Y Plan - room thermo doesn't fire boiler
- Thread starter Doc Lenny
- Start date
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ChrisR said:
It isn't wired correctly then, if you meant exactly what you said.
Here's where the grey wire should be at 0v, : HW on at programmer but satisfied at cyl stat.
dont honeywell cyl stats not have a neutral and the comman (1) is live when prog calls??
and chris he wont waste his money
No honeywell cyl stats don't have a neutral.
Yes the common is live when programmer HW is ON, but the grey wire wouldn't be at 240.
I expect you're right, that it IS a faulty valve and the poster is incorrect in his observations about the grey wire always being live, but since he said it, I thought it worth picking up.
Fully admit I've come across more different types of fault in hwell heads than I understand, but it has to be worth checking the wiring.
Yes the common is live when programmer HW is ON, but the grey wire wouldn't be at 240.
I expect you're right, that it IS a faulty valve and the poster is incorrect in his observations about the grey wire always being live, but since he said it, I thought it worth picking up.
Fully admit I've come across more different types of fault in hwell heads than I understand, but it has to be worth checking the wiring.
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It isn't wired correctly then, if you meant exactly what you said.
Here's where the grey wire should be at 0v, : HW on at programmer but satisfied at cyl stat.
Isn't the cyl stat calling for HW on this diagram and not satisfied as stated?
Confused now! Found this though and it describes the process where it could be going wrong.
//www.diynot.com/forums/viewtopic.php?t=8369
The 2nd post from CH4 that describes
This could be where it is at fault as the system works with all the other scenarios, it would seem that the second micro switch is not restoring power to the pump/boiler.
Just an update.
As you guys thought it was the actuator that was at fault. The fact that the orange wire from the valve was not going live when CH was called for was all the evidence I needed - pointing to a problem with the second micro switch.
£25 and we are all done - thanks to all who helped!
Edit: Thanks to MANDATE also he was right on the button!
As you guys thought it was the actuator that was at fault. The fact that the orange wire from the valve was not going live when CH was called for was all the evidence I needed - pointing to a problem with the second micro switch.
£25 and we are all done - thanks to all who helped!
Edit: Thanks to MANDATE also he was right on the button!
corgiman, thanks for your input also, it was you that convinced me that it was the valve - but as always I had to understand exactly why and that's where all the other input helped.
Again thanks to all who input - toasty tonight.
Again thanks to all who input - toasty tonight.
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