We may have found other answers which could help you.
Click here for Valve Relief WaterLow pressure below 1, Lockout on. won't rest?
How can I mend my Hyundai oil filled radiator?
vonhaur Dragan 2500w oil electric heater no power?
Fix my oil filled heater?
Dimplex RMG25 causes circuit breaker to pop?
Where can I get a manual for my ritetemp oil heater ?