Emergency
Pulse Red (3 flashes) on Potterton Envoy

Your boiler has detected that it is dangerously overheating and has automatically shut itself down to prevent internal damage.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

Continuous - Dry Fire Sensor Fault/Overheat

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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