Haier 3U19FS1ERA Service Manual - Page 78
Main control functions, 1 Refrigerant diagram, Pipe system for 3U19FS1ERA
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>_]]VbTZR\ _^UZdZ_^Vb 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 Gas stop vavle Indoor unit A Gas stop vavle Indoor unit B Gas stop vavle Indoor unit C Unit A gas pipe temp. sensor Unit B gas pipe temp. sensor Unit C gas pipe temp. sensor Compressor Suction temp. sensor Discharge temp. sensor Oil separator High pressure switch Capillary tube Ø2.7*Ø1.0*1400 4-way valve Low pressure switch Accumulator Pipe sensor Toci Outdoor heat exchanger temp. sensor Indoor unit A Liquid stop vavle Unit A liquid pipe temp. sensor Strainer EEV A Distributor Indoor unit B Liquid stop vavle Unit B liquid pipe temp. sensor Strainer EEV B EEV O Strainer -77- 3. Main control functions 3.1 Refrigerant diagram Pipe system for 3U19FS1ERA Indoor unit C Liquid stop vavle Unit C liquid pipe temp. sensor Strainer EEV C Check valve