LG ARUB115BT2 Service Manual - Page 12

Piping Diagrams Simultaneous Operation Mode 2 (Heating Based operation) Heating "ON" Indoor unit Heat Exch. EEV Fan Filter Heating "ON" Indoor unit Heat Exch. EEV Fan Filter Heating "ON" Cooling "ON" Indoor unit Heat Exch. EEV Fan Filter Indoor unit Heat Exch. EEV Fan Filter s : 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 s s s s 4 Way Valve O/S INV Comp Accum Liquid Injection Sub-Cooler Hot Gas Bypass O/S High Pressure Gas Pipe Low Pressure Gas Pipe Liquid Pipe CON Comp Outdoor unit Pressure sensor Pressure switch Check valve EEV Sensor s Solenoid Service Valve Strainer Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 12 - LGE Internal Use Only