High
F2 on Ferroli Tempra

Your boiler is lighting the fire, but it cannot detect that the flame is there, so it is shutting down for safety.

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 burner is lit but the control unit does not sense the flame. Check the position of the sensor electrode and its cable.

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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