Komatsu PC300-8M0 PC300LC-8M0 PC350-8M0 PC350LC-8M0 Shop Manual PDF

Description

Komatsu PC300-8M0 PC300LC-8M0 PC350-8M0 PC350LC-8M0 Excavator Shop Manual SEN06257-11 – PDF DOWNLOAD 

FILE DETAILS:

Komatsu PC300-8M0 PC300LC-8M0 PC350-8M0 PC350LC-8M0 Excavator Shop Manual SEN06257-11 – PDF DOWNLOAD 

Language : English
Pages : 1248
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu PC300-8M0 PC300LC-8M0 PC350-8M0 PC350LC-8M0 Excavator Shop Manual SEN06257-11 – PDF DOWNLOAD 

SERIAL NUMBERS
PC300- 80001 and up
PC300LC- 80001 and up
PC350- 80001 and up
PC350LC- 80001 and up

How to read the shop manual 1
Composition of shop manual
q This shop manual describes the technical information required for the services performed in a workshop.
The shop manual is divided into the following chapters for the convenience of use.
00. Index and foreword
q This section includes the index, foreword, safety and basic information.
01. Specification
q This section explains the specifications of the machine.
10. Structure, function and maintenance standard
q This section explains the structure, function, and maintenance standard values of each component. The
structure and function sub-section explains the structure and function of each component. It serves not
only to give an understanding of the structure, but also serves as reference material for troubleshooting.
The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
20. Standard value table
q The standard values for a new machine and trouble shooting are described. This standard value table is
used for testing and adjusting, and determining a failure at troubleshooting.
30. Testing and adjusting
q This section describes the measuring tools and how to measure, and how to adjust various parts. As for
the standard value and failure criterion, see the standard value table.
40. Troubleshooting
q This section describes the troubleshooting in a suspected area when a failure occurs and the remedy for
the failure. Troubleshooting is described by each failure mode.
50. Disassembly and assembly
q This section explains the procedures for removing, installing, disassembling, and assembling each part
or component and the special tools for the works as well as precautions for doing them safely. In addition,
tightening torque, and quantity and weight of coating material, oil, grease, and coolant required for
the works are also explained.
80. Appendix
q The structure and function, testing and adjusting, and troubleshooting for all of the other components or
equipment which can not be separately classified are explained together in the appendix.
90. Diagrams and drawings
q This section gives hydraulic circuit diagrams and electrical circuit diagrams.

TABLE OF CONTENTS:

Komatsu PC300-8M0 PC300LC-8M0 PC350-8M0 PC350LC-8M0 Excavator Shop Manual SEN06257-11 – PDF DOWNLOAD 

SERIAL NUMBERS
PC300- 80001 and up
PC300LC- 80001 and up
PC350- 80001 and up
PC350LC- 80001 and up

