• Thanks for visiting ElectriciansForums.net. We hope you find the information you are looking for. But if you don't manage to, please feel free to Register and ask a question yourself. You can delete your account at any time should you quickly find the answers to what you need.


  1. S

    Wiring to replace old room thermostat to new digital

    I’m replacing a tatty old mechanical Drayton room thermostat with a sleek digital Flomasta 7635G. Could a wise wizard please help decipher the code known as the wiring diagram in the pictures attached. Theoretically, given the ‘standard’ wallplate, I should just remove the old and pop on the...
  2. J


    Is this old thermostat wired right I want to replace it but I’m confused to why the red wire is on no3
  3. M

    UK Nest e thermostat wiring question

    Hi just bought a nest e thermostat . Ive included a picture of the wiring for the old thermostat and the connections for the new nest thermostat. I just want to make sure it’s compatible before I get someone to install it. Which wire goes to which connector for want of a better question ?
  4. S

    Australia Adjust electric BBQ thermostat

    Is it possible to have an electrician adjust the thermostat ( Probe like a frypan ) on my 2000w electric BBQ? When it is cycling on and off the food stops cooking during the off period making for a very slow cook. I'm happy to have an electrician modify it if that's possible Cheers Sunter
  5. H

    Replacing 3 wired thermostat with 2 wired digital thermostat

    A 3 wired thermostat is being replaced with a 2 wired digital thermostat powered by batteries. Is it necessary to know how the 3 wired thermostat is connected to the boiler before replacing the thermostat? I have attached images of the 3 wired thermostat and its wiring diagram.
  6. EricMark

    Linking wall thermostat to radiator thermostat.

    I brought four MiHome Energenie TRV heads from my old home, and I decided in this house Nest was best option to control the DWH and central heating given the limits I had to work with, mainly just 2 wires between house and flat where the boiler is housed. There is an option to link Nest and...
  7. A

    Domestic Am I allowed to fit a Nest thermostat myself?

    As per title really. I’m considering buying Nest thermostats, I am confident I can install it appropriately but I don’t know if legally I’m allowed to. No formal quals but experience in wiring (for audio, not power) radio/recording studios. The current situation... I have a new build property...
  8. B

    Hot water thermostat

    I am having trouble understanding a hot water thermostat which does not behave as expected. What does the "reset" button do, and is it necessary to use it after adjusting the temperature dial ?
  9. C

    Honneywell Thermostat showing low temp and Frost Mode

    Hi My thermostat usually shows a room temp of between 18 and 20 degrees However occasionally it is displaying FROST MODE and showing low temperatures. Basically when it goes like this we can either have heating on or off with no control which is very annoying! Can anyone advise, I have...
  10. D

    Fitting a new WiFi thermostat

    Hi I'm not a plumber but a DIY'r, so wondering if any of you could help me out please. I have bought a static caravan and it has a 'Ariston E-Combi Evo - 24EU' boiler in it but this has a thermostat which is fitted to the boiler itself. I wuld like to change it for a WiFi one so I could put it...
  11. C

    What Smart Thermostat for a 2 Wire Connection? Currently Honneywell

    Hi all, new to the forum. I currently have a Honneywell c901 thermostat set up to control my combi boiler. I've been looking to buy a smart thermostat to replace the honneywell but when I removed the panel, I see it only has two wires, I hear there are usually 4 wires or more. Any advice...
  12. stuarth

    Domestic recommend wireless room thermostat & programer

    Looking for a wireless room thermostat & programer for a customer that is not worried about smart controls but rather ease of use and reliability, what would you recommend that won't break their bank?
  13. E

    Underfloor Heating Thermostat in Bathroom

    Hi, Is it allowable to install an underfloor heating thermostat inside the bathroom but outside any of the listed zones? We are having a room converted into a bathroom and there is no suitable place directly outside the room to install it, however the new bathroom itself is about 3m x 3m and...
  14. M

    Domestic Danfoss CHRONO setting

    I’ve recently had a new boiler and one of your thermostats installed a Danfoss RET1000 B/M/MS thermostat Is it normal for the thermostat to fire up the boiler for 3 minutes and then turn off for another 4 or 5 mins and then come back on for another 4mins etc 24 hours a day once it has hit the...
  15. A

    Thermostat/Control box help

    Hi all. I'm trying to fit some smart thermostats but they require a mains connection. I have the wiring in place from the existing set up (battery powered thermostats), but they have no mains voltage going through them. The wiring goes to a Danfoss WC4/B wiring Centre as the central heating is...
  16. P

    Domestic DHW cylinder thermostat and cut-out.

