Table of Contents
Page
1. OPERATING RANGE .............................................................................................................................. 1
2. SPECIFICATIONS
2-1. Unit Specifications .......................................................................................................................... 2
2-2. Major Component Specifications.................................................................................................... 3
2-3. Other Component Specifications.................................................................................................... 5
3. DIMENSIONAL DATA.................................................................................................................................7
4. REFRIGERANT FLOW DIAGRAM ........................................................................................................... 9
5. PERFORMANCE DATA
5-1. Performance charts ....................................................................................................................... 10
5-2. Air Throw Distance Chart .............................................................................................................. 11
5-3. Cooling Capacity ........................................................................................................................... 1 2
6. ELECTRICAL DATA
6-1. Electrical Characteristics ................................................................................................................ 13
6-2. Electric Wiring Diagrams ................................................................................................................ 14
7 . FUNCTION
7-1. Room Temperature Control ........................................................................................................... 16
7-2. Freeze Prevention ......................................................................................................................... 17
7-3. Outdoor Fan Speed Control .......................................................................................................... 18
8. TROUBLESHOOTING
8-1. Check before and after troubleshooting ........................................................................................ 19
8-2. Air conditioner does not operate .................................................................................................... 20
8-3. Some part of air conditioner does not operate .............................................................................. 24
8-4. Air conditioner operates, but abnormalities are observed ............................................................. 26
8-5. If a sensor is defective ................................................................................................................... 27
9. REFRIGERANT R407C: SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT
9-1. Characteristics of new refrigerant R407C....................................................................................... 28
9-2. Checklist before serving ................................................................................................................. 28
9-3. Tools specifically for R407C ........................................................................................................... 29
9-4. For tubing installation procedures .................................................................................................. 29
9-5. In case of compressor malfunction................................................................................................. 30
9-6. In case refrigerant is leaking........................................................................................................... 32
9-7. Charging additional refrigerant ....................................................................................................... 34
9-8. Retro-fitting existing systems.......................................................................................................... 34
10. CHECKING ELECTRICAL COMPONENTS
10-1. Measurement of Insulation Resistance .......................................................................................... 35
10-2. Checking Continuity of Fuse on PCB Ass'y.................................................................................... 36
10-3. Checking Motor Capacitor ............................................................................................................. 36
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