Komatsu PC200-8M0 Shop Manual page 14

SEN06111-03
Testing (dual) pressure switch for refrigerant .............................................................................. 36
Testing relays .............................................................................................................................. 37
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
90 Diagrams and drawings
100 Hydraulic diagrams and drawings
Symbols in hydraulic circuit diagram ...........................................................................................
Hydraulic circuit diagram .............................................................................................................
200 Electrical diagrams and drawings
Symbols in electric circuit diagram ..............................................................................................
Electrical circuit diagram .............................................................................................................
12
00-100
Table of contents
SEN06153-00
SEN06154-00
PC200, 200LC, 220, 220LC-8M0
100 Index
2
5
2
5