While you wait for answers, we may have found some information which could help you.
Click here for Oil Filled StoppedHow can I mend my Hyundai oil filled radiator?
Low pressure below 1, Lockout on. won't rest?
Glen Dimplex Oil Filled Heater OFC2000 2KW?
My electric oil heated radiator isn’t heating up properly. ?
Fix my oil filled heater?
Efficiency of my oil heater?