Alpha CB24 CH boiler - Clock/remote stat issue

[Threadingham]

Please Help! The story so far

I have an Alpha CB 24 combi boiler with hard wired external room stat and a programmer/clock installed into the boiler - About 3 weeks ago the CH side of things stopped working (hot water still OK), I followed the fault finder and thought the problem pointed towards the clock/programmer. At this point I unplugged it and connected the wires so it just run off the room stat and it all worked OK.

Rather than replace the clock I thought I would upgrade to a programmer/remote room stat (model alpha easystat 6.100250) which I did. I followed the very simple instructions to the letter but at the end I could not get the CH to come on. I am now thinking the original clock was never broken and I have a completely separate issue, can anyone help?

cheers, Stuart

 

[possum_jenkins]

If it worked when you linked it out there is no reason for it not to work with the new clock.

My money is on it being wired incorrectly.

 

[Threadingham]

All wired exactly as per instructions, my only thought is do I need to establish a link back at the main terminal block now the hardwired room stat is removed?

 

[possum_jenkins]

There is a link on the main terminal block between 1 & 2. You need to remove this and wire your Switched live to term 1.

 

[possum_jenkins]

Sorry didnt read that properly!

You'll have to link terminals 1 & 2!

 

[Threadingham]

Cheers, I will attempt first thing in the morning - dont want to be without heating tonight if i cock it up!!!!!!!!!!!!!!

 

[possum_jenkins]

thought your heating wasn't working??!!

 

[Threadingham]

Possum,

sorry for delay - heating was still working but via the old room stat only. Your suggestion was spot on, I now have a flash new programmable room stat (remote) and am very happy. I have new problems with TRV's and column rads but wont go there yet.

Thanks again.

Stu