Komatsu PC228US-8 PC228USLC-8 Hydraulic Excavator Shop Manual SEN05331-10 PDF

Description

Komatsu PC228US-8 PC228USLC-8 Hydraulic Excavator Shop Manual SEN05331-10 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC228US-8 PC228USLC-8 Hydraulic Excavator Shop Manual SEN05331-10 – PDF DOWNLOAD 

Language : English
Pages : 1350
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu PC228US-8 PC228USLC-8 Hydraulic Excavator Shop Manual SEN05331-10 – PDF DOWNLOAD 

SERIAL NUMBERS

PC228US- 50001 and up
PC228USLC- 50001 and up

How to read the shop manual 
1. Composition of shop manual
This shop manual contains the necessary technical information for services performed in a workshop. For
ease of understanding, the manual is divided into the following sections.
00. Index and foreword
This section contains the index, foreword, safety and basic information. If any revision is made, the LIST
OF REVISED PAGES will be added.
01. Specification
This section explains the specifications of the machine.
10. Structure and function
This section explains the structure and function of each component. It serves not only to give an understanding
for the structure of each component, but also serves as reference material for troubleshooting.
20. Standard value table
This section explains the standard values for new machine and judgement criteria for testing, adjusting,
and troubleshooting. This standard value table is used to check the standard values in testing and adjusting
and to judge parts in troubleshooting.
30. Testing and adjusting
This section explains measuring tools and measuring methods for testing and adjusting, as well as the
adjusting method of each part. The standard values and judgment criteria for “Testing and adjusting” are
explained in “Standard value table”.
40. Troubleshooting
This section explains how to find out failed parts and how to repair them. The troubleshooting is divided
by failure modes. The “S mode” of the troubleshooting related to the engine may be also explained in the
Chassis volume and Engine volume. In this case, see the Chassis volume.
50. Disassembly and assembly
This section explains the special tools and procedures for removing, installing, disassembling, and assembling
each component, as well as precautions for them. In addition, tightening torque, and quantity and
weight of coating material, oil, grease, and coolant necessary for the work are also explained.
60. Maintenance standard
This section gives maintenance standard values of each component. The maintenance standard sub-section
explains the criteria and remedies for disassembly and service.
80. Appendix
This section explains the structure, function, testing, adjusting, and troubleshooting for the equipment not
classifiable in other sections.
90. Diagrams and drawings (chassis volume) /Repair and replacement of parts (engine volume)
q Chassis volume
This section gives hydraulic circuit diagrams and electrical circuit diagrams.
q Engine volume
This section explains the method of remanufacturing and repairing engine and replacing parts.

TABLE OF CONTENTS:

Komatsu PC228US-8 PC228USLC-8 Hydraulic Excavator Shop Manual SEN05331-10 – PDF DOWNLOAD

