While you wait for answers, we may have found some information which could help you.
Click here for Working Oil FineWhat size spanner to free rad bleed valve?
Where can I get a manual for my ritetemp oil heater ?
Oil filled radiator won’t stop clicking?
Dimplex RMG25 causes circuit breaker to pop?
Glen Dimplex Oil Filled Heater OFC2000 2KW?
How can I mend my Hyundai oil filled radiator?