Komatsu PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 PDF
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Komatsu PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 – PDF DOWNLOAD
PC350LC-N360001 and up
Description
Komatsu PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 – PDF DOWNLOAD
FILE DETAILS:
Komatsu PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 – PDF DOWNLOAD
Language : English
Pages : 1176
Downloadable : Yes
File Type : PDF
DESCRIPTION:
Komatsu PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 – PDF DOWNLOAD
PC350LC-N360001 and up
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 PC300LC-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual SEN06257-03-NI00 – PDF DOWNLOAD
PC350LC-N360001 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 0
Center swivel joint 236
Travel motor 238
Swing motor 250
Work equipment cylinder 258
500 Work equipment 262
Work equipment 263
Dimensions of components 265
600 Electrical system 270
Engine control system 271
Electronic control system 280
Machine monitor system 305
Sensor 325
KOMTRAX system 328
20 Standard value table 336
100 Standard service value table 336
Standard value table for engine related parts 337
Standard value table for chassis related parts 338
30 Testing and adjusting 350
101 Testing and adjusting, Part 1 350
Tools for testing, adjusting and troubleshooting 352
Sketches of special tools 356
Testing engine speed 357
Testing air boost pressure 358
Testing exhaust gas color 359
Adjusting valve clearance 361
Testing compression pressure 363
Testing blowby pressure 367
Testing engine oil pressure 368
Testing fuel pressure 369
Handling during cylinder cutout operation 374
Handling during no-injection cranking operation 374
Testing fuel return rate and leakage 375
Bleeding air from fuel circuit 377
Checking fuel circuit for leakage 378
Testing and adjusting air compressor belt tension 379
Replacing fan belt 380
Replacing alternator belt 381
Testing clearance in swing circle bearings 382
Testing and adjusting track tension 383
Testing and adjusting oil pressure in work equipment, swing and travel circuit 384
Testing control circuit oil pressure 388
Testing and adjusting pump PC control circuit oil pressure 389
Testing and adjusting pump LS control circuit oil pressure 392
Testing solenoid valve output pressure 397
Testing PPC valve output pressure 401
Adjusting play of work equipment and swing PPC valves 402
Inspecting locations of hydraulic drift of work equipment 403
Releasing remaining pressure in hydraulic circuit 405
Testing oil leakage amount 406
Bleeding air from various parts 408
102 Testing and adjusting, Part 2 412
Special functions of machine monitor 413
103 Testing and adjusting, Part 3 464
Handling voltage circuit of engine controller 465
Preparation work for troubleshooting of electrical system 466
Procedure for testing diodes 470
Pm clinic service 471
40 Troubleshooting 480
100 Failure code table and fuse locations 480
Failure codes table 481
Fuse locations 489
200 General Information on troubleshooting 492
Symptom and troubleshooting numbers 493
Sequence of events in troubleshooting 495
Checks before troubleshooting 497
Classification and procedures for troubleshooting 499
Symptom and troubleshooting numbers 501
Information in troubleshooting table 503
Connector list and layout 505
Connection table for connector pin numbers 515
T- branch box and T- branch adapter table 551
Troubleshooting method for open circuit in wiring harness of pressure sensor system 554
301 Troubleshooting by failure code, Part 1 558
Failure code [879AKA] A/C Inner Sensor Open Circuit 560
Failure code [879AKB] A/C Inner Sensor Short Circuit 560
Failure code [879BKA] A/C Outer Sensor Open Circuit 560
Failure code [879BKB] A/C Outer Sensor Short Circuit 560
Failure code [879CKA] Ventilating Sensor Open Circuit 560
Failure code [879CKB] Ventilating Sensor Short Circuit 561
Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit 561
Failure code [879EMC] Ventilation Damper Abnormality 561
Failure code [879FMC] Air Mix Damper Abnormality 561
Failure code [879GKX] Refrigerant Abnormality 561
Failure code [989L00] Engine Controller Lock Caution1 562
Failure code [989M00] Engine Controller Lock Caution2 563
Failure code [989N00] Engine Controller Lock Caution3 564
