High
80 on Chaffoteaux Serelia 24 MFFI

Your boiler has detected a communication error between its internal electronic control systems, causing the system to stop operating.

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

FAULT INFORMATION (represented by heating temperature indicator lights 30-80)

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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