Yes there is a reset on the main selector switch, which I have tried by rotating to the left for two seconds as indicated in the instructions. I have done this with success on several occassions before.
The 30 degrees is the burner/ignition light (which is not lit at the minute)
The 50 degrees is some sort of fan symbol?
I have tried that the boiler looks like it is going to start initially but the two lights 30 & 50 start to flash and the boiler doesnt light. I have tried this several times previously? There is a fan/pump type noise coming from within the boiler?
Yes, I am an electrician,the pump is running i need to find the fan then?
The fan is not running
There is no power to the fan
Yeah i can follow the guide
There are two blue cables going to the flue at the top of the boiler will that be the APS
I can see it but am unable to blow into it, it is in the top right hand corner behind the fan. I have tried tapping it?
Top left corner not right?
Which one the clear one or the black one?
I blew into the clear one and the APS clicks ok
I have no power to it?
Apart from the mains I only have power (230V) to terminals 5 & 6 on A4.
Is it not the PCB that needs replacing, that was my initial thought this morning?
Is that it now you're not coming back online I take it?
Term A2 - across 5 & 7 no power, replace PCB
Term A2 across 1 & 2 overheat stat shorted out, replace PCB?
No power to all
The pumps is running as previously mentioned and I have carried out the checks mentioned above?
How do I see if it is lifting, I assume you mean the primary flow switch?
Where is the primary flow switch?
Yeah it closes then brakes when i turn the power off
there is 12v across the cables when the pump is running and nothing when it isn't
You keep leaving all the time
Get back to me please
Yeah it is closed
As above it is closed when the pump is running?
Yes as above it is open when the pump is off
Ok thanks that confirms what I thought initially i just wanted to speak with somebody with Boiler knowledge before i bought a new PCB.
Thanks for your time.