Halstead Boiler Problem

[chadvandonkey]

It was never fixed. I traced the wiring that I could and I couldn't see anything amiss. I was confident that the parts I replaced were like for like and I was careful to swap a wire at a time from old to new components.

It still blows fuses almost daily but as you've seen from my other posts I have plenty of problems with the heating system so I'm just trying to keep it going until I can afford a new boiler.

I believe you're right as the cylinder stat does fuse its contacts when the main fuses pops but I haven't got an answer yet.

I had a Heating Engineer in to quote me a new boiler and he didn't know what it was off the top of his head. I don't want to spend out much on it as it's money towards a new boiler but if I could just get a fix I'd be happy. I'm going to swap the tank stat back to the original although the same problem was evident with that one.

 

[kevindgas]

the grey wire (Live) on the mid pos valve appears to be connected to 2 blue wires where do they go?
also the white 5 core at the top of picture appears to have no earth connection WHY?

i suspect that the blue wire on the 6th terminal down (left handside) may be a neutral?

 

[chadvandonkey]

The grey from the 3 way valve - 6th down on right goes to a blue which disappears downstairs and to the light blue of the tank stat which according to the instructions is terminal no. 2 "satisfied".

The white 5 core is to the tank stat which doesn't have an earth for that model - according to the back of the box.

 

[Agile]

Where is D Hailsham when you need him?

He has plenty of time to examine each of your connections in turn.

Tony