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Old 03-12-2014, 09:08 PM   #16
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Trane XR13 Contactor Bad?


OK. I will run down and try to trace wire as you suggest.

Also, here are photos of the ORIGINAL wiring of the thermostat and control board before I touched anything.
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Trane XR13 Contactor Bad?-photo-2.jpg   Trane XR13 Contactor Bad?-photo-1.jpg  

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Old 03-12-2014, 09:14 PM   #17
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Trane XR13 Contactor Bad?


ok for starters...blue from old stat. controled the a/c because it was on y terminal on stat sub base.....did you run new wire from furnace to stat...iam going to say no ...ben sr...get a picture of new stat sub base..

Last edited by ben's plumbing; 03-12-2014 at 09:28 PM.
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Old 03-12-2014, 09:20 PM   #18
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Trane XR13 Contactor Bad?


I did not run new wire. There was a 5th wire that was available...you can see the yellow wire tucked to the side.

OK. So I traced the wire that came in along side the power. It goes into small box (another relay???) and then into some posts on the board, not Y / C.

Photo one is the mystery box. In the second and third photos, the wires that extend from the mystery box to the board are the wires that have the blue crimping.
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Trane XR13 Contactor Bad?-photo-1.jpg   Trane XR13 Contactor Bad?-photo-2.jpg   Trane XR13 Contactor Bad?-photo-3.jpg  
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Old 03-12-2014, 09:25 PM   #19
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Trane XR13 Contactor Bad?


those look like the control wires for the humidifier....so again we have to start with the stat ...because you needed an extra wire but did not use the yellow look at my drawing see if yo can understand it..ben sr
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Old 03-12-2014, 09:26 PM   #20
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Trane XR13 Contactor Bad?


ok see this drawing
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Old 03-12-2014, 09:47 PM   #21
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Trane XR13 Contactor Bad?


Your drawing makes sense.

OK. Went back to some more tracing and things are becoming a little clearer. The only wires that come into the furnace are the thermostat wires and wires that head off to humidifier. This just didn't make sense to me. How is the contactor getting power?!?!?

I think I found the answer. Take a look at the attached. The white sheathed wire is the line that runs to the A/C unit outside. Looks like they opened the sheathing and spliced in power off the blue wire from thermostat bundle.

I think this clarifies wiring a whole bunch. Now, the question is what to do?

Should I "undo" the splicing in the attached photo and then extend the white sheathed wire down to the control board and wire the system the way you drew?
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Old 03-12-2014, 09:52 PM   #22
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Trane XR13 Contactor Bad?


Quote:
Originally Posted by sourkraus View Post
Your drawing makes sense.

OK. Went back to some more tracing and things are becoming a little clearer. The only wires that come into the furnace are the thermostat wires and wires that head off to humidifier. This just didn't make sense to me. How is the contactor getting power?!?!?

I think I found the answer. Take a look at the attached. The white sheathed wire is the line that runs to the A/C unit outside. Looks like they opened the sheathing and spliced in power off the blue wire from thermostat bundle.

I think this clarifies wiring a whole bunch. Now, the question is what to do?

Should I "undo" the splicing in the attached photo and then extend the white sheathed wire down to the control board and wire the system the way you drew?
yes. undo the splice ..extend outdoor unit wire to control board...then look at the stat wiring use the extra yellow wire in the thermostat wires to make up the 5 th wire needed to run new stat..ben sr
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Old 03-12-2014, 09:56 PM   #23
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Trane XR13 Contactor Bad?


Ben - thanks so much. I'll run to Home Depot this weekend and pick up the 18 gauge.

I wish PA wasn't so far from MO so I could buy you a beer.

I really appreciate your help.
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Old 03-12-2014, 10:01 PM   #24
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Ben - thanks so much. I'll run to Home Depot this weekend and pick up the 18 gauge.

I wish PA wasn't so far from MO so I could buy you a beer.

I really appreciate your help.
Ill go to the frig and have one on you .. glad i could help ...let us know how you make out.... you did good by being able to follow directions...you made me look good... ben sr
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Old 03-13-2014, 08:33 AM   #25
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Trane XR13 Contactor Bad?


I like your drawings Ben. Better than my "creation" with MS Paint. Never thought of using my digital camera and hand drawing them. Gotta love technology.
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Old 03-13-2014, 10:37 AM   #26
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I like your drawings Ben. Better than my "creation" with MS Paint. Never thought of using my digital camera and hand drawing them. Gotta love technology.
I can't for the life of me post pictures like some of you guys do ..the e plumber did a great job on a disposal last night, you have done some nice ones as well .. I suck at computers so as long as i have my camera I guess that will do ...thanks ben sr
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Old 03-13-2014, 12:18 PM   #27
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Trane XR13 Contactor Bad?


Right Click on the photo in the post and copy it to your pics folder using "Save picture as>jpeg". Same process with pics from the net. Open them in MS Paint and you can add circles and arrows etc. I like the handdrawn idea of elec diagrams as describing things to DIYers is like pulling teeth and a pic makes it a lot easier. Going to try my camera phone and then upload them to a filecloud and then back to the computer. No cables involved so it may be rather easy. FYI in the old days we did go straight from the tstat Y to the condenser but nowadays it needs to go to the board to energize the fan to cooling speed. Before they used G to energize high speed, now it does low or continuos on Lennox. Not sure how the heck his system worked like that.
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Old 03-13-2014, 02:36 PM   #28
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Trane XR13 Contactor Bad?


Quote:
Originally Posted by yuri View Post
Right Click on the photo in the post and copy it to your pics folder using "Save picture as>jpeg". Same process with pics from the net. Open them in MS Paint and you can add circles and arrows etc. I like the handdrawn idea of elec diagrams as describing things to DIYers is like pulling teeth and a pic makes it a lot easier. Going to try my camera phone and then upload them to a filecloud and then back to the computer. No cables involved so it may be rather easy. FYI in the old days we did go straight from the tstat Y to the condenser but nowadays it needs to go to the board to energize the fan to cooling speed. Before they used G to energize high speed, now it does low or continuos on Lennox. Not sure how the heck his system worked like that.
yep but the old days are gone forever.....agree not sure how his system worked, but it must have before he changed stats... Ill try the right click stuff ..stay tooned... ben sr

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