High
019 on Ideal Maximiser SE

Your boiler is shutting down because it has detected that the water returning from your radiators is hotter than it expects, suggesting the system is struggling to circulate water properly.

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

Return temperature T2 too high

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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