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INVENTOR U6MRS32-18 Service Manual Download Page 261

Outdoor Unit Disassembly 29 

8. PCB board 8

Procedure

Illustration

1) Unfix the hooks and then open the

electronic control box cover (4 hooks)
(see 

CJ_ODU_PCB_008-1).

2) Disconnect the connector for

outdoor DC fan from the electronic
control board (see 

CJ_ODU_

PCB_008-2).

3) Remove the connector for the

compressor (see 

CJ_ODU_PCB_008-

2).

4) Pull out the two blue wires

connected with the four way valve
(see 

CJ_ODU_PCB_008-2).

5) Pull out connectors of the condenser

coil temp. sensor(T3),outdoor
ambient temp. sensor(T4) and
discharge temp. sensor(TP) (see 

CJ_

ODU_PCB_008-2).

6) Disconnect the electronic expansion

valve wire (see Fig 

CJ_ODU_

PCB_008-2).

7) Disconnect the communication

wire indoor PCB (see Fig 

CJ_ODU_

PCB_008-2).

8) Disconnect the PFC inductor (see Fig

CJ_ODU_PCB_008-2).

9) Then remove the electronic control

box (see 

CJ_ODU_PCB_008-2).

CJ_ODU_PCB_008-1

CJ_ODU_PCB_008-2

Note: This section is for reference only. Actual unit appearance may vary.

Summary of Contents for U6MRS32-18

Page 1: ...SERVICE MANUAL ENGLISH AIR CONDITIONING SYSTEMS LCAC...

Page 2: ...Unit 1 Indoor Unit Compact Four way Cassette Type 2 Indoor Unit A6 Duct Type 3 Indoor Unit Floor Ceiling Type Outdoor Unit 1 Dimensional Drawings 2 Centre of Gravity 3 Service Space 4 Capacity Correct...

Page 3: ...e by Error Code 7 Troubleshooting by Error Code 8 Check Procedures Indoor Unit Disassembly 1 Indoor Unit Compact Four way Cassette Type 2 Indoor Unit A6 Duct Type 3 Indoor Unit Floor Ceiling Type Outd...

Page 4: ......

Page 5: ...Contents 1 Precautions 2 2 Information servicing For flammable materials 3 Safety Precautions...

Page 6: ...d perform electri cal work For more information contact your dealer seller or an authorized service center CAUTION While unpacking be careful of sharp edges around the unit as well as the edges of the...

Page 7: ...work taking place the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks NO SMOKING signs shall be displayed 2 7 Ventilated area Ensure tha...

Page 8: ...on of refrigerant in the atmosphere from a leak 2 12 Cabling Check that cabling will not be subject to wear corrosion excessive pressure vibration sharp edges or any other adverse environmental effect...

Page 9: ...use of reclaimed refrigerant It is essential that electrical power is available before the task is commenced Become familiar with the equipment and its operation Isolate system electrically Before at...

Page 10: ...iated electrical components are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt The recovered refrigerant shall be returned to the refrigerant supplie...

Page 11: ...Contents 1 Model Reference 2 2 External Appearance 3 Model Reference...

Page 12: ...termine the specific indoor and outdoor unit model number of your purchased equipment Indoor Unit Model Universal Outdoor Unit Model Capacity Btu h Power Supply 1 220 240V 50Hz Cassette V6MCRI32 18WiF...

Page 13: ...Model Reference 3 2 External Appearance 2 1 Indoor Unit Compact Four way Cassette A6 Duct Floor Ceiling...

Page 14: ...Model Reference 4 2 2 Outdoor Unit Outdoor Unit...

Page 15: ...s 4 3 Part names 5 4 Service Place 6 5 Accessories 7 6 Air Velocity and Temperature Distributions 8 7 Capacity Tables 12 8 Noise Criterion Curves 18 9 Electrical Characteristics 20 10 Electrical Wirin...

Page 16: ...l box adopts new design which can meet higher fire safety requirements 1 3 Reserved remote on off and alarm ports Optional for fixed speed units standard for inverter units Remote on off With the rese...

Page 17: ...frared remote controller wired controller can be fixed on the wall and avoid mislaying It s mainly used for commercial zone and makes air conditioner control more convenient 1 7 Louver Position Memory...

