Friday, July 29, 2016

Blank thermostat stumped

Hello. Let me preface this with that I'm not very handy when it comes to this type of stuff. I know some basics, but that's it. Any help is greatly appreciated.

Earlier yesterday I was in the attic fiddling around. It's pitch black up there in the evenings and I accidentally flipped off the safety switch to the air handler (marked "furnace".). I thought it was the light switch. The air handler (Carrier) was running prior to and I quickly flipped it back on but the air handler didn't turn back on. I didn't think anything about it until I noticed my house was getting hotter. I go to check the thermostat and it's blank. I tried to reset it, unplug it from the wall, etc. Nothing (no batteries in the thermo). AC had been running ok as of late.

I flipped every breaker in the fuse box (furnace, ac, main, etc.), pulled the cover off the air handler to check the circuit board fuse (purple, marked with an "E", not broken). I went outside and flipped the breaker on the AC unit outside... nothing. Thermostat is a Totaline Model: P474-1050. Think it's toast?

We're in the middle of a heatwave and my face is melting. 100°F+ 90% humidity everyday for the last 2 weeks. HVAC pros are booked up for a few days. Please help. Thanks in advance!

submitted by /u/TigerDiesel45
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