I had my AC stop working entirely for about 3 hours yesterday.
The stepkids/grandkids were over, and temp started creeping up. My wife and stepson kept messing with the themostat, and eventually, the fan was not blowing at all, even with the setting at "on" not "auto."
I spent 60-90 minutes dicking around with the thermostat and fuse box to no effect. Thermostat was acting like it has turned on the compressor and everything is good. I spent a bit looking up troubleshooting for HVAC, and I went into the crawlspace to see if I could figure out a fix. I found the drainage line for condensation (I think), opened a valve/seal, and the system fired back up in 2-3 seconds. Working fine for 18 hours now, not struggling to maintain 73 on a hot day.
The system got put in about 11 months back, and I am pretty sure capacitor problems and the like aren't a factor, given that the fan was knocked out as well.
Can anyone tell me if my assumption that the drainage got backed up, and I let air into the line, clearing the blockage, has any validity? The sites I was looking at said that systems have breakers/switches that turn the system off if the drainage pan is full. But they all mention having to reset the switch to get the system running again.
My wife thinks I'm a miracle worker, but I am feeling like a clueless putz as usual.