While you wait for answers, we may have found some information which could help you.
Click here for Oil Pump UsEfficiency of my oil heater?
vonhaur Dragan 2500w oil electric heater no power?
How can I mend my Hyundai oil filled radiator?
Dimplex RMG25 causes circuit breaker to pop?
Oil filled radiator won’t stop clicking?
Low pressure below 1, Lockout on. won't rest?