per Sec High

Boiler Fault Code 16 Per Sec

Also written as 16PERSEC — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 16 Per Sec appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is attempting to ignite the gas repeatedly but is failing to establish a stable flame, meaning your heating and hot water will not work. (As reported on Potterton Suprima HE)

Pick your boiler brand for the 16 Per Sec fix

Potterton 16 Per Sec 4 models

Source

Information for the 16 Per Sec 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