Sequence of Operation - Air pressure switch
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- Опубликовано: 10 сен 2024
- Ravenheat's Technical Service and Training Manager, John Wilson, talks through the sequence of gas boilers. This shows how you can identify potential faults on old and new boilers, and make sure you get the right parts to rectify the issue.
Good video, common sense to simplify the problem, it amazing how many people just throw parts at a boiler until it starts to work.
Thanks the best explanation of testing air pressure switches I've come across. Cheers, mate. Please keep the quality content coming 👊
Hopefully I'll fix my boiler now this man has spoken.
Keep the videos coming John.Regards,Rob,RW Gas Services
This guy is awesome keep the vids coming great content very clear
Gold dust knowledge thanks for sharing
I've seen this video over and over brilliant 👏
These guy is the best, I would love to meet him
Top man, clearly explained as per usual 😁
Great video
Perfect for me being a gas plumber apprentice excellent
I like this guy ... straight to the point
Hi John, your explanation on Air Pressure Switch is excellent. I understand that the C (240v) will switch to NO from NC when the fan is running at correct speed (which creates a negative pressure). My question is: what will happen where there is fault and the C is connection to BOTH NC and NO? Once C-NO connection is created, the gas valve will be opened, spark fires, ...
Excellent videos
Excellent stuff John. I had this recently Continuity on C -NC but no power (zero) to the fan from PCB I bridged the main to feed the fan and boiler powered up.. told them needs a new PCB. Gave price they never called back so no idea if it was or not, could it have been anything else. Pump was ok and continuity on flow switch Baxi 105e combi.
Thank you sir !!! Concise !!!
Liking these videos.
Finest British education like + sub
Hi John
Does the PCB of a boiler having 3 wires APS also perform the test in a sequence at APS C to N OPEN just before sending 230volts to Fan in order to prove 'no air' signal back to PCB by sending 230v?
Then if open, PCB sends 230 volts to Fan which creates differential pressure which is ACTUALLY Common to NC At APS
Thanks for this video.
PCB are not bullet proof. Had many boards go with different manufactures. Enjoy your videos though John
NC no wire to it,confusing why NC designed,just for test air pressure switch?
Controversial. But I like it. I think PCBs mostly have to be replaced due to Power Supply quality. In Ireland... disaster.
I'm no expert on this stuff (hence why I'm watching for my own information and education). I have a Potterton Suprima boiler (about 15 years old) and the number one common fault with them is the PCB failing - I believe to with poor quality dry solder joints. So I cant quite buy the 'PCBs are pretty much bullet- proof for all manufacturers' comment. Just saying.
Has yours needed be replaced? You didn't say it has so you read it somewhere which has zero credibility
👍👍👍
Well strange as it may seem, the Ferroli Domina F24 E pressure switch has continuity between C and NO. Thank the Lord... :)