Page 18: ...IDU Compact Cassette 4 2 Dimensional Drawings...

Page 19: ...IDU Compact Cassette 5 3 Part names Drain pump within indoor unit Drain pipe Air outlet Air inlet Display panel Front grille Louver Refrigerant pipe...

Page 20: ...IDU Compact Cassette 6 4 Service Place...

Page 21: ...Outlet pipe clasp some models 1 Drain joint some models 1 Seal ring some models 1 EMC Magnetic Ring some models Magnetic ring wrap the electric wires S1 S2 P Q E around the magnetic ring twice 1 Magn...

Page 22: ...IDU Compact Cassette 8 6 Air Velocity and Temperature Distributions 18K Discharge Angle 30 Cooling airflow velocity distributions Cooling temperature distributions...

Page 23: ...IDU Compact Cassette 9 Heating airflow velocity distributions Heating temperature distributions...

Page 24: ...IDU Compact Cassette 10 Discharge Angle 60 Cooling airflow velocity distributions Cooling temperature distributions...

Page 25: ...IDU Compact Cassette 11 Heating airflow velocity distributions Heating temperature distributions...

Page 26: ...5 74 5 79 5 79 5 79 5 79 6 19 6 19 6 19 6 19 S T 0 69 0 76 0 83 0 89 0 57 0 63 0 70 0 76 0 51 0 58 0 64 0 70 0 38 0 44 0 50 0 56 PI 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 13 1...

Page 27: ...12 2 12 2 14 2 14 2 14 2 14 720 15 TC 5 74 5 74 5 80 5 86 6 05 6 05 6 05 6 05 6 20 6 20 6 20 6 20 6 57 6 57 6 57 6 57 S T 0 70 0 78 1 00 1 00 0 56 0 64 0 72 0 98 0 49 0 57 0 66 0 73 0 35 0 42 0 49 0...

Page 28: ...4 11 4 11 4 45 4 45 4 45 4 45 S T 0 74 0 84 0 94 1 00 0 59 0 68 0 77 0 86 0 52 0 61 0 69 0 78 0 36 0 44 0 52 0 60 PI 2 30 2 30 2 30 2 30 2 31 2 31 2 31 2 31 2 32 2 32 2 32 2 32 2 33 2 33 2 33 2 33 62...

Page 29: ...32 1 32 1 32 1 32 1 32 1 32 20 TC 5 48 5 48 5 53 5 59 5 82 5 82 5 82 5 82 5 99 5 99 5 99 5 99 6 42 6 42 6 42 6 42 S T 0 72 0 81 0 90 0 98 0 58 0 66 0 75 0 83 0 51 0 59 0 68 0 76 0 36 0 44 0 51 0 59 P...

Page 30: ...4 7 4 7 1 86 1 93 1 89 1 91 5 6 4 7 4 7 4 7 4 6 1 82 1 84 1 85 1 86 2 8 4 7 4 7 4 7 4 7 1 74 1 75 1 76 1 77 0 0 4 7 4 7 4 6 4 6 1 66 1 67 1 67 1 68 2 8 4 9 4 8 4 8 4 7 1 59 1 60 1 60 1 61 5 6 5 2 5 1...

Page 31: ...5 7 0 88 0 90 0 95 0 97 5 6 5 7 5 6 5 6 5 5 0 91 0 96 0 99 1 01 2 8 5 5 5 4 5 4 5 4 0 99 1 04 1 07 1 10 0 0 5 2 5 2 5 1 5 1 1 06 1 12 1 15 1 18 2 8 5 2 5 1 5 1 5 0 1 15 1 22 1 25 1 28 5 6 5 2 5 2 5 1...

Page 32: ...nominal operation condition Reference acoustic pressure OdB 20 Pa Sound level will vary depending on a range of factors such as theconstruction acousticabsorptioncoefficient ofparticular room in whic...

Page 33: ...mpact Cassette 19 V6MCRI32 18WiFiR 0 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Sound Pressure Level dB 0dB 0 0002 bar Band Center Frequency Hz H M L NC 70 NC 60 NC 50 NC 4...

