It has been working brilliantly up until a few weeks back when the screen just went blank, i changed the batteries and it started working again but is reading the room temperature wrong. To ensure proper operation of the programmable room thermostat, study user guide, presented in a convenient graphical format that contains 16 pages with useful information. To further improve the ease of use and assist installation, the CM700 range includes a large LCD display.

I have made no internal connections, simply attached the brown to the L terminal on the Hive faceplat and the black to the L terminal on the Hive faceplate. I was told that I can bridge the wires to decommission the zoned wired thermostats which will give the wireless thermostat full control over the heating and always keep the valves open.I can keep the temperature at a base level, then give it a couple of hours boost during the day, and it will be up to temperature when I get home when it throttles back again and the residual heat keeps the room warm. They also appreciate the programmable feature, which allows them more accurate control over the house temperature. They say it is a great product that allows them to set differing temperatures during the day and on different days. It's attractive, and there is an openable cover which normally hides most of the buttons, except the ones needed for everyday functions.

Equally though it can be programmed for completely different times every day of the week making it much more customable for individual lifestyles. There is a wired thermostat in the front entrance room that controls all the hallways and the downstairs rooms and another wired thermostat in one of the bedrooms which controls all the upstairs rooms and bathrooms. It is compatible with a wide range of heating systems, including combi boilers, and can be wired or used wirelessly with an RF module. Occasionally, nothing seems to be able to turn it off- not lowering the set temp, switching to manual, or even turning the unit off.From as small as a radiator valve, to as large as a boiler, we offer a broad range of styles and budget options to suit every need.

However with a gas modulating boiler this is counter productive, as every time the boiler is switched off by the thermostat any heat in boiler is lost out of the flue, and on switching on again it does so at full output, so the boiler never gets time to modulate and the mark/space switching does seem to work, but causes the boiler to work inefficiently. This will also need wiring changes as right now, the wall thermostats control the opening of the valves. Anyway, you can just terminate this in the wall box (if you can track it I'd also disconnect the other end and leave safe just for consistency). Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Place the thermostat about one and a half metres above the floor, not in the sun and not on an outside wall.

You already have a live supply to the thermostat which you can link to the L, but you will also need a neutral for N. If you have another timer somewhere (Honeywell ST9100C) that is presently controlling the heating, then that would need to be set permanently on 24/7 otherwise it will override the Hives. But you also say "New Build" it is required to have zones in new builds, all that is required is TRV heads, but often one finds zone valves, but the Nest system does not seem to be designed to work with zones, EPH do an OpenTherm thermostat which can be set as Master/Slave but I know of no others, often the zone valves need removing to fit the likes of EvoHome or Wiser. As per the image, my current thermostat has a brown wire connected to A (Live according to the sticker?