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Unfortunately, the wiring diagrams for heat pumps are not so easy to come up with. The outdoor unit will have its own diagram, but may not include the indoor air handler and will probably not include the thermostat. That said, the orange wire is commonly run from the thermostat to the reversing valve in the outdoor unit. This wire is usually not connected to the indoor airhandler. The orange wire is usually used in a unit that has the reversing valve energized in cool. Ruud, however has its reversing valve energized in heat. Probably not useful but maybe helpful
Posted on Mar 26, 2009
Please go here to download a .pdf manual for your #900-74528 trimmer.
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Posted on Aug 29, 2009
Rotate the iTrip AutoPilot FM Transmitter controller so that
its buttons are facing up and its data
cable is on the left side. The
data cable wires attach to a row of contact points along the left side of the
circuit board as follows (from top to bottom):
1 = Purple
2 = White
3 = Blue
4 = Red
5 = Black
6 = Brown
7 = Green
8 = Yellow
9 = <unused>
Posted on Apr 22, 2010
Hello. The line from each sensor runs to the control panel on the motor. If you climb up and take a look at the rear of the motor you will see the other end of each wire. J.
Posted on May 27, 2010
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