I will say karma I do enjoy your videos as a new engineer is help me out greatly. The only thing I will say you make it look so easy because you do all your jobs one-handed where I struggle with two lol. Roll on the next video
I just did this a few weeks ago on a newer Viessmann. I'm not gas safe, but I am a competent engineer and will be getting someone out to do a gas safety check. I used central heating cleaner and left it in the heat exchanger for a few hours, took multiple flushes with hot water and shaking the plate to get it clean. In theory this should never block if there is a magnet filter and inhibitor chemicals in the water right? It would've been nice if you added some inhibitor at the end.
Great video mate. I wouldn't be able to film and work with 1 hand so great work :) If the plate hex seals feel and look smooth and not perished, do you just leave originals in when reinstalling plate hex?
Helpful video! If you find that the air valve on the expansion tank leaks out some water when you go to charge it, is that a problem or a sign of a faulty tank?
a lot of the time its not a fault but condensate from compressed air. viessmann put the valve in a stupid place. like the rest of their boilers' badly designed and piece of shit.
Hi thanks for video. Do you find this PHE blockage on central heating close loop side or cold to hot fresh water side also. Can this unblocking be done on fire main heatexhanger side. does main HE ever get blocked providing there is an inhibitor in the close loop?
So usually the blockage is on the CH side of the plate. I’ve never seen the HW side blocked up So yeah, if the system is really dirty then the main heat exchanger can also get blocked
always on the hot water side here in London. its thew calcium carbonate build-up that stops heat transfer, the harder the water area, the more common this is.
If there is a pin hole and you say the pressure in the boiler will always be going up, would that be when the heating is on or even without the heating being turned on?
Morning great video , have a problem like yours , the thing with my vessmann is that the boiler is not firing on hot water, there is a full flow out of the hot tap , checked the 3 port vale and it is moving freely, could it be a stat or the heat exchanger thanks
good info , = = = however spirit of salts ( Hydrochloric acid** ) = = = = is too harsh for stainless or alloy ( **Thats why they get pin holed ) . Use a regular kettle descaler instead. and flush both direction with water
If it's a soak away drain, that's really not good for the environment, standard drain it's okay, personally I would just fit a new plate and have old plate recycled. Plus it a lot safer, did you hear him cough due to the flumes 😷
It’s a common fault with these boilers its the 2 black rubber pipes that run up the side they corrode and the rubber falls off and blocks up the plate heat exchanger
Worst thing was when you tried to claim on the warranty they would try blame it on old system pipe work saying it needed to be flushed I got wise to it when I’d installed a few new systems new everything and it would happen a few weeks later that’s why I never fit them any more especially when they don’t fix their faults and blame the installer that’s why I stick with Worcester most of the time there customer service is great and they fix there faults if one occurs
Do you have to be gas safe registered to undertake that task?
Gas safe to touch the boiler components my friend. Don’t play with gas if you ain’t gas safe.
Gas safe as soon as you open the combustion chamber!
@@dylanbrandley7888
OK, does that mean the water side of the boiler (& the electronics) can be serviced by non gas safe engineers ?
@@assistantto00730 years ago I became a corgi registered gas engineer, 70% of the people on the course were duffer's!
No gas safe needed as you own the boiler it's your property so do what you like to it
Great vid for anyone wanting to gain confidence in boiler repairs.
Glad you think so Carl 💪
I will say karma I do enjoy your videos as a new engineer is help me out greatly. The only thing I will say you make it look so easy because you do all your jobs one-handed where I struggle with two lol. Roll on the next video
Haha! New vid coming soon 💪
What chemical you have used sir? Thank you for sharing
That is a top in depth video as usual❤
I just did this a few weeks ago on a newer Viessmann. I'm not gas safe, but I am a competent engineer and will be getting someone out to do a gas safety check. I used central heating cleaner and left it in the heat exchanger for a few hours, took multiple flushes with hot water and shaking the plate to get it clean. In theory this should never block if there is a magnet filter and inhibitor chemicals in the water right? It would've been nice if you added some inhibitor at the end.
Some of the things you do whilst holding a camera, sick 👍
😎
Your videos are very good, they are very helpful, especially for new qualified gas engineers like me.
Thank you so much !!!
Great video and yes top marks for one handed work 🏆
Haha thanks!👊
Thank you for a very informative video. What brand of spirit of salts do you use please? Thank you. Very best wishes Clive
I was also looking for what has he used what chemical is this?
Does the heat exchanger self locate pipes to holes?
Iv heard you can use brick cleaner.?
Thank you for your time to share with us . Great job 👏
Thank you!!💪
I watch all Ur videos they are good and top engineer. Can you do one doing right hand blocks and left blocks repairs
Where did you get the spirits of salts? Thanks.
