nest

Hi I am sorry for resurrecting this issue but I am a bit lost and need help. Have a nest 3rd gen heatlink and I am replacing the current thermostat, a Honeywell ST900. I have connected the L /N correctly and the heatlink powers up but the pickle I face relates to the 2 wires coloured black and...

Hi All, I have recently purchased a Nest to install alongside my combi boiler. My boiler currently does not have a thermostat, it has a timer / controller on the boiler that I use to turn on / off the CH. The thermostat connections on the boiler are 'volt free' and currently there is simply a...

I have installed the nest replacing Grasslin control box and Honeywell thermostat. I can only get hot water and heating when the nest thermostat isn't connected. Any suggests??

I’m looking to self install a Nest Learning Thermostat on my Worcester Bosch 280 boiler. The wiring looks straight forward, but I just wanted to sense check before I go ahead. The boiler doesn’t have a stat currently, so on the stat section has an unused N connection. 1 & 2 are jumpered (2 shows...

Hi all, I'm installing a new Nest heating and hot water thermostat and I'm trying to identify the 'call-for-heat', 'common' and 'satisfied' wires in my existing Honeywell ST9100A hot water control so I can switch them to the Nest. Can anyone help please? Many thanks!!

hi this morning my alarm went off while my house was heating up in the morning. The downstairs zone was active and we where in bed. Has anyone had issues with timed heating causing the alarm to go off. I checked the logs, it was the lounge senor that was triggered. To add to the mix my wife...

Hi All, I have recently taken delivery of a nest 3rd generation and fairly confident in installing it but for my own clarity can the following be confirmed for me. Currently have an alpha 28c boiler with the alpha receiver plumbed into it as below (attached) Now the wiring the diagram matches...

Hi, I'm trying to install a Nest Heat Link it to link to my Potterton Promax SL boiler, and worried I don't fully understand the wiring on the back of my old programmer! I figure it should be fairly straightforward to swap over from my old programmer to the Heat Link, from seeing similar...

Hey all, I've read numerous threads on here about installing Nest 3rd generation into the home (such as this good one - kudos to @stem). I'm really tempted to do this myself but my wife will kill me if I screw up the heating at this time of year! If anyone can give me some pointers, it would...

I recently installed the Nest Thermostat in my house. Since then I have noticed that my boiler seems to Heat for 10-20 mins and then shut off, then rest for 10 mins and then repeat. This to me seems incredible ineffecient. I cannot tell you if it done this before of whether this is a new thing...

Hi, Merry Christmas to all. I hope I can enlist the help of some of the kind experts who read these pages. If this post seems familiar I posted something similar a few weeks ago about connecting my boiler to a Hive system. I am now in the process of swapping the Hive for a Nest 3 so my...

Hi, I am installing a Nest onto a Worcester 25Si combi. It is to replace a Drayton SCR/ Digistat +3RF. I wanted to double check the wiring- ie. can I swap it like-for-like? Wiring, as shown in the pics (http://imgur.com/a/Ri7GW), is currently: Blue- N Brown- L Black- 1 (C) Grey- 3 (Call) Earth...

Hello, I have a year old valiant ecotec pro 28 boiler fitted with a wireless salus thermostat. I want to swap out the salus unit and install the nest system. Ive read loads of forums and still not quite shore what terminals to connect to, could anyone offer a simple diagram or pictures of what...

Hi All, I have recently purchased the 3rd Generation Nest Thermostat. I managed to wire the heatlink up replacing the old controller next to the boiler. The thermostat connects perfectly and this now runs smoothly and I can trigger the heating on and off wirelessly. My next task was to...

I am just about to replace my thermostat with a 3rd Gen Nest . I have a Franco Belge Idris Exclusive combi boiler , with a simple thermostat. But am struggling with the wiring on the Heatlink . I'm going wire the L and N (on the Heatlink) from the boiler no problem then bridge the L to 2 on...

Hi all, I have a Vaillant ecoTec 832 (combi boiler) with a vaillant RF 350 thermostat and I am looking into replacing it with a smart thermostat either the nest or the hive. circuit board: https://goo.gl/photos/ZsiE4uNBobobrFnp8 schematic: https://goo.gl/photos/N6vT8yuu9Y5wDRoj8 I am...

Hi All, I made a post a few days ago about how to wire my Nest 3rd Gen Heat Link. User jackthom kindly replied and everything seemed great. However I've noticed that the Heat Link isn't turning on the hot water. The central heating work fine. The original wiring of the programmer was...

I'm getting ready to fit a new 3rd generation Nest thermostat (and Heatlink). When I've looked at the wiring centre it doesn't look like any wiring diagram. There are no wires to positions 1,2,3,4 & 5. There are connections to positions 6, 7, 8, 9 & 10 with permanent lives on 11 & 12. The issue...

Hi all.... I think it's possible to fit a Nest to my Vaillant 828 Turbomax boiler but I'm pretty confused about the whole thing really and there are so many different threads about doing it, I'm even more confused. I must say THIS thread is useful as it discusses fitting to a 824 boiler. Part...

Hiya, I'm just getting ready for a bit of Sunday DIY but thought I would quickly check the wiring. This forum has been brilliant in getting me up to speed, but nothing wrong with a little confirmation from my peers! So... I think I've established that I can replace the Integral Timer in my...