E
Ermintrude
Recovery time 3ms! Boiler well over sized. U needed 837 combi or perhaps a better solution would have been 24kw system boiler.
Discuss Vaillant Eco Tec Plus 637 - issues in the Plumbing Jobs | The Job-board area at PlumbersForums.net
i am more of a 18kw if not 15kw tbhRecovery time 3ms! Boiler well over sized. U needed 837 combi or perhaps a better solution would have been 24kw system boiler.
before ordering this model I checked on vaillant site with my requirement and it suggested this model and also the fitter and builder had suggested this
"ditto" LOLThank you Zebedy for re-enforcing the points made earlier in this thread.
before ordering this model I checked on vaillant site with my requirement and it suggested this model and also the fitter and builder had suggested this
"ditto" LOL
Good shout Phil. Overlooked that one as it is mentioned somewhere (can't be bothered reading through it all) that vaillant came out¿
Btw i wonder why have they made the new links a bit bare silver wire you can (well i can't) hardly see instead of a nice bit bright red? Maybe to reap some call out cash??
Me think :
if the link was in the Vaillant engineer would have seen it !?
Doesn't look like the vallient engineer has resolved the prob from the last post it still sounds like the boiler is constantly on to me that can only point to the live link being left in
Is the programmer opening and closing the zone valves ?
I think the problem is that the installer has left the 24v rs link in the boiler
This needs to be taken out when using external controls hense why the boiler is on constantly on
the reason it keeps going on and off all the time is that the boiler is just pumping round a small circuit when the zone valves are shut then when it reaches 75 degrees will turn off eventually the boiler will overheat and u will have to keep re setting it
When the zone valves are open ie when on at the proggramer the boiler will work fine
Should be a simple fix really hope I explained this ok
who knows Phil we need a picture to be 100% sure
View attachment 15096
I can see the 24v pin is removed, is that what you guys were referring ?
Thanks,
is it me but is there just three wires coming into the boiler no switch live?
There is a black going into RT.
Check external wiring and zone valves for sticking micro's
or tell your builder (if that is who you paid for the plumbing works) to get someone else in to sort it !!get somebody in asap to sort this mess out can't really help u out anymore than that my friend
end of thread ?
Reply to Vaillant Eco Tec Plus 637 - issues in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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