iii
Table of Contents
Page
1. OPERATING RANGE ............................................................................................................................... 1
2. SPECIFICATIONS
2-1. Unit Specifications .......................................................................................................................... 2
2-2. Major Component Specifications ................................................................................................... 4
2-3. Other Component Specifications.................................................................................................... 6
3. DIMENSIONAL DATA............................................................................................................................... 7
4. REFRIGERANT FLOW DIAGRAM .......................................................................................................... 8
5. PERFORMANCE DATA
5-1. Cooling Capacity ........................................................................................................................... 9
5-2. Heating Capacity ........................................................................................................................... 17
6. ELECTRICAL DATA
6-1. Electrical Characteristics ............................................................................................................... 18
6-2. Electrical Wiring Diagrams ............................................................................................................ 21
6-3. P.C.B. Ass'y (Printed Pattern) ........................................................................................................ 27
7. TROUBLESHOOTING
7-1. Check before and after troubleshooting ........................................................................................ 28
7-2. Air conditioner does not operate .................................................................................................... 29
7-3. Some part of air conditioner does not operate .............................................................................. 31
7-4. Air conditioner operates, but abnormalities are observed ............................................................. 33
7-5. If a sensor is defective ................................................................................................................... 34
8. CHECKING ELECTRICAL COMPONENTS
8-1. Measurement of Insulation Resistance .......................................................................................... 35
8-2. Checking Motor Capacitor .............................................................................................................. 36
8-3. Checking Fan Motor Winding ......................................................................................................... 36
8-4. Checking Compressor Motor Winding............................................................................................ 36
8-5. Checking Thermistor ...................................................................................................................... 36
9. DISASSEMBLY PROCEDURE
9-1. Removing Front Grille..................................................................................................................... 37
9-2. Removing Wall Sleeve ................................................................................................................... 37
9-3. Removing Electrical Component Box ............................................................................................. 37
9-4. Removing Electric Heater............................................................................................................... 38
9-5. Removing Blower Wheel ................................................................................................................ 39
9-6. Removing Evaporator..................................................................................................................... 39
9-7. Removing Condenser..................................................................................................................... 40
9-8. Removing Propeller Fan................................................................................................................. 40
9-9. Removing Fan Motor ...................................................................................................................... 41
10.FUNCTION
10-1. Room temperature Control ............................................................................................................ 42
10-2. Defrosting Operation (Heating)....................................................................................................... 45
.................................................................................................................................................. 46
APPENDIX
