We may have found other answers which could help you.
Click here for Central Heating Radiator ValvesOil filled radiator won’t stop clicking?
What size spanner to free rad bleed valve?
vonhaur Dragan 2500w oil electric heater no power?
Fix my oil filled heater?
Dimplex RMG25 causes circuit breaker to pop?
Sorry the make is dimplex model FC2009Ti?