Airwell AWAU-YDV1010-H13, Service Manual

Page: 45 / 187

43
Part name Sign Function Data Remark
Compressor /
Capacity control, to meet indoor load through frequency
adjustment.
ANB42: 0.302Ω
20
℃
ANB52: 0.302Ω
ANB66: 0.23Ω
Pressure switch HPs1/2 Protection control for high pressure 4.15Mpa, OFF setting
Pressure sensor
Pd1/Pd2
In heating , compressor frequency adjustment and
protection control for abnormal pressure
0~4.15MPa
Ps
In cooling , compressor frequency adjustment and
protection control for abnormal pressure
0~1.7MPa
Electronic expansion
valve
LEVa1, 2 Refrigerant flow control in heating HAM-BD30SM-2
LEVb
According to the liquid pipe super-cooled degree control
in cooling
HAM-B50YGSM-1
Solenoid valve
SV1a
1. Balance between high and low pressures when the
compressor starts and stops;
AC220V 2A
2. Protection to prevent high and low pressures.
SV181/
SV182 Auxiliary oil return capillary to return oil when the
compressor operates under high frequency.
AC220V 2A
SV31/SV32
Started when the compressor discharging temperature
and oil temperature are too high to carry out
temperature reduction by refrigerant spraying.
AC220V 2A
SV10
Outdoor unit SV10 for oil suction starts during oil
balance; for pressure relief to prevent explosion of pipe
group.
AC220V 2A
SV11
The stopped outdoor unit starts during heating to
realize gas balance of the low pressure side together
with the operating outdoor unit to prevent liquid return. AC220V 2A
SV9
The outdoor unit for oil discharging starts SV9 for oil
balancing during oil balance among modules.
AC220V 2A
Four-way valve 4WV Switch between cooling and heating
AC220V Power on during heating and
power off during cooling or defrosting.
Temperature sensor
Toil1/2
To detect the temperature of refrigeration lubricant at
the compressor bottom.
R (80
℃
)
＝
50K
B (25/80
℃
)=4450K
Tsuc
To detect the temperature of gas return pipe so as to
judge whether the switch of four-way valve succeeds.
Tsacc To detect the inlet temperature of gas-liquied seperator
Td1/Td2
To detect the top temperature of inverter/ON-OFF
compressor.
Toilp To detect oil pipe temperature during oil balancing.
Tdef1/Tdef2 To detect the frosting of outdoor heat exchanger.
R(25
℃
)=10K,
B(25
℃
/50
℃
) =3700 K
Ts1/Ts2 To detect the suction temperature of compressor.
Tsco
To detect the temperature of regenerator outlet pipe to
control LEVb during cooling.
Toci1/2
To detect the temperature of condenser main gas pipe
to control LEVa1, 2 during heating.
Tao
To detect ambient temperature and control the initial air
speed and defrosting conditions.
Tliqsc
To detect the temperature of regenerator main outlet
pipe to control LEVb during cooling.
Heater
CHa
Used to heat the liquid refrigerant in the gas-liquid
separator.
40W, 220V
CH1/2
Used to heat the compressor oil in the inverter
compressor.
33W, 220V, 2 pieces/compressor