My heat pump is a American Standard Heritage 10 (6H0036A100A3). The wiring for the system contained 8 wires. I bought a new thermostat (Honeywell RTH7600D) but am having trouble wiring it. I am not getting any heat from the system. The wires in the old thermostat were marked as follows...
Old System set up (color wire):
R (red)
G (green)
Y (yellow)
X (black)
E (brown)
O (orange)
W2 (white)
W3 (blue)
New System inputs (Honeywell RTH7600D) with my connections:
C (black)
G (green)
Y (yellow)
O/B (orange)
RC (connected to R)
R (connected to RC) (red)
AUX (white)
E (brown)
L
***Blue wire is not connected to anything
Old System set up (color wire):
R (red)
G (green)
Y (yellow)
X (black)
E (brown)
O (orange)
W2 (white)
W3 (blue)
New System inputs (Honeywell RTH7600D) with my connections:
C (black)
G (green)
Y (yellow)
O/B (orange)
RC (connected to R)
R (connected to RC) (red)
AUX (white)
E (brown)
L
***Blue wire is not connected to anything