High
32 on Saunier Duval Ecosy 24E

Your boiler has identified a faulty sensor that monitors the temperature of the water returning to the system, causing the unit to stop heating as a safety precaution.

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

The heating return thermistor is short circuited.

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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