Haier InoSens MRV SI AU032FSEUA Service Manual page 20

Part name Sign
Compressor
HPS
Pressure switch
LPS
Electronic
EEV
expansion valve
Solenoid valve SV1
4-way valve 4WV
Temp. sensor
Tao
Tdef
Function
Capacity control, meet indoor load
request by adjusting frequency and
/
opening and closing fixing frequency
compressor.
High pressure protection
In cooling, compressor frequency
adjustment and protection control for
abnormal pressure.
In heating, refrigerant flow control
(subcooling valve)
1. Keep balance of high/low pressure
when compressor starts up and stops
2. High/low pressure protection
Changing over between cooling and
heating
Td Detect the top temp. of compressor
Ts Detect the top suction of compressor
Detect ambient temp., set primary fan
speed and control defrost condition
Detect frost condition of outdoor heat
exchanger
4.15Mpa, OFF
0~1.7MPa
Φ3.0
AC220V
Open when power is on,
close when power is off.
AC220V electrified in
heating; powered off in
cooling or defrosting.
R(80°C)=50K
B(25/80°C)=4450K
R(80°C)=10K
B(25/80°C)=3700K
18
Date Note
20°C
2A