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 7 July 2026

Fault code 16 Per Sec. appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to ignite the flame reliably and is flickering on and off, which means it cannot provide heat or hot water consistently. (As reported on Potterton Prima 30B)

Pick your boiler brand for the 16 Per Sec. fix

Potterton 16 Per Sec. 2 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 7 July 2026