Select a fault code
Annual service interval reached.
Primary circuit overheated and safety thermostat cut out.
Flow temperature sensor has failed or disconnected.
Return temperature sensor fault.
Water pressure has dropped below operating minimum.
Circulation pump not running.
Oil burner failed to ignite. Could be no oil, blocked nozzle, dirty photocell, or ignition electrode fault.
Burner established a flame but it went out unexpectedly.
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