High
Pulse Red (6 flashes) on Potterton Envoy

Your boiler is failing to detect the internal airflow needed to ignite safely, so it has shut itself down to prevent a hazard.

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

Continuous - Air Pressure Switch Fault

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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