While you wait for answers, we may have found some information which could help you.
Click here for Purchased Model Oil
Oil filled radiator won’t stop clicking?
Efficiency of my oil heater?
My electric oil heated radiator isn’t heating up properly. ?
Low pressure below 1, Lockout on. won't rest?
Dimplex RMG25 causes circuit breaker to pop?
Sorry the make is dimplex model FC2009Ti?