O/B terminal on new thermostat

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O/B terminal on new thermostat

Postby kshaly » Fri Jun 15, 2012 10:50 pm

Greetings, i will try to make my question as simple as possible, HaHa. I'm replacing a Totaline P286-1400 with a new White-Rodgers 1F95-1291. Not an expert at all. I matched wire for wire when replacing. When i ran the new White Rodgers everything sort of worked fine, but the heat would NOT turn off.(All of my research just told me that there was a short somewhere, or 2 wires were touching?) I dont think this was true. Tried many things, read many things, and ended up disconnecting the wire from the O/B terminal. Now everything seems to be working OK. My question is - Since i just replaced wire-for-wire, why would my older Totaline have a wire to the O/B terminal in the first place if i do NOT have a heat pump???? I only have a furnace and AC unit. Any suggestions on why my heat did not turn off? or should i just leave well enough alone since it "appears" i fixed the problem? Without a heat pump, is there any other reason a wire would be going to the O/B terminal? Thanks for any help
kshaly
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- O/B terminal on new thermostat

Postby kshaly » Sun Jun 17, 2012 12:56 am

Thanks theduke03. Sorry bout this idiotic question, but my new White Rodgers does not have just a "W" terminal. It has a "W2" terminal which i am already using (Furnace). Though there is a "W/E" terminal. Shall i use this? The Totaline had a "OB/W" terminal that this wire was connected to, while the White Rodgers has separate "O/B" and "W/E" terminals? For some reason, every time i connect the wire back to the "O/B" terminal on the new White Rodgers, the heat/furnace never shuts off? So currently, that wire is not connected to anything... Thanks for reading my post BTW
kshaly
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- O/B terminal on new thermostat

Postby kshaly » Sun Jun 17, 2012 3:01 am

Ahhhhh.. makes sense. Thanks a million Will try just that in a few hours. Appreciate your help?
kshaly
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