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Replacing trane control board

Is replacing the control board as easy as simply noting where all the wires run to on the old board, then putting the new board in and replacing the wires where they were on the old board on the new one? Thanks

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If it is the same board and not an updated version. They do make changes quite often, but will supply the new wiring harness or adapters needed. If so just follow instructions that come with it.

Posted on May 28, 2008

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Thermostat wiring


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Please note. Not all installers use the proper color codes when they install or replace equipment. It may be necessary go go to the furnace or outdoor unit to verify what wires are for what purpose. Also be sure there are no splices in the wire that could change the wire colors between components.
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  • Rc (Red cooling) 24 volts from transformer in cooling equipment.
Note: If only furnace has a transformer and cooling equipment does not jumper Rc and Rh.
  • W (White) sends 24 volts to furnace control to start the heating cycle.
  • W2 (no standardized wire color, usually whatever wire color is available) controls second stage heat.
Note: W2 is most often used for heat pumps to control what is called emegency heat or Auxillary heat, and most often will use the white wire.
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  • C (common) most often brown but can also be black or other color available to installer.
  • O (orange) Energizes heat pump reversing valve for cooling (Trane and most other brands).
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3 Answers

TRANE PTAC


You need to replace your control board, but if you are can repair it by your self you can change the relay that supply the fan and condenser.

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