High
0E81 on Alpha Pro Tec 24

Your boiler's temperature sensors are giving conflicting readings, causing the system to stop operating safely to prevent potential overheating.

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 sensor anomaly detected. The sensor shows an incorrect temperature value.

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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