ivSection 1. SPECIFICATIONS ................................................................................................. 1-11-1. Unit Specifications.................................................................................................................. 1-21-2. Dimensional Data ................................................................................................................ 1-1221-3. Refrigerant Flow Diagram ................................................................................................... 1-1321-4. Operating Range ................................................................................................................. 1-1331-5. Capacity Correction Graph According to Temperature Condition ....................................... 1-1341-6. Noise Criterion Curves ........................................................................................................ 1-1391-7. Indoor Fan Performance ..................................................................................................... 1-1501-8. Airflow Distance Chart ........................................................................................................ 1-1511-9. Intaking Fresh Air of 4-Way Cassette Type ......................................................................... 1-1531-10. Electrical Wiring ................................................................................................................ 1-1551-11. Installation instructions ...................................................................................................... 1-159Outdoor Unit ........................................................................................................................... 1-159Indoor Unit .............................................................................................................................. 1-171Section 2. TEST RUN ............................................................................................................. 2-1PRECAUTIONS REGARDING TEST RUN ................................................................................ 2-2CHECKS AFTER INSTALLATION HAVE COMPLETED ............................................................ 2-3REGARDING DELIVERY TO THE CUSTOMER ........................................................................ 2-3Section 3. ELECTRICAL DATA .............................................................................................. 3-13-1. Indoor Units (Electric Wiring Diagram, Schematic Diagram) .................................................. 3-23-2. Outdoor Units (Electric Wiring Diagram) ............................................................................... 3-10Section 4. CONTROL FUNCTIONS ....................................................................................... 4-14-1. Room Temperature Control .................................................................................................4-2. Heating Standby......................................................................................................................4-3. Automatic Fan Speed Control ..............................................................................................4-4. Drain Pump Control.................................................................................................................4-5. Automatic Heating/Cooling Control .........................................................................................4-6. Automatic Flap Control............................................................................................................4-7. Filter Sign ................................................................................................................................4-8. Fan Control during Dry Mode ..................................................................................................4-9. Ventilation Fan Output .............................................................................................................4-10. T10 Terminal..........................................................................................................................4-11. Parameter ...........................................................................................................................4-13. Outdoor Units Control PCB .................................................................................................4-12. Indoor Unit Control PCB......................................................................................................4-14. Functions of Outdoor Unit PCB ...........................................................................................4-15. Self-Diagnostics Function Table ..........................................................................................4-24-44-54-64-74-84-84-94-94-94-104-144-114-224-25Section 5. TROUBLE DIAGNOSIS ......................................................................................... 5-15-1. Contents of Remote Controller Switch Alarm Display ............................................................5-2. Outdoor Unit Control Panel LED Display ............................................................................... 5-45-3. PAC System Alarm Codes ..................................................................................................... 5-55-4. Inspection of Parts (Outdoor Unit) ........................................................................................ 5-585-5. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently .......................5-25-595-6. How to Clean Heat Exchanger ............................................................................................. 5-605-7. How to Replace Fan Motor ................................................................................................... 5-61—— CONTENTS ——