High
E.02 – .16 on Baxi 80e

Your boiler's computer system has encountered a major internal error or has timed out, meaning it can no longer communicate with its internal components to operate safely.

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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