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• Posted in thread: 24vac transformer burns out on 05-31-2011 at 08:14 AM
  I just replaced the contactor and the AC is running perfect (and very cool, Yay). The coil on
  the old contactor is burnt and almost melted. I believe now I know what happened from the
  beginning that c...

• Posted in thread: 24vac transformer burns out on 05-30-2011 at 08:23 AM
  The out door relay will snap closed Werther you have the power on to the outdoor unit or not.
  Are you sure you don't have a line volt wire touching low volt in the out door unit. With the
  stat not cal...

• Posted in thread: 24vac transformer burns out on 05-29-2011 at 12:32 PM
  Bad news for me. Replaced the Thermostat wire to the outside unit and the fuse blew when I
  tried to start the AC. I know it’s not the wire because I first tried the AC without
  power to the outsi...

• Posted in thread: 24vac transformer burns out on 05-28-2011 at 02:50 PM
  Thanks. Will replace and report.

• Posted in thread: 24vac transformer burns out on 05-28-2011 at 02:43 PM
  Checked the wire that runs to the outdoor unit and the insulation worn out close to the unit.
  Any considerations in terms of what wire to use to replace it; outdoor rated, solid versus
  stranded, any v...

• Posted in thread: 24vac transformer burns out on 05-28-2011 at 01:55 PM
  I have attached part of the documentation that came with the unit. The furnace unit is a
  TUD080C936A. I could not attach the whole .pdf file because of attachment size restrictions on
  this site. I cou...

• Posted in thread: 24vac transformer burns out on 05-28-2011 at 12:48 PM
  I have a Trane Gas Furnace and AC unit. The wires to the T-stat are Green, white, Yellow and
  Red. There is a fifth Blue wire that is not used. At the controler board there are an extra
  couple of wires...

• Posted in thread: 24vac transformer burns out on 05-28-2011 at 10:26 AM
  Hi hvactechfw and thanks for your insight. I checked the orange wire with my ohm meter and the
  wire is fine with no grounding to cabinet. However, the Valve switch it connects to reads
  ground no matte...

• Posted in thread: 24vac transformer burns out on 05-27-2011 at 04:32 PM
  Guess what? My same Trane unit would not start in AC mode last night. It worked perfectly all
  through the winter in furnace mode. I had no response when I switched to AC so I went and
  checked the cont...

• Posted in thread: 24vac transformer burns out on 01-04-2011 at 11:48 AM
  Sorry for the delay and thank you to kok328 for his help in logically determining what was
  wrong with my system. As we discussed, I replaced the transformer and the control unit (the new
  control unit ...