High
b22 on Remeha Quinta 85

Your boiler has detected that the water temperature sensors are reading back-to-front, which usually means there is a wiring issue or the water is flowing in the wrong direction.

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

Flow and return sensors reversed

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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E14View →

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