How much does it cost to fix boiler error code NO CONNECTION TO PRIMARY PCB?

Typical repair cost for the boiler NO CONNECTION TO PRIMARY PCB fault is £150-300 including labour.

NO CONNECTION TO PRIMARY PCB High

Boiler Fault Code NO CONNECTION TO PRIMARY PCB

Also written as NOCONNECTIONTOPRIMARYPCB — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code NO CONNECTION TO PRIMARY PCB appears across 1 boiler brand and 3 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 is failing to communicate with the main control board, which has caused the system to stop operating until the connection is restored. (As reported on Ideal Vogue Combi)

Pick your boiler brand for the NO CONNECTION TO PRIMARY PCB fix

Ideal NO CONNECTION TO PRIMARY PCB 3 models

Source

Information for the NO CONNECTION TO PRIMARY PCB 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