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Valliant is a town in McCurtain County, Oklahoma, United States. The population was 754 at the 2010 census.

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  1. D

    Why does water pressure gradulally rise Valliant Ecotec 38

    Hi all, My pressure is stable at 1.5 when the boiler is off, but if I switch it on, the pressure rises as expected, but once switched off it will only drop back down to 1.6. This happens exach time the heating is switched on so eventually it gradually rises to above 2 bar and I have to drain...
  2. S

    Valliant EcoTech High Pressure

    Hello. I am a homeowner and have a Valliant EcoTech 835 (2017). Serviced every year and worked like a treat until about a few months ago when I notified the pressure reading was too high (> 3 bar). My plumber came and did a regular service and told me the boiler is in tip top condition. The...
  3. P

    Valliant eco tec -codeS46

    Have a Valliant Boiler eco 426 with status code S46 - boiler quiet & taking ages to heat & costing more to run. Only noticed when had bill through! It was high despite less usage. If we switch boiler off & on then no error/status codes & works fine. Wondering if a service would sort as the...
  4. Ambienz

    URGENT Valliant Boiler - pls help troubleshoot

    Hi, Have a Valliant Ecotec Plus 637 system boiler that is showing no error codes and S.0 (no demand for heat), but it is not heating. Have checked that it is receiving switched 240V heat demand from controller into PCB, so believe it's just a boiler issue. Boiler was working fine up until...
  5. E

    eco tec plus 831 boiler wont turn heating on - controller is dead

    I cannot turn my heating on. the CM921 controller is dead despite changing the batteries. can i turn the heating on via the boiler directly?
  6. M

    Valliant ecotec plus 415 hot water problem

    Basically, i have a hot water tank up in the loft when its summer the tank gets hot, and i have hot water from the taps. However during colder months i try and turn the water temp on the boiler to the max, i heat it up for 2 hours and it does nothing. However when the heating knob is turned up...
  7. A

    S30 FAULT CODE ON VALLIANT ECOFIT PURE 425

    Can anyone advise how to by pass the room stat to ascertain if its faulty as fault is s30 not calling for heat. Thanks
  8. P

    Is there an easy fix for broken knob on Valliant Ecotec Pro 28?

    The bloomin' heating temperature knob has broken (don't ask me how!) and so we can not adjust or turn on the heating Is there any chance of a replacement and how hard to fit? Its an old model unfortunately See below
  9. M

    Valliant boiler con error

    I have a valliant boiler and for 1 momtj it hasnt been working and has been displaying a con error on the boiler. An engineer bought a new PCB but its still showing this error and i think they may be scamming me. I opened the boiler cover after they left and i can see an unconnected wire Please...
  10. L

    Valliant VRT 350f night / day settings help

    Hello I've recently moved into a house with a Valliant VRT 350f. It is showing night mode (moon symbol) on Auto and a desired temperature of 15 even though it is day and my desired day temperature is 19.5. The date and time were wrong, but I've just managed to set these correctly and assumed...
  11. M

    Valliant ecofit sustain 618 elastic banging noise

    Hi All New here I've got a problem with our brand new ecofit sustain 618 boiler about 6 months old and seems to have developed a banging noise. Below is a link to a youtube video so you can see what it sounds like. I've had the plumbers around and they can't work out what it is its driving us...
  12. S

    "XR Box" Inside Valliant Boiler

    Hi all, I was wondering whether someone could identify the attached device inside a Valliant ecoFIT pure 435. It is showing 32ohms of resistance across the live wires, so it isn't just a junction box.
  13. B

    Valliant Turbomax Plus boiler

    Hi everyone sorry its my 1st post and to start to beg for info straight away but really have problem with boiler, It comes on when its not supposed to, out side of its program in odd times, had 2 different plumbers come to fix it but still not fixed, one plumber changed the gas valve this do...
  14. L

    Valliant condensate issue

    Good morning, Hoping someone can provide some advice... I'm having an issue with my valiant boiler, the condensate pump keeps tripping, I believe the pipe may be blocked (probably frozen but I'm not sure) as when I disconnect the end and drain it I cannot blow through the pipe. The pipe goes...
    • lukewills
    • Thread
    • america condensate issue usa valliant
    • Replies: 8
    • Forum: USA
  15. L

    F20. Valliant boiler problems

    Hi Everyone. I have had a boiler installed in March 2020 (a replacement like for like Valliant boiler). It has cut out twice with F20. Valliant came out and state that I have "All" my rads off so the boiler cut out due to over heating. The thing is that not all my radiators were off, most were...
    • Les L
    • Thread
    • america boiler cut out everyone f20 installed problems replacement twice urgent usa valliant
    • Replies: 9
    • Forum: USA
  16. Q

    Valliant Unvented 300l- Water constantly running through pipes

    I have an unvented pressurized plumbing system (Valliant 300 l). It seems as though the water is constantly running excessively through the pipes from the water tank. It's not coming from the tundish side, i think its coming from the pressurised tank. What can be the cause? How can i verify...
    • query
    • Thread
    • america constantly constantly running pipes running through unvented usa valliant water
    • Replies: 6
    • Forum: USA
  17. S

    Valliant ecotec 637 no water sign on display and radiator flashing

    Hi. i have new installed valliant ecotec 637. The tap button is not showing on the display and the radiator is flashing on the screen. I can press the right button and change all the radiator settings but I am unable to access any of the tap settings as there is nothing on display. Please help!
  18. plumb_know

    Valliant Eco tec combi HE - heating issue

    Hi everyone, I have an issue with Valliant eco tec combi, tenant complaining heating is coming on sometimes when programable wired room stats (danfoss) are up to temperature. Typically when i attend it is always working fine so intermittent fault. I replaced both room stats for first measure...
  19. A

    Glow worm/ valliant he

    30cxi combi. Fires up every time on ch demand. Hot water demand fails. Burner lights but doesn't sence flame and locks out. Fault code f1. Have adjusted gas pressure but no change. I feel mixture is all wrong on full power but fga and gas rate is fine. Maybe fan speed all out? On this boiler...
  20. king of pipes

    Valliant vantage 150

    Just serviced and changed the anode on the above cylinder was a right pig to get out the water is really hard out in the sticks here in Norfolk it should be checked every couple of years and replaced every six £ 55 lid + vat but it should be done and you can see why below . Regards Kop
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