Cover 1
00 Index and foreword 3
100 Index 3
Composition of shop manual 4
Table of contents 6
200 Foreword and general information 17
Foreword, safety and general information 18
How to read the shop manual 25
Explanation of terms for maintenance standard 27
Handling equipment of fuel system devices 29
Handling of intake system parts 30
Handling of hydraulic equipment 31
Method of disconnecting and connectingof push-pull type coupler 33
Handling of electrical equipment 36
How to read electric wire code 45
Precautions when performing operation 48
Practical use of KOMTRAX 51
Standard tightening torque table 52
List of abbreviation 56
Conversion table 61
01 Specification 67
100 Specification and technical data 67
Specification dimension drawings 68
Specifications 70
Weight table 76
Table of fuel, coolant and lubricants 78
10 Structure, function andmaintenance standard 81
100 Engine and cooling system 81
Engine related parts 82
Radiator, oil cooler and aftercooler 83
200 Power train 85
Power train 86
Swing circle 87
Swing machinery 88
Final drive 90
Sprocket 92
300 Undercarriage and frame 95
Track frame and recoil spring 96
Idler 98
Carrier roller 100
Track roller 101
Track shoe 103
401 Hydraulic system, Part 1 107
Hydraulic equipment layout drawing 108
Hydraulic tank and filter 110
Hydraulic pump 112
402 Hydraulic system, Part 2 137
Control valve 138
CLSS 150
Functions and operation by valve 154
Attachment circuit selector valve 193
Hydraulic drift prevention valve 196
403 Hydraulic system, Part 3 203
Valve control 204
PPC valve 206
Solenoid valve 226
PPC accumulator 228
Anti-drop valve for boom 230
Anti-drop valve for arm 236
Center swivel joint 243
Travel motor 245
Swing motor 257
Work equipment cylinder 265
500 Work equipment 269
Work equipment 270
Dimensions of components 272
600 Electrical system 277
Engine control system 278
Electronic control system 287
Machine monitor system 312
Sensor 332
KOMTRAX system 335
20 Standard value table 343
100 Standard service value table 343
Standard value table for engine related parts 344
Standard value table for chassis related parts 345
30 Testing and adjusting 357
101 Testing and adjusting, Part 1 357
Tools for testing, adjusting and troubleshooting 359
Sketches of special tools 363
Testing engine speed 364
Testing air boost pressure 365
Testing exhaust gas color 366
Adjusting valve clearance 368
Testing compression pressure 370
Testing blowby pressure 374
Testing engine oil pressure 375
Testing fuel pressure 376
Handling during cylinder cutout operation 381
Handling during no-injection cranking operation 381
Testing fuel return rate and leakage 382
Bleeding air from fuel circuit 384
Checking fuel circuit for leakage 385
Testing and adjusting air compressor belt tension 386
Replacing fan belt 387
Replacing alternator belt 388
Testing clearance in swing circle bearings 389
Testing and adjusting track tension 390
Testing and adjusting oil pressure in work equipment, swing and travel circuit 391
Testing control circuit oil pressure 395
Testing and adjusting pump PC control circuit oil pressure 396
Testing and adjusting pump LS control circuit oil pressure 399
Testing solenoid valve output pressure 404
Testing PPC valve output pressure 408
Adjusting play of work equipment and swing PPC valves 409
Inspecting locations of hydraulic drift of work equipment 410
Releasing remaining pressure from hydraulic system 412
Testing oil leakage amount 416
Bleeding air from various parts 418
Testing and charging accumulator (manufactured by NOK) nitrogen gas pressure for attachment (low pressure side) 420
Testing and charging accumulator nitrogen gas pressure for attachment (high pressure side) 422
Replacing accumulator bladder on high pressure side for accumulator piping 424
102 Testing and adjusting, Part 2 431
Special functions of machine monitor 432
103 Testing and adjusting, Part 3 483
Handling voltage circuit of engine controller 484
Preparation work for troubleshooting of electrical system 485
Procedure for testing diodes 489
Pm clinic service 490
40 Troubleshooting 499
100 Failure code table and fuse locations 499
Failure codes table 500
Fuse locations 508
200 General Information on troubleshooting 511
Symptom and troubleshooting numbers 512
Sequence of events in troubleshooting 514
Checks before troubleshooting 516
Classification and procedures for troubleshooting 518
Symptom and troubleshooting numbers 520
Information in troubleshooting table 522
Connector list and layout 524
Connection table for connector pin numbers 534
