Komatsu PC200-8M0 Shop Manual page 1160

100 Air conditioner
SEN06151-00
Troubleshooting chart 1............................................................................................................................... 38
Troubleshooting chart 2............................................................................................................................... 40
Information in troubleshooting table ............................................................................................................ 42
Failure code list related to air conditioner ................................................................................................... 43
Failure code [879AKA] A/C Inner sensor Open Circuit ............................................................................... 44
Failure code [879AKB] A/C Inner sensor Short Circuit ............................................................................... 45
Failure code [879BKA] A/C Outer sensor Open Circuit .............................................................................. 46
Failure code [879BKB] A/C Outer sensor Short Circuit............................................................................... 48
Failure code [879CKA] Ventilating sensor Open Circuit.............................................................................. 50
Failure code [879CKB] Ventilating sensor Short Circuit.............................................................................. 51
Failure code [879DKZ] Sunlight sensor Open or Short Circuit.................................................................... 52
Failure code [879EMC] Ventilating Damper Abnormality ............................................................................ 54
Failure code [879FMC] Air Mix Damper Abnormality.................................................................................. 55
Failure code [879GKX] Refrigerant Abnormality ......................................................................................... 56
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate).... 58
Troubleshooting for compressor and refrigerant system (Air is not cooled)................................................ 60
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) ................................ 63
Troubleshooting for FRESH/RECIRC air changeover................................................................................. 65
Troubleshooting with gauge pressure ......................................................................................................... 67
Connection of service tool........................................................................................................................... 69
Precautions for disconnecting and connecting air conditioner piping ......................................................... 71
Handling of compressor oil.......................................................................................................................... 73
Desiccant replacement procedure .............................................................................................................. 75
2
80-100 PC200, 200LC, 220, 220LC-8M0