nest 3rd gen

Morning, quick question - I am going to add weather comp to my existing setup (Logic Max System 2, S Plan, 250L tank, with Nest) however the installation diagram shows SL2 In to HW off as triggered by the cylinder stat. However, there is no HW off wire from the cylinder stat at the moment...

Hello, I’ve been going round in circles on this and could really do with some help! I have a Glowworm Easicom 28 Boiler which connects to a Glowworm thermostat in my hall. I would like to instal a Nest 3 to improve efficiency (and because the controls on the thermostat are very clunky). I think...

This is the wiring block on my Worcester Greenstar 27ri boiler. I just want to check that a dual channel Nest Heat Link will work with it? If it's simple to wire up, a nudge in the right direction would also be massively appreciated. Thanks very much, Simon

I have a Google Nest 3rd gen, bought 2022. The Away Mode is driving me mad. I turn the Away Mode on when I go away (which supposedly puts the heating to 'Eco' 10.5 degree mode). But then checking the history in the app, I can see that my heating has still been coming on according to my usual...

I am wanting to replace my current thermostat/ programmer with the Nest 3rd generation. I have a conventional boiler. Before I go ahead and buy it I want to make sure it will work and what wiring needs to be in place. Any help is appreciated. The large amount of wiring is located beneath the...

Hello, I have just had installed a Nest 3rd Gen thermostat so I can control my heat remotely, on my 12 year old Worcester Bosch 40CDi Combi Boiler. Everything appears to be working just fine apart from it seems the heating pump runs continuously 24/7. Im pretty sure this should not happen...

Hello, I spent some time reading threads on forums to figure out how my heating system should be wired. I need guidance from those more knowledgable than I. My current set up consist Intergas Xtreme 36 boiler with two Opentherm inputs. Nest 3rd gen connected to one Opentherm input to control...

Hello! I'm looking for some assistance with installing a Nest Heat Link and Thermostat to my old Boulter Camray 5 combi boiler. I have a programmer fitted to the boiler which is original as far as I can tell, with the programmer and wiring diagram shown in the images below. I'm confused as...

Hi, I'm looking to upgrade the wireless thermostat system used on my Glow-Worm Ultracom 2 35 Store from a Climapro2 to a 3rd Generation Nest I've recently purchased. I had hoped I'd be able to hook into a couple of screw terminals on the 24V board (after getting 240V from the junction box...

I have a Nest z3rd generation learning thermostat fitted in my static caravan which controls the heating on my Morco GB 24 boiler. I will soon need to winterise my caravan and will be draining down the hot and cold water system using a Floe 868 and setting the boiler to frost stat. Am I right...

Hi all, Having some issues with Nest or boiler not sure what one is causing the issue. It’s a Biasi advanced 25c boiler with Nest 3rd gen thermostat. Basically been working fine for the 4 years it’s been installed, went to test it out a few weeks ago and it wouldn’t fire up in manual mode but...

Hi all, Apologies another nest thermostat query re installation. Reading the other pages has been helpful and think I'm nearly there. Current set up: from mains fuse box 3 core cable to isolation switch - then a Live and Neutral come off and go to control panel (currently centaurplus c27), a...

Hi All, Recently moved into a new house and hot water is not triggering the boiler to fire up. Not sure what's causing this but since I wanted to install Nest anyways I thought I'd get this done and see if the problem remains. My System has a hot water tank with 2 motorised valves and as per my...

Hi We recently bought a new home that already had a Nest heat link and thermostat, which we have taken on. Everything was working well and the system had learnt our schedule, giving us heating and hot water at certain times of the day. Due to a kitchen refurbishment, we needed to move the heat...

Hi all, I want to replace my current thermostat (pictures below) with the Nest Thermostat, but wire labels don't match. My boiler is Worcester Greenstar 24i Junior combi boiler, which is on the back of the wall where the thermostat is. Any help is massively appreciated on how to set it...

Hi, I’ve read multiple posts about installing the Nest Heat Link to the Honeywell Smartfit. However I seem to be struggling on how to physically wire it up. The attached photo is how the smartfit is wired up currently with everything working. Can anyone offer some advice and guidance on how...

Hi Folks, I can’t see that anyone has answered this anywhere else… Plumbers are coming next week to fit new boiler and nest thermostats, Replacing a pair of oldish wireless ones. I have asked for the the thermostats to be wired in rather than wireless, which they are happy to do as long as...

Hi, We have just moved in to an old property with a Ideal Mexico 2 boiler controlled from a Horstmann Potterton controller. The timer function has just stopped working and I thought I could upgrade the potterton controller to a Nest thermostat with heat link. I think the Ideal Mexico 2 is a...

Hello I managed to replace our old Honeywell ST9420C and wireless thermostat with the Nest Learning Thermostat V3 using the following wiring layout: Honeywell-Nest N-N L-L, 2 & 5 4-3 3-6 Previously, on the old Honeywell programmer there were just 4 wires - N, L, 3, 4. This is working fine...

UPDATE: Now resolved this myself, thanks to earlier post by Muggles. I just forgot to put the additional live connections to T2 and T5. Silly mistake on my part but all working fine now. Hello I’ve just bought a Google Nest Learning Thermostat v3 to replace our old setup. Sorry, I know there...