Page 34: ...2 5 Strong Electric Signal 4 1 0 4 2 5 with auxiliary electric heater Weak Electric Signal 10 Electrical Wiring Diagrams IDU Model IDU Wiring Diagram Field Wiring Diagram V6MCRI32 18WiFiR 16022500004...

Page 35: ...To CCM Comm Bus CN7 T2B OUTER PIPE TEMP POWER P1 CN3 JR6 JR6 FAN1 CAP1 Y G P3 P2 6 CN4 2 H CH P4 Y G 4 BROWN BLACK CN110 YELLOW Y G TO OUTDOOR UNIT P5 MAGNETIC RING MAGNETIC RING NOTE The wiring diag...

Page 36: ...on 4 When close open the remote switch the unit would be responded the demand within 2 seconds 5 When the remote switch on you can use remote controller wire controller to select the mode what you wan...

Page 37: ...ut no voltage of the terminal port the power from the ALARM system not from the unit 2 Although design voltage can support higher voltage but we strongly ask you connect the power less than 24V curren...

Page 38: ...tput voltage is the power supply 3 The fresh motor can not excess 200W or 1A follow the smaller one 4 The new fresh motor will be worked when the indoor fan motor work when the indoor fan mo tor stops...

Page 39: ...i cold wind action in heating mode Range 24o C 15o C 8o C According to EEROM setting reserved for special customizing B Micro switch SW2 is for selection of indoor FAN ACTION if room temperature reach...

Page 40: ...r selection of temperature compensation in heating mode This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly If the height of installation...

Page 41: ...E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 20 26 36 53 32 35 54 71 72 90 91 105 141 160 H Dial switch ENC1 The indoor PCB is universal designed...

Page 42: ...imensional Drawings 5 3 Part names 6 4 Service Place 6 5 Accessories 7 6 Fan Performance 8 7 Capacity Tables 10 8 Noise Criterion Curves 16 9 Electrical Characteristics 18 10 Electrical Wiring Diagram...

Page 43: ...ely with both short pipes and long pipes 1 2 High Static Pressure Capable to be installed in various applications that requires static pressure of 160Pa 12K 18K 24K 36K 48K 40Pa 70Pa 70Pa 100Pa 100Pa...

Page 44: ...into tight roof space 1 5 2 Types Installation Two types of installation methods can be selected ceiling concealed and floor concealed optional 1 6 Flexible Air Intake The frame size of air inlet in r...

Page 45: ...ection For ordinary duct 3 wires must correspond to P Q and E terminal one by one You may be confused when wires are too long A6 duct uses two wires without polarity connection way which almost has no...

Page 46: ...Drawings Model unit A B C D E F G H I J K L M H1 H2 W1 W2 KBtu h 18 mm 880 210 674 600 140 706 50 136 782 190 40 920 508 78 148 88 112 inch 34 65 8 27 26 54 23 62 5 51 27 8 1 97 5 35 30 79 7 48 1 57...

Page 47: ...art names Air outlet Air inlet Air filter on some models Drain hose Electric control box Refrigerant connecting pipe 4 Service Place Air outlet Air inlet 20cm 7 9in 11 8in 23 6inx23 6in 60cmx60cm chec...

Page 48: ...ments sometimes the pipe connections need a transfer connector installed on the outdoor unit 1 on some models Transfer connector 6 35 9 52 0 25in 0 375in Packed with the indoor unit NOTE Pipe size may...

Page 49: ...IDU A6 Duct 8 6 Fan Performance 18K...

Page 50: ...IDU A6 Duct 9 Constant air volume...

Page 51: ...5 79 5 79 5 79 5 79 6 19 6 19 6 19 6 19 S T 0 67 0 72 0 76 0 81 0 58 0 62 0 67 0 71 0 54 0 58 0 62 0 66 0 44 0 48 0 52 0 56 PI 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 13 1 13 1...

Page 52: ...12 2 14 2 14 2 14 2 14 880 15 TC 5 74 5 74 5 80 5 86 6 05 6 05 6 05 6 11 6 20 6 20 6 20 6 20 6 57 6 57 6 57 6 57 S T 0 74 0 85 1 00 1 00 0 58 0 68 0 77 0 98 0 50 0 60 0 70 0 79 0 34 0 42 0 51 0 60 PI...