Failure code [AA10NX] Air Cleaner Clogging 565
Failure code [AB00KE] Charge Voltage Low 567
Failure code [B@BAZG] Eng Oil Press Low 569
Failure code [B@BAZK] Engine Oil Level Low 570
Failure code [B@BCNS] Eng Water Overheat 571
Failure code [B@BCZK] Radiator Coolant Level Low 573
Failure code [B@HANS] Hyd Oil Overheat 575
Failure code [CA111] ECM Critical Internal Failure 576
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 576
Failure code [CA122] Chg Air Press Sensor High Error 577
Failure code [CA123] Chg Air Press Sensor Low Error 579
Failure code [CA131] Throttle Sensor High Error 581
Failure code [CA132] Throttle Sensor Low Error 583
Failure code [CA144] Coolant Temp Sens High Error 585
Failure code [CA145] Coolant Temp Sens Low Error 587
Failure code [CA153] Chg Air Temp Sensor High Error 589
Failure code [CA154] Chg Air Temp Sensor Low Error 591
Failure code [CA155] Chg Air Temp High Speed Derate 593
Failure code [CA187] Sens Supply 2 Volt Low Error 595
Failure code [CA221] Ambient Press Sens High Error 597
Failure code [CA222] Ambient Press Sens Low Error 599
Failure code [CA227] Sens 2 Supply Volt High Error 601
Failure code [CA234] Eng Overspeed 601
Failure code [CA238] Ne Speed Sens Supply Volt Error 602
Failure code [CA271] IMV/PCV1 Short Error 603
Failure code [CA272] IMV/PCV1 Open Error 605
Failure code [CA281] Abnormal supply pump pressure balance 607
302 Troubleshooting by failure code, Part 2 610
Failure code [CA322] Inj #1(L#1) Open/Short Error 613
Failure code [CA323] Inj #5(L#5) Open/Short Error 615
Failure code [CA324] Inj #3(L#3) Open/Short Error 617
Failure code [CA325] Inj #6(L#6) Open/Short Error 619
Failure code [CA331] Inj #2(L#2) Open/Short Error 621
Failure code [CA332] Inj #4(L#4) Open/Short Error 623
Failure code [CA342] Calibration Code Incompatibility 625
Failure code [CA351] Injectors Drive Circuit Error 626
Failure code [CA352] Sens Supply 1 Volt Low Error 627
Failure code [CA386] Sens Supply 1 Volt High Error 629
Failure code [CA428] Water in Fuel Sensor High Error 631
Failure code [CA429] Water in Fuel Sensor Low Error 633
Failure code [CA435] Eng Oil Press Sw Error 635
Failure code [CA441] Battery Voltage Low Error 637
Failure code [CA442] Battery Voltage High Error 639
Failure code [CA449] Rail Press Very High Error 640
Failure code [CA451] Rail Press Sensor High Error 641
Failure code [CA452] Rail Press Sensor Low Error 643
Failure code [CA488] Chg Air Temp High Torque Derate 645
Failure code [CA553] Rail Press High Error 646
Failure code [CA559] Rail Press Low Error 647
Failure code [CA689] Eng Ne Speed Sensor Error 649
Failure code [CA731] Eng Bkup Speed Sens Phase Error 653
Failure code [CA757] All Continuous Data Lost Error 654
Failure code [CA778] Eng Bkup Speed Sensor Error 655
Failure code [CA2185] Throt Sens Sup Volt High Error 658
Failure code [CA2186] Throt Sens Sup Volt Low Error 659
Failure code [CA2249] Rail Press Very Low Error 660
Failure code [CA2265] Fuel Feed Pump Open Error 661
Failure code [CA2266] Fuel Feed Pump Short Error 663
Failure code [CA2311] lMV Solenoid Error 664
Failure code [CA2555] Grid Htr Relay Open Circuit Error 665
Failure code [CA2556] Grid Htr Relay Short Circuit Error 667
303 Troubleshooting by failure code, Part 3 670
Failure code [D110KB] Battery Relay Drive Short Circuit 673
Failure code [D19JKZ] Personal Code Relay Abnormality 675
Failure code [D811MC] KOMTRAX Error 677
Failure code [D862KA] GPS Antenna Open Circuit 678
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) 679
Failure code [DA22KK] Pump Solenoid Power Low Error 681
Failure code [DA25KP] 5V Sensor 1 Power Abnormality 683
Failure code [DA26KP] 5V Sensor 2 Power Abnormality 685
Failure code [DA29KQ] Model Selection Abnormality 687
Failure code [DA2QKR] CAN2 Discon (Pump Con) 689
Failure code [DAF0MB] Monitor ROM Abnormality 692
Failure code [DAF0MC] Monitor Error 693
Failure code [DAF8KB] Camera Power Supply Short Circuit 695
Failure code [DAF9KQ] Model Selection Abnormality 697
Failure code [DAFGMC] GPS Module Error 698
Failure code [DAFQKR] CAN2 Discon 699
Failure code [DAZ9KQ] A/C Model Selection Abnormality 700
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 701
Failure code [DB2QKR] CAN2 Discon (Engine Con) 703
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit 707
Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit 709
Failure code [DHPAMA] F Pump Press Sensor Abnormality 711
Failure code [DHPBMA] R Pump Press Sensor Abnormality 713
304 Troubleshooting by failure code, Part 4 716
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality 719
Failure code [DHS4MA] Bucket CURL PPC Press Sensor Abnormality 721
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality 723
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality 725
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality 727
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality 729
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality 731
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 733
Failure code [DHSFMA] Travel FW L PPC Press Sensor Abnormality 735
Failure code [DHSGMA] Travel FW R PPC Press Sensor Abnormality 737
Failure code [DHSHMA] Travel BW L PPC Press Sensor Abnormality 739
Failure code [DHSJMA] Travel BW R PPC Press Sensor Abnormality 741
Failure code [DHX1MA] Overload Sensor Abnormality 743
Failure code [DR21KX] Camera 2 Picture Rev Drive Abnormality 745
Failure code [DR31KX] Camera 3 Picture Rev Drive Abnormality 747
Failure code [DV20KB] Travel Alarm Short Circuit 0
Failure code [DW43KA] Travel Speed Sol Open Circuit 749
Failure code [DW43KB] Travel Speed Sol Short Circuit 751
Failure code [DW45KA] Swing Brake Sol Valve Open Circuit 753
Failure code [DW45KB] Swing Brake Sol Short Circuit 755
Failure code [DW91KA] Travel Neutral Sol Open Circuit 757
Failure code [DW91KB] Travel Neutral Sol Short Circuit 759
305 Troubleshooting by failure code, Part 5 762
Failure code [DWA2KA] Attachment Sol Open Circuit 763
Failure code [DWA2KB] Attachment Sol Short Circuit 765
Failure code [DWJ0KA] Merge-divider Sol Open Circuit 767
Failure code [DWJ0KB] Merge-divider Sol Short Circuit 769
Failure code [DWK0KA] 2-stage Relief Sol Open Circuit 771
Failure code [DWK0KB] 2-stage Relief Sol Short Circuit 773
Failure code [DWK2KA] Variable Back Press Sol Open Circuit 775
Failure code [DWK2KB] Variable Back Press Sol Short Circuit 777
Failure code [DXA8KA] PC-EPC Sol Open Circuit 779
Failure code [DXA8KB] PC-EPC Sol Short Circuit 781
Failure code [DXE0KA] LS-EPC Sol Open Circuit 783
Failure code [DXE0KB] LS-EPC Sol Short Circuit 785
Failure code [DXE4KA] Attachment Flow EPC Open Circuit 787
Failure code [DXE4KB] Attachment Flow EPC Short Circuit 789
Failure code [DY20KA] Wiper Working Abnormality 0
Failure code [DY20MA] Wiper Parking Abnormality 0
Failure code [DY2CKB] Washer Drive Short Circuit 0
Failure code [DY2DKB] Wiper Drive (Fwd) Short 0
Failure code [DY2EKB] Wiper Drive (Rev) Short 0
400 Troubleshooting of electrical system (E-mode) 792
Fuse locations 795
Information contained in troubleshooting table 797
E-1 Engine does not start (Engine does not crank) 799
E-2 Preheater does not operate 804
E-3 When starting switch is turned to ON position, machine monitor displays nothing 808
E-4 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up 811
E-5 Precaution monitor lights up while engine is running 812
E-6 Emergency stop monitor lights up while engine is running 814
E-7 Fuel level gauge does not indicate properly 815
E-8 Engine coolant temperature gauge does not indicate properly 817
E-9 Hydraulic oil temperature gauge does not indicate properly 818
E-10 Displays on machine monitor are different from those for actual machine 821
E-11 Some areas of machine monitor screen are not displayed 822
E-12 Function switch does not operate 822
E-13 Automatic warm-up system does not operate (in cold season) 823
E-14 Auto-decelerator does not operate properly 824
E-15 Working mode does not change 825
E-16 Travel speed does not change 826
E-17 Alarm buzzer cannot be canceled 827
E-18 When starting switch is turned OFF, service meter is not displayed 827
E-19 Service mode cannot be selected 827
E-20 Any of work equipment, swing and travel do not operate or cannot be locked 828
E-21 Swing holding brake does not operate properly 830
E-22 One-touch power maximizing function does not operate properly 833
E-23 Travel alarm does not sound or does not stop sounding 836
E-24 Horn does not sound or does not stop 837
E-25 Windshield wiper and window washer do not operate 839
E-26 Machine push-up function cannot be canceled 0
