Wiring
Cooling Only System Wiring Diagram
Cooling And Heating System Wiring Diagram
INDOOR UNIT OUTPUT WITH 24VAC 1.5A
INDOOR UNIT
THERMOSTAT
BROWN
RED
YELLOW
INDOOR UNIT OUTPUT WITH 24VAC 1.5A
INDOOR UNIT
THERMOSTAT
BROWN
RED
YELLOW
GREEN
GREEN
BLUE
INDOOR UNIT OUTPUT WITH 24VAC 1.5A
INDOOR UNIT
THERMOSTAT
BROWN
RED
YELLOW
GREEN
BLUE
White
Aux
Aux
Page 34
OFF
ON or OFF
ON
√
X
*
Fan speed setting
Unit ON/OFF G Setting fan
speed
√
√
√
X
X
X
Fan OFF
Auto fan speed
Auto fan speed
Connector
Purpose
Mode setting
Y W G Aux/Dry Setting mode
√
√
√
√
X
X
X
X
X
X
X
X
X
X
X
*
√
√
*
*
*
√
*
*
*
Cooling
Heating
(without aux-heater)
Heating
(with aux-heater)
Fan only
OFF
OFF
Dry
X
X
√
CN15
R C
CN18
CN19
G1 G2 G3 Y W G
24V THERMOSTAT
24
V R
24
V C
Co
ol
He
at
Au
to
_F
an
Au
x/
Dr
y
CN22
Wiring Diagram of 24V THERMOSTAT
TEM PERATURE SENSOR
The unit has one temperature sensor, which is
called a pipe temperature sensor. If the
temperature sensor is damaged, the system
stops and the LED flashes repeatedly.
Connector
Y Cooling
W Heating
G Fan - Auto speed
AUX/DRY Aux-Heat/Dry
Cooling & heating units with electric
heating module