    Hi again ...... I have inherited a central heating system which is oil fired and ancient (mid 1980's), but works perfectly so up until recently I had no reason to go looking for issues. The only ''new" part is the unvented DHW cylinder which, although it works, has NOT been installed in...
  17. B1gSte

    Domestic UFH thermostat feed what size cable?

    Hi all. I’m just planning out my electrics before boarding the new en suite. Can someone verify. Should a fused spur come directly from a socket or can I break in to a single cable using a Wago box? Also is 2.5mm2 cable ok to the thermostat? I’m not making the connections, I will be employing...
  18. I

    Rewiring fridge to bypass thermostat (for external control)

    Hi, I'm attempting to adapt a fridge into a homebrew fermentation chamber with a digital thermometer controlling the compressor via an arduino and relays. Initially, all I need to do is take out the thermostat and rewire so that the compressor always runs when the power is on, ideally with the...
  19. G

    Megaflo Y plan problem

    Hi there, I have a Megaflow wired to spec here (bottom of p21), i.e. in a Y plan with additional 2-port valve. When CH is on and the stat switches to satisfied, heating sometimes stays on, sometimes switches off as commanded. I thought it might be the 3-port's head so replaced that; is it...
  20. M

    Potterton EP2000 Room thermostat wiring

    Ok im looking at changing my Potterton EP2000 Room thermostat over to hive to channel to work with hw/ch .. the only problem is wiring no 5 . Which is I guess the switch to motorised valve .
  21. T

    Quick Thermostat Query

    Good morning all, Probably quite a simple question for all of those who use thermostats/temperature sensors regularly. I'm in need of a thermostat which has the ability to close it's contacts once the temperature in the room has reached a degree which is deemed too high. Do most thermostats...
  22. Sean Hill

    Replacing an existing thermostat with the Nest

    Hi, I'm having a look at how to install the Nest (3rd gen) I'm I wanted to have a shot at it myself before calling in a sparky. I have a boiler (Ideal Classic) in the kitchen together with a programmer. The existing thermostat however I think gets it's supply from the wiring junction up in...
  23. M

    Relocating a remote wireless thermostat to somewhere out of range of boiler?

    Hi All, hope you can help. I've inherited a fairly stupid CH setup from the people who "renovated" my house before I bought it, and need to do something about the CH. Its 3 floors - "basement" with bedroom, shower room & access to garden. 1st floor - main living area, kitchen, sitting room...
  24. Midwest

    Smart Thermostat Recomendation

    I'm having some issues in my new property, with the installed Danfoss programmer, Danfoss TP9000 trouble shooting - https://www.electriciansforums.co.uk/threads/danfoss-tp9000-trouble-shooting.168830/ for those curious. When the developer has fixed the fault, I've decided to bin the Danfoss...
  25. happyhippydad

    Understanding the Heatmiser thermostat..

    Morning.. I bought the Heatmiser PRT-N thermostat to replace my standard analog thermostat. My existing thermostat has a PL, SL, N. I believe I should have bought the PRT, not the PRT-N. :oops: From the pictures is it possible to use this thermostat as in the wiring diagram for picture 3...
  26. M

    Connecting a wireless thermostat to a glow worm boiler

    hi all , I’m after some help please , I’ve just had a glow worm boiler installed and wanted to add a wireless thermostat on , I just want to check how it would be wired , currently I just have a switch fuse spur next which directly feeds the boiler . There is a L N E RT ( room thermostat )...
  27. L

    Another HIVE thermostat wiring issues

    Hello All, New Hive thermostat has been installed. When you run the hot tap the boiler kicks in to produce hot water. However when called to heat the rads it will not kick in to produce any heat. I expect it has been wired up incorrectly. From the fused spur I have....... L N E From the...
  28. A

    imersion heater thermostat fault finding

    Hi all, hoping someone can offer some knowledge/experience of immersion heater fault finding. My parents-in-law's imersion heater stopped working, on inspection I found the time switch had failed open. Also the isolation switch neon indicator was dead. The heater itself had a good resistance...
  29. Baker1988

    Thermostat wiring help...............

