High
Section B on Baxi 105e

Your boiler is failing to start because it is not receiving the electrical signal required to activate the water pump.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

No 230V at Pump or PCB - A4 connector terminals 3 & 6

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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