Viessmann Vitodens 100 No Hot water Boiler Service - Viessmann Boiler

Love your videos Allen, keep up the good work mate.

For the novices how do they know which way up for the plate heat exchanger?

Hi Allen
What is the name of the chemicals you use to de-scale

Older versions without condensation were very good products, needs only maintenance, a low procent of repairs. The new versions are crap!

Thanks Allen. It was really helpful as I was going to do a service soon on this boiler and has the same problem. Cheers

Thank you Allen. As always great video and explained well. Cheers

I’ve got 1 that’s doing the same boiler keep cutting out and temps are getting up to 82

That was well worth watching. Always been fascinated by these systems,look forward to the engineer giving the boiler its annual service.

Hello Allen, I am in a similar situation. When I turn on the hot water, it doesn't come out very hot. When the boiler reaches 60 degrees, it stops and does not turn on again until it reaches 25 degrees. The dial is at number 6. I have cleaned the exchanger, I have also cleaned the coil and finally checked and set the expansion vessel to 1 bar. Do you have any idea what it could be? I suspect that the sensor that measures the temperature is measuring more temperature than the real one.

Thank you!

Thanks Allen for sharing your professional experiences in this video, managed to pluck up the courage to tackle the plate heat exchanger on my vitodens 100, got to say being a competent person you made this job basic enough for me, saved me money and got my boiler back up and running!! Showing you channel support and thanks very much well put together video...

Thank you very much very helpful keep up the good work

Can you tell me what resistance I should expect from the seson next to the burner bleeder? Its a high thermostat. It has the 47 numer on the wire plug.

Hi Alan what cleaner did you put in the heat exchange unit
Cheers

I have the veissman 050 , the hot water flow is very slow , but its constant temperature , . no one can seem to figure out whats happening ! ..any ideas ?

Thank you friend😹👋👋👋

Thanks for videos. Saved me a lot of work and money. Went straight to the fault. Heat exchanger out. Cleaned, de scaled, re fitted. 3 hours later. Hot water again.

Nice Allen I do same thing with heat exchanger but use white vinegar whilst having chin wag. If the boiler is on ground floor can you still drain through filling loop? Also I recommision vessels in situ helps with draining etc. I had one last week refilled it to 1 bar shot up so quickly and when heating was on it was so High but there wasn't actually any water inside boiler when I drained it I checked usual hose on expansion vessel but couldn't find blockage etc.

Question sir should the boiler temperature drop when hot water or heating isn't being used? Or should the boiler keep reheating to the set temperature e.g. 65c if set there ?

Does anyone know how to fix an F9 fault on a 12 yr old model. I’ve pressed the flashing reset button and it goes back to show the temp again but after about a minute it goes back to the F9 fault and the reset button flashes red again

thank you for the very informative video where in alberta canada can a oerson get parts

My viessmann keeps throwing an F2 code everyday and I have to keep reseting it to get it to fire up. What could be causing this?

Informative Video Allan, thank you for making it.

Nice Job Allan, looks like you fixed it.

Thanks Alan , I’m a newly qualified gas engineer and your videos have got me out of trouble many times

Copper press on the gas pipe. I wonder if they will ever allow that here in the States! Great video Sir. What would you call that heat exchanger tool?

Would anyone know what size hose is being used, which is attached to the bleed valve to clean the heat exchanger?

What is the main reason for second exchanger being so "dirty"?

Great video. My stopped working yesterday display showing 99 degrees no hot water or heating and the burner symbol doesn't come on, any ideas what that may be ?

It that the same for a wiessmann 050 boiler

I have one of these so a big 👍 up

Brilliant video allen

Just found your videos, great information Thanks👍

Hiya Alan, does this boiler have a drain off point if you don't have a magnetic filter to drain from, I'm gas safe registered but never worked on this boiler b4?? Thanks bud 👍

I can't put my boiler in eco cystem, I don't have the taps in my screen, I try I try put but always I don't be successful
My boiler is the same of the movie

foegot to add your instals are great to, a major factor is eying up prior to taking job on every detail hidden work and a lot of the time say on phone for a breakdown customer they tell youthe faults and on your drive to job u can save time by going to check main obvious faults right away althoughof course there has to be a full inspect repair and recommission of system , look forward to seeing more , i can subscribe if you send me details allen , thank you for making a great start to my day again mate ,

great work allen , your mind must be on ob all the time , your knowledge on practical theory maintenance service worl and breakdown are 2nd to none , brilliant to watch , what do you do in your spare time allen ? ha ha ha i was an lpg fitter engineer , for calor gas covered whole of scotland . great job , doing commercial work industrial domestic and caravan sites covered everything , watching your self takes me back to my days when you just got on with job , in a hundred life time i couldnt have had a more satisfying job and experience over years no one can replace it , brilliant to watch your vids allen keep up great work 1st thing i do when i have a cuppa and shower in morning is put your vids on , im a dedicated fan brilliant mate ,

Thanks Allen love your vids,you have found my problem with boiler, 👍👍👍

So just wanted to thank you for helping me fix our variable hot water upstairs. Downstairs was fine, but upstairs was variable. I cleaned the heat exchanger plate but also topped up the expansion vessel and all is fine now. After her initial doubt (when I flooded the kitchen because I hadn't fully drained it) I now have a happy wife! :)

This video is brilliant Allen.... I have this exact problem, but could you answer this... My problem is the bathroom taps not getting hot but the baffling thing is the downstairs are red hot??? I can see it cutting off when I run the bath and sink taps as in your video but run the hot kitchen tap and it’s blistering hot and doesn’t cut off??? What’s your thoughts?? Thanks in advanced

Brilliant. Very informative.

Love your videos Alan keep up the good work!
My 30kw vitodens 100 has just developed this fault, its 1st fault after 6 years!
My gas engineer just changed the plate heat exchanger for new but since the replacement my hot water flow rate has reduced noticeably at all my outlets. I checked all the service valves and stop tap and everything is fully open. I’m having small problem getting him back due to lockdown shielding.Just wondered is it possible that he’s reduced the flow rate on the boiler somewhere of is it possible that the plate heat exchanger has been fitted wrong,in terms of the wrong way around or up side down? Interested to know your thoughts. All the best

👍👍👍

Hello Alan
I have just had a 111w fitted
The boiler works all ok
However when the burner turns off the boiler temperature display rises by up to 10c above the set point
After a while it reduces
The ch is set to 70c and water to 60c
Any ideas ?

Top vid Allen. Quick question about the expansion thank where you pressurised it. For it to work properly does it need to be pressurised like you did? If so what happens if its not pressurised? Thanks

I have this boiler, this video has been a real eye opener. I had issues with my plate heater fouling up, the installer blamed the rubber pipes, a known issue by all accounts, he cleaned it out and performance was much better. I have since had the boiler serviced regularly by a different company and they do not carry it out as thoroughly as this. I’ll be showing them this video.

I came here as I wanted to learn how to wire a Nest thermostat, which until I get the boiler serviced is pointless installing.

I’m not gas safe so won’t be undertaking any of this myself, even though it looked straight forward.

Very good and educational. Thanks for your time

Another really useful video, Thankyou Allen for all your hard work on these.

Very useful video ....this along with most of your others has gone straight into my saved vids ⭐️⭐️⭐️⭐️⭐️

You are the guru 🧙‍♂️

Hi Allen- ive got a Viessmann V100 WB1C 35kw that needs the pump replacing. Does the whole system have to be drained down to replace a pump, or are there isolating valves? Cheers