Page 53: ...8 4 7 1 79 1 85 1 84 1 85 5 6 4 8 4 8 4 7 4 7 1 76 1 79 1 81 1 82 2 8 4 9 4 9 4 8 4 8 1 71 1 74 1 75 1 76 0 0 5 0 4 9 4 8 4 8 1 66 1 69 1 70 1 71 2 8 5 1 5 1 5 0 5 0 1 63 1 65 1 66 1 67 5 6 5 5 5 5 5...

Page 54: ...nal operation condition Reference acoustic pressure OdB 20 Pa Sound level will vary depending on a range of factors such as theconstruction acousticabsorptioncoefficient ofparticular room in which the...

Page 55: ...IDU A6 Duct 17 0 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Sound Pressure Level dB 0dB 0 0002 bar Band Center Frequency Hz H M L NC 70 NC 60 NC 50 NC 40 NC 30...

Page 56: ...0 4 2 5 with auxiliary electric heater Weak Electric Signal 10 Electrical Wiring Diagrams IDU Model IDU Wiring Diagram Field Wiring Diagram V6MDI32 18WiFiR 16023000008817 16022700001415 Abbreviation P...

Page 57: ...e on off function AC FAN Y G WHITE WHITE GRAY CN4 P1 P2 BLACK BROWN M 5 3 FOR SETTING FAN MOTOR CONTROL WHEN THERE IS NO DEMAND 1 ON 1 ON SW2 FAN OFF FAN ON MODE FACTORY SETTING 1 2 ON 1 2 ON 1 2 ON 1...

Page 58: ...g diagram 16022700001415 1 L 2 N S 1 2 3 1 L 2 N S 1 2 3 OUTDOOR UNIT OUTDOOR UNIT Power supply 24K 3 core cable 3x2 5mm 25K 36K 3 core cable 3x4 0mm 37K 3 core cable 3x6 0mm 1 Phase 208 240V 2 2 2 2...

Page 59: ...re L N of the motor 2 The output voltage is the power supply 3 The fresh motor can not excess 200W or 1A follow the smaller one 4 The new fresh motor will be worked when the indoor fan motor work when...

Page 60: ...ut no voltage of the terminal port the power from the ALARM system not from the unit 2 Although design voltage can support higher voltage but we strongly ask you connect the power less than 24V curren...

Page 61: ...pen the remote switch the unit would be responded the demand within 2 seconds 5 When the remote switch on you can use remote controller wire controller to select the mode what you want when the remote...

Page 62: ...OM setting reserved for special customizing FOR SETTING FAN MOTOR CONTROL WHEN THERE IS NO DEMAND 1 ON 1 ON SW2 FAN OFF FAN ON MODE FACTORY SETTING B Micro switch SW2 is for selection of indoor FAN AC...

Page 63: ...l switch S2 are for address setting when you want to control this unit by a central controller Range 00 63 106 140 161 200 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5...

Page 64: ...gs 3 3 Part names 4 4 Service Place 5 5 Accessories 6 6 Air Velocity and Temperature Distributions 7 7 Capacity Tables 15 8 Noise Criterion Curves 19 9 Electrical Characteristics 21 10 Electrical Wiri...

Page 65: ...e controllerto direct air flow to every corner of the room 1 3 Easy Maintenance Universal Spare Parts More than 60 parts and assemblies such as fan wheel plastic cases metal parts etc are universal fo...

Page 66: ...IDU Floor Ceiling 3 2 Dimensional Drawings Model KBtu h Unit A B C D 18 mm 1068 675 235 983 inch 42 05 26 57 9 25 38 7...

Page 67: ...IDU Floor Ceiling 4 3 Part names Air inlet Display panel Air outlet grille Louver Installation part...

Page 68: ...IDU Floor Ceiling 5 4 Service Place 35mm 1 38in 1m 3 28ft 35mm 1 38in 35mm 1 38ch...

Page 69: ...e some models Remote controller 1 Fixing screw for remote controller holder ST2 9 x 10 2 Remote controller holder 1 Dry battery AAA 2 Remote controller illustration 1 EMC Magnetic Ring some models Mag...

