SiUS091601ETable of Contents iv5.5 Four Way Valve Performance Check ....................................................... 1045.6 Inverter Unit Refrigerant System Check................................................... 1045.7 Inverter Analyzer Check ........................................................................... 1055.8 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 1075.9 Installation Condition Check..................................................................... 1085.10 Discharge Pressure Check....................................................................... 1085.11 Outdoor Fan System Check ..................................................................... 1095.12 Main Circuit Short Check.......................................................................... 1095.13 Power Module Check ............................................................................... 111Part 7 Trial Operation and Field Settings.................................... 1131. Pump Down Operation............................................................................1142. Forced Cooling Operation .......................................................................1153. Trial Operation ........................................................................................1164. Field Settings ..........................................................................................1184.1 Temperature Display Switch .................................................................... 1184.2 When 2 Units are Installed in 1 Room...................................................... 1194.3 Jumper and Switch Settings..................................................................... 1214.4 Facility Setting Switch (cooling at low outdoor temperature).................... 1215. Silicone Grease on Power Transistor / Diode Bridge..............................122Part 8 Appendix............................................................................ 1231. Piping Diagrams......................................................................................1241.1 Indoor unit ................................................................................................ 1241.2 Outdoor Unit ............................................................................................. 1252. Wiring Diagrams......................................................................................1272.1 Indoor Unit................................................................................................ 1272.2 Outdoor Unit ............................................................................................. 130