roy, thank you so much. You are an incredibly knowledgeable man, and I truly appreciate everything you share. The things we learn from you are amazing. Even after almost 10 years as an engineer, there were so many things you explained that I didn’t know at all.
You’re absolutely right — to become a top engineer, you have to spend a lot of time studying, going deep, and turning every stone. Your experience really shows, and the way you explain things in English is so clear. I understood everything perfectly.
Please keep making more videos. Don’t give up. Your explanations are excellent, and you’re helping so many people. Thank you again, and God bless you.

The resistance check guided me perfectly on to identify a faulty pilot burner solenoid (which I then swapped out avoiding the need to change the entire valve) on my Ideal Classic 350 boiler - thanks guys superb video - you are total life savers!!!

Roy's a great trainer, seems to have a great way of delivering a great lesson 👍Thanks for sharing allen.

More of an installer myself but I've really enjoyed watching these boiler fault videos. You've taught me alot and put it in a way easy to understand!

Just looking at this video again after over 4 years... still the dogs bollocks on components...quality !

One of the most comprehensive and informative pieces of content I have viewed. Thanks a million guys.

Roy is a great trainer on these gas valves, he explained the working process and test to perform to check serviceability and integrity.

Awesome  yet again. Thanks  Alan, Roy taking  the time to do this

Amazed what we forget,.  Alan big thumbs up for u reminding us, and big thumbs up for our kind , who spend time to revise.

Thank you Roy, very informative

Top man Roy excellent video very informative 👍

Awesome stuff Roy and Allen. The more you teach the more you learn, the more you learn the more you teach. Thanks again for sharing, It is definitely caring 😎.

Another great video Allen keep em coming

Great Video as usual guys. Many thanks for putting these together.

Great video, great Channel and two legends 👍👍

Another amazing video guys really helping the transition from installer to breakdown and servicing!

Thank you for your time and effort in making this video.

Thank you for sharing Allen. Great advice.

Really helpful! I find having this level of technical knowledge about individual boiler components makes everything easier, especially when diagnosing faults. Thanks for another great video.

Another excellent video guys. Keep them coming Very informative. cheers