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Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance materials and technologies (PMT), and safety and productivity solutions (SPS).Honeywell is a Fortune 100 company, ranked 94th in 2021. The corporation in 2020 had a global workforce of approximately 103,000 employees, down from 113,000 in 2019. The current chairman and chief executive officer (CEO) is Darius Adamczyk.The corporation's current name, Honeywell International Inc., is a product of the merger of Honeywell Inc. and AlliedSignal in 1999. The corporation headquarters were consolidated with AlliedSignal's headquarters in Morristown, New Jersey; however, the combined company chose the name "Honeywell" because of the considerable brand recognition. Honeywell was a component of the Dow Jones Industrial Average index from 1999 to 2008. Prior to 1999, its corporate predecessors were included dating back to 1925, including early entrants in the computing and thermostat industries.In 2020, Honeywell rejoined the Dow Jones Industrial Average index and the following year moved its stock listing from the New York Stock Exchange to the Nasdaq.

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  1. samwardill

    Honeywell Evohome with 2 zone heating

    Is there any advice on using Honeywell Evohome with 2 zone heating. Honeywell support are pretty useless and give conflicting advice. They suggested I ask my installer (but my installer suggested I ask Honeywell). I found a support article on the Honeywell Resideo website by Googling...
  2. M

    Honeywell ST6400C programmer Honeywell T6360B1028 Room thermostat fix

    I have a Honeywell 7 Day Electronic 2 Channel Programmer ST6400C programmer and a Honeywell T6360B1028 Room thermostat . My programming is on the on position. I turn my thermostat off. But it turns on after 10 mins . How do I fix this?
  3. S

    Changing Danfoss HPA2 for Honeywell

    I have a Danfoss 2-port valve model HPA2 (which has suspect motor issue) I can get Honeywell 2-port valves & motors much cheaper & easier as local Trade place stocks Honeywell. Is there a direct equivalent Honeywell motor activator? ....... so I could just swap the synchronous motor over ? or...
  4. I

    Honeywell Evohome hot water control for new boiler

    Looking for a quick bit of advice since I'm trying to wrap my head around what work I need done. Right now I have an old conventional boiler that heats my hot water tank. The water tank has manual open/shut valve so that I can only heat the water tank and not the heating. I'm replacing this...
  5. A

    Honeywell v Alternative

    Hi, I am having to replace the powerhead of a Honeywell 22mm Motorised valve, model is a Honeywell V4043H1056 (272848) it is not that expensive retailing at approx £72 but Corgi do one for £42, is the Honeywell worth the money, the one I have has lasted less than 10 years! Thanks Andy
  6. D

    Honeywell T6360 Thermostat

    Hi I have changed my Honeywell T6360 thermostat to a Salus T105RF wireless thermostat. There was three wires going to the original honeywell thermostat. One of these being the supply and another going to the boiler. I wasn't sure what the other wire was and so didn't connect up. Now the Salus...
  7. M

    boiler will not communicate with reciever

    . ideal logic plus c30 , hot water fine boiler wont communicate with reciever honeywell stat sends signal reciever turns on ,will not fire boiler up
  8. M

    Honeywell Evohome with Worcester Bosch Greenstar System Boiler

    I need a little help if possible as I am trying to check that my current system is running efficiently but not really sure how to check, sorry if this is a long one and I have tried to contact a Honeywell connected specialist but they dont seem interested unless installing a new system and the...
  9. J

    Honeywell CM61 'Smart' Replacement

    Honeywell CM61 'Smart' Replacement - Hi am looking to replace my old CM61 with a smart version, any advice?
  10. samwardill

    Use of microswitch on Honeywell 2-port valve for auxilliary pump

    My boiler struggled to circulate throughout my house so my heating engineer installed an auxilliary pump a few years ago. On a recent service he identified that the auxilliary pump was not working. He said that it was down to the motorised valve and he wants to charge £350 to replace it. He said...
  11. Stiltz

    Honeywell Controls Fault?

    Hello everyone! Since the cold weather started I’ve noticed that the Programer (Honeywell ST9420C) isn’t working properly. It doesn’t turn on/off in the auto pre set times in the C/H mode. It works correctly in the auto pre set times in the H/W mode. The C/H is effectively on constantly...
  12. P

    Replace ancient Honeywell mechanical thermostat with a Honeywell T3R

    I would like to replace my ancient Honeywell mechanical thermostat with a Honeywell T3R PROGRAMMABLE THERMOSTAT I have three wires in the old thermostat. Please see the first three photos. 1 Red 3 Yellow 2 Blue are these 1 Live 3 Live return (Switched) 2 Neutral Could I configure it as in...
  13. H

    Honeywell TRV low temperature

    Hi. I have all the rads in the house controlled with wireless Honeywell TRVs. This was done by an installer about 2 yrs ago. The kitchen TRVs are not working properly. The app says the kitchen is only 5 degrees as per the TRV, but the room is definitely warm and as a result, the rads seem to be...
  14. T

    New pressurised Cylinder, heat sensor not shutting off, RF3 pack

    Hello Just had a new pressurised cylinder fitted, the old vented one was operated by a Honeywell RF2 (3 pack) and functioned normally. Having the new cylinder fitted the sensor CS92A had to have the touch sensor changed from the flat type to the push in type. The heat is set for 60c, however it...
  15. JamieP83

    Honeywell Evohome Viessmann Vitodens 222-F -- help

    hey all, Based in South England, UK. Hope this is the correct place to ask and that ive added all the required info/images. I had an old boiler that was setup with my evohome system, 12 zones in my house, with controls on each radiator - all worked well. Honeywell THR99C3112 Evotouch...
  16. Ronjazzer

    Honeywell ST 699 Programmer Unit malfunction

    I have an ST699 control unit on my central heating system (some 15 years old) which has developed a strange fault. After running normally, when the required room temperature is reached it cuts out as usual but immediately loses electrical power, with both the time display and the red lights...
  17. P

    Honeywell evohome BDR91 problem

    Hello, I have just installed the Evohome system hot water kit . I now have 2 x BDR91 relays. One is commented to the electric supple to the gas boiler and the other controls the hot water valve. I have 8 x HR92's all connected and communicating fine with the Evotouch Controller. However I...
  18. M

    Honeywell ST6400C clicking and flashing

    Honeywell ST6400C Hi, my Honeywell timer is flashing and clicking when both water and heating switched to auto or on together. And nothing works. Works if one or the other on. Believe 3 port on way out, makes a racket changing over. I’ve ordered one and changing over tomorrow. Just want to...
  19. N

    honeywell y6630d1007 alternative

    Hello looking for a replacement for honeywell y6630d1007. Ideally something that can be controlled by smart phone. Any recommendations
  20. L

    Honeywell timer wireless

    hello I have a Worcester greenstar 18Ri with a Honeywell st6400c timer next to the boiler and a dial thermostat down stairs. it is a system boiler not a combi and has a separate hot water tank. I'm looking to find out if I can replace my Honeywell timer st6400c for a Honeywell sundial RF2 pack 3...
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