SERIAL NUMBERS

PC228US- 50001 and up
PC228USLC- 50001 and up

Cover 1
00 Index and foreword 3
Table of Contents 4
Table of Contents 4
Forword and general information 14
Safety notice 14
How to read the shop manual 19
Explanation of terms for maintenance standard 21
Handling of hydraulic components 23
Method of disconnecting and connecting push-pull type coupler 25
Handling of electric equipment 28
How to read electric wire code 38
Precautions when performing work 41
Standard tightening torque table 44
List of abbreviation 48
Conversion table 52
01 Specifications 57
Specifications 60
Specifications drawing 60
Working range diagram 61
Specifications 62
Table of weight 72
Table of fuel, coolant and lubricants 76
10 Structure and function 79
Engine and cooling system 81
Engine related parts 81
Cooling system 82
Power train system 85
Power train 85
Swing circle 86
Swing machinery 88
Final drive 90
Undercarriage and frame 92
Track frame and idler cushion 92
Hydraulic system 94
Hydraulic equipment layout drawing 94
Valve control 96
Hydraulic tank 97
CLSS 99
Main pump 104
Control valve 126
Function and operation by valve 138
Swing motor 175
Travel motor 183
PPC valve 193
Solenoid valve 210
Attachment circuit selector valve 216
Anti-drop valve 220
Multi-control valve 225
Center swivel joint 226
Accumulator 227
Work equipment 230
Work equipment 230
Electrical system 232
Electronic control system 232
Machine monitor system 270
KOMTRAX system 286
Sensors 288
20 Standard value table 299
Standard value table 301
Standard value table for engine 301
Standard value table for machine 302
30 Testing and adjusting 313
Tool for testing, adjusting and troubleshooting 317
Tools for testing, adjusting, and troubleshooting 317
Engine and cooling system 323
Testing engine speed 323
Testing intake air pressure (boost pressure) 324
Testing exhaust gas color 325
Testing and adjusting valve clearance 326
Testing compression pressure 328
Testing blowby pressure 331
Testing engine oil pressure 332
Handling fuel system parts 333
Releasing remaining pressure from fuel system 334
Testing fuel pressure 335
Cylinder cut-out test mode 338
No-injection cranking 339
Checking fuel delivery, return rate and leakage 340
Bleeding air from fuel circuit 343
Testing fuel circuit for leakage 344
Testing and adjusting air conditioner compressor belt tension 345
Replacing fan belt 346
Undercarriage and frame 347
Testing swing circle bearing clearance 347
Checking and adjusting track tension 348
Hydraulic system 349
Testing and adjusting oil pressure in work equipment, swing and travel circuits 349
Testing control circuit source pressure 353
Testing and adjusting oil pressure in pump PC control circuit 354
Testing and adjusting oil pressure in pump LS control circuit 358
Testing solenoid valve output pressure 363
Testing PPC valve output pressure 366
Adjusting play of work equipment and swing PPC vavles 368
Testing pump swash plate sensor 369
Isolating the parts causing hydraulic drift of work equipment 370
Releasing remaining pressure from hydraulic circuit 372
Testing oil leakage amount 373
Bleeding air from each part 375
Testing and charging accumulator(manufactured by NOK) nitrogengas pressure for attachment (lowpressure side) 377
Testing and charging accumulatornitrogen gas pressure for attachment(high pressure side) 379
Replacing accumulator bladder onhigh pressure side for accumulatorpiping 381
Work equipment 387
Replacement procedure of boom angle potentiometer 387
Cab and its attachments 388
Checking cab tipping stopper 388
How to Examine and Adjust Slide Door 389
Adjusting mirrors 415
Angle adjustment of rear view camera 417
Electrical system 419
Speial function of machine monitor (EMMS) 419
Handling voltage circuit of engine controller 475
Preparatory work for troubleshooting of electrical system 476
Procedure for testing diodes 481
Pm clinic 483
Pm clinic service 483
40 Troubleshooting 489
General information on troubleshooting 496
Points to remember when troubleshooting 496
Sequence of events in troubleshooting 497
Checks before troubleshooting 498
Classification and procedures for troubleshooting 522
Failure codes table 525
Symptom and troubleshooting numbers 530
Information in troubleshooting table 532
Troubleshooting method for open circuit in wiring harness of pressure sensor system 534
Connector list and layout 536
Connection table for connector pin numbers 548
T- branch box and T- branch adapter table 584
Fuse location table 588
