Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 23

Part name Sign
Compressor /
Pressure Switch Hs
Pd
Pressure Sensor
Ps
LEVa1/2
Electronic
Expansion Valve
LEVb
SV1
SV18i
Solenoid Valve
SV10
SV9
SV3i
SV31
4WV1
4-way valve
4WV2
Unloading Valve DPC
Toili
Tdp
Tdi/Td1
Toilp
Tdef1/2
Temp. Sensor
Ts/Tsi
Tsco
Toci1/2
Tao
Tliqsc
CHa
Heater CHi
CH1
Function
Capacity control, meet indoor load request by adjusting the frequen-
cy.
High pressure protection control
In heating, compressor frequency adjustment, abnormal pressure
protection.
In cooling, compressor frequency adjustment abnormal pressure
protection.
Refrigerant flow control when heating
Sub-cooling valve, in cooling, be controlled as the Tliqsc target.
1.Meet balance of high/low pressure when compressor starts up or
stops.
2.High/low pressure protection.
Starting auxiliary oil return when the frequency of inverter compres-
sor is high.
When equalizing oil, SV10 starts up.
When equalizing oil among modules, SV 9 starts up.
When Tdi/Toili is high, the inverter compressor starts up.
12~16HP outdoor ON/OFF compressor starts up when TD1 is high.
Change over between cooling and heating
When one outdoor unit is operating, 4WV2 can control the heat
exchanger working at a half or full condition.
Avoid the oil equalization circuit being blocked by liquid seal.
Detect the refrigerant oil temp. at compressor's bottom to judge
whether the units operation, oil temp. and oil temp. over-heating
degree meet the standard or not.
Detect the high pressure air pipe's temp. to judge whether the
diversion in 4WV is success or not.
Detect the temp. of inverter and On-Off compressors' top
Detect the temp. of oil equalization pipe when equalizing the oil if
there are several outdoor units
Detect the coil's temp. of outdoor heat exchanger to judge if it
reaches the defrosting standard
Detect the compressor's suction temp.
Detect the branch outlet pipe's temp. of heat regenerator in order to
control LEVb during cooling.
Detect condenser's whole air pipe's temp. to control LEVa1 and
LEVa2 when heating.
Detect the outdoor temp. to set the original airflow speed and
defrosting condition.
Detect the main outlet pipe's temp. of heat regenerator in order to
control LEVb during cooling.
Apply to heat the liquid refrigerant in the gas-liquid separator
Applied to heat the oil in the inverter compressor
Applied to heat the oil in On-Off compressor
22
Data
ANB66 0.23Ω
4.15Mpa, OFF
NSK-BD042I-224
NSK-BD017I-224
8~12HP: Φ2.4
8-12HP: Φ2.4
AC220V
Open when power is on, close
when power is off
When the frequency of inverter
compressor pass 62rps, starts
up, stops when 52rps.
AC220V
AC220V
AC220V
AC220V
AC220V, power on in heating;
power off in cooling or
defrosting
AC220V, always power on when
heat exchanger works at a half
condition no matter heating or
cooling.
Opened when the circuit's
pressure is over 4.1MPa
O
C) = 50K
R(80
O C) = 4450K
B(25/80
O C) = 10K,
R(25
O O
C/50 C) = 3700 K
B(25
70W,220V, 1 piece
33W,220V, 2 piece
33W,220V, 1 piece
Remark
O
C
20
2A
2A
2A
2A
2A