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honeywell

  1. L

    Honeywell ST9400C Programmer

    I’ve successfully installed the programmer and it’s working fine. Unfortunately due to lack of space I can’t access the two small screws on the bottom that secure the unit to the wall plate. It seems secure enough without them but is it ok to leave it without the screws? Thanks. Len
  2. B

    Honeywell motorised valve not working correctly?

    I have a Honeywell value (V4073A1039) which doesn't seem to be operating correctly, basically not opening when using heating and not closing when using water. The issues is shown in this video.....
  3. ian.

    Honeywell VA8200A001 TVR Service Tool Hire

    I need to replace 13 TRVs due to sticking issues, I saw that Honeywell do a tool to remove and exchange the TRV inserts', this will save me draining the system and saving time, anyone know where I could hire one from? Cheers
  4. shankly1985

    Honeywell home heating advice

    Hello In the hallway and a bed room up stairs we have honeywell t6360 thermostats on the wall, the kitchen we have on the wall honeywell st9100s and next to that is the boiler Vaillant ecoTEC Pro 28. Now first question does the downstairs T6360 control upstairs and upstairs controls...
  5. S

    Honeywell Evohome issue

    Hi! I can't seem to get my Evohome heating working as expected and it's starting to become a bit of an issue. I'm sure it's going to be down to something I've misconfigured. Any help much appreciated! Initially, I had a simple setup: I replaced the house thermostat with the relay box and used...
  6. M

    Honeywell vt15 try replacement head?

    Hi guys. Do any of you know where to get just a head replacement for this trv please? Or are there any other heads that will fit? Cheers guys
  7. S

    Easiest upgrade to a wireless Honeywell programmable controller

    One of the temperature buttons has become unresponsive on the wireless controller. I cleaned the pad with switch cleaner, no improvement. I've seen that Wolsley seem do a rebranded version that's cheaper but I quite fancy Hive etc. Will any smart thermostats work with the existing boiler...
  8. D

    Honeywell 2-port valve V4043H & 272848/U - identical?

    Jus hoping for confirmation that these two model numbers are identical in every way? Most adverts show both numbers, but a few have them listed exclusively as one or the other... They are the same? The 272848/U is Normally Closed too? Many thanks.
  9. ShaunCorbs

    Honeywell 2 port valves 22mm

    Anyone got any looking for 6 possible more
  10. S

    Wireless Honeywell T3R with Glowworm Ultimate

    Hi all, I’m not a plumber but looking to change my parents Dial Thermostat & potterton programmer to a Honeywell wireless type . They currently have a Glowworm ultimate boiler and the programmer does the heating & hot water (cylinder) separately once / twice a day or off . I do have a wireless...
  11. Reddwarf4ever

    Honeywell V4073A 3 Port Motorised Valve Wiring question

    Hi i checked the wiring colours are the same from the junction box to the current 3 port valve, as the new one. But although I could turn off the house mains, I would prefer not to, is it easy to tell if the wires are live, using a multimeter, ? Have an isolation switch, but not 100% sure if...
  12. P

    Honeywell st9100 timer problems

    Have Honeywell ST9100a I’ve had to replace the relay on a number of occasions, can anyone point me to a copy of the schematic circuit diagram I can download. Have been told it’s a capacitor that’s at fault but before I change that want to check the circuit. Any help would be appreciated
  13. Meady

    Honeywell 22mm V4043 2 port zone valve for sale

    I have 11 of the above for sale, all are brand new and in the original box. Looking for £40 each posted for them. Cheers 1596736173 10 already sold, just the 1 left now. Cheers
  14. Y

    Honeywell ST9100C heating control advice

    Evening lads and lasses, First post here - hoping someone can help. I’ve got 3 of the above consoles on the wall in the garage just by the boiler. One is a dual control for both heating and hot water, one is for the downstairs under floor heating and the other is labelled ‘pump’ which I think...
  15. L

    Problems with Honeywell Evohome system

    Hi, I’m looking for advice about our Honeywell Evohome system. It has never been quite right & looking at info online I think the BDR91s have been installed too close together. At the moment we have a problem with the hot water connection - on the base unit it is just showing an egg timer rather...
  16. L

    Problems with Honeywell Evohome system.

    Hi, I’m looking for advice about our Honeywell Evohome system. It has never been quite right & looking at info online I think the BDR91s have been installed too close together. At the moment we have a problem with the hot water connection - on the base unit it is just showing an egg timer rather...
  17. D

    Honeywell 2 port motorised valve screeches when shutting off

    Hi all, I have a 2 port motorised valve that screeches when CH shuts off, this has been ok for 6 months. System is a combo boiler operating 2 zones CH & underfloor heating with a safety PR valve. Both valves plumbed correct flow direction, is this classic water hammer from a defective...
  18. P

    Honeywell gas valve shutting off

    Type4600 valve shuts a minute or so after burners ignite. Have tested two thermocouples (existing one and a replacement) and getting 25 mV from each. Is there any additional diagnostic I should consider before sinking cash into new valve?
  19. A

    Honeywell programmer goes on and off

    Hi gents You helped me massively before so I thought I'll give it another go as is Saturday evening and I'm totally stuffed with my Honeywell programmer. The problem is it doesn't stay in just click on and off. Lights off and back on when I try to set it to water heating or central heating...
  20. Bogart

    Honeywell EA122 automatic bleed valve

    Am going to fit an automatic bleed valve to replace the knackered manual one. Reading the Honeywell blurb it says it should be fitted on the positive side. Is there any reason for this? and could I not fit it on the negative side?

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