I tried replacing a basic thermostat (Standard Totaline) with a new
programmable one. I couldn't get it to work so am attempting to
install the old one back before it gets to 112 today in Phoenix!
I don't seem to have power as waiting 10 minutes after flipping air
handler breaker back on, produces no activity on the tstat. Before I
removed it, this tstat worked!
I'm guessing I have some wires mixed up. The wires coming from the
The tstat that was working has these receptors marked on it:
Since there are only 5 wires coming from the wall, but 6 receptors,
one of them was bridged, I do know that. The colors seem to match up,
all except "O", the heat pump. Is it common that this one would be
bridged with another? And if so, which one? Or are there two others
that should be bridged? I hate to try randomly since I don't want to
short anything out when I flip the power back on. I've learned now
that labeling wires properly is smart. Thanks for any help!