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W
B
C
R
Y
G
FOR ONE STAGE
HEAT THERMOSTAT
w
G
R
C
1
INDOOR UNIT
Figure 11-2
Notes: "-----"The electric auxiliary heat connection (optional).
W :Electric auxiliary heat signal.
W1 :The first Electric auxiliary heat signal.
W2 :The second Electric auxiliary heat signal.
W
B
C
R
Y
Y2
G
THERMOSTAT
Y1
Y2
G
R
C
w1
INDOOR UNIT
Figure 11-3
Notes:
"
" The electric auxiliary heat connection (optional).
W : Electric auxiliary heat signal.
W1 : The first Electric auxiliary heat signal.
W2 : The second Electric auxiliary heat signal.
Y2 : The second cooling signal, only for 61K AC system.
Y1 and Y2 of INDOOR UNIT : Only for 61K AC system.
Low Voltage line must be connected inside the outdoor unit case through control wiring channel on the right. High
Voltage line must be connected through power wiring channel on the left. Mixed channel may result in personal injury.
1. During installation or maintenance, the tie of rubber ring on the electric control box shall not be cut with scissors. It can be
untied by pressing the loose buckle. The tightening belt can be reused.
FOR TWO STAGE
HEAT THERMOSTAT
w
2
C
Y
OUTDOOR UNIT
Control Wiring for 18K-60K AC Systems
Support 3H thermostat
THERMOSTAT
C
Y1
Y2
w2
OUTDOOR UNIT
Control Wiring for 61K AC Systems
WARNING
10
W2
W1
B
C
R
Y
G
w
w
R
C
1
G
2
INDOOR UNIT
W2
W1
B
C
R
Y
Y2
G
Y1
Y2
G
R
C
w1
w2
INDOOR UNIT
C
Y
OUTDOOR UNIT
Support 4H thermostat
C
Y1
Y2
OUTDOOR UNIT
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Troubleshooting
