Table Of Contents - Sanyo STW-2 Series Technical & Service Manual

1. OPERATING RANGE ............................................................................................................................... 1
2. SPECIFICATIONS
2-1. Unit Specifications .......................................................................................................................... 2
2-2. Major Component Specifications ................................................................................................... 6
2-3. Other Component Specifications.................................................................................................... 10
3. DIMENSIONAL DATA............................................................................................................................... 11
4. REFRIGERANT FLOW DIAGRAM .......................................................................................................... 12
5. PERFORMANCE DATA
5-1. Cooling Capacity ........................................................................................................................... 13
5-2. Heating Capacity (Heat Pump Performance) ................................................................................ 29
6. ELECTRICAL DATA
6-1. Electrical Characteristics ............................................................................................................... 30
6-2. Electrical Wiring Diagrams ............................................................................................................ 34
6-3. Electrical Parts Layout ................................................................................................................... 38
6-4. P.C.B. Ass'y (Printed Pattern) ........................................................................................................ 39
7. TROUBLESHOOTING
7-1. Check before and after troubleshooting ........................................................................................ 40
7-2. Air conditioner does not operate .................................................................................................... 41
7-3. Some part of air conditioner does not operate .............................................................................. 43
7-4. Air conditioner operates, but abnormalities are observed ............................................................. 45
7-5. If a sensor is defective ................................................................................................................... 46
8. CHECKING ELECTRICAL COMPONENTS
8-1. Measurement of Insulation Resistance .......................................................................................... 47
8-2. Checking Motor Capacitor .............................................................................................................. 48
8-3. Checking Fan Motor Winding ......................................................................................................... 48
8-4. Checking Compressor Motor Winding............................................................................................ 48
8-5. Checking Thermistor ...................................................................................................................... 48
9. DISASSEMBLY PROCEDURE
9-1. Removing Front Grille..................................................................................................................... 49
9-2. Removing Wall Sleeve ................................................................................................................... 49
9-3. Removing Electrical Junction Box .................................................................................................. 49
9-4. Removing Electric Heater............................................................................................................... 50
9-5. Removing Indoor Fan ..................................................................................................................... 51
9-6. Removing Indoor Fan Motor........................................................................................................... 52
9-7. Removing Evaporator..................................................................................................................... 52
9-8. Removing Condenser..................................................................................................................... 53
9-9. Removing Propeller Fan................................................................................................................. 54
9-10. Removing Outdoor Fan Motor ........................................................................................................ 54
10. FUNCTION
10-1. Room temperature Control ............................................................................................................ 55
10-2. Freeze Prevention ......................................................................................................................... 57
10-3. Freeze Protection .......................................................................................................................... 57
10-4. Defrosting Operation (Heating)....................................................................................................... 58
APPENDIX
.................................................................................................................................................. 59

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