Haier HB2400VD2M20 Installation & Operation Manual page 12

For Thermostat Control Environment-temperature and Air Conditioning open/stop, the wiring
diagram as shown diagram 4. Thermostat can be mechanical type or programmable type.
Note: Thermostat C: COM.
R : AC24V
Y : COMPRESSOR
G : FAN
For detailed Thermostat, please connect
corresponding terminal according to above
control specification.
For Thermostat only control Air
Conditioning open/stop, hot
control Environment temperature,
can adopt different power switch
show diagram 5. This mode is
control the indoor unit & cooling
only outdoor unit at the same time
no air supply mode. If need select
the air supply mode, switch can
adopt multi-connect switch or
select switch. The detailed infor
see the following diagram 6.
Above diagram: Outdoor Unit
Connection
Left: Indoor and Outdoor unit power
supply Respectively Right: Indoor unit
power supply.
G
TO FAN
RELAY
CONTROL
BL
C Y
TO OUTDOOR UNIT C,Y
Diagram 4
TO FAN
RELAY
CONTROL
TO OUTDOOR UNIT C,Y
Diagram 5
1
2
3
SELECT SWITCH
4
5
6
TO FAN RELAY
CONTROL
TO OUTDOOR UNIT C,Y
Diagram 6
12
TERMOSTAT
Y R C
RD
RD
BL
24V COM
TRANSFORMER
SWITCH
RD
RD
BL
24V
C Y
TRANSFORMER
RD
RD
BL
24V
C Y
TRANSFORMER
BL
COM
BL
COM