While you wait for answers, we may have found some information which could help you.
Click here for Help Heater Heat FuseDimplex 403BT convector heater?
Looking for reset button on dimplex convector heater DX25F10?
Faulty lights on Dimplex mk11?
How to reset Dimplex storage heater CXL5N?
Dimplex Optiflame X1S Series B stopped working?
Dimplex duo heater?