High
E.02 – .16 on Baxi EP

Your boiler's main control system has stopped communicating internally or has suffered an electrical failure, meaning it cannot start the heating process.

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

Permanent fault caused by channel service unit (CSU) time-out or printed circuit board (PCB) damage.

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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