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Gorners - He connected it to the heat link which sits under my boiler in the utility room. It’s just a temporary measure so that it’s useable. I don’t want my nest thermostat to remain there. I want it in my hallway on the wall where the original one was. Stem - the 17v is a reading he was...

Don’t want to DIY at all Ericmark. Simply questioning what a professional has told me as it sounded bizzare. Gorners - the wire is currently coming from the water cylinder which is upstairs. When the nest wouldn’t turn on, he connected it to the heat link for now so that I can use it. So in...

He was saying that it’s getting around 17v which is too high and won’t let it switch on. As mentioned above, nest only requires 12v. Is there anyway to reduce the voltage down to the 12v required? I don’t want to have to use a stand. I’d prefer to stick with the old thermostat than get a stand.

Really? Is this bullsh*t? He was ages trying to get it to turn on but gave up for a finish.

hi, I'm getting a nest thermostat fitted by a local gas engineer but he's telling me that the voltage is too high coming through where the original thermostat was fitted and he wants me to put the nest on a stand? Does this sound right? He's saying that the nest won't turn on because of the...

Thanks for all the comments. It seems to have evolved a bit again. Now the boiler runs for 20 mins but then turns off and on every minute or so as it tries to get close to the target temperature. It's a long way way the target temperature when it starts behaving like this. any ideas or...

Thanks for your comment Dan. I’m not an expert though, could you expand a little more please? Is it an issue that it keeps stopping and starting?

Thanks Stem for the quick response. Nest is fitted with 10 days now, could it still be learning? Could the extra firing up of the boiler cause damage to the boiler if this was to continue? It seems to stop and start about 4 or 5 times before it reaches the target temp?

hi, I recently had a nest thermostat installed buts it's making my boiler turn on and off a few times before it reaches the target temperature? This never happened with my old thermostat - boiler stayed on until it reached the set temperature. Could it be that the nest isn't wired properly...