BoilerFaultCodesWhat the manual says
Manufacturer manualFlame loss after initial detection See chart
From this model's manual
Verified against the Potterton/Potterton Envoy 30 installation & service manual.
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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All 36 fault codes on the Envoy 30
Seeing a different code? Every code this model can display, in one place.
0 (Flashing)8 (Flashing)9 (Flashing)Blocking ErrorBurner OnC1C2C3Case sensorCase temperatureControl failedDisplay not illuminatedDry fireDry fire sensorF (Flashing)Fan OverrunFan PurgeFan speedFLASHINGFlow sensorGas OnHot Surface IgniterIgnition Pre ChecksL (Flashing)LockoutOverheatPump Overrun - Central HeatingPump Overrun - Storage TankReturn sensorSensorSensor FlowSensor Flow or return sensorShorted signalStand-byWiring fault