Page 70: ...IDU Floor Ceiling 7 6 Air Velocity and Temperature Distributions 18K Ceiling installation Discharge Angle 30 Cooling airflow velocity distributions Cooling temperature distributions...

Page 71: ...IDU Floor Ceiling 8 Ceiling installation Discharge Angle 60 Cooling airflow velocity distributions Cooling temperature distributions...

Page 72: ...IDU Floor Ceiling 9 Ceiling installation Discharge Angle 30 Heating airflow velocity distributions Heating temperature distributions...

Page 73: ...IDU Floor Ceiling 10 Ceiling installation Discharge Angle 60 Heating airflow velocity distributions Heating temperature distributions...

Page 74: ...IDU Floor Ceiling 11 Floor installation Discharge Angle 30 Cooling airflow velocity distributions Cooling temperature distributions...

Page 75: ...IDU Floor Ceiling 12 Floor installation Discharge Angle 60 Cooling airflow velocity distributions Cooling temperature distributions...

Page 76: ...IDU Floor Ceiling 13 Floor installation Discharge Angle 30 Heating airflow velocity distributions Heating temperature distributions...

Page 77: ...IDU Floor Ceiling 14 Floor installation Discharge Angle 60 Heating airflow velocity distributions Heating temperature distributions...

Page 78: ...74 5 79 5 79 5 79 5 79 6 19 6 19 6 19 6 19 S T 0 71 0 80 0 88 0 96 0 58 0 65 0 73 0 81 0 51 0 59 0 66 0 74 0 37 0 44 0 51 0 58 PI 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 14 1 13 1 13...

Page 79: ...2 2 12 2 14 2 14 2 14 2 14 880 15 TC 5 74 5 74 5 80 5 86 6 05 6 05 6 05 6 11 6 20 6 20 6 20 6 20 6 57 6 57 6 57 6 57 S T 0 74 0 85 1 00 1 00 0 58 0 68 0 77 0 98 0 50 0 60 0 70 0 79 0 34 0 42 0 51 0 60...

Page 80: ...1 61 7 0 4 56 4 50 4 47 4 47 1 65 1 70 1 69 1 71 5 6 4 63 4 57 4 54 4 54 1 62 1 65 1 67 1 68 2 8 4 69 4 66 4 63 4 60 1 58 1 61 1 62 1 64 0 0 4 72 4 66 4 63 4 60 1 54 1 57 1 58 1 60 2 8 4 89 4 84 4 81...

Page 81: ...minal operation condition Reference acoustic pressure OdB 20 Pa Sound level will vary depending on a range of factors such as theconstruction acousticabsorptioncoefficient ofparticular room in which t...

Page 82: ...ng 20 V6MKI32 18WiFiR match with U6MRS32 18 0 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Sound Pressure Level dB 0dB 0 0002 bar Band Center Frequency Hz H M L NC 70 NC 60 N...

Page 83: ...hase Frequency and Voltage 220 240V 50Hz Circuit Breaker Fuse A 25 20 Indoor Unit Power Wiring mm2 Outdoor Unit Power Wiring mm2 3 2 5 Indoor Outdoor Connecting Wiring mm2 Ground Wiring 2 5 Strong Ele...

Page 84: ...gram V6MKI32 18WiFiR 16022700002948 Abbreviation Paraphrase Y G Yellow Green Conductor CAP1 Indoor Fan Capacitor FAN1 Indoor Fan PUMP PUMP L LIVE N NEUTRAL TO CCM Comm Bus Central Controller T1 Indoor...

Page 85: ...CN2 BLACK BLUE CN3 YELLOW Y G L N S TO OUTDOOR UNIT MAGNETIC RING M 1 2 ON 1 2 ON 1 2 ON 1 2 ON SW1 24 15 8 EEPROM DEFAULT FACTORY SETTING FOR ANTI COLD WIND MODE FOR SETTING FAN MOTOR CONTROL WHEN T...

Page 86: ...re L N of the motor 2 The output voltage is the power supply 3 The fresh motor can not excess 200W or 1A follow the smaller one 4 The new fresh motor will be worked when the indoor fan motor work when...

