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  1. S

    Potterton 80el Overheat stat keeps tripping

    Hi Guys, Have a customer who has a Potterton 80el and when running heating after a few hours the red overheat stat button at the bottom of the boiler pushes out and boiler wont fire up. Customer has said if they reset the button they heating could work for a few hours or for the whole day...
  2. stings27

    Viessmann rf stat problem

    Hi all. Recently moved house and have a viesssmann vitotrol 100 UTD-RF stat. I have looked thro the operating instructions and to be honest, it might as well have been written in Chinese. Can anyone tell me if you can completely reset it so as I can put my own program in it ? (P3) When you...
  3. D

    New room stat not firing up boiler

    Morning all, hope I can get some help here without calling out an engineer again. Long story short, we had an old RF mechanical clock-type stat for our Ideal Logic Combi 24 .. clock broke so we had it replaced by an engineer with a Salus RT520RF. Not the best make but seems a pro can get it...
  4. M

    Stat stays off too long

    I have a WB 30i system boiler with a Honeywell programmable roomstat in the hallway and a cylinder stat. With a new double glazed porch, cavity wall insulation and topped-up loft-felt the house must has a high efficiency rating. But….we now live in the ‘Sunroom’ off the hallway and this has DG...
  5. J

    frost stat - how long should it run for?

    Just checking my understanding of frost stats.. My customer has a boiler in a garage (12year old Vaillant/British Gas boiler on an unvented system), with an external frost stat wired in (not a pipe stat, but a 'room stat' from 0 to 10c). If the ambient temperature drops below the set point...
  6. S

    Wanted, someone to fit cylinder stat in Conwy

    Hi, Our new house has no thermostat on the cylinder so our water is scalding hot all the time. Anyone interested in this little job?
  7. awkwardcustomer

    Potential systems without a room stat

    I would love some phrases or sentences from an expert to describe central heating boiler configurations with just feedback from TRVs (no room stat in the design). If there are some configurations, manufacturers or combinations which work better for TRV-only it would be great to hear those...
  8. R

    3 wires from cylinder stat to programmer wiring help with pics

    Hi Just had a new boiler system and smart programmer fitted (salus IT500) Plumber wasn't to sure if the stat was wired correctly as he wasn't clued up on smart programmers . Everything works fine on the new system apart from when it calls for heat it don't like it and I have to put it on...
  9. Stants

    Worcester Bosch 27i system boiler on when off on nest stat

    Hi I've just had a Worcester bosch 27i system boiler fitted on an unvented system I'm very happy with it great install but I've just happened to see it was on , so I checked the stat ( nest ) and hot water was not due on and no heating on either I did notice however that although the heating...
    • Stants
    • Thread
    • boiler bosch stat system worcester worcester bosch
    • Replies: 2
    • Forum: Boilers
  10. M

    Wiring open therm stat

    When wiring in an open therm stat. Swapping a boiler and swapping the wired stat on the wall, Honeywell one. For an open therm one. I know you take two wires I believe from the supply to the boiler to the open therm connections in the boiler. Ideal instinct. Am I right in saying open therm is...
  11. M

    Combi boiler stat not turning off heating

    If the stat is not shutting off a combi boiler (analogue stat Honeywell) even though the stat is clicking when turned up above the room temperature. What are the likely causes. Unless it's never been wired right from the start up. Thanks.
    • Matt0029
    • Thread
    • boiler combi combi boiler heating stat
    • Replies: 33
    • Forum: Boilers
  12. L

    Rooom stat help

    Hello I am hoping that some can help me !! I am trying to replace a room thermostat (as photos below) room stat only works at 30oC (it’s so old they don’t sell them any more) I have bought two room stats today and I have wire them in but it keeps blowing the fuse (3amp) And suggestions why this...
  13. C

    Ideal logic plus and halo room stat, check serial number first

    morning as told by my local ideal rep if the boiler has a serial number earlier that AFQ meaning it was manufactured on June 2019 or before you will be unable to use/bind the new Halo combi stat
  14. F

    Stop frost stat kicking in?

    We have a 15 year old boiler situated in a poorly insulated garage (fixed to the same wall as our bedroom). When it’s 5c outside (16c in house) it’s about the same in the garage and the frost stat kicks in. Twice a night we get the woken by the boiler coming on, the pump working and the pipes...
  15. K

    Help!? Replacing Old Sunvic stat w Nest Learning Thermostat 3rd Gen - Heat only system

    Evening all, Apologies if this has been covered in another thread - I've never called upon a forum before! 😬 We're in the process of upgrading our old heat only boiler with a new Ideal Logic heat only boiler. So, feels like an opportune time to upgrade our ancient (albeit reliable) Sunvic...
  16. king of pipes

    Simplest programmable stat for the over 70's

    Opinions please ladies and gentlemen I have a elderly couple who how can I say it ? are being rather challenging to please needs to be RF Regards kop
  17. C

    Salus stat not working

    Hi, I have a main eco elite boiler and a salus stat connected to it. We haven't had the heating on for a while but went to turn it on and we have no heating! Boiler isn't firing up for heating at all. Looked at the stat and it's off, we've changed the batteries reset it done pretty much...
  18. H

    What room stat do I need for boiler

    Hi all , I have a caravan with a valiant eco tech pro and I want to add a simple room stat as the boiler has a timer , can you recommend one please . howy
    • howy1
    • Thread
    • boiler room stat
    • Replies: 10
    • Forum: Boilers
  19. C

    Unvented immersion stat playing up

    I’ve got a stelflow 250L with 2 immersions fed by a change over stat so when top is hot bottom starts heating. anyway the bottom stat recently tripped so I reset it. All was well but today it’s playing up again. I can hear it click if I mess with the casing. it’s a cotherm TSE. I’m going to...
  20. H

    Bye-Directional Electronic Rad/Stat Valve Installation

    Is there an optimum position for them on a radiator - meaning position them on the Flow or Return side. I mean by this - is there a technical argument - If you have a choice (new installation) to say that mounting an Electronic TRV ( more sensitive) on the return side is better due to the...
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