Indoor UnitsII-4644 4 way cassette4-5. PCB connector lay-out1 2 3 456789101112131415161718A CBMain PCB Noise filter PCBMain PCBNo. CN # COLOR FUNCTION1 CN62 Blue EEV2 CN60 White Louver3 CN81 Red Error Check, Indoor unit Operation4 CN83 Red External Contact Control5 CN51 Black Float Switch6 CN41 White Room Sensor, Eva-In Sensor7 CN42 White Eva-Out Sensor8 CN33 Blue Communication with WiredRemote Controller (COM2)9 CN31 Red Communication withOutdoor Units (COM1)10 CN32 White DC 12V for Wired Remote Controller11 CN10 Black MICOM Download12 CN91 White Display13 CN73 White Fan Motor14 CN71 Black AC 230V Input15 CN74 Yellow Drain Pump16 CN75 Black VentilatorNoise filter PCBNo. CN # COLOR FUNCTION17 CN01 Blue AC 230V Input18 CN02 White AC 230V OutputCNo. S/W FUNCTION ON OFFK1 - - -K2 Centralized Controller Not use UseK3 RPM Up N/A N/AK4 Optional Drain Pump N/A N/AK5 Heating Thermo-off +5°C +2°CK6 Filter Signal Display 1,000hrs 2,000hrsK7 Hot Water Coil N/A N/AK8 Electrical Heater N/A N/AK9 Min. EEV Step at Heating Fixed 80 step 0 or 80 stepK10 Priority of Indoor unit Display Slaveon Wired Remote Controller (Default) MasterK11 External Contact Control Not use UseK12 - - -ABNo.SW01 SW02S/WMain Address Setting(00~63)FUNCTIONSW03 SW04SW03Address ofInterfaceModuleChannel 0~2SW04Group Address(RMC) forCentralizedControl 0~Fchapter2_Indoor units(002-051) 3/14/08 22:09 Page 46