Observation:

Temporary fault

A temporary fault is indicated by a H followed by a two digit code number (e.g. 02). This code flashes and alternates with a second two digit code (e.g. 06) that indicates the specific fault.
A temporary fault prevents the boiler operating but will automatically reset once the cause of the fault has been resolved.
Click HERE if an H Code is displayed.

Permanent fault

A permanent fault 'Lock out' is indicated by an E followed by a two digit code number (e.g. 04). This code flashes and alternates with a second two digit code (e.g. 07) that indicates the specific fault.
A permanent fault prevents the boiler operating and will not automatically reset. Once the fault condition has been rectified the RESET button must be pressed for 3 seconds to restart the boiler.
Click HERE if an E Code is displayed.
Do NOT hold the RESET button in for 5 seconds otherwise this will activate the de-aeration process. The boiler will run in this mode for approximately 5 minutes before restarting.