I have thoroughly enjoyed this step by step explanation by Roy of how the boiler works including checking the gas valve and testing it and for a new engineer in the industry this is just a God sent, my appreciation to Roy for selflessly sharing his knowledge. I have watced a few videos and this one is up there with the rest. Please do not tire keep them coming. THANKS AGAIN.

These videos are really handy, well worth watching

Love these fault finding videos. Thank you 👌

Great tip for gas valve fault finding!thanks Alan and Roy!looking forward for wiring fault finding. Thanks once again guys!

Thank you Allen and Roy. Another accurate quality video❤

Great video lads 👍

Great video Roy, thanks

Great Video Guys. Keep them coming

Another great informative video
Roy and Allan 👍👍

Loved this one 👏👏👏 brilliant work Roy from viva and Allen 👍

Looking forward to future vids.

Water / air / gas / electric…..didn’t know what wage was before this …..can’t earn a wage without using this format 👍

Cheers Allen ❤

Wonderful video

Great Alan and Roy. Great video, hope to be up with you guys this year for some top training.

Thank you Sirs,  both Roy and Allen, really helpful as always. 100%.

Very informative thank you 🙏

Great. Video.    Top man Roy

Great video, thanks you

Good job thank you.

Good stuff

Once again  another great video keep them coming its priceless m8 top men the pair of you should both be given a knighthood not forgetting mr ideal and the other chap .