T- branch box and T- branch adapter table 570
Troubleshooting method for open circuit in wiring harness of pressure sensor system 573
301 Troubleshooting by failure code, Part 1 577
Failure code [879AKA] A/C Inner Sensor Open Circuit 579
Failure code [879AKB] A/C Inner Sensor Short Circuit 579
Failure code [879BKA] A/C Outer Sensor Open Circuit 579
Failure code [879BKB] A/C Outer Sensor Short Circuit 579
Failure code [879CKA] Ventilating Sensor Open Circuit 579
Failure code [879CKB] Ventilating Sensor Short Circuit 580
Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit 580
Failure code [879EMC] Ventilation Damper Abnormality 580
Failure code [879FMC] Air Mix Damper Abnormality 580
Failure code [879GKX] Refrigerant Abnormality 580
Failure code [989L00] Engine Controller Lock Caution1 581
Failure code [989M00] Engine Controller Lock Caution2 582
Failure code [989N00] Engine Controller Lock Caution3 583
Failure code [AA10NX] Air Cleaner Clogging 584
Failure code [AB00KE] Charge Voltage Low 586
Failure code [B@BAZG] Eng Oil Press Low 588
Failure code [B@BAZK] Engine Oil Level Low 589
Failure code [B@BCNS] Eng Water Overheat 590
Failure code [B@BCZK] Radiator Coolant Level Low 592
Failure code [B@HANS] Hyd Oil Overheat 594
Failure code [CA111] ECM Critical Internal Failure 595
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 595
Failure code [CA122] Chg Air Press Sensor High Error 596
Failure code [CA123] Chg Air Press Sensor Low Error 598
Failure code [CA131] Throttle Sensor High Error 600
Failure code [CA132] Throttle Sensor Low Error 602
Failure code [CA144] Coolant Temp Sens High Error 604
Failure code [CA145] Coolant Temp Sens Low Error 606
Failure code [CA153] Chg Air Temp Sensor High Error 608
Failure code [CA154] Chg Air Temp Sensor Low Error 610
Failure code [CA155] Chg Air Temp High Speed Derate 612
Failure code [CA187] Sens Supply 2 Volt Low Error 614
Failure code [CA221] Ambient Press Sens High Error 616
Failure code [CA222] Ambient Press Sens Low Error 618
Failure code [CA227] Sens 2 Supply Volt High Error 620
Failure code [CA234] Eng Overspeed 620
Failure code [CA238] Ne Speed Sens Supply Volt Error 621
Failure code [CA271] IMV/PCV1 Short Error 622
Failure code [CA272] IMV/PCV1 Open Error 624
Failure code [CA281] Abnormal supply pump pressure balance 626
302 Troubleshooting by failure code, Part 2 629
Failure code [CA322] Inj #1(L#1) Open/Short Error 632
Failure code [CA323] Inj #5(L#5) Open/Short Error 634
Failure code [CA324] Inj #3(L#3) Open/Short Error 636
Failure code [CA325] Inj #6(L#6) Open/Short Error 638
Failure code [CA331] Inj #2(L#2) Open/Short Error 640
Failure code [CA332] Inj #4(L#4) Open/Short Error 642
Failure code [CA342] Calibration Code Incompatibility 644
Failure code [CA351] Injectors Drive Circuit Error 645
Failure code [CA352] Sens Supply 1 Volt Low Error 646
Failure code [CA386] Sens Supply 1 Volt High Error 648
Failure code [CA428] Water in Fuel Sensor High Error 650
Failure code [CA429] Water in Fuel Sensor Low Error 652
Failure code [CA435] Eng Oil Press Sw Error 654
Failure code [CA441] Battery Voltage Low Error 656
Failure code [CA442] Battery Voltage High Error 658
Failure code [CA449] Rail Press Very High Error 659
Failure code [CA451] Rail Press Sensor High Error 660
Failure code [CA452] Rail Press Sensor Low Error 662
Failure code [CA488] Chg Air Temp High Torque Derate 664
Failure code [CA553] Rail Press High Error 665
Failure code [CA559] Rail Press Low Error 666
Failure code [CA689] Eng Ne Speed Sensor Error 668
Failure code [CA731] Eng Bkup Speed Sens Phase Error 672
Failure code [CA757] All Continuous Data Lost Error 673
Failure code [CA778] Eng Bkup Speed Sensor Error 674
Failure code [CA2185] Throt Sens Sup Volt High Error 677
Failure code [CA2186] Throt Sens Sup Volt Low Error 678
Failure code [CA2249] Rail Press Very Low Error 679
Failure code [CA2265] Fuel Feed Pump Open Error 680
Failure code [CA2266] Fuel Feed Pump Short Error 682
Failure code [CA2311] lMV Solenoid Error 683
Failure code [CA2555] Grid Htr Relay Open Circuit Error 684
Failure code [CA2556] Grid Htr Relay Short Circuit Error 686
303 Troubleshooting by failure code, Part 3 689
Failure code [D110KB] Battery Relay Drive Short Circuit 692
Failure code [D19JKZ] Personal Code Relay Abnormality 694
Failure code [D811MC] KOMTRAX Error 696
Failure code [D862KA] GPS Antenna Open Circuit 697
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) 698
Failure code [DA22KK] Pump Solenoid Power Low Error 700
Failure code [DA25KP] 5V Sensor 1 Power Abnormality 702
