While you wait for answers, we may have found some information which could help you.
Click here for Wiring Bought Switch
Oil filled radiator won’t stop clicking?
How can I mend my Hyundai oil filled radiator?
Efficiency of my oil heater?
My electric oil heated radiator isn’t heating up properly. ?
Low pressure below 1, Lockout on. won't rest?
Dimplex RMG25 causes circuit breaker to pop?