Table of Contents
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100 Index
Table of contents
Air conditioner component.............................................................................................................................
Configuration and function of refrigerating cycle ...........................................................................................
Outline of refrigerating cycle..........................................................................................................................
Air conditioner unit......................................................................................................................................... 10
Control plate .................................................................................................................................................. 14
Compressor ................................................................................................................................................... 15
Condenser ..................................................................................................................................................... 16
Receiver drier ................................................................................................................................................ 17
Testing, adjusting and troubleshooting.............................................................................................................. 18
Caution about refrigerant............................................................................................................................... 18
Troubleshooting procedure............................................................................................................................ 19
Block diagram................................................................................................................................................ 20
Circuit diagram and arrangement of connector pins...................................................................................... 22
Detail of air conditioner unit ........................................................................................................................... 24
Parts and connectors arrangement ............................................................................................................... 26
Testing air leakage (duct) .............................................................................................................................. 32
Testing with self-diagnosis function ............................................................................................................... 34
Testing temperature control ........................................................................................................................... 37
Testing vent (mode) changeover ................................................................................................................... 39
Testing Recirc/Fresh changeover .................................................................................................................. 42
Testing inner sensor ...................................................................................................................................... 43
Testing evaporator temperature sensor......................................................................................................... 44
Testing sunlight sensor .................................................................................................................................. 47
Testing (dual) pressure switch for refrigerant ................................................................................................ 48
Testing relays and diodes .............................................................................................................................. 50
Troubleshooting chart 1 ................................................................................................................................. 52
Troubleshooting chart 2 ................................................................................................................................. 53
Troubleshooting for electrical system (E mode) ............................................................................................ 56
E-1 Power supply system (Air conditioner does not operate)..................................................................... 57
E-2 Compressor and refrigerant system (Air is not cooled)........................................................................ 60
E-3 Blower motor system (No air comes out or air flow is abnormal)......................................................... 63
E-4 Temperature cannot be controlled ....................................................................................................... 66
E-5 Vent (mode) cannot be changed over.................................................................................................. 68
E-6 Recirc/Fresh air cannot be changed over ............................................................................................ 70
Troubleshooting with gauge pressure............................................................................................................ 72
Connection of service tool ............................................................................................................................. 75
Precautions for connecting air conditioner piping.......................................................................................... 76
Handling of compressor oil ............................................................................................................................ 77
1. Control of compressor oil (Denso: ND-OIL8: For R134a)..................................................................... 77
2. Adding of compressor oil ...................................................................................................................... 77
3. Compressor replacement ..................................................................................................................... 78
4. Applying compressor oil for O-ring ....................................................................................................... 78
90 Diagrams and drawings
100 Hydraulic diagrams and drawings ............................................................................................. SEN04934-02
Power train hydraulic circuit diagram.............................................................................................................
Work equipment hydraulic circuit diagram.....................................................................................................
200 Electrical diagrams and drawings.............................................................................................. SEN04935-03
Electrical circuit diagram................................................................................................................................
Electrical circuit diagram (sand terrain specification) .................................................................................... 45
Electrical circuit diagram (FRP canopy specification).................................................................................... 51
D65EX, PX, WX-16
SEN04931-14
4
6
7
3
7
3
13
00-100
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