Before using the controller, read thisInstruction Book carefully to ensureproper operation.Retain this Instruction Book for futurereference.Make sure that this manual as well as theInstallation Manual are passed on to anyfuture air condition system users.To ensure safety and proper operation ofthe unit, the unit should only be installedby qualified personnel.Air-conditioner Control SystemADVANCED TOUCH CONTROLLERMODELAT-50AINSTRUCTION BOOKSafety Precautions .............................................................. 2Function List ........................................................................ 4Names and Functions of Controller Components................ 6Screen Configuration [HOME screen] ................................. 8Buttons [HOME screen] ..................................................... 10Icon Displays [HOME screen]............................................ 12Basic Operations ............................................................... 16Screen selection ......................................................................... 16Group selection .......................................................................... 17Operating the Air conditioning unit group ................................... 18ON/OFF operation ........................................................................ 18Mode............................................................................................. 18Temperature setting ...................................................................... 20Interlocked ventilation units(LOSSNAY)/Fan speed/Air direction/Louver settings ....... 21"Disable scheduled operation" button........................................... 22Operating the LOSSNAY group .................................................. 22Mode............................................................................................. 22Fan speed setting ......................................................................... 22Operating the General equipment group .................................... 22ON/OFF operation ........................................................................ 22Multiple group selection screen .................................................. 23Disabling functions ..................................................................... 23Menu Screen ..................................................................... 24Usage - Main Menu Settings ............................................. 26Operation Setting ....................................................................... 26Restriction Settings .................................................................... 42Control Panel.............................................................................. 50System Management ................................................................. 57Maintenance ...................................................................... 61Touch Panel Cleaning screen..................................................... 61Troubleshooting ................................................................. 62