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honeywell

  1. M

    Honeywell CM927 display issue

    Hi, Does anyone have any ideas regarding whether this is a complete failure of the display? Batteries changed this evening. Long overdue. I've read about display cells failing but this is a case of every single one being ON. Help please
  2. D

    Honeywell Lyric T6 Installation Help

    Hi, I bought a Lyric T6 to replace my old Potterton EP1 programmer. I've done some research into how it should be wired up however, I'm not 100% sure I've got my wiring diagram correct. As it stands with the current Potterton Programmer we have a constant live feed for the hot water (tap...
  3. S

    How to adjust Honeywell V5012 diaphragm

    I live in an apartment with communally heating supply which is fed into a heat exchange unit in my apartment which uses the communal feed to heat hot water for taps and underfloor heating. I have one of these v5012 things fitted which I believe regulates flow between input heated communal feed...
  4. S

    Old Honeywell 4200 3879 001 Room Stat Replacement

    Room stat needs replacing as only clicks in above 25 T'is as old as yonder hills. What could I replace this stat with?! Thank you!
  5. M

    Looking for a Honeywell EvoHome install in North Wales CH7 area

    Hoping someone can help. Have tried all the listed suppliers on the Honeywell website and had no responses. I have most of the system, I just need the Hot Water Kit and the certified install. My house is only 4 years old with good wifi coverage so it should be a fairly easy install. Please...
  6. bashmaystor

    Pick your brain on Honeywell Multiple Heating Zones Wiring

    Hello all I am designing an 4 zone central heating system, which comprises of: - Vaillant Ecotec Plus 637 Zone 1 - Main Unvented Direct Hot Water Cylinder 300l Zone 2 - Garage Rads Zone 3 - House Rads Zone 4 - UFH manifold (Nu-Heat) 2 Channel Programmer for zones 1, 2. 1 Channel Programmer...
  7. cr0ft

    Honeywell 832.3 Timing Diagram

    hi all, I remember from my commercial course that you can use the timing diagram to work out what component his causing the problem when the safety controller locks out. https://www.anglonordic.co.uk/files/3101000%20TF%20830.3%20Control%20Box.pdf How do I convert this timing diagram into...
  8. R

    Honeywell cm907 room thermostat.

    We live in a 2 bedroom detached bungalow with a Vaillant Eco Tec Pro 28 combi and a Honeywell cm907 two wire thermostat. The whole installation is 5 years old, and now the lcd display on the stat is loosing pixels. Having looked on the internet I can see this is a common problem and there are...
  9. J

    Upgrade Heating controls to Honeywell Evohome

    I have an existing heating system and am looking for a heating engineer to upgrade my system to use Honey Evohome controls. I have 4 radiators/towel rails that do not have TRVs and these need to be replaced. There are 13 radiators in all (including those mentioned). There is an un-vented hot...
  10. townfanjon

    Honeywell wireless stat

    Guys , I am sure one of you fine chaps can help me with this .... Honeywell wireless stat . Receiver shows an obvious L and N and the remote unit is connected to A and B , I am pretty sure but dont want to blow a board are A and B just switching and have no mains voltage , could one of you...
  11. Harvest Fields

    Honeywell 240v twin channel programmer

    Has anybody else realised that Honeywell controls are not what they used to be. I have changed 3 timers in the last 2 months all in garages where when the Hot water and Heating is on together the timer just flashes on and off constantly.
  12. moonlight

    Honeywell ST699 Replacement

    Hi All, Just wondering if anyone knew what would be the best replacement programmer for the Honeywell ST699? Other than like for like. My customer has a y plan system. Useful if the back plate matched. I don't want a pack just the programmer. Thanks
  13. C

    Honeywell st699 heating problem

    I have lived in my rented property for about 18 months and recently the heating will come on even though the switch is set to off. I will call landlord to have a look I just wondered if it could be something I'm missing before I ring him for someone to look at it. I've never noticed this...
  14. Last Plumber

    Honeywell MV's Banging

    Anyone had any issues with Honeywell MV's Banging as they open and close? This one in particular is a three port.
  15. M

    Honeywell Evohome with Vaillant boiler

    Can anyone help please? I am a reasonably competent DIYer and have a small project I think I could handle. My central heating controller has failed and I'd like to fit a replacement. The current system is a Honeywell Smartfit low voltage controller which drives a Vaillant Ecoflex Plus boiler...
  16. R

    honeywell 3 port

    sent my customer to screwfix to pick up a new 3 port. when i took it out the box it got me puzzled as there was only 3 wires and not the 5 as normal.. sent him to get another from the merchant with 5 wire and the serial numbers were all the same! whats that all about???????
  17. T

    heat genius/honeywell evohome

    Hiya guys any one fitted either of these control systems?
  18. R

    Honeywell two way diverter valve problem

    Amateur - please go easy with me!!! I am after some advice please. For some time I have been having a problem with my central heating system (unvented) and have now narrowed it down to the diverter valve. Quite often if my hot water is switched on and heating switched off my radiators are hot...
  19. Y

    Honeywell T40 Worcester Highflow 400 thermostat problem

    Hi, Hope someone can help. Had a room thermostat fault develop on a Worcester Highflow 400 electronic boiler. When the boiler is switched on (by the timer) and the room thermostat has reached the required temperature (in other words it is telling the boiler to stop centrally heating) rather...
    • yaryl
    • Thread
    • honeywell thermostat worcester
    • Replies: 7
    • Forum: UK Plumbers Forums
  20. J

    Advice on honeywell evohome setup

    Hello all First post here and after a bit of advice on Honeywell Evohome setup. I was initially looking at the hive and nest, I even ordered a nest but shall be returning it as after looking over the honeywell evohome it just seems the best system for my needs.. Current system: Combi boiler, 1...

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