I found this forum while trying to fix up my new house. I think inspections are really useless... Anyway, it's been pretty warm out recently and so I turned on my AC for the first time. Sounded like it started but it ended up just being the blower on the furnace. The AC will run when the contactor is pressed down and the thermostat on Rc/Y is reading 24V. However, I cannot confirm a charge of 24V on the wire as it enters the AC unit. My question is what could be causing this issue? A break in the line? A bad thermostat? How do I diagnose?