Failure code [DA26KP] 5V Sensor 2 Power Abnormality 704
Failure code [DA29KQ] Model Selection Abnormality 706
Failure code [DA2QKR] CAN2 Discon (Pump Con) 708
Failure code [DAF0MB] Monitor ROM Abnormality 711
Failure code [DAF0MC] Monitor Error 712
Failure code [DAF8KB] Camera Power Supply Short Circuit 714
Failure code [DAF9KQ] Model Selection Abnormality 716
Failure code [DAFGMC] GPS Module Error 717
Failure code [DAFQKR] CAN2 Discon 718
Failure code [DAZ9KQ] A/C Model Selection Abnormality 719
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 720
Failure code [DB2QKR] CAN2 Discon (Engine Con) 722
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit 726
Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit 728
Failure code [DHPAMA] F Pump Press Sensor Abnormality 730
Failure code [DHPBMA] R Pump Press Sensor Abnormality 732
304 Troubleshooting by failure code, Part 4 735
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality 738
Failure code [DHS4MA] Bucket CURL PPC Press Sensor Abnormality 740
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality 742
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality 744
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality 746
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality 748
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality 750
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 752
Failure code [DHSFMA] Travel FW L PPC Press Sensor Abnormality 754
Failure code [DHSGMA] Travel FW R PPC Press Sensor Abnormality 756
Failure code [DHSHMA] Travel BW L PPC Press Sensor Abnormality 758
Failure code [DHSJMA] Travel BW R PPC Press Sensor Abnormality 760
Failure code [DHX1MA] Overload Sensor Abnormality 762
Failure code [DR21KX] Camera 2 Picture Rev Drive Abnormality 764
Failure code [DR31KX] Camera 3 Picture Rev Drive Abnormality 766
Failure code [DV20KB] Travel Alarm Short Circuit 768
Failure code [DW43KA] Travel Speed Sol Open Circuit 770
Failure code [DW43KB] Travel Speed Sol Short Circuit 772
Failure code [DW45KA] Swing Brake Sol Valve Open Circuit 774
Failure code [DW45KB] Swing Brake Sol Short Circuit 776
Failure code [DW91KA] Travel Neutral Sol Open Circuit 778
Failure code [DW91KB] Travel Neutral Sol Short Circuit 780
305 Troubleshooting by failure code, Part 5 783
Failure code [DWA2KA] Attachment Sol Open Circuit 784
Failure code [DWA2KB] Attachment Sol Short Circuit 786
Failure code [DWJ0KA] Merge-divider Sol Open Circuit 788
Failure code [DWJ0KB] Merge-divider Sol Short Circuit 790
Failure code [DWK0KA] 2-stage Relief Sol Open Circuit 792
Failure code [DWK0KB] 2-stage Relief Sol Short Circuit 794
Failure code [DWK2KA] Variable Back Press Sol Open Circuit 796
Failure code [DWK2KB] Variable Back Press Sol Short Circuit 798
Failure code [DXA8KA] PC-EPC Sol Open Circuit 800
Failure code [DXA8KB] PC-EPC Sol Short Circuit 802
Failure code [DXE0KA] LS-EPC Sol Open Circuit 804
Failure code [DXE0KB] LS-EPC Sol Short Circuit 806
Failure code [DXE4KA] Attachment Flow EPC Open Circuit 808
Failure code [DXE4KB] Attachment Flow EPC Short Circuit 810
Failure code [DY20KA] Wiper Working Abnormality 812
Failure code [DY20MA] Wiper Parking Abnormality 814
Failure code [DY2CKB] Washer Drive Short Circuit 816
Failure code [DY2DKB] Wiper Drive (Fwd) Short 818
Failure code [DY2EKB] Wiper Drive (Rev) Short 820
400 Troubleshooting of electrical system (E-mode) 823
Fuse locations 826
Information contained in troubleshooting table 828
E-1 Engine does not start (Engine does not crank) 830
E-2 Preheater does not operate 835
E-3 When starting switch is turned to ON position, machine monitor displays nothing 839
E-4 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up 842
E-5 Precaution monitor lights up while engine is running 843
E-6 Emergency stop monitor lights up while engine is running 845
E-7 Fuel level gauge does not indicate properly 846
E-8 Engine coolant temperature gauge does not indicate properly 848
E-9 Hydraulic oil temperature gauge does not indicate properly 849
E-10 Displays on machine monitor are different from those for actual machine 852
E-11 Some areas of machine monitor screen are not displayed 853
E-12 Function switch does not operate 853
E-13 Automatic warm-up system does not operate (in cold season) 854
E-14 Auto-decelerator does not operate properly 855
E-15 Working mode does not change 856
E-16 Travel speed does not change 857
E-17 Alarm buzzer cannot be canceled 858
E-18 When starting switch is turned OFF, service meter is not displayed 858
E-19 Service mode cannot be selected 858