Page 87: ...ut no voltage of the terminal port the power from the ALARM system not from the unit 2 Although design voltage can support higher voltage but we strongly ask you connect the power less than 24V curren...

Page 88: ...pen the remote switch the unit would be responded the demand within 2 seconds 5 When the remote switch on you can use remote controller wire controller to select the mode what you want when the remote...

Page 89: ...ding to EEROM setting reserved for special customizing FOR SETTING FAN MOTOR CONTROL WHEN THERE IS NO DEMAND 1 ON 1 ON SW2 FAN OFF FAN ON MODE FACTORY SETTING B Micro switch SW2 is for selection of in...

Page 90: ...S1 and dial switch S2 are for address setting when you want to control this unit by a central controller Range 00 63 106 140 161 200 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8...

Page 91: ...nts 1 Dimensional Drawings 2 2 Service Place 9 3 Capacity Correction Factor for Height Difference 10 4 Noise Criterion Curves 16 5 Refrigerant Cycle Diagrams 18 6 Electrical Wiring Diagrams 19 Outdoor...

Page 92: ...Outdoor Unit 2 1 Dimensional Drawings Please check the corresponding dimensional drawing according to the panel plate ODU Model Panel Plate U6MRS32 18 B30...

Page 93: ...Outdoor Unit 3 Panel Plate B30...

Page 94: ...Outdoor Unit 4 Panel Plate BA30...

Page 95: ...Outdoor Unit 5 Panel Plate CA30...

Page 96: ...Outdoor Unit 6 Panel Plate D30...

Page 97: ...Outdoor Unit 7 Panel Plate E30...

Page 98: ...Outdoor Unit 8 Panel Plate 590...

Page 99: ...Outdoor Unit 9 2 Service Place...

Page 100: ...970 0 1 000 0 993 0 978 0 970 Outdoor Upper than Indoor 5 0 992 0 985 0 970 0 962 10 0 977 0 962 0 955 Capacity Btu h 18k Pipe Length m Cooling 5 10 20 30 Height difference H m Indoor Upper than Outd...

Page 101: ...ndoor 5 1 000 0 989 0 968 0 947 0 926 0 905 10 0 989 0 968 0 947 0 926 0 905 20 0 968 0 947 0 926 0 905 25 0 947 0 926 0 905 Heating 5 10 20 30 40 50 Height difference H m Indoor Upper than Outdoor 25...

Page 102: ...ndoor 5 1 000 0 984 0 951 0 919 0 886 0 854 10 0 984 0 951 0 919 0 886 0 854 20 0 951 0 919 0 886 0 854 25 0 919 0 886 0 854 Heating 5 10 20 30 40 50 Height difference H m Indoor Upper than Outdoor 25...

Page 103: ...ndoor 5 1 000 0 972 0 945 0 917 0 876 0 834 10 0 972 0 945 0 917 0 876 0 834 20 0 945 0 917 0 876 0 834 30 0 917 0 876 0 834 Heating 5 15 25 35 50 65 Height difference H m Indoor Upper than Outdoor 30...

Page 104: ...ndoor 5 1 000 0 971 0 941 0 912 0 868 0 824 10 0 971 0 941 0 912 0 868 0 824 20 0 941 0 912 0 868 0 824 30 0 912 0 868 0 824 Heating 5 15 25 35 50 65 Height difference H m Indoor Upper than Outdoor 30...

Page 105: ...ndoor 5 1 000 0 966 0 931 0 897 0 846 0 794 10 0 966 0 931 0 897 0 846 0 794 20 0 931 0 897 0 846 0 794 30 0 897 0 846 0 794 Heating 5 15 25 35 50 65 Height difference H m Indoor Upper than Outdoor 30...

Page 106: ...Data is valid at nominal operation condition Reference acoustic pressure OdB 20 Pa Sound level will vary depending on arrange off actors such as the construction acoustic absorption coefficient of par...

Page 107: ...Unit 17 U6MRS32 18 0 10 20 30 40 50 60 70 80 63 125 250 500 1000 2000 4000 8000 Octave Band Sound Pressure Level dB 0dB 0 0002 bar Band Center Frequency Hz Cooling Heating NC 70 NC 60 