Blocked Plate Heat Exchanger (Sludge) | No Hot Water | How To Unblock

Blocked Plate Heat Exchanger (Sludge) | No Hot Water | How To Unblock | Viessmann Boiler

Рет қаралды 46,015

Жыл бұрын

These resources will teach you how to diagnose and fix any boiler: signup.advancedboilertraining...
In this video I show how to unblock a plate heat exchanger on a Viessman combi boiler. A sign you will need to do this is when the hot water keeps going from hot to cold but the heating (radiators) work fine.
Over time sludge builds up in the plate and causes the boiler to overheat as the water can not circulate properly due to it being blocked.
Tools used in this video:
Draper Screwdriver Roll/Set: amzn.to/3Xmh6Zz
Bahco Adjustable Spanner: amzn.to/3lupI3c

Пікірлер: 73

@assistantto007 Жыл бұрын

Do you have to be gas safe registered to undertake that task?

@GasTraining Жыл бұрын

Gas safe to touch the boiler components my friend. Don’t play with gas if you ain’t gas safe.

@dylanbrandley7888 Жыл бұрын

Gas safe as soon as you open the combustion chamber!

@assistantto007 Жыл бұрын

@@dylanbrandley7888 OK, does that mean the water side of the boiler (& the electronics) can be serviced by non gas safe engineers ?

@ranat5526 8 ай бұрын

@@assistantto00730 years ago I became a corgi registered gas engineer, 70% of the people on the course were duffer's!

@500bht 7 ай бұрын

No gas safe needed as you own the boiler it's your property so do what you like to it

@user-li8gr8ur8l 3 ай бұрын

That is a top in depth video as usual❤

@marcush6139 Жыл бұрын

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

@advancedboilertraining Жыл бұрын

Haha! New vid coming soon 💪

@rm-mastering Жыл бұрын

Great video and yes top marks for one handed work 🏆

@advancedboilertraining Жыл бұрын

Haha thanks!👊

@abdulaziz-pb5ni Жыл бұрын

I watch all Ur videos they are good and top engineer. Can you do one doing right hand blocks and left blocks repairs

@thebigblackguy Жыл бұрын

Thanks for this. Subscribed 👍🏾

@Carl-re6zb Жыл бұрын

Great vid for anyone wanting to gain confidence in boiler repairs.

@advancedboilertraining Жыл бұрын

Glad you think so Carl 💪

@cliverice5651 Ай бұрын

Thank you for a very informative video. What brand of spirit of salts do you use please? Thank you. Very best wishes Clive

@muhammadAli-kd2zp Жыл бұрын

Thank you for your time to share with us . Great job 👏

@advancedboilertraining Жыл бұрын

Thank you!!💪

@dylanbrandley7888 Жыл бұрын

Some of the things you do whilst holding a camera, sick 👍

@advancedboilertraining Жыл бұрын

😎

@sharazali-tabassam3033 Жыл бұрын

Good video 👍

@advancedboilertraining Жыл бұрын

Thanks for the comment! I really appreciate it 👊

@nipperh2o925 Жыл бұрын

Great tips

@advancedboilertraining Жыл бұрын

Glad you think so!

@user-yr7re1fd6i 6 ай бұрын

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?

@mikegallagher2107 Жыл бұрын

great content i use this method as well 👌👊

@advancedboilertraining Жыл бұрын

Great minds think alike 💪

@trevjones4564 10 ай бұрын

Thanks top video

@andrewhull6776 8 ай бұрын

Smart guy

@kovacstamas7332 7 ай бұрын

Good job. Thank you. That was the soultion for me.

@ozwellalford5015 Жыл бұрын

Nyc Job

@advancedboilertraining Жыл бұрын

Thank you!👊

@jockster5525 Жыл бұрын

Nice job mate 👍

@advancedboilertraining Жыл бұрын

Thank you!💪

@raj080288 3 ай бұрын

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?

@alihapali 2 ай бұрын

Any chance we can fit a filter somewhere to stop this blocking mine gets blocked every week even we powerwashed it

@rickd6421 Жыл бұрын

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?

@advancedboilertraining Жыл бұрын

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

@karlsanderson8127 2 ай бұрын

I need to do this on my glow worm the part was only £40 so going to give it ago changing it

@ronalynaguipo9666 Ай бұрын

What chemical you have used sir? Thank you for sharing

@jorgetristany 4 ай бұрын

Name of liquid to clean the exchanger?

@madmaycon2531 5 ай бұрын

Your videos are very good, they are very helpful, especially for new qualified gas engineers like me. Thank you so much !!!

@msangwan7 Жыл бұрын

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?

@advancedboilertraining Жыл бұрын

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

@christophersherratt7299 5 ай бұрын

What is spirit salts

@andrejrockshox 8 ай бұрын

what is the price of new plate?

@damiebgibbons5710 8 ай бұрын

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

@Dee-iy4ot 4 ай бұрын

not firing, is nothing like the problem in this video!!

Ай бұрын

Iv heard you can use brick cleaner.?

@Dee-iy4ot 4 ай бұрын

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

@mcDarkD 23 күн бұрын

a ballfix valve to fill the boiler no checkvalve. i do wonder why the plate was that clogged. not. why am i not surprised..

@shafiqmustafa2777 4 ай бұрын

I have the problem, will need to buy a new plate, £160 + labour cost, do you work in London

@juniorjassal1995 10 ай бұрын

Would you always replace the 4 o-rings on the manifolds when taking out the plate?

@Dee-iy4ot 4 ай бұрын

@bluedwarf8858 Жыл бұрын

Did you have to use new o rings on the plate heat exchanger

@kevinschoales844 Жыл бұрын

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 !

@joshd790 Жыл бұрын

Good video mate shame it was a only a 7 minute one

@davebayliss3142 4 ай бұрын

Spirit of salts will rock the inside of that plate exchanger doesn’t matter how much water you flush through afterwards

@tomdutton4673 Жыл бұрын

What spirit salts do you use ?

@advancedboilertraining Жыл бұрын

Usually use the knock out one

@richardhodgson7443 Жыл бұрын

Will the plate only go in one way? Cheers

@kevinschoales844 Жыл бұрын

Yes mate

@DaveInBridport Жыл бұрын

That HCl is evil stuff! Need to be SO careful.

@vladimird3575 8 ай бұрын

What chemical do you use to clean it?

@GasTraining 8 ай бұрын

Spirit of salts

@cippollino83 Жыл бұрын

Where do you buy spirit of salts?

@advancedboilertraining Жыл бұрын

Any plumbing shop should have it in stock

@mehmetmetin8783 4 ай бұрын

👍🧿👏

@marcjohndavies8244 Ай бұрын

Is it legal to flush that down the drain???

@kirren7255 Ай бұрын

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 😷

@maddawglodbrock1380 15 күн бұрын

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