Nest Thermostat wiring issues

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Discuss Nest Thermostat wiring issues in the Central Heating Systems area at ElectriciansForums.net

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kev sanderson

ive fitted a nest thermostat to my CH system, which i believe to be a heat only system, but cannot get it to work off the wireless stat,

it works on manual, and when in auto mode i can hear the Nest Heat link relay clicking on and off as i adjust the wireless stat but the heating doesn't come on,

what should i do with the existing room stat wiring? ive been advised that i should connect the SW Live and Common together ?

one thing ive noticed, is that when in manual mode im getting 230V out of the HW & CH normally open terminals, as i would expect? but in auto mode, when i turn the thermostat up, i get 230V out of the CH NO terminal, but 0V from the HW,

should the HW connect to the HW NC terminal? this gives 230V when in auto mode

Thanks
 
Murdoch said:
wonderful.

Buy from Amazon, no technical help. Very little UK taxes paid.

Hoping from free advice on here...
Click to expand...
Wow , i thought this was a technical help forum not a political forum, pretty new to this forum but first impressions are its not a very helpful forum to be in, thanks for your valuable input
 
kev sanderson said:
Wow , i thought this was a technical help forum not a political forum, pretty new to this forum but first impressions are its not a very helpful forum to be in, thanks for your valuable input
Click to expand...

It’s not a technical help forum, it’s an electricians forum (the clue is in the title)
The vast majority of members are electricians who install such equipment for a living, some of us are nest pro installers. Why should we give you instructions on how to do our job for free, especially when you are working with electricity which has the potential to kill you if you make one simple mistake?
 
I would advise looking for your nearest Nest approved installer and getting them to take a look.

TBH I'm surprised we haven't had more Nest DIY questions this weekend.
 
Strima said:
TBH I'm surprised we haven't had more Nest DIY questions this weekend.
Click to expand...
Probably because winter isn't over yet. Most sensible people perhaps are waiting for the weather to warm up, before they get lost in heating wiring and end up leaving their house very cold as the snow continues to fall.
 
Murdoch said:
People think that Nest (and others) save energy ................. I think a lot are sadly disappointed.
Click to expand...
Since installing my Nest my gas usage has dropped. But I won't know for a couple of years if I have saved anything as I'll have to compare usage over a few years.

It does however allow me to adjust the temperature and set a schedule which makes my heating system more efficient.

For example during the day it's set to 20c, young kids in the house so normally higher than I like it. At 23:00 it is set to drop to 18c and then back up again at 06:30 so its warm enough for the kids when they wake up.
 
Strima said:
Since installing my Nest my gas usage has dropped. But I won't know for a couple of years if I have saved anything as I'll have to compare usage over a few years.

It does however allow me to adjust the temperature and set a schedule which makes my heating system more efficient.

For example during the day it's set to 20c, young kids in the house so normally higher than I like it. At 23:00 it is set to drop to 18c and then back up again at 06:30 so its warm enough for the kids when they wake up.
Click to expand...
bloody hell, your gaff must be like a sauna. we rarely turn ours up above 16 C.
 
telectrix said:
bloody hell, your gaff must be like a sauna. we rarely turn ours up above 16 C.
Click to expand...
It does get a tad warm but SWMBO and the little ones complain about the cold, when I tell them to put their coats on I just get stared at...

It's like the village of the damned at times in my house.
 
bloody kids don't know that they're born. when i was little, had to get up at 7.00am, scrape the ice off the inside of the bedroom window to see how many vests i needed to wear for the 4 mile walk to school, get the frozen milk off the doorstep, light the coal fire, feed the chickens, slurp down a bowl of almost cold gruel, let the cat in and the dog out. turn on the radio so that it was warmed up in time for me dad to hear the 8 o'clock news, find out which of his favourite pubs hadn't been bombed. happy days.
 
telectrix said:
bloody kids don't know that they're born. when i was little, had to get up at 7.00am, scrape the ice off the inside of the bedroom window to see how many vests i needed to wear for the 4 mile walk to school, get the frozen milk off the doorstep, light the coal fire, feed the chickens, slurp down a bowl of almost cold gruel, let the cat in and the dog out. turn on the radio so that it was warmed up in time for me dad to hear the 8 o'clock news, find out which of his favourite pubs hadn't been bombed. happy days.
Click to expand...
 
Younpusgthe controller button

you a wannabee scouser?
 

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