Troubleshooting by failurecode 590
Failure code [989L00] Engine Controller Lock Caution 1 590
Failure code [989M00] Engine Controller Lock Caution 2 590
Failure code [989N00] Engine Controller Lock Caution 3 591
Failure code [AA10NX] Air Cleaner Clogging 592
Failure code [AB00KE] Charge Voltage Low 594
Failure code [B@BAZG] Eng Oil Press Low 596
Failure code [B@BAZK] Eng Oil Level Low 597
Failure code [B@BCNS] Eng Water Overheat 598
Failure code [B@BCZK] Eng Water Level Low 600
Failure code [B@HANS] Hyd Oil Overheat 602
Failure code [CA111] ECM Critical Internal Failure 603
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 603
Failure code [CA122] Chg Air Press Sensor High Error 604
Failure code [CA123] Chg Air Press Sensor Low Error 606
Failure code [CA131] Throttle Sensor High Error 608
Failure code [CA132] Throttle Sensor Low Error 610
Failure code [CA144] Coolant Temp Sens High Error 612
Failure code [CA145] Coolant Temp Sens Low Error 614
Failure code [CA153] Chg Air Temp Sensor High Error 616
Failure code [CA154] Chg Air Temp Sensor Low Error 618
Failure code [CA155] Chg Air Temp High Speed Derate 620
Failure code [CA187] Sens Supply 2 Volt Low Error 622
Failure code [CA221] Ambient Press Sens High Error 624
Failure code [CA222] Ambient Press Sens Low Error 626
Failure code [CA227] Sens Supply 2 Volt High Error 628
Failure code [CA234] Eng Overspeed 629
Failure code [CA238] Ne Speed Sens Supply Volt Error 630
Failure code [CA271] IMV/PCV1 Short Error 632
Failure code [CA272] IMV/PCV1 Open Error 634
Failure code [CA322] Inj #1(L#1) Open/Short Error 636
Failure code [CA323] Inj #5 (L#5) Open/Short Error 638
Failure code [CA324] Inj #3(L#3) Open/Short Error 640
Failure code [CA325] Inj #6 (L#6) Open/Short Error 642
Failure code [CA331] Inj #2(L#2) Open/Short Error 644
Failure code [CA332] Inj #4(L#4) Open/Short Error 646
Failure code [CA342] Calibration Code Incompatibility 648
Failure code [CA351] Injectors Drive Circuit Error 649
Failure code [CA352] Sens Supply 1 Volt Low Error 650
Failure code [CA386] Sens Supply 1 Volt High Error 652
Failure code [CA428] Water in Fuel Sensor High Error 654
Failure code [CA429] Water in Fuel Sensor Low Error 656
Failure code [CA435] Eng Oil Press Sw Error 658
Failure code [CA441] Battery Voltage Low Error 660
Failure code [CA442] Battery Voltage High Error 662
Failure code [CA449] Rail Press Very High Error 663
Failure code [CA451] Rail Press Sensor High Error 664
Failure code [CA452] Rail Press Sensor Low Error 666
Failure code [CA488] Chg Air Temp High Torque Derate 668
Failure code [CA553] Rail Press High Error 669
Failure code [CA559] Rail Press Low Error 670
Failure code [CA689] Eng Ne Speed Sensor Error 672
Failure code [CA731] Eng Bkup Speed Sens Phase Error 674
Failure code [CA757] All Continuous Data Lost Error 675
Failure code [CA778] Eng Bkup Speed Sensor Error 676
Failure code [CA1633] KOMNET Datalink Timeout Error 679
Failure code [CA2185] Throt Sens Sup Volt High Error 680
Failure code [CA2186] Throt Sens Sup Volt Low Error 681
Failure code [CA2249] Rail Press Very Low Error 682
Failure code [CA2311] IMV Solenoid Error 683
Failure code [CA2555] Grid Htr Relay Open Circuit Error 684
Failure code [CA2556] Grid Htr Relay Short Circuit Error 686
Failure code [D110KB] Battery Relay Drive Short Circuit 688
Failure code [D19JKZ] Personal Code Relay Abnormality 690
Failure code [D862KA] GPS Antenna Open Circuit 692
Failure code [DA22KK] Pump Solenoid Power Low Error 694
Failure code [DA25KP] 5V Sensor1 Power Abnormality 696
Failure code [DA26KP] 5V Sensor2 Power Abnormality 698
Failure code [DA29KQ] Model Selection Abnormality 702
Failure code [DA2RMC] CAN Discon (Pump Con Detected) 705
Failure code [DAF8KB] Camera Power Supply Short Circuit 710
Failure code [DAFGMC] GPS Module Error 712
Failure code [DAFRMC] CAN Discon (Monitor Detected) 714
Failure code [DGH2KB] Hyd Oil Sensor Short 718
Failure code [DHPAMA] Pump Press Sensor Abnormality 720
Failure code [DHPBMA] R Pump Press Sensor Abnormality 722
Failure code [DHS3MA] Arm IN PPC Sen Abnormality 724
Failure code [DHS4MA] Bucket CURL PPC Press Sensor Abnormality 726
Failure code [DHS8MA] Boom RAISE PPC Press Sensor Abnormality 728
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnomality 730
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnomality 732
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 734
Failure code [DHSFMA] Travel FW L PPC Press Sensor Abnormality 736
