worcerster bosch 30 cdi system boiler

[Chriswareham]

boiler runs at 75c then drops to 45c the buner cuts off and fan goes to low speed as if in condences mode i have change the pcb board and wiring loom high limit stat and primiy stat i think it may be bad pump circulateteison but the pump seems to be runing ok (but may be not) ?
dose any one have any thoughts on this thanks chris

 

[Last Plumber]

My thoughts are, first of all are you gas safe registered?

If you are send your details in and join the gas safe registered only section then we can discuss it further!
Another thought is what was the reason for changing all those parts?

 

[Dotty]

As above