While you wait for answers, we may have found some information which could help you.
Click here for Fuel Pump Burner HelpWhat size spanner to free rad bleed valve?
Low pressure below 1, Lockout on. won't rest?
Oil filled radiator won’t stop clicking?
Efficiency of my oil heater?
My electric oil heated radiator isn’t heating up properly. ?
Dimplex RMG25 causes circuit breaker to pop?