While you wait for answers, we may have found some information which could help you.
Click here for Leaking Hot WaterFix my oil filled heater?
Glen Dimplex Oil Filled Heater OFC2000 2KW?
Dimplex RMG25 causes circuit breaker to pop?
Low pressure below 1, Lockout on. won't rest?
How can I mend my Hyundai oil filled radiator?
Efficiency of my oil heater?