Ty Branaman provides an overview of pressure switch operation and diagnosis. Learn how pressure switches work and how to troubleshoot these critical furnace controls effectively with tips on using test instruments and schematics to assess switch function.
#hvac #heating #furnace #pressureswitch
#hvac #heating #furnace #pressureswitch
The Pressure switches are are pretty cool. It's just it's just a little diaphragm inside. And If you have a pressure difference in one side or the other,, the 80% usually had only one tube on it. So It's super simple.
A 90% A lot of times have two tubes because they're measuring between two locations. It's just measuring the pressure difference between two locations. And It's a cool little part. If The pressure exceeds whatever it's it's set.
point is then it closes contacts or opens the contacts. So A lot of people get, you know,, overwhelmed because they see all these wires and switches in there. But If you break them down, look at it in the wiring schematic, See What When is it open, when is it closed? And Then use some kind of a instrumentation to see is it getting that pressure. So If it's supposed to close at 0.3 inches of water column first,, am I getting point three inches of water column to that? And If I'm not getting point three inches of water column, well,, I don't need to look at my pressure switch.
Why Am I not getting that? It's just like my fuel gauge shows empty. Is There gas in the car or not? I Don't just blame the gauge.
Everyone blames the gauge sometimes 😂 Are you in Nepean ?
No no no the pressure switch closes when the pressure is right too high of pressure will not open the switch.