nest 3rd gen

I have a danfoss hsa3 with 3 way valve. In the last month it has stopped functioning correctly. Now when CH is called only the motor winds, clicks the midway micro switch briefly then clicks back slightly past the switch turning it off again. If HW and CH are called then it’s both work. HW...

Hi All, I'm looking to replace my Drayton Tempus Six controller with the Nest Heatwave but I'm unsure of the wiring - can anyone help please? Attached photo is my current wiring. Thanks

Hi - trying to replace my British Gas UP2 with Nest 3rd Gen Thermostat. Picture of UP2 wiring: Image-2 by Lch posted 29 Sep 2018 at 4:30 PM Did the following configuration: UP2 'N' (blue) goes to Nest 'N' UP2 'L' (red) goes to Nest 'L' UP2 'Ground' (yellow/green) goes to Nest 'Ground' UP2 '3'...

Hi all, I just bought a house and noticed the central heating wiring was a bit of a mess. I bought a Nest 3rd gen and thought it would be worth trying to sort it whilst fitting it into my new house - everything was wired straight into the old Honeywell ST7100 without any sort of junction box...

Hi All, I’m having some building work done and plan to swap my Honeywell ST699 to a nest thermostat following the work. One question I have is regarding the room stat I have in my lounge. Is this needed following the nest installation? If I was to disconnect the room stat now before I install...

Hi all, I am moving into a new home and wanted to install the Nest. I looked at the wiring to the Drayton reciever which seems simple enough, also wiring from the Glow worm boiler. I have the Neutral and Live coming from a fused switch and then 1 and 3 coming from the boiler. My assumption is...

Hello - I'm a newbie on the site, and I've seen that folk are pretty helpful so thought I'd make my first post. I bought a Nest 3G thermostat and am looking to have it installed. I'm getting quotes for £100 locally and want to see if I can do it myself first. I have already taken a look at...

Guys, I was really hoping someone can help me with this please. I have recently replaced a Drayton 7 with a nest 3r gen thermostat. I have used the plan wiring it worked fine this morning. When I then replaced the satchwell thermostat in the front room with the nest it stopped working. Below...

So there I was I planned everything in advanced for my father's home. He sent me all the details of our current boiler and heating system and I was convinced that it was a y plan system because i have a 3 port valve that says "y plan". I arrive to do the job and I see this silly wire set up. Why...

Hi, I have just moved in to a new build home and am thinking about replacing the thermostats with Nest 3rd Gen. The property is Gas and has instant hot water. The house is zoned, upstairs and downstairs with a thermostat in each zone. Boiler = Ideal Logic Combi c30 Programmer = Danfoss FP975...

Hi, I am trying to fit a Nest 3 from the existing wiring in the Honeywell ST9100A unit. I replaced the wiring like for like and taped the earth. The Nest powered and the Heat Link clicked but the boiler did not fire up. There is a wall thermostat fitted which I will leave there and use the...

Good morning everyone, I know there is many a thread on this sort of thing but the issue i am having is a strange one so i wanted to double check what I have done. I replaced my danfloss programmer with a nest about 6 months ago. It works as expected so programs, call for heat and water all...

Hi Ive just installed a nest v3 Thermostat to control heating and hot water on my existing system which is Potterton Suprima 100L Boiler Honey well ST6400C Programmer Honeywell v4073A mid position diverter valve The old system didn't have a main thermostat , just TRV's on every radiator. I've...

Hello all i have the GLOWWORM FLEXICOM 30cx combination boiler, i have bought the Nest V3 smart thermostat , i have wired up the boiler and the thermostat as far as i know correctly from the diagram with the nest instructions This is the fused power switch to the boiler the white sheathed...

Hi all, I am looking at upgrading to a nest thermostat but I am a tad useless so need some help. I have a Potterton ep2 controller and Potterton suprima boiler. Will this be compatible with the nest 3rd gen thermostat? Please let me know if you need more information! Thanks in advance and...

Hi, I'm looking for some advice on a new Nest V3 Installation for hot water and heating control. I currently have a Y plan system with the following components: - Boiler - Ideal Classic FF350 in the utility room. - Programmer - Danfoss FP715 (below the boiler). - Danfoss - thermostat in the...

Hello, I'm after a little help on wiring a heat link into a Baxi Duo Tec 33 Combi boiler please.. There is a wireless Salus RT501RF RF (XL) installed at the minute. Removing that is simple, it's figuring out the call for heat terminal that I'm struggling with! I'll and attach photos of the...

Hi can someone help! Our boiler man has brought in an electrician and both seem to be lost. Is it possible to have a nest setup to work our UFH setup.Any help would be greatly appreciated. Our Combi boiler is a Glowworm Ultimate2 35c. We now have 2 two port valves installed after the boiler...

Hi, I have what seems to be a complex system with a Worcester Greenstar RI condensing boiler, a hot water tank with two pumps for HW and CH, a Horstmann C21 programmer, linked to a Drayton Digistat+ wireless thermostat. I'd like to replace them with a Nest V3, but I discovered a nightmare of...

I have a 3rd gen Nest thermostat that connects to my Vaillant ecoTEC pure 825 combination boiler. I’m having an issue that I have no hot water unless the radiators/heating is on. I have to keep setting my thermostat to higher than room temperature so that I can get hot water from the tap. I...