We may have found other answers which could help you.
Click here for Combi Boiler Central Heating Boiler Problem
Efficiency of my oil heater?
Oil filled radiator won’t stop clicking?
Low pressure below 1, Lockout on. won't rest?
Sorry the make is dimplex model FC2009Ti?
How can I mend my Hyundai oil filled radiator?
What size spanner to free rad bleed valve?