Sorry to inform you this heater has been Discontinued by Dimplex and they no longer support or supply parts for the Duo Heat Storage Heater. Until a time they can find an overseas supplier of the circuit boards that often go within these heaters.
Please see our easy to use Video on setting up of the night storage part of this heater Click Here
For faults Please see this video made up to do a diagnostic of what the fault is without us attending site Click Here
Fault Code Download