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Thanks for this video. I have had problems with my heating working intermittently for the last few months. It will work fine for a few days or maybe a week and then the boiler won’t fire when the call for heat is made. If I turn it all off for a couple of days and then start again it will work again for a while. I assumed it was the boiler at fault nd maybe the PCB but then I noticed the hot water on its own works fine, boiler fires no problem and it works as it should. It only seems to be when CH only is selected. I can hear the boiler clicking on and off trying to start so I think it communicates with the room stat, goes to start and then the mid position actuator doesn’t move as it should. Does this sound the likely issue to you because if it was the brass valve then the hot water wouldn’t work either? Thanks.

love what you do. need to know you, I need your help please. where are you based roughly?

Brilliant, had me going round the bend with a Biasi advance 30c combi. Sometimes the CH would work but as I was using a netatamo over the Internet I saw my gas bill plunge to next to nothing with the tenants complaining that the heating was off. I was adamant the heating was on because netatmo told me it was on my smartphone!!

Many thanks for another great video, so thoroughly explained! I was worried why my motorised valve was hot at 6:15 when everything was off, and now I know why (but not really happy about it). Still not fathomed out why my boiler shuts down for 10 mins when the valve changes over from HW to heat🤔

Great explanation, thank you! Helped me find the fault.

Massively underrated video. It's probably one of the best explanations on YT. Really well done.

Thanks for that, I thought it was a stepper motor in there. now I know

thanks for your help i tested my motor its OK . but when its in it will not switch bact to hot water no power too the motor

This is not dhwp

Great video thanks - does the synchron motor normally get hot holding the valve shut?

This is by far one of the best videos that addresses the white elephant in the room…everyone knows about it but don’t actually know what it is for and how it works 🍺🍺🍺

Great vid mate. Thanks

Hi Adam. Great video. I set up my system similar to yours but I used choc box instead of wago wiring centre. If, as you suggested, having 2 zones for heating and one zone for hot water (3 switches in programmer), I presume you would need to use a 3 channel programmer as opposed to 2 channel in your video

Do you recommend the socket and see

Great tutorial Adam, thanks

Great video Adam. Many thanks

Best explanation I've seen thanks

Are these low voltage motors? and how many Volts in the supply leads?

Hi, i was getting no movement or resistance on the spring when all power is off the switch to go from auto and manual is lose, when turn on heating or hot water nothing is moving and boiler not firing up but pump is running. I’m a gas safe plumber just looking for some advice. Thanks

Nice mechanical conzruction. I think the Electronic board of boiler add the signal and it periodically round, when the boiler heats the radiators, and you open a hot water tap. But I want ask some question. What is the heating and what the hot water storage tank heating, the pin out or in? What is the base state for example diverter valve(Ariston), from above, I ask because my old Ariston quadriga heats the radiators too when only hot water is used, and vice versa. It strarted when I turned on the thermostat after 4 months of summer heating break.

You definitely need to make more videos your explanation is spot on mate

Best video on the subject so far. And about half as long as the rest. 👍🏼

Brilliant 👍🏼

Hi adam your videos are extremely useful please keep them comming thankyou 👍

Really enjoyed that video. Excellent .. great explanation. Just subscribed.. Cheers. Mac

You should test at the fused spur then then junction box You don’t know if the earth conductor has come out at the fused spur if so you’re test results would be invalid

I've seen systems where the earth has been used as a switching wire. Just remember the earth wire protects the cable and would cause the circuit breaker to trip if someone cut through the cable.

Nicely explained but i can see one problem, all cables need a earth wire, as the earth wire protects the cable if someone was to cut through the cable or if there was a problem with in the cable.

Adam Carter..... wow how you doing mate, all good by the look of it, take care hope all is well

Please make more vids if you have the time :)

Its really great to have all the components semi isolated and view the sequence of events.

yes first class video, would be awesome if we could get a measurement of the partially rectified DC current going back to the PCB from the electrode.

These videos for Gas Engineers who are just gaining experience are awesome, thanks so much Mr. Carter.

2 awesome !

Fantastic. Best tutorial on you tube.

amazing! I got stuck today trying to determine which wire did what on a three port valve. Thank you so much for the comprehensive and clear explanation.

Just wondering who makes that wiring centre??

Hi thanks for the wideo, When valve 3 port is set to central heating it is all the time a hot motor and there is a soft noise coming from it, It is suppose to be like this ? How do I change to heating water everything is ok

How can I achieve Hot Water priority on an S plan plus system please?

Great Video, very well done. My HE24 packed up and will only try to fire up if left for a good while. It fired up before but when I called for hot water it crashed and gave an L9 code. User manual (I think) is saying thermistor or heat exchanger blockage. Am I missing something?

Excellent video. Thanks for your effort to educate people.

Another wonderful educational video by you Adam. Your videos and your demonstration skill is far better than most existing related videos. Well done.

Great- Simple but an example of an effective and educational video. Well-done

Nice one ☝️

Thanks for that video just fixed mine

great video, our ideal esprit he 35 just packed up today ! fires up for hot water immediateley when taps/shower operated but will not fire for central heating, have hive thermostat calling for heat but boiler display still shows a 0, am thinking pcb has died ?????