While you wait for answers, we may have found some information which could help you.
Click here for Dimplex Replace FireDimplex Cavendish Optimyst electric fire?
Dimplex duo heater?
cannot turn off dimplex electric fire?
How to change LED driver on Dimplex fire?
Faulty lights on Dimplex mk11?
Dimplex Optiflame X1S Series B stopped working?