    Hi i have got a thermostat its a plumb center room thermostat and the instructions are not very clear i have a 3 core and earth at the point to connect it and this is the drawing. I am thinking 1 live 2 neutral and 4 switch live but im honestly not sure
  30. rustynails

    Wireless Programmable Thermostat wiring help

    Hi all, Today I found myself attempting to wire up an ESI ESRTP4RF Wireless programmable room thermostat to an Ideal Standard combi boiler. I believe it is now wired up correctly as the heating is coming on and off when I have it on manual and raise the room temp. I just need to put myself at...
  31. K

    Nest Thermostat wiring issues

    ive fitted a nest thermostat to my CH system, which i believe to be a heat only system, but cannot get it to work off the wireless stat, it works on manual, and when in auto mode i can hear the Nest Heat link relay clicking on and off as i adjust the wireless stat but the heating doesn't come...
  32. C

    HIVE - UT1 programmer and ES1 Thermostat wiring issues

    I have a British Gas installed Worcester 28i boiler with a UT1 programmer and ES1 Thermostat and trying to replace the UT1 and ES1 with Hive. ES1 The wiring for the ES1 is 4 wires Brown, Blue, Black and Green/Yellow. the black and yellow/green wires have red sleeves near the end. (All 4 wires...
  33. F

    Wiring Drayton Wiser thermostat

    Hi there. I'm due to install a Drayton Wiser smart thermostat, replacing my current Tado This is my current wiring for the Tado IMAG0233 - https://ibb.co/jXsQnx This is the faceplate for the Wiser https://image.ibb.co/cVG70H/feature_backplate.jpg The difference is the Tado uses batteries...
  34. S

    Powering up UFH thermostat using 3 pin plug in nearby socket

    I am planning to put underfloor electric heating in one of the rooms with total power of 1100 watt. Can I power up the thermostat and UFH (via thermostat) using the simple 13A plug in the socket? Of course I can hide wires using conduit or push it behind the plaster board. Wondering that would...
  35. S

    HEATER 2000W Control with NEST Thermostat

    Hi I have bought the following OIL-FILLED CONVECTOR HEATER 2000W Acova TAG-200-116-S Wall-Mounted Oil-Filled Convector Heater 2000W | Electric Radiators | Screwfix.com - https://www.screwfix.com/p/acova-tag-200-116-s-wall-mounted-oil-filled-convector-heater-2000w/76782 I want to control...
  36. R

    Wiring in a thermostat

    How do I wire in a Sangamo Choice RSTAT1 mechanical thermostat with mains from a socket to a tubular heater fitted to provide frost protection? Do I have to fit a junction box as well?
  37. N

    Domestic Adding a relay to Thermostat

    Hi forum, I am trying to fit a relay to my boiler and then to a raspberry pi zero. The pi has a humidity and temperature sensor to moderate the heating. This is basically a DIY 'Nest' project. The current setup is an age-old thermostat and analog timer. I've wired my relay with Common...
  38. A

    Nest Thermostat Gen 3 Installation

    Hi, Firstly I'm new to the forum so hello to all... Probably sick of seeing posts such as this but I really do some help on having this installed. I have Procombi A28 boiler, not sure if this a rebadged Vokera boiler but I'm sure someone on here can clarify. Has anyone had any experience of...
  39. S

    Thermostat change - advice

    I currently have a manual thermostat (Picture 1) and I wanna fix a digital one. The letter on the wires are different and I am not sure how to connect the new one properly. Any advice? Thank you
  40. Steve_bcs

    Mains Electrical feed to UFH

    I'm planning to install a U-Heat mat in a small en-suite. Never done one before. The thermostat will be on the adjacent bedroom wall. What is the recommended method of providing the live feed to the thermostat/on off switch unit? From a fused connection unit, switched fused connection unit or a...
Top Bottom