LG ARUB115BT2 Service Manual - Page 9
Heating Operation
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Heating Operation Indoor unit Heat Exch. EEV Fan Filter Indoor unit Heat Exch. EEV Fan Filter Indoor unit Heat Exch. EEV Fan Filter Indoor unit Heat Exch. EEV Fan Filter s Piping Diagrams : Low temp./Low pressure gas : High temp./High pressure liquid : High temp./High pressure gas HR unit s s s s s s s s s s s s (Low pressure Gas Pipe) (Liquid pipe) (High pressure Gas Pipe) s s s s 4 Way Valve O/S Hot Gas By pass O/S High Pressure Gas Pipe Low Pressure Gas Pipe Liquid Pipe INV Comp Accum CON Comp Liquid Injection Sub-Cooler Pressure sensor Pressure switch Check valve EEV Sensor s Solenoid Outdoor unit Service Valve Strainer *( ) To be used only for series Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes -9- LGE Internal Use Only