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00 Index and foreword
Index
Hydraulic tank.................................................................................................................... 60-24
Main pump ........................................................................................................................ 60-25
Control valve ..................................................................................................................... 60-26
Travel motor ...................................................................................................................... 60-36
PPC valve ......................................................................................................................... 60-39
Solenoid valve ................................................................................................................... 60-49
Attachment circuit selector valve (for high-pressure circuit) .................................................... 60-50
Attachment circuit selector valve (for low-pressure circuit) ..................................................... 60-51
Center swivel joint .............................................................................................................. 60-52
Work equipment ....................................................................................................................... 60-53
Work equipment................................................................................................................. 60-53
Work equipment cylinder .................................................................................................... 60-62
80 Appendix...................................................................................................................................... 80-1
Table of contents ........................................................................................................................ 80-2
Air conditioner components ......................................................................................................... 80-3
Precautions for refrigerant..................................................................................................... 80-3
Air conditioner component .................................................................................................... 80-4
Configuration and function of refrigeration cycle...................................................................... 80-7
Outline of refrigeration cycle.................................................................................................. 80-8
Air conditioner unit ............................................................................................................. 80-10
Dual pressure switch .......................................................................................................... 80-17
Air conditioner controller ..................................................................................................... 80-18
Compressor....................................................................................................................... 80-19
Air conditioner condenser ................................................................................................... 80-20
Sunlight sensor .................................................................................................................. 80-22
Outer temperature sensor (outside air temperature sensor) ................................................... 80-23
Procedure for testing and troubleshooting ............................................................................ 80-24
Circuit diagram and arrangement of connector pins............................................................... 80-26
System diagram................................................................................................................. 80-28
Parts and connectors layout................................................................................................ 80-31
Testing air leakage (duct) .................................................................................................... 80-35
Testing with self-diagnosis function ...................................................................................... 80-38
Testing vent (mode) changeover.......................................................................................... 80-41
Testing FRESH/RECIRC air changeover.............................................................................. 80-43
Testing sunlight sensor ....................................................................................................... 80-44
Testing (dual) pressure switch for refrigerant......................................................................... 80-45
Testing relays .................................................................................................................... 80-46
Troubleshooting chart 1 ...................................................................................................... 80-47
Troubleshooting chart 2 ...................................................................................................... 80-48
Information in troubleshooting table ..................................................................................... 80-51
Failure code list related to air conditioner.............................................................................. 80-52
Failure code [879AKA] A/C Inner Sensor Open Circuit .......................................................... 80-53
Failure code [879AKB] A/C Inner Sensor Short Circuit........................................................... 80-54
Failure code [879BKA] A/C Outer sensor Open Circuit .......................................................... 80-55
Failure code [879BKB] A/C Outer sensor Short Circuit .......................................................... 80-57
Failure code [879CKA] Ventilating Sensor Open Circuit ......................................................... 80-59
Failure code [879CKB] Ventilating Sensor Short Circuit ......................................................... 80-60
Failure code [879DKZ] Sunlight sensor Open or Short Circuit ................................................ 80-61
Failure code [879EMC] Ventilation Damper Abnormality ........................................................ 80-63
Failure code [879FMC] Air Mix Damper Abnormality ............................................................. 80-64
Failure code [879GKX] Refrigerant Abnormality .................................................................... 80-65
A-1 Troubleshooting for power supply system (Air conditioner does not operate) ..................... 80-66
A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled) ........................ 80-68
A-3 Troubleshooting for blower motor system (No air comes out or air flow is
abnormal) ............................................................................................................ 80-71
A-4 Troubleshooting for FRESH/RECIRC air changeover ...................................................... 80-73
Troubleshooting with gauge pressure................................................................................... 80-75
Connection of service tool................................................................................................... 80-78
Precautions for disconnecting and connecting air conditioner piping ....................................... 80-80
00-14
HB215LC-2
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