Gary McCreadie is an HVAC tech, the creator of hvacknowitall.com and the HVAC Know It All Podcast A General Guide To HVAC/R Troubleshooting This is a general guide to HVAC/R troubleshooting.  We won't be getting into specifics that involve local codes, OEM procedures and guidelines or in-depth analysis of things like static…

It was a warm August day, myself and my co-worker were digging into some PM work.  We found one of the Carrier RTUs without power and the breaker tripped.