What the manual says
Manufacturer manualControl Status: Ignition Pre Checks
From this model's manual
Verified against the Potterton/Potterton Envoy 30 installation & service manual.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 31 fault codes on the Envoy Plus
Seeing a different code? Every code this model can display, in one place.
Blocking ErrorBurner OnC1C2C3Case sensorCase temperatureControl failedDisplay not illuminatedDry fireDry fire sensorFan OverrunFan PurgeFan speedFlame lossFLASHINGFlow sensorGas OnHot Surface IgniterLockoutOverheatPump Overrun - Central HeatingPump Overrun - Storage TankReturn sensorSensorSensor FlowSensor Flow or return sensorShorted signalStand-byWiring fault