Failure code [DHSGMA] Travel FW R PPC Press Sensor Abnormality 738
Failure code [DHSHMA] Travel BW L PPC Press Sensor Abnormality 740
Failure code [DHSJMA] Travel BW R PPC Press Sensor Abnormality 742
Failure code [DHX1MA] Overload Sensor Abnormality 745
Failure code [DKA0KA] Boom Angle Sensor Open Circuit 748
Failure code [DKA0KB] Boom Angle Sensor Power Short Circuit 750
Failure code [DKA0PH] Boom Angle Sensor Install Abnormality 752
Failure code [DKR0MA] F pump S/P sensor Abnormality 754
Failure code [DKR1MA] R pump S/P sensor Abnormality 756
Failure code [DV20KB] Travel Alarm Short Circuit 758
Failure code [DW43KA] Travel Speed Sol Open Circuit 760
Failure code [DW43KB] Travel Speed Sol Short Circuit 762
Failure code [DW45KA] Swing Brake Sol Open Circuit 764
Failure code [DW45KB] Swing Brake Sol Short Circuit 766
Failure code [DW4GKA] Boom Slow Down Sol Disc 768
Failure code [DW4GKB] Boom Slow Down Sol Short Circuit 770
Failure code [DW4WKA] Cancel Bucket Dump Open Circuit 772
Failure code [DW4WKB] Cancel Bucket Dump Short Circuit 774
Failure code [DW91KA] Travel Junction Sol Disc 776
Failure code [DW91KB] Travel Junction Sol S/C 778
Failure code [DWA2KA] Attachment Sol Open Circuit 780
Failure code [DWA2KB] Attachment Sol Short Circuit 782
Failure code [DWK0KA] 2-stage Relief Sol Open Circuit 784
Failure code [DWK0KB] 2-stage Relief Sol Short Circuit 786
Failure code [DXA8KA] PC-EPC (F) Sol Open Circuit 788
Failure code [DXA8KB] PC-EPC (F) Sol Short Circuit 790
Failure code [DXA9KA] PC-EPC (R) Sol Open Circuit 792
Failure code [DXA9KB] PC-EPC (R) Sol Short Circuit 794
Failure code [DXE0KA] LS-EPC Sol Open Circuit 796
Failure code [DXE0KB] LS-EPC Sol Short Circuit 798
Failure code [DXE4KA] Service Current EPC Disc 800
Failure code [DXE4KB] Service Current EPC S/C 802
Failure code [DXE5KA] Merge-divider Main Sol Open Circuit 804
Failure code [DXE5KB] Merge-divider Main Sol Short Circuit 806
Failure code [DXE6KA] Merge-divider LS Sol Open Circuit 808
Failure code [DXE6KB] Merge-divider LS Sol Short Circuit 810
Failure code [DY20KA] Wiper Working Abnormality 812
Failure code [DY20MA] Wiper Parking Abnormality 814
Failure code [DY2CKA] Washer drive discon 816
Failure code [DY2CKB] Washer drive short 818
Failure code [DY2DKB] Wiper Drive (Fwd) Short Circuit 820
Failure code [DY2EKB] Wiper Drive (Rev) Short Circuit 822
Troubleshooting of electrical system (E-mode) 825
E-1 Engine does not start (Engine does not crank) 825
E-2 Preheater does not operate 830
E-3 When starting switch is turned to ON position, machine monitor displays nothing 835
E-4 When starting switch is turned to ON position (before starting engine), basic check monitor lights up 838
E-5 Precaution monitor lights up while engine is running 839
E-6 Emergency stop monitor lights up while engine is running 841
E-7 Fuel level gauge does not indicate correctly 842
E-8 Engine coolant temperature gauge does not indicate correctly 844
E-9 Hydraulic oil temperature gauge does not indicate correctly 846
E-10 Displays on machine monitor are different from those for actual machine 849
E-11 Some areas of machine monitor screen are not displayed 849
E-12 Function switch does not operate 849
E-13 Automatic warm-up system does not operate (in cold season) 850
E-14 Auto-decelerator does not operate properly 851
E-15 Working mode does not change 852
E-16 Travel speed does not change 853
E-17 Alarm buzzer cannot be canceled 854
E-18 When starting switch is turned OFF, service meter is not displayed40 854
E-19 Service mode cannot be selected 855
E-20 Any of work equipment, swing and travel do not operate or cannot be locked 856
E-21 Swing brake does not operate properly 859
E-22 One-touch power maximizing function does not operate properly 862
E-23 Travel alarm does not sound or does not stop sounding 865
E-24 Horn does not sound or does not stop 866
E-25 Windshield wiper and window washer do not operate 868
E-26 BOOM LOWER indicator is not displayed properly with monitoring function 870
E-27 ARM OUT indicator is not displayed properly with monitoring function 872
E-28 ARM IN indicator is not displayed properly with monitoring function 874
E-29 BOOM RAISE indicator is not displayed properly with monitoring function 874
E-30 BUCKET CURL indicator is not displayed properly with monitoring function 874
E-31 BUCKET DUMP indicator is not displayed properly with monitoring function 875
E-32 SWING indicator is not displayed properly with monitoring function 875
E-33 TRAVEL indicator is not displayed properly with monitoring function 875
E-34 ATTACHMENT indicator is not displayed properly with monitoring function 876
E-35 Attachment hydraulic circuit cannot be changed 878
E-36 KOMTRAX system does not operate properly 879
Troubleshooting of hydraulic and mechanical system (H-mode) 881
Information in troubleshooting table 881
System chart for hydraulic and mechanical systems 882
Failure mode and cause table 884
H- 1 All of work equipment, swing and travel work slow or lack power 886
H- 2 Engine speed lowers significantly or engine stalls 888
H- 3 Any of work equipment,swing and travel does not work 889
H- 4 Unusual sound is heard from around hydraulic pump 889
H- 5 Fine control performance or response is poor 890
H- 6 Boom operation lacks speed or power 891
H- 7 Arm operation lacks speed or power 892
H- 8 Bucket operation lacks speed or power 893
H- 9 Work equipment does not move in single operation 893
H-10 Hydraulic drift of work equipment is large 894
H-11 Time lag of work equipment is large 896
H-12 Other work equipment moves when one of work equipment is relieved 896
H-13 One-touch power maximizing function does not work 897
H-14 In combined operation of work equipment , equipment having heavier load moves slower 897
H-15 In combined operation of swing and boom RAISE, boom rising speed is low 898
H-16 Travel speed drops largely in combined operation of swing and travel 898
H-17 Machine does not travel straight 899
H-18 Travel speed is low 900
H-19 Machine is hard to steer or travel power is low 901
H-20 Travel speed does not change, or travel speed is too low or high 902
H-21 One of tracks does not run 903
H-22 Upper structure does not swing 904
H-23 Swing acceleration is poor or swing speed is low 906
H-24 Upper structure overruns excessively when it stops swinging 908
H-25 Shock is large when upper structure stops swinging 909
H-26 Large unusual noise is heard when upper structure stops swinging40 909
H-27 Swing drift on a slope is large 910
H-28 Attachment circuit cannot be changed 911
H-29 Oil flow in attachment circuit cannot be controlled 911
Troubleshooting of engine (S-mode) 912
Method of using troubleshooting chart 912
S-1 Startability is poor 916
S-2 Engine does not start 917
S-3 Engine does not pick up smoothly 920
S-4 Engine stops during operation 921
S-5 Engine runs rough or is unstable 922
S-6 Engine lacks power 923
S-7 Exhaust smoke is black (incomplete combustion) 924
S-8 Oil consumption is excessive (or exhaust smoke is blue) 925
S-9 Oil becomes contaminated early 926
S-10 Fuel consumption is excessive 927
S-11 Oil is in coolant (or coolant spurts or coolant level goes down) 928
S-12 Oil pressure drops 929
S-13 Oil level rises (coolant or fuel in oil) 930
S-14 Coolant temperature rises too high (overheating) 931
S-15 Unusual noise is made 932
S-16 Vibration is excessive 933
50 Disassembly and assembly 935
General information on disassembly and assembly 938
How to read Disassembly and Assembly 938
Coating materials list 940
Special tools list 943
Sketches of special tools 947
Engine and cooling system 952
Removal and installation of fuel supply pump assembly 952
Removal and installation of fuel injector assembly 956
Removal and installation of cylinder head assembly 963
Removal and installation of radiator assembly 978
Removal and installation of hydraulic oil cooler assembly 981
Removal and installation of aftercooler assembly 983
Removal and installation of engine assembly 986
Removal and installation of engine front seal 990
Removal and installation of engine rear seal 992
Removal and installation of fuel cooler assembly 995
Removal and installation of fuel tank assembly 997
Power train 1000
Removal and installation of travel motor and final drive assembly 1000
Disassembly and assembly of final drive assembly 1001
Removal and installation of swing motor and swing machinery assembly 1009
Disassembly and assembly of swing machinery assembly 1011
Removal and installation of swing circle assembly 1019
Undercarriage and frame 1020
Separation and connection of track shoe assembly 1020
Removal and installation of idler and idler cushion assembly 1022
Disassembly and assembly of idler assembly 1023
Disassembly and assembly of idler cushion assembly 1026
Disassembly and assembly of track roller assembly 1028
Disassembly and assembly of carrier roller assembly 1030
Removal and installation of revolving frame assembly 1033
Removal and installation of counterweight assembly 1035
Removal and installation of maintenance counterweight assembly 1037
Hydraulic system 1040
Removal and installation of center swivel joint assembly 1040
Disassembly and assembly of center swivel joint assembly 1043
Removal and installation of hydraulic tank assembly 1045
Removal and installation of main pump assembly 1047
Removal and installation of main pump input shaft oil seal 1051
Removal and installation of control valve assembly 1052
Disassembly and assembly of control valve assembly 1057
Disassembly and assembly of work equipment PPC valve assembly 1061
Disassembly and assembly of travel PPC valve assembly 1063
Work equipment 1066
Removal and installation of work equipment assembly 1066
Removal and installation of antidropvalve assembly for boom 1069
Removal and installation of antidropvalve assembly for arm 1072
Disassembly and assembly ofanti-drop valve assembly 1074
Disassembly and assembly of work equipment cylinder assembly 1075
Cab and its attachments 1082
Removal and installation of operator’s cab assembly 1082
Remove and Install Slide Door 1086
Removal and installation of operator’s cab glass (adhered window glass) 1090
Removal and installation of front window assembly 1100
Removal and installation of floor frame assembly 1101
Removal and installation of air conditioner unit assembly 1108
REMOVE AND INSTALL WORK EQUIPMENT CONTROL LEVER ASSEMBLY 1113
Electrical system 1128
Removal and installation of air conditioner compressor assembly 1128
Removal and installation of air conditioner condenser assembly 1130
Removal and installation of engine controller assembly 1131
Removal and installation of pump controller assembly 1133
Removal and installation of machine monitor assembly 1136
Removal and installation of pump swash plate sensor 1138
Removal and installation of KOMTRAX terminal assembly 1139
60 Maintenance standard 1141
Engine and cooling system 1144
Engine mount 1144
Cooling system 1145
Power train 1146
Swing circle 1146
Swing machinery 1148
Final drive 1150
Sprocket 1152
Undercarriage and frame 1154
Track frame and idler cushion 1154
Idler 1156
Track roller 1158
Carrier roller 1159
Track shoe 1160
Hydraulic system 1165
Hydraulic tank 1165
Main pump 1166
Control valve 1169
Swing motor 1179
Travel motor 1181
PPC valve 1185
Solenoid valve 1193
Attachment circuit selector valve 1195
Anti-drop valve 1198
Center swivel joint 1200
Work equipment 1202
Work equipment 1202
Dimensions of components 1204
Work equipment cylinder 1208
80 Appendix 1211
Air conditioner 1213
Precautions for refrigerant 1213
Air conditioner component 1214
Configuration and function of refrigeration cycle 1216
Outline of refrigeration cycle 1218
Air conditioner unit 1220
Air conditioner controller 1225
Compressor 1226
Condenser and Modulator 1227
Sensor 1228
Procedure for testing and troubleshooting 1230
Circuit diagram and arrangement of connector pins 1232
System diagram 1234
Detail of air conditioner unit 1236
Parts and connectors layout 1238
Testing air leakage (duct) 1242
Testing with self-diagnosis function 1243
Testing vent (mode) changeover 1246
Testing FRESH/RECIRC air changeover 1247
Testing inner sensor 1248
Testing outer sensor 1249
Testing sunlight sensor 1250
Testing (dual) pressure switch for refrigerant 1251
Testing relays 1252
Troubleshooting chart 1 1254
Troubleshooting chart 2 1256
Information in troubleshooting table 1258
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate) 1260
Troubleshooting for compressor and refrigerant system (Air is not cooled) 1264
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 1267
Troubleshooting for temperature control 1270
Troubleshooting for vent (mode) changeover 1272
Troubleshooting for FRESH/RECIRC air changeover 1274
Troubleshooting for temperature sensor system 1276
Troubleshooting with gauge pressure 1278
Connection of service tool 1280
Precautions for disconnecting and connecting air conditioner piping 1282
Handling of compressor oil 1284
Desiccant replacement procedure 1286
90 Diagrams and drawings 1289
Hydraulic circuit diagram 1291
Symbols used in hydraulic circuit diagrams 1291
Hydraulic circuit diagram (1/4) 1295
Hydraulic circuit diagram (2/4) 1297
Hydraulic circuit diagram (3/4) 1299
Hydraulic circuit diagram (4/4) 1301
Electrical circuit diagram 1303
Symbols used in electric circuit diagrams 1303
Electrical circuit diagram 1307
Air conditioner electrical circuit diagram 1341

IMAGES PREVIEW OF THE MANUAL:

S.V 27/12/24