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  1. A

    Viessman vitodens 100 on lpg

    Morning all. Boiler came up with F4 fault code. As per book could be one of half dozen issues! Things I have checked..... Condense is clear... Burner gauze clean..... Ionisation block replaced.... from boiler reset, the fan starts, after a few seconds a distinct click and gas valve opens...
  2. P

    viessmann vitodens 100

    Came across a viessmann vitodens 100 hose coming from pump burst quite a large slit on hose (still in warranty) was just wondering has anyone came across this thanks
  3. L

    Viessmann Vitodens 100 18kw f4 code.

    Hi. I'm having getting this boiler to stay on but keep getting f4 code after a few days. I've changed the electrodes and spark generator. Took and cleaned the boiler. Greased the flap inside the fan. Checked the gas valve is opening to get gas through. Checked if the air pressure is making a...
  4. P

    Viessmann Vitodens boilers

    Evening all, just wondering what everyone's thoughts are on these boilers? Started using them recently haven't had any issues so far :hurray: Jason
  5. M

    Vitodens 222-F feedback

    Greetings attached (Appoligies cant post urls )below is the combi gas condensing boiler that our installer has recommended to me. im after any thoughts and guidance as coming from australia to germany central heating units are not something im overly familiar with. the unit will be servicing a...
  6. bright spark

    Problems with Viessmann vitodens 200-W pcbs

    Don't know if any1 else is having any problems with these. Service a few of these around a few schools, offices etc. one site about 3 years old has 2 of them. First boiler, PCB went faulty in October. Replaced, all fine. The PCB in the other boiler has now gone. Now these are pretty expensive...
  7. C

    Viessmann vitodens 111, tundish

    Hi, I'm new to this forum & have a query. I'm having a viessmann 111 fitted on an internal wall. Need to know if it's okay to use a condensate pump for the tundish?? I've got a sanicondens plus. Was wondering if that's suitable.
  8. S

    Vitodens 100 intermittent heating water and radiators

    Hi everyone, I am at my wits end here. Just moved into my new (10yrs old but new to me) house (and now I am broke :tounge_smile:) and have had intermittent problems with my Vitodens 100 gas boiler. I have a Siemens control unit to set the timer, as well as a thermostat in the hallway - I guess...
  9. bright spark

    Viessmann vitodens 200w WB2C

    Hi lads, called in service 2 of these for a customer. Only 1 working. Timeclock calling for both boilers to work. No fault code on screen, only radiator and pump symbol and boiler water temperature on screen. Checked flow switch and that's recognised that the primary pump is running. Just...
  10. A

    New boiler options - what to buy

    I have been looking at replacing an ageing combination boiler for a while. I wanted to move to a system boiler with a twin coil cylinder. I have decided to get a joule cylinder, partly because I got one for my parents with no issues and partly because they are one of only a handful of...
    • Alex Theochari
    • Thread
    • boiler buy however new boiler oil options system viessmann vitodens
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  11. G

    Viessmann Vitodens 050-W

    Has anyone fit this boiler recently ?? Does it have a wall spacing frame as an extra ?? and does it have an internal filling loop. I have a customer who wants a new boiler, existing is a Baxi Solo. She hates pipework and wants it to an absolute minimum, I can't put the boiler anywhere other...
  12. N

    Viessmann vitodens 100

    Hi, was called out to the above boiler because of an intermittent whine coming from it. This whine only seems to happen on the heating demand, I'm not sure if the diverter isn't opening all the was causing this sort of noise or maybe something is in there? when I close off the iso valves this...
  13. D

    Viessmann 100-W Vitodens with weather comp and opentherm query?

    Hi all, As you probably can tell i don't come on here much but I've come across a couple of teething problems with my new system which i have only just installed. OK here is my set up: Viessmann 100 -W WB1C 19kw system boiler utilizing the 4 pipe system Viessmann unvented cylinder connected to...
    • danny848
    • Thread
    • 100-w controller opentherm query system viessmann vitodens water weather
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  14. P

    viessmann vitodens 200w combi

    Anybody had any trouble with the combustion controller on these boilers? only fitted one prior to this and had no problems, but after around a week after commissioning a fault has appeared"combustion controller" ive checked all possible causes from mi's and reset cleared the fault, was fine for...
  15. S

    Viessmann Vitodens 100-W 16kW Compact Heat Only Boiler + flue BRAND NEW

    alright guys am not for one fitting viessman, I have had this in my unit for 8-10 months brand spanking new boiler (5 YEARS) the box is not the best but still holds the boiler fine, Nothing missing full boiler I am looking to get rid of it cheap as it sat in the garage doing nothing and I just...
    • smtplumbing
    • Thread
    • 100-w boiler brand brand new compact flue heat heat only oil viessmann vitodens
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  16. N

    vitodens 100 wb 1a (system)

    hi all, the above boiler was kettling like made and was not shifting any heat around the circuit (rtn at boiler stone cold) so I was asked by my boss to replace the main HEX and the CH flow and rtn rubber pipe work from the hex which I have done. boiler all up and running but still no heat to...
  17. A

    Vitodens 200 - central heating - upstairs rads hot - downstairs not..

    Hi All, I hope you can help. I have problem with the above boiler. It has always worked fine for the last 2-3 years but now have issue with radiators heating up, been a few months since had CH turned on. hot water heating up fine from the boiler. All upstairs rads seem fine, but downstairs only...
    • allybaba1975
    • Thread
    • central central heating system cold radiator downstairs hot hot rads upstairs vitodens
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  18. A

    Viessmann vitodens 100

    About to fit my 1st Viessmann tomorrow, sprung on me last min by customer. Any tips or anything I should watch out for?
  19. A

    Viessmann 200w Vitodens - RF controller please help

    Hi Everyone we bought a viessmann 200W 35kw vitodens system boiler which is currently being installed in the loft. We bought the Viessmann 100HC2A controller but our installer says that we need an RF one as boiler is in the loft. Viessmann technical say that we need the 100HC2A (or installer...
  20. M

    Viesmann Vitodens 100

    I was called to Viesmann Vitodens 100 today, error code F4 (ignition lockout) Checked all normal items, all checked OK, removed spark electrode & sensing probe they were minging, gave them a good clean still not working correctly. It appears the boiler fires for all of 1 second then straight...
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