E-20 Any of work equipment, swing and travel do not operate or cannot be locked 859
E-21 Swing holding brake does not operate properly 861
E-22 One-touch power maximizing function does not operate properly 864
E-23 Travel alarm does not sound or does not stop sounding 867
E-24 Horn does not sound or does not stop 868
E-25 Windshield wiper and window washer do not operate 870
E-26 Machine push-up function cannot be canceled 872
E-27 Machine push-up function does not operate 874
E-28 BOOM DOWN indicator is not displayed properly with monitoring function 875
E-29 ARM DUMP indicator is not displayed properly with monitoring function 875
E-30 ARM IN indicator is not displayed properly with monitoring function 875
E-31 BOOM RAISE indicator is not displayed properly with monitoring function 876
E-32 BUCKET CURL indicator is not displayed properly with monitoring function 876
E-33 BUCKET DUMP indicator is not displayed properly with monitoring function 876
E-34 SWING indicator is not displayed properly with monitoring function 877
E-35 TRAVEL indicator is not displayed properly with monitoring function 877
E-36 ATTACHMENT indicator is not displayed properly with monitoring function 878
E-37 Attachment hydraulic circuit cannot be changed 880
E-38 KOMTRAX system does not operate properly 881
500 Troubleshooting of hydraulic and mechanical system (H-mode) 883
System chart for hydraulic and mechanical system 886
Information contained in troubleshooting table 888
H-1 All work equipment lack power, or travel and swing speeds are slow 890
H-2 Engine speed sharply drops or engine stalls 892
H-3 No work equipment, swing or travel move 893
H-4 Abnormal noise is heard from around hydraulic pump 893
H-5 Auto-decelerator does not work 894
H-6 Fine control mode does not function or responds slow 894
H-7 Boom moves slowly or lacks power 895
H-8 Arm moves slowly or lacks power 896
H-9 Bucket moves slowly or lacks power 897
H-10 Work equipment does not move in its single operation 897
H-11 Work equipment has a bit too fast hydraulic drift 898
H-12 Work equipment has big time lag 900
H-13 Other work equipment moves when relieving single circuit 900
H-14 Power max switch does not operate 901
H-15 In compound operation, work equipment with larger load moves slowly 901
H-16 In swing + boom RAISE operation, boom moves slowly 902
H-17 In swing + travel operation, travel speed drops sharply 902
H-18 Machine swerves in travel 903
H-19 Machine travels slowly 904
H-20 Machine cannot be easily steered or lacks power 905
H-21 Travel speed does not shift, or it is too slow or fast 906
H-22 Track shoe does not turn (on one side only) 907
H-23 Machine does not swing 908
H-24 Swing acceleration is poor, or swing speed is slow 910
H-25 Excessive overrun when stopping swing 912
H-26 There is big shock when stopping swing 913
H-27 Large sound is made when upper structure stops swinging 913
H-28 Swing hydraulic drift is too big 914
600 Troubleshooting of engine (S-mode) 917
Method of using troubleshooting charts 919
S-1 Starting performance is poor 922
S-2 Engine does not start 923
S-3 Engine does not pick up smoothly 926
S-4 Engine stops during operations 927
S-5 Engine does not rotate smoothly 928
S-6 Engine lacks output (or lacks power) 929
S-7 Exhaust smoke is black (incomplete combustion) 930
S-8 Oil consumption is excessive (or exhaust smoke is blue) 931
S-9 Oil becomes contaminated quickly 932
S-10 Fuel consumption is excessive 933
S-11 Oil is in coolant (or coolant spurts back, or coolant level goes down) 934
S-12 Oil pressure drops 935
S-13 Oil level rises (water, fuel in oil) 936
S-14 Coolant temperature becomes too high (overheating) 937
S-15 Abnormal noise is made 938
S-16 Vibration is excessive 939
50 Disassembly and assembly 941
100 Related information on disassembly and assembly 941
How to read this manual 942
Coating materials list 944
Special tools list 948
Sketches of special tools 952
200 Engine and cooling system 957
Removal and installation of supply pump assembly 958
Removal and installation of engine front oil seal 962
Removal and installation of engine rear oil seal 965
Removal and installation of cylinder head assembly 970
Removal and installation of radiator assembly 984
Removal and installation of hydraulic oil cooler assembly 986
Removal and installation of aftercooler assembly 988
Removal and installation of engine and hydraulic pump assembly 990
300 Power train system 997
Removal and installation of travel motor and final drive assembly 998
