Haier AD18LS1ERA - Page 80

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3.2 Outdoor frequency control
3.2.2 Defination of high-efficiency operation and its frequency control
In order to meet the cooling request at high ambient temperature and the heating request at low ambient
temperature, we set the high-efficiency operation.
Entering condition: cooling mode, Tao≥33℃(E), heating mode, Tao≤5℃(E).
3.3 Electronic expansion valve (EEV) control
3.3.1 Electronic characteristic
Max. open angle 500 pulse
Driving speed PPS
Pipe system for 5U34HS1ERA
Comp- ressor
Discharge temp. sensor
Oil separator
Capillary tube Ø2.7*Ø1.0*1400
High pressure swtich
4-way valve
Pipe sensor Toci
Suction temp. sensor
Low pressure switch
Accumulator
Gas stop valve
Outdoor
heat
exchanger
temp.
sensor
FAN-OUT
Outdoor ambient temperature sensor
Defrost sensor
Distributor
Strainer
Check valve
Receiver
Liquid stop vavle
5/8 3/8
Strainer
Unit A liquid pipe temp. sensor
Indoor unit A
Strainer
Unit B liquid pipe temp. sensor
Indoor unit B
Strainer
Unit C liquid pipe temp. sensor
Indoor unit C
Strainer
Unit D liquid pipe temp. sensor
Indoor unit D
Unit A gas pipe temp. sensor Unit B gas pipe temp. sensor Unit C gas pipe temp. sensor Unit D gas pipe temp. sensor
Indoor unit A Indoor unit B Indoor unit C Indoor unit D
4-way valve coil: OFF ON
Refrigerant flow in cooling Refrigerant flow in heating
Indoor unit E
Unit E liquid pipe temp. sensor
Strainer
Unit E gas pipe temp. sensor
Indoor unit E
FAN-IN
Indoor ambient temperature sensor
Indoor
heat
exchanger
temp.
sensor
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EEV A
EEV B
EEV C EEV D
EEV E
EEV O
3.2.1 Compressor running frequency range: 20~95RPS