High
Error 28 on Atag Q 25CR

Your boiler's fan is failing to communicate with the control board, meaning the system cannot safely vent exhaust gases and has shut down to prevent potential danger.

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

number of revolutions not reported back from fan

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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