E-27 Machine push-up function does not operate 841
E-28 BOOM DOWN indicator is not displayed properly with monitoring function 842
E-29 ARM DUMP indicator is not displayed properly with monitoring function 842
E-30 ARM IN indicator is not displayed properly with monitoring function 842
E-31 BOOM RAISE indicator is not displayed properly with monitoring function 843
E-32 BUCKET CURL indicator is not displayed properly with monitoring function 843
E-33 BUCKET DUMP indicator is not displayed properly with monitoring function 843
E-34 SWING indicator is not displayed properly with monitoring function 844
E-35 TRAVEL indicator is not displayed properly with monitoring function 844
E-36 ATTACHMENT indicator is not displayed properly with monitoring function 845
E-37 Attachment hydraulic circuit cannot be changed 847
E-38 KOMTRAX system does not operate properly 848
500 Troubleshooting of hydraulic and mechanical system (H-mode) 850
System chart for hydraulic and mechanical system 853
Information contained in troubleshooting table 855
H-1 All work equipment lack power, or travel and swing speeds are slow 857
H-2 Engine speed sharply drops or engine stalls 859
H-3 No work equipment, swing or travel move 860
H-4 Abnormal noise is heard from around hydraulic pump 860
H-5 Auto-decelerator does not work 861
H-6 Fine control mode does not function or responds slow 861
H-7 Boom moves slowly or lacks power 862
H-8 Arm moves slowly or lacks power 863
H-9 Bucket moves slowly or lacks power 864
H-10 Work equipment does not move in its single operation 864
H-11 Work equipment has a bit too fast hydraulic drift 865
H-12 Work equipment has big time lag 867
H-13 Other work equipment moves when relieving single circuit 867
H-14 Power max switch does not operate 868
H-15 In compound operation, work equipment with larger load moves slowly 868
H-16 In swing + boom RAISE operation, boom moves slowly 869
H-17 In swing + travel operation, travel speed drops sharply 869
H-18 Machine swerves in travel 870
H-19 Machine travels slowly 871
H-20 Machine cannot be easily steered or lacks power 872
H-21 Travel speed does not shift, or it is too slow or fast 873
H-22 Track shoe does not turn (on one side only) 874
H-23 Machine does not swing 875
H-24 Swing acceleration is poor, or swing speed is slow 877
H-25 Excessive overrun when stopping swing 879
H-26 There is big shock when stopping swing 880
H-27 Large sound is made when upper structure stops swinging 880
H-28 Swing hydraulic drift is too big 881
600 Troubleshooting of engine (S-mode) 884
Method of using troubleshooting charts 886
S-1 Starting performance is poor 889
S-2 Engine does not start 890
S-3 Engine does not pick up smoothly 893
S-4 Engine stops during operations 894
S-5 Engine does not rotate smoothly 895
S-6 Engine lacks output (or lacks power) 896
S-7 Exhaust smoke is black (incomplete combustion) 897
S-8 Oil consumption is excessive (or exhaust smoke is blue) 898
S-9 Oil becomes contaminated quickly 899
S-10 Fuel consumption is excessive 900
S-11 Oil is in coolant (or coolant spurts back, or coolant level goes down) 901
S-12 Oil pressure drops 902
S-13 Oil level rises (water, fuel in oil) 903
S-14 Coolant temperature becomes too high (overheating) 904
S-15 Abnormal noise is made 905
S-16 Vibration is excessive 906
50 Disassembly and assembly 908
100 Related information on disassembly and assembly 908
How to read this manua 909
Coating materials list 911
Special tools list 915
Sketches of special tools 919
200 Engine and cooling system 924
Removal and installation of supply pump assembly 925
Removal and installation of engine front oil seal 929
Removal and installation of engine rear oil seal 932
Removal and installation of cylinder head assembly 937
Removal and installation of radiator assembly 951
Removal and installation of hydraulic oil cooler assembly 953
Removal and installation of aftercooler assembly 955
Removal and installation of engine and hydraulic pump assembly 957
300 Power train system 964
Removal and installation of travel motor and final drive assembly 965
Disassembly and assembly of final drive assembly 966
Removal and installation of swing motor and swing machinery assembly 976
Disassembly and assembly of swing motor and swing machinery assembly 977
Removal and installation of swing circle assembl 985
