While you wait for answers, we may have found some information which could help you.
Click here for Boiler Cold Radiatorvonhaur Dragan 2500w oil electric heater no power?
What size spanner to free rad bleed valve?
Fix my oil filled heater?
How can I mend my Hyundai oil filled radiator?
My electric oil heated radiator isn’t heating up properly. ?
Dimplex RMG25 causes circuit breaker to pop?