High
FE95 on Alpha Pro Tec 24

Your boiler is having trouble reading the temperature of the water flowing through your system because of a faulty connection or sensor.

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

External flow sensor out of range or short circuit. External flow sensor measures a temperature outside normal working range.

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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