While you wait for answers, we may have found some information which could help you.
Click here for Dimplex Storage Heatercannot turn off dimplex electric fire?
How to change LED driver on Dimplex fire?
Help on how to fix my dimplex clb20r?
Dimplex 403BT convector heater?
How to reset Dimplex storage heater CXL5N?
Dimplex Cavendish Optimyst electric fire?