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I attempted to replace my RUUD 41-20804-16 thermastat it's an old mercury thermastat but after taking it off I decided against it and need to reconnect the old one back only now I can't remember where all the wires go. HELP!!! I have a white, yellow, blue, green ,red , orange, black,brown wire. There are six places on the thermastat that are marked with letters that had a wire connceted to them. They are G,B,R,Y,X,and E. I know the blue goes to B, red to R, G to green yellow to y, But I can't remember what color wire that remains goes to the X and E. The 2 remaining wires where never connected. If you can help I would be so grateful.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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chillmaster
  • 104 Answers

SOURCE: Manual Thermostat replcaement with Programmable Digital unit.

Hopefully there are markings on the old t-stat as to what terminal is what.
on the honeywell 8000 use the heat pump labeling and then the standard wiring would be
R- red
AUX-white
Y- yellow
B- O/B
C- black
G- green
There should not be a bare wire, it probably just has the insulation stripped back way too far.
You should probably open the furnace and compare the terminal label in the furnace to the wire color. normally yellow and blue pass through the furnace and are wire nutted to wires going to the outdoor unit. In the furnace the white wire will connect to the w or w1 terminal. also, you will need to set the Honeywell stat to have the following parameters.
170-7
190-1
200-0
other parameters that I did not specify, you may read the manual and make your own decision but I recommend factory settings for the other parameters

Posted on Jun 18, 2008

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koolbreezes
  • 540 Answers

SOURCE: ac heat carrier thermastat model no.hh01ad042

GOto the iside unit itself. and remove the door and look for a terminial strip that the thermostat wires from the thermostat connects to and write down the colors wires and the letters they're connected to and connect the same to the thermostat .... they should be... r--red=power w-white=heat y--yellow=cool g-- green=fan! See which wires/ colors they're not using and bend back! Thank-you-very-much!

Posted on Sep 01, 2008

  • 56 Answers

SOURCE: Trane Weathertron XE1000 Thermostat Wiring

Check to see if you have the system switch accidently on em. heat. The way you have it wired is correct except for the having brown on e. disconnect brown wire and cut ofbare end just in case they have the wire hooked up for constant run on roof.

Posted on Feb 16, 2009

peyton32034
  • 410 Answers

SOURCE: thermostat wiring goodman model aruf032-ooa-1b

is this a heat pump or straight cool with heat strips?

Posted on Mar 16, 2009

  • 30 Answers

SOURCE: Wiring on a RCA RJ-45 wall jack

the RJ45 wallplate is not meant for ethernet. It's an 8P8C connector for a phone. Will it work as a network jack? Maybe. I wouldn't use it, but if you really want to try, wire it thusly:

1 Blue --- Orange/White
2 Orange --- Orange
3 Black --- Green/White
4 Red --- Blue
5 Green --- Blue/White
6 Yellow --- Green
7 Brown --- Brown/White
8 White --- Brown

I'd still recommend a CAT5 wallplate with a CAT5 jack.

Posted on Apr 12, 2009

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