Disassembly and assembly of final drive assembly 999
Removal and installation of swing motor and swing machinery assembly 1009
Disassembly and assembly of swing motor and swing machinery assembly 1010
Removal and installation of swing circle assembl 1018
400 Undercarriage and frame 1021
Disassembly and assembly of carrier roller assembly 1022
Disassembly and assembly of track roller assembly 1025
Removal and installation of idler and idler cushion assembly 1027
Disassembly and assembly of idler assembly 1028
Disassembly and assembly of recoil spring assembly 1031
Removal and installation of sprocket 1033
Separation and connection of track assembly 1034
Removal and installation of revolving frame assembly 1038
Removal and installation of counterweight assembly 1040
500 Hydraulic system 1045
Removal and installation of center swivel joint assembly 1046
Disassembly and assembly of center swivel joint assembly 1048
Removal and installation of hydraulic tank assembly 1049
Removal and installation of control valve assembly 1051
Disassembly and assembly of control valve assembly 1054
Removal and installation of hydraulic pump assembly 1059
Removal and installation of hydraulic pump input shaft oil seal 1062
Disassembly and assembly of work equipment PPC valve assembly 1063
Disassembly and assembly of travel PPC valve assembly 1065
Disassembly and assembly of work equipment cylinder assembly 1067
600 Work equipment 1075
Removal and installation of work equipment assembly 1076
Removal and installation of anti-drop valve assembly for boom 1079
Removal and installation of anti-drop valve assembly for arm 1082
Disassembly and assembly of anti-drop valve assembly 1084
700 Cab and its attachments 1087
Removal and installation of operator’s cab assembly 1088
Removal and installation of operator’s cab glass (adhered window glass) 1091
Removal and installation of front window assembly 1100
Removal and installation of floor frame assembly 1106
Removal and installation of work equipment control lever assembly 1110
800 Electrical system 1125
Removal and installation of air conditioner unit assembly 1126
Removal and installation of KOMTRAX terminal assembly 1131
Removal and installation of machine monitor assembly 1133
Removal and installation of pump controller assembly 1135
Removal and installation of engine controller assembly 1137
80 Appendix 1139
100 Air conditioner 1139
Precautions for refrigerant 1141
Air conditioner component 1142
Configuration and function of refrigeration cycle 1144
Outline of refrigeration cycle 1145
Air conditioner unit 1147
Air conditioner controller 1153
Compressor 1154
Condenser 1155
Receiver drier 1156
Sensor 1157
Procedure for testing and troubleshooting 1158
Circuit diagram and arrangement of connector pins 1160
System diagram 1162
Parts and connectors layout 1164
Testing air leakage (duct) 1167
Testing with self-diagnosis function 1169
Testing vent (mode) changeover 1171
Testing FRESH/RECIRC air changeover 1172
Testing sunlight sensor 1173
Testing (dual) pressure switch for refrigerant 1174
Testing relays 1175
Troubleshooting chart 1 1176
Troubleshooting chart 2 1178
Information in troubleshooting table 1180
Failure code list related to air conditioner 1181
Failure code [879AKA] A/C Inner sensor Open Circuit 1182
Failure code [879AKB] A/C Inner sensor Short Circuit 1183
Failure code [879BKA] A/C Outer sensor Open Circuit 1184
Failure code [879BKB] A/C Outer sensor Short Circuit 1186
Failure code [879CKA] Ventilating sensor Open Circuit 1188
Failure code [879CKB] Ventilating sensor Short Circuit 1189
Failure code [879DKZ] Sunlight sensor Open or Short Circuit 1190
Failure code [879EMC] Ventilating Damper Abnormality 1192
Failure code [879FMC] Air Mix Damper Abnormality 1193
Failure code [879GKX] Refrigerant Abnormality 1194
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate) 1196
Troubleshooting for compressor and refrigerant system (Air is not cooled) 1198
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 1202
Troubleshooting for FRESH/RECIRC air changeover 1204
Troubleshooting with gauge pressure 1206
Connection of service tool 1208
Precautions for disconnecting and connecting air conditioner piping 1210
Handling of compressor oil 1212
90 Diagrams and drawings 1215
100 Hydraulic diagrams and drawings 1215
Symbols in hydraulic circuit diagram 1216
Hydraulic circuit diagram 1219
200 Electrical diagrams and drawings 1223
Symbols in electric circuit diagram 1224
Electrical circuit diagram 1227

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S.V  17/12/24