400 Undercarriage and frame 988
Disassembly and assembly of carrier roller assembly 989
Disassembly and assembly of track roller assembly 992
Removal and installation of idler and idler cushion assembly 994
Disassembly and assembly of idler assembly 995
Disassembly and assembly of recoil spring assembly 998
Removal and installation of sprocket 1000
Separation and connection of track assembly 1001
Removal and installation of revolving frame assembly 1005
Removal and installation of counterweight assembly 1007
500 Hydraulic system 1012
Removal and installation of center swivel joint assembly 1013
Disassembly and assembly of center swivel joint assembly 1015
Removal and installation of hydraulic tank assembly 1016
Removal and installation of control valve assembly 1018
Disassembly and assembly of control valve assembly 1021
Removal and installation of hydraulic pump assembly 1026
Removal and installation of hydraulic pump input shaft oil seal 1029
Disassembly and assembly of work equipment PPC valve assembly 1030
Disassembly and assembly of travel PPC valve assembly 1032
Disassembly and assembly of work equipment cylinder assembly 1034
600 Work equipment 1042
Removal and installation of work equipment assembly 1043
Removal and installation of anti-drop valve assembly for boom 1046
Removal and installation of anti-drop valve assembly for arm 0
Disassembly and assembly of anti-drop valve assembly 0
700 Cab and its attachments 1051
Removal and installation of operator’s cab assembly 1052
Removal and installation of operator’s cab glass (adhered window glass) 1055
Removal and installation of front window assembly 1064
Removal and installation of floor frame assembly 1070
800 Electrical system 1075
Removal and installation of air conditioner unit assembly 1076
Removal and installation of KOMTRAX terminal assembly 1081
Removal and installation of machine monitor assembly 1083
Removal and installation of pump controller assembly 1085
Removal and installation of engine controller assembly 1087
80 Appendix 1089
100 Air conditioner 1089
Precautions for refrigerant 1091
Air conditioner component 1092
Configuration and function of refrigeration cycle 1094
Outline of refrigeration cycle 1095
Air conditioner unit 1097
Air conditioner controller 1103
Compressor 1104
Condenser 1105
Receiver drier 1106
Sensor 1107
Procedure for testing and troubleshooting 1108
Circuit diagram and arrangement of connector pins 1110
System diagram 1112
Parts and connectors layout 1114
Testing air leakage (duct) 1117
Testing with self-diagnosis function 1119
Testing vent (mode) changeover 1121
Testing FRESH/RECIRC air changeover 1122
Testing sunlight sensor 1123
Testing (dual) pressure switch for refrigerant 1124
Testing relays 1125
Troubleshooting chart 1 1126
Troubleshooting chart 2 1128
Information in troubleshooting table 1130
Failure code list related to air conditioner 1131
Failure code [879AKA] A/C Inner sensor Open Circuit 1132
Failure code [879AKB] A/C Inner sensor Short Circuit 1133
Failure code [879BKA] A/C Outer sensor Open Circuit 1134
Failure code [879BKB] A/C Outer sensor Short Circuit 1136
Failure code [879CKA] Ventilating sensor Open Circuit 1138
Failure code [879CKB] Ventilating sensor Short Circuit 1139
Failure code [879DKZ] Sunlight sensor Open or Short Circuit 1140
Failure code [879EMC] Ventilating Damper Abnormality 1142
Failure code [879FMC] Air Mix Damper Abnormality 1143
Failure code [879GKX] Refrigerant Abnormality 1144
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate) 1146
Troubleshooting for compressor and refrigerant system (Air is not cooled) 1148
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 1151
Troubleshooting for FRESH/RECIRC air changeover 1153
Troubleshooting with gauge pressure 1155
Connection of service tool 1157
Precautions for disconnecting and connecting air conditioner piping 1159
Handling of compressor oil 1161
90 Diagrams and drawings 1165
100 Hydraulic diagrams and drawings 1165
Symbols in hydraulic circuit diagram 1166
Hydraulic circuit diagram 0
200 Electrical diagrams and drawings 1171
Symbols in electric circuit diagram 1172
Electrical circuit diagram 0
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IMAGES PREVIEW OF THE MANUAL:
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