16 High

Boiler Fault Code 16

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 16 appears across 12 boiler brands and 58 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer brain has developed a critical fault and is unable to manage the system safely. (As reported on Remeha Quinta 30)

Pick your boiler brand for the 16 fix

Alpha 16 25 models Atag 16 1 model Biasi 16 4 models Ferroli 16 3 models Glow-worm 16 5 models Halstead 16 8 models Ideal 16 1 model Potterton 16 1 model Remeha 16 2 models Saunier Duval 16 6 models Vokera 16 1 model Worcester Bosch 16 1 model

Source

Information for the 16 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