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Jehan Vaillant (fl. 1360–1390; also spelled Johannes Vayllant) was a French music composer and theorist. He is named immediately after Guillaume de Machaut by the Règles de la seconde rhétorique, which describes him as a "master … who had a school of music in Paris". Besides five (possibly six) pieces of music surviving to his name, he was also the author of a treatise on tuning. With Grimace and F. Andrieu, Vaillant was part of the post-Machaut generation whose music shows few distinctly ars subtilior features, leading scholars to recognize Vaillant's work as closer to the ars nova style of Machaut.

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  1. K

    Vaillant ecotec 937 noise

    Hello all, My 1st post, here goes My boiler has developed a funny noise that can only be described as like when you finish a drink through a straw and suck up the last bit from the bottom.. that noise? The noise is coming from underneath the boiler and only does this when the hot water tap is...
    • Kitch78
    • Thread
    • america ecotec noise usa vaillant
    • Replies: 0
    • Forum: USA
  2. G

    Vaillant condensate into washing machine stand pipe

    hi, i have a 40mm boss connection at the top of a horizontal soil stack that runs in the room. I'm intending to put a washing machine stand pipe at the end of this. I also have a Vaillant ecotec pro 28 boiler next to where the washing machine will sit and was hoping to get the GSR to reroute...
    • green4rrow
    • Thread
    • america condensate machine pipe stand usa vaillant washing washing machine
    • Replies: 7
    • Forum: USA
  3. B

    Servicing for Arotherm Vaillant 15KW Air Source Heat Pump (ASHP)

    Moved into a new property around 4 years ago with full 15Kw Vaillant Arotherm ASHP setup, after quite a few initial teething problems seems to run well over last couple of years. Long term just wondering if anyone can advise on servicing (in Berkshire area). Are there any independent specialist...
    • Bentley20
    • Thread
    • air ashp heat heat pump pump servicing source vaillant
    • Replies: 2
    • Forum: Renewables
  4. R

    Vaillant Eco Tec Pro 28 fault.

    Over the last couple of weeks my boiler has started to throw the occasional S.54 and F.64 codes. I know when its happened because the hot taps run cold. The whole system is 8 years old and has been serviced every other year. Normal service is resumed by pressing the reset button. The question is...
    • RayW
    • Thread
    • america eco fault pro pro 28 usa vaillant
    • Replies: 2
    • Forum: USA
  5. C

    Vaillant ecotec pressure dropping

    Hi folks, hopefully someone can help as this problem is doing my head in. Sorry for the long story but just want to fill in on what’s going on. Father in-laws boiler was dropping pressure with no sign of leaks on system. I checked expansion vessel and it had lost charge so must’ve been...
  6. G

    Vaillant ecoTEC plus 618.

    I have a become aware that the boiler seems to be cycling. I have 2 zones with a programmer in the hall and one on the landing. Once the desired temperature has been reached I have noticed on the boiler panel, that when the temp drops to about 45C the boiler fires up and then when it gets to...
  7. G

    Vaillant EcoTec Plus

    Hi Everyone. I am hoping that someone could help me with a problem I have with a Vaillant Eco Tec Plus, that was fitted last year in March. When it was first fitted I noticed that it took more than 30 minutes for our radiators, to get warm, our old boiler would heat it in about 10 minutes. I...
  8. J

    Vaillant eco tec 28 f28

    Hello hope someone can help. So this morning woke up to a f28 on my Vaillant eco tec pro 28.so did the usual things checked standing pressure and working pressure by three rings on the hob all good.just to be safe called cadent to check the regulator to make sure nothing was wrong on that side...
  9. Z

    Will a Vaillant 150 Timeswitch fit and older Ecotec?

    I've got an older Vaillant Ecotec combi with a 130 Timeswitch that's broken, can the newer 150 timeswitch be used on it rather than paying over the odds for a 130? I know you can put the pins in a couple of different positions but can't remember if it fits the older ones or not. Thanks in advance
  10. kenjiru

    Thermostat for Vaillant ecoCOMPACT

    Hello guys, I have a Vaillant ecoCOMPACT VSC 206/4-5 90 boiler with an multiMATIC 700 module already installed. I've recently converted the house from radiator heating to under floor heating. What's the best solution to add a wireless thermostat to it? I've looked at the following solutions...
  11. D

    Vaillant TURBOmax VUW boiler making "cracking" sound

    We started renting a house nine months ago. The house is just over 20 years old and has a Vaillant TURBOmax VUW boiler. The boiler seems quite old so may have been installed with the house? It's regularly serviced but, as of two weeks ago, it started making a "cracking" sound most of the time...
    • Deleted member 112128
    • Thread
    • boiler making sound turbomax vaillant
    • Replies: 2
    • Forum: Central Heating Forum
  12. K

    Vaillant ecotect pro 28 boiler droning noise - video

    recently the boiler has started the noise as in the videos. No idea where to start from. The boiler is used rarely, but for a while the top up valves where open which meant the pressure was always high when the boiler was on, this was fixed but the has started a while after the valve was turned...
  13. 5

    Vaillant 838 operations

    Fitted a Vaillant 838 Eco Tech plus combination boiler to a property 6 weeks ago. all fine. Customer called in to say that the boiler had locked out on F54 and F28. Reset did it again a few hours later, then been fine since. I attended today to check a few thing:- 1. Gas pressure at the meter...
  14. P

    Vaillant boiler noise

    Got a vaillant ecotec boiler and it makes an awful noise sometimes which stops when the hot water tap is turned on, boiler is fully serviced and clean, couldn’t get it to replicate for the last service so the engineer couldn’t find anything wrong!
  15. F

    Mysterious loss of pressure on Vaillant EcoPro?

    Can anyone offer any advice on a total mystery pressure loss on a Vaillant Eco Pro 28 combi boiler? Here's the background: Almost total pressure loss every 1-2 hours. Apparently the equivalent of several pints of water each time When pressure is up, heating and hot water functioning fine, so...
  16. J

    Vaillant Ecotec plus 824

    Hi Hope someone could help me on this. i have a Vaillant Ecotec plus 824 boiler. i have leak ( see attached picture) please some let me know what part it is and could it repairable? Thanks in advance
  17. J

    Vaillant Vsmart v Vrc700

    My old Vaillant wireless thermostat is absolute rubbish so its time to upgrade. I just require a reliable wireless thermostat for a standard Ecotec + 831 combi boiler. I do not need any wireless radiator themostats etc so I assume I just need one zone. I like the idea of having control via an...
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