Finding An Electrical Short Within An HVAC RTU – Fuses Keep Blowing

The electrical short revealed in the video is one that some HVAC techs have trouble locating. It requires one tool, eyes. In worst case scenarios, we can use a megohmmeter to find these shorts, here is an older video using a Supco M500 Because they are at the top of the contactor or line side sometimes it’s difficult to find, that’s why the title, states “hidden electrical short”. Every HVAC/R tech should be aware of this issue.

Check this article on carbon tracking…

Save 8% on your purchase at with promo code knowitall

Check out the HVAC Know It All app

Visit HVAC Know It All on social media



#hvactroubleshooting #blownfuses #carrierrtu