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3 port valve

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  1. D

    3 port valve change 4 to 5 wire.

    I need to change a 3 port valve tomorrow as the valve is screwed and leaking badly. It's a 4 wire potterton but I want to replace with a 5 wire honeywell. Can anyone help with the wiring? Where does the extra wire go????
  2. P

    3 port valve

    Forgive me if this a really stupid question. Went to a call out on Saturday, customer had heating to all rads, but no hot water but the system had no 3 port valve, cylinder was full, but water cold, and primaries on cylinder cold Aswell, should there be a 3 port on this? The cylinder cupboard...
  3. M

    3 Port Valve why?

    Hi, Im new to this great resource and am hoping someone could help. My CH and HW stopped working a few days ago, boiler (Baxi Solo3 PFL 40) just does nothing, the only light on is "boiler on" no clicks or anything. My landlord sent a heating engineer around who just said it needs a 3...
  4. B

    early 3 port valve

    smc jobbie removed today old man recons they were big bucks and totally unviable against a y plan
  5. R

    mid position 3 port valve

    Hi, tried this question on plumbing and no success yet, suppose I should have been on this forum. Have a problem with my mid pos valve. When I call for HW, CH, or both, all works as it should. But from the mid position when I call for CH only, the valve stays where it is, heating water when not...
  6. D

    3 port valve

    Hi I've a indirect vented hot water cylinder, just recently my heating and hot water hasn't been working, what was happening was when I called for heat for my rads the valve springs open but when heating off it doesn't close unless I switch the electric off and then it springs back. I've changed...
  7. B

    Cant get heating only using 3 port valve

    Hi guys, replaced a 3 port valve for a customer. Made sure i put the correct wires in same place. Guy who originally installed system must have new he cocked up as he left some instruction saying that hw has to be on constant all the time for everything to work heres what o know i can get hw...
  8. P

    Vallient VC gb 182 eh and 3 port valve prob

    Boiler will not fire on ch but when I arrived at cust house hot water cylinder was hot so could not test very well managed to get boiler to fire on hot water after running the tap . No room stat Could it be 3 port valve prob women was talking about cost so I need to be carefull about what...
  9. G

    Honeywell 3 port valve clicking

    Anyone got any suggestions why a new honeywell 3 port valve won't settle mid position without constantly moving between micro switches internally, causing a constant clicking every couple of seconds? Hot water only ok, heating only ok. All other external controls giving 230v when required (...
  10. M

    3 port valve sticking open

    Ok so the 3 pot valve must be naffed. Stays in mid position when calling for hot water. But boiler won't fire when calling for just heating. I don't get 240v in wiring centre on stat. But if I put motorised valve in manual I get 240v
  11. T

    Water Leaking Past Honeywell 3 Port Valve

    Hi plumbing people My system is open vented, fully pumped and was installed in 1990. It has a Honeywell 3 port valve stamped F5-9504. When the heating is in use, the hot water gets much hotter than the temperature indicated on the tank thermostat. If I start the system from cold and set the...
  12. M

    3 port valve ?

    Hi Guys, just got a call to look at a Remeha Avanta 18V tomorrow . Homeowners had no hot water or heating for couple days now, boiler is displaying an E4 fault code but the Danfoss HSA3 motor valve is "damp". Just looked up the MI and can't see how an E4 code would tally with a knackered 3 port...
  13. M

    3 port valve need repl i think?

    i have had a plumber in cos my heating packed in about a year ago.. he is was a local guy and had the 3 port valve to bits next to my cylinder in airing cupboard the part he needed is not available or hard to get...but temporary he fitted a clothes peg across it but now i have heating and hot...
  14. S

    3 port valve

    I know that this probably sounds like a stupid question but, If the cylinder is cold and you put the heating and hot water on the programmer at the same time will it prioratise the hot water and open only on hot water or will it immediately move to mid position ? Thanks
  15. R

    hi i'm a newbie - heating scheduler 3 port valve problem

    i get my share of plumbing problems looking after a 1980 house on and off, however i am an optimist by nature. Right now, there is a 3 port valve in my central heating system, with an old Mexico boiler: the boiler just keeps on going and going year after year. the only issue is that the central...
  16. D

    3 port valve

    Hi guys, got a 3 port valve that what shut off the heating unless you turn off the power to it? Do you think I can just replace the head?
  17. R

    3 port valve

    Hi ,when my central heating goes off in the evening the 3 port valve does not close off and ther is a humming and a vibration from even hours after wards. the only way to stop it is to turn off the electric and the valve closes. i turn the electic back on and no noise, no vibration. Its a new...
  18. R

    3 port valve faulty?

    Hi all, Am I unlucky or have I done something wrong, I installed a danfoss 3 port valve on a heating upgrade, but replaced it with a Honeywell one because when I switch on the hot water it was leaking through to the heating circuit. so with the new Honeywell valve , when heating is on by...
  19. W

    3 port valve question

    hi all. i need to change a 3 port valve for a customer which is easy enough but im wondering if anyone knows if there is a like for like swap, would be easier if i didnt have to adjust any pipework as it is very tight behind the cylinder. im thinking honeywell v4073a. picture attached thanks.
  20. S

    3 port valve fault

    Went to a job the other day, hot water would not work independantly of the heating. Old valve was a sunvic one, really old, had a red knob that sits on the top that swiches from hot water to heating/mid position. It was 4 wire, blue, earth, grey and white. I fitted a danfoss 3 port still 4...
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