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Wiring for GPH1548 & Honeywell Themostat Th8320U1008

I have a Goodman GPH1548 2 stage cooling and 2 stage heating via the heat pump. The unit has had field installed heat strips.
Wiring as best as I determine is as follows -
Y2 - yellow
AUX -brown
RC+R - red
O/B - orange
Compress relay 1 - yellow
Fan Relay - green
Compress relay 2 - purple
I have a white wire (W1) where does it go?This unit has a 2 stage heat/cool and aux heat strips.
I am starting to think I do not need the white wire since the rev. value will give me the two stage heat and the 2 stage cool. The brown wire would control the heat strips?
any help is appreciated

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  • ustepr Oct 16, 2008

    The thermostat is a Honeywell model number Th8320U1008

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5 Suggested Answers

pierre1811
  • 144 Answers

SOURCE: replacing thermostat: tstatccshp01 with th8320u1008

Hook up o to o/b, then in the installation programming set the change over valve to energize in cool. Then hook up w to aux. Good luck.

Posted on Jan 21, 2009

  • 340 Answers

SOURCE: GOODMAN CPLT36-1 WITH HONEYWELL VISION PRO STAT 8000

what is the trans former voltage needs to be 26- 28 v. and is the board fused max 3-5 amp fuse I know it is on of the two check all of your wiring. good luck Tom

Posted on Jul 12, 2009

  • 233 Answers

SOURCE: Wiring Trane/Honeywell TH8320U

use the outside designations for heat pump, and inside for standard, I would assume a heat pump since you have more than five wires attached to it now. Use the colors of the wire to match to the designations, use tan for y2, black for w2 rc and rh should already have a factory jumper. I would have to trace out the "U" and see where it terminates, I have not seen a bare wire on a stat in 27 years of doing this. before powering, verify the tan and black at the indoor unit circuit board and see if they are landed on the terminals designated at the stat. hope this helps

Posted on Jul 27, 2009

  • 587 Answers

SOURCE: Heat PumP: Rheem Two Stage Heat, One Stage Cool Thermostat Replac

R = R with jumper to RC hot side of transformer
B = Reversing valve
Y = Compressor relay
G =Blower
C = common on transformer (X on old t'stat)
W2 = Auxillary heat
E = Emergency heat

Posted on Mar 16, 2010

  • 4 Answers

SOURCE: Wiring a Honeywell VisionPRO TH8320U1008 Thermostat

on the honey well tstat you have to go into the installer set up and set the swithover valve for energized in cooling

Posted on Jan 19, 2012

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