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  1. R

    F22 ecofit sustain vailliant

    Hi I have an ecofit Sustain 835 boiler and I recently removed a radiator to paint behind the skirting and now when I have replaced the radiator I have an error code f22 I know this is the water pressure however I can’t seem to see the valves under the boiler to increase the pressure again I...
    • Raz
    • Thread
    • america ecofit f22 sustain usa vailliant
    • Replies: 3
    • Forum: USA
  2. M

    Vailliant pro 28 condensate

    Hey all. Can this be replaced without drawing and moving parts
  3. M

    Vailliant 824 f64 fault

    Evening all. I have been to change a pump on a vailliant ecotec plus 824 as water was not circulating and the boiler kept cutting out. Also when I opened the pump vent it sprayed straight into my face so couldn't check to see if it was turning. Any way, changed the pump and it started ok but...
  4. king of pipes

    Vailliant eco tec heat omnly on a s plan

    I have a system upgraded in september that has developed a pipework vibration problem its not all the time checked the zone valves seem ok system running at 65 degrees speed 2 on a new Dab evo pump auto bypass fitted , gets quite loud for a short time then quietens down its not a air problem...
  5. J

    Vailliant boiler registration

    Hi All, My first post. This is partly my fault for now keeping tabs on this. Around 3 years ago, I had two boilers installed on two rentals houses. Unbeknown to me the installer did not register either of them. So I contact the installer, he claims he has an issue with the Vaillent portal...
  6. D

    slow pressure loss vailliant turbo max plus

    Hopefully someone can offer best course of action! have slow pressure loss of approx 0.5 bar over 1 week on the title boiler above. Have british gas homecare and they have now visited 3 times without finding cause of problem. first two visits they just re-charged expansion vessel and...
    • domo
    • Thread
    • boiler central heating system plus pressure pressure loss slow turbo vailliant
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  7. M

    Connecting 3rd gen nest to vailliant 838 ecotec plus

    Hi I am new to this and not sure how to put up a pic without it saying denied.I am unsure how to connect the nest heat link to this combi. Any advise would be great
  8. sammathias

    Vailliant ecotec pro 28 low gas rate

    Alright guys, just a quick one. Fitted a vailliant ecotec pro 28 today and upon commissioning the gas rate was slightly lower than 10% of the nominal, which baffled me because ive probably fitted 20 of these boilers and they have all been within range. All of my other checks where fine so i was...
  9. sammathias

    Vailliant ecotec pro 28 LOW GAS RATE.

    Alright guys, just a quick one. Fitted a vailliant ecotec pro 28 today and upon commissioning the gas rate was slightly lower than 10% of the nominal, which baffled me because ive probably fitted 20 of these boilers and they have all been within range. All of my other checks where fine so i...
  10. E

    Vailliant eco tec + 831

    Intermittently locking out displaying fault codes f54 f28 Please advise think I read possibly faulty gas valve somewhere but cant find post again Might go couple of weeks before locking out never witnessed myself and is a holiday let so needs sorting
  11. D

    Vailliant 937

    Hello I installed a new vailliant 937 with the cylinder on the back in the hope- as advertised on Vailliants website of getting 20 litres per minute out of it. When I fired it up I only got 14 litres a minute. I rung them up and they advised me to install a blending valve on the outlet, which...
  12. K

    vailliant ecoTec 937 plus

    Any one had problems with the shunt pump on one of these..... is it fixable or will i have to bite the bullet and fit new one??
  13. P

    CM927 wiring to BRAND NEW Vailliant ecotec plus 831

    Hi guys I know this topic has been covered before but I just want to be 100% sure before I attempt wiring the stat to the boiler. one of my customer has existing Honeywell CM927 wireless stat wired into his current boiler but I have quoted to install a new one which is going to be a new ecotec...
  14. K

    Vailliant EcoTec 637 losing pressure

    Vaillant EcoTec 637 losing pressure Hi there, I really hope someone can help me. We have a Vaillant EcoTec 637 and for several months we have been losing pressure. Initially, we were able to top up the water and the pressure wouldn't drop for a several days. Now, it's less than 24 hours. The...
  15. M

    Vailliant ecoTEC pro 28 pressure on red

    Hello guys! Excuse me about my English! In the following text when I say "open" I mean I turn the valves to let water flow and "close" to stop water flow. After having red light on and not hot water or heating, I saw in some other posts that I should "open" some valves to refill with water...
  16. M

    Baxi or Vailliant?

    Hi I just got a call from a client who needs a boiler installed. BG have offered her a 15kw baxi but she wants a vailliant. heat only they are. Would it be ok to put a 18kw vailliant in instead of the 15kw baxi?
  17. D

    Vailliant ecotec624 system boiler

    I have a fault code f75 on the above boiler. I need to check the water pressure sensor. does anybody know what the resistances should be? cheers guys.
  18. D

    Vailliant turbo max plus 282e flue

    Saw this flue today, looks to me like the first section is actually meant for a vertical flue and is being used on a horizontal flue... Anyone seen this before?
    • dave1
    • Thread
    • attach flue installation plus remember systems turbo vaillant vailliant
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  19. T

    Vailliant mag 125 water heater in static caravan, will not stay alight

    Can anyone suggest how I can clear/check waterway for blockage? I have a MAG125 water heater that runs the pilot OK and when ho****er is demanded, it fires up for just about 1 minute. The gas then shuts down. A local guy has said that the problem is almost certainly lack of water pressure...
  20. Atouchofgas

    Vailliant vu 182/1E

    Hi, having a prob with this chb, when prog on 24hr chb ok in hw/ch. when in time mode chb sometimes goes to lock out and the "egg timer" flashes have replace pressure switch at pump and cleaned tubes but to no avail. Have also checked pump it seems to be ok any advice would be greatful ps...
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