new thermostat wiring - http://www.hvacmechanic.com/ Forums
Original message
| pickview
 |  "new thermostat wiring"
, posted Sun 10 Aug 23:53  
I am replacing my older programable Honeywell tstat for my heat pump with a newer Honeywell RTH 7000 series tstat. The old one failed. All was going great, marked all of the wires correctly from the old one to place on the terminals in the new one. I got to the last wire marked y1 w1. The Installation guide said "stop". Where does this wire go? I can't see paying an $80.00 call out for someone to say put that one wire "here". Can anyone answer my question?
Thank you
Pickview
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Replies:
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| Houston204
| "Re(1):new thermostat wiring" , posted Mon 11 Aug 09:13
The old y1 w1 wire is Y on the new stat.
The jumper is internal when you set option 170 to 7.
option 190 = 0 if you are using the O terminal. It is 1 if you are using the B terminal.
"Tip of the Day" Remember to remove power first.
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