We may have found other answers which could help you.
Click here for Radiator Heater Replacement
Low pressure below 1, Lockout on. won't rest?
Oil filled radiator won’t stop clicking?
How can I mend my Hyundai oil filled radiator?
Fix my oil filled heater?
Glen Dimplex Oil Filled Heater OFC2000 2KW?
Dimplex RMG25 causes circuit breaker to pop?