Any plumbing shop should have it
Great video mate. I wouldn't be able to film and work with 1 hand so great work :) If the plate hex seals feel and look smooth and not perished, do you just leave originals in when reinstalling plate hex?
Haha! So I always try to change the seals when I can, but if I don’t have any in the van and they seem to be in good condition then I’ll leave them
Do you do repair work at all? I'm looking for a plumber for my HIU
Helpful video! If you find that the air valve on the expansion tank leaks out some water when you go to charge it, is that a problem or a sign of a faulty tank?
a lot of the time its not a fault but condensate from compressed air. viessmann put the valve in a stupid place. like the rest of their boilers' badly designed and piece of shit.
Any chance we can fit a filter somewhere to stop this blocking mine gets blocked every week even we powerwashed it
What spirit salts do you use ?
Usually use the knock out one
Did you have to use new o rings on the plate heat exchanger
Not sure if he showed whether he cleaned the seals up or replaced them, allways good idea to have replacement seals. & they can fall off !
Will the plate only go in one way? Cheers
Yes mate
What is spirit salts
what is the price of new plate?
I have the problem, will need to buy a new plate, £160 + labour cost, do you work in London
Hi thanks for video. Do you find this PHE blockage on central heating close loop side or cold to hot fresh water side also. Can this unblocking be done on fire main heatexhanger side. does main HE ever get blocked providing there is an inhibitor in the close loop?
So usually the blockage is on the CH side of the plate. I’ve never seen the HW side blocked up
So yeah, if the system is really dirty then the main heat exchanger can also get blocked
always on the hot water side here in London. its thew calcium carbonate build-up that stops heat transfer, the harder the water area, the more common this is.
If there is a pin hole and you say the pressure in the boiler will always be going up, would that be when the heating is on or even without the heating being turned on?
at all times
Would you always replace the 4 o-rings on the manifolds when taking out the plate?
no
What chemical do you use to clean it?
Spirit of salts
Morning great video , have a problem like yours , the thing with my vessmann is that the boiler is not firing on hot water, there is a full flow out of the hot tap , checked the 3 port vale and it is moving freely, could it be a stat or the heat exchanger thanks
not firing, is nothing like the problem in this video!!
the hall sensor
good info , = = = however spirit of salts ( Hydrochloric acid** ) = = = = is too harsh for stainless or alloy ( **Thats why they get pin holed ) . Use a regular kettle descaler instead. and flush both direction with water
Thanks for this. Subscribed 👍🏾
great content i use this method as well 👌👊
Great minds think alike 💪
Great tips
Glad you think so!
Good video 👍
Thanks for the comment! I really appreciate it 👊
Good job. Thank you. That was the soultion for me.
Good video mate shame it was a only a 7 minute one
I didn’t see a filter and the discharge bottle wasn’t primed, apart from that great job.
Nice job mate 👍
Thank you!💪
Name of liquid to clean the exchanger?
Hidrochloric acid HCl
I need to do this on my glow worm the part was only £40 so going to give it ago changing it
Where to get spirits of salts ?
City plumbing
That HCl is evil stuff! Need to be SO careful.
Does anyone what chemicals have been used?
Spirits of salts
@@advancedboilertraining thanks just had a look Selco sells this only a few pounds.
Is it legal to flush that down the drain???
If it's a soak away drain, that's really not good for the environment, standard drain it's okay, personally I would just fit a new plate and have old plate recycled. Plus it a lot safer, did you hear him cough due to the flumes 😷
Smart guy
Thanks top video
a ballfix valve to fill the boiler no checkvalve. i do wonder why the plate was that clogged. not. why am i not surprised..
Nyc Job
Thank you!👊
Where do you buy spirit of salts?
Any plumbing shop should have it in stock
It’s a common fault with these boilers its the 2 black rubber pipes that run up the side they corrode and the rubber falls off and blocks up the plate heat exchanger
terrible design, i would never install or advise to fit a Viessmann. as bad as Baxi
Worst thing was when you tried to claim on the warranty they would try blame it on old system pipe work saying it needed to be flushed I got wise to it when I’d installed a few new systems new everything and it would happen a few weeks later that’s why I never fit them any more especially when they don’t fix their faults and blame the installer that’s why I stick with Worcester most of the time there customer service is great and they fix there faults if one occurs
If you’re doing the shower hoaky coaky replace it don’t bodge it
Spirit of salts will rock the inside of that plate exchanger doesn’t matter how much water you flush through afterwards
After cleaning with HCl you must wash with a baking soda solution
👍🧿👏