Honeywell RTH9590 Guide De L'utilisateur page 20

Installing your thermostat
Alternate wiring (Heat Pump System)
Use this if your wire labels
don't match the terminal labels.
Note:
You must have a C wire
or equivalent. See page 11.
1
2
R
3
V
2
18
O
C
B
X B
Y
G
Rc
AUX
R
X X2 W W1 W2
VR
Y2
L
F
See key to –
1
4
5
6
7
on page 19.
7