While you wait for answers, we may have found some information which could help you.
Click here for Heater Filled WorkingDimplex RMG25 causes circuit breaker to pop?
Oil filled radiator won’t stop clicking?
Efficiency of my oil heater?
Low pressure below 1, Lockout on. won't rest?
Sorry the make is dimplex model FC2009Ti?
Fix my oil filled heater?