Hi all. Changed my TSTAT yesterday and the new one didn't turn on, so I switched back to the old TSTAT and that didn't turn on either. I triple checked and it's wired correctly, but still nothing - TSTAT doesn't turn on. I checked and am getting voltage on the red and white wires. I touch them together and nothing happens. I touch the green and red together to turn on the fan and nothing happens.
I took off the plate to the air handler and I don't see a fuse connected to the transformer, so maybe I shorted the transformer? But if that was the case, wouldn't I not see any voltage on the multimeter when I touched the red and white wire on the TSTAT?
This system uses a c wire and the relay fuses are all good and second zone with a different air handler and TSTAT work. 5 wires total.
Any ideas?
Also, the ecobee came with a device to use if your set up doesn't have a c wire. Could I use this to bypass the transformer, or the transformer gives the air handler power and if that is shorted, nothing will ever work?
Air handler is: heat controller, inc,. 120v. Model AHG36-0A
https://imgur.com/a/c6PM05i
I took off the plate to the air handler and I don't see a fuse connected to the transformer, so maybe I shorted the transformer? But if that was the case, wouldn't I not see any voltage on the multimeter when I touched the red and white wire on the TSTAT?
This system uses a c wire and the relay fuses are all good and second zone with a different air handler and TSTAT work. 5 wires total.
Any ideas?
Also, the ecobee came with a device to use if your set up doesn't have a c wire. Could I use this to bypass the transformer, or the transformer gives the air handler power and if that is shorted, nothing will ever work?
Air handler is: heat controller, inc,. 120v. Model AHG36-0A
https://imgur.com/a/c6PM05i