Haier 3U19FS1ERA Service Manual - Page 80
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>_]]VbTZR\ _^UZdZ_^Vb Pipe system for 5U34HS1ERA 4-way valve coil: OFF Refrigerant flow in cooling ON Refrigerant flow in heating Indoor heat exchanger temp. sensor FAN-IN Indoor ambient temperature sensor Indoor unit A Indoor unit B Indoor unit C Indoor unit D Indoor unit E Unit A gas pipe temp. sensor Unit B gas pipe temp. sensor Unit C gas pipe temp. sensor Unit D gas pipe temp. sensor Unit E gas pipe temp. sensor Indoor unit A Indoor unit B Indoor unit C Indoor unit D Indoor unit E Unit A liquid pipe temp. sensor Strainer EEV A Unit B liquid pipe temp. sensor Strainer EEV B Unit C liquid pipe temp. sensor Strainer EEV C Unit D liquid pipe temp. sensor Strainer EEV D Unit E liquid pipe temp. sensor Strainer EEV E Compressor Suction temp. sensor Discharge temp. sensor Oil separator High pressure swtich Capillary tube Ø2.7*Ø1.0*1400 Gas stop valve 4-way valve Low pressure switch Accumulator Pipe sensor Toci 5/8 Outdoor heat exchanger temp. sensor FAN-OUT Outdoor ambient temperature sensor Liquid stop vavle 3/8 Receiver EEV O Strainer Check valve Defrost sensor Distributor 3.2 Outdoor frequency control 3.2.1 Compressor running frequency range: 20~95RPS 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 -79-
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