Table Of Contents - Technibel MCAV77R5VAA 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.................................................................................................... 13
3. DIMENSIONAL DATA.............................................................................................................................. 14
4. REFRIGERANT FLOW DIAGRAM ......................................................................................................... 17
5. PERFORMANCE DATA
5-1. Performance charts ....................................................................................................................... 19
5-2. Air Throw Distance Chart .............................................................................................................. 22
5-3. Heating Capacity ........................................................................................................................... 26
6. ELECTRICAL DATA
6-1. Electrical Characteristics ................................................................................................................ 27
6-2. Electric Wiring Diagram .................................................................................................................. 31
7. FUNCTION
7-1. Room Temperature Control ........................................................................................................... 34
7-2. Dry Operation ................................................................................................................................ 36
7-3. Automatic Switching between Cooling and Heating ...................................................................... 36
7-4. Freeze Prevention ......................................................................................................................... 37
7-5. Overload Prevention ...................................................................................................................... 38
7-6. Cold Draft Prevention .................................................................................................................... 39
7-7. Defrosting Operation ..................................................................................................................... 40
8. TROUBLESHOOTING
8-1. Check before and after troubleshooting ........................................................................................ 42
8-2. Air conditioner does not operate .................................................................................................... 43
8-3. Some part of air conditioner does not operate .............................................................................. 47
8-4. Air conditioner operates, but abnormalities are observed ............................................................. 49
8-5. If a sensor is defective ................................................................................................................... 51
9. CHECKING ELECTRICAL COMPONENTS
9-1. Measurement of Insulation Resistance .......................................................................................... 52
9-2. Checking Continuity of Fuse on PCB Ass'y.................................................................................... 53
9-3. Checking Motor Capacitor ............................................................................................................. 53
10. DISASSEMBLY PROCEDURE FOR INDOOR UNIT
10-1. Removing Air Intake Grille ........................................................................................................... 54
10-2. Removing Side Panels ................................................................................................................ 55
10-3. Access and Removal of Electrical Component Box .................................................................... 55
10-4. Removing Flap Motor .................................................................................................................. 56
10-5. Removing Evaporator .................................................................................................................. 56
10-6. Removing Fan and Fan Motor ..................................................................................................... 58

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