Thermostat wiring – haier HB4200VA1M25 User Manual
Page 10
THERMOSTAT WIRING
10
For Thermostat Control Environment-temperature and Air Conditioning open/stop, the wiring
diagram as shown diagram 1. Thermostat can be mechanical type or programmable type.
Note: Thermostat C : COM.
R : AC24V
Y : COMPRESSOR
G : FAN
O : 4 -WAY VALUE
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 2. This mode is
control the indoor unit & heat
pump 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
3.
Above diagram: Outdoor Unit
Connection
Left: Indoor and Outdoor unit power
supply Respectively Right: Indoor unit
power supply.
COM
BL
YL
BL
TRANSFORMER
24V
RD
TO FAN RELAY
CONTROL
Y C
TO OUTDOOR UNIT R,C,Y,O
SELECT SWITCH
1
2
3
4
5
6
Diagram 1
Diagram 2
Diagram 3
BL
24V
COM
TRANSFORMER
YL
RD
BL
TERMOSTAT
Y
G
R
C
TO INDOOR
FAN RELAY
CONTROL
RUN SWITCH
BL
24V
COM
TRANSFORMER
RD
RD
BL
R
Y
TO OUTDOOR UNIT R,C,Y,O
C
Y
TO OUTDOOR UNIT R,C,Y,O
C
OR
O
O
MODE SWITCH
TO INDOOR
FAN RELAY
CONTROL
O
R
OFF
FAN ONLY
E. HEAT
HEAT PUMP
COOLING
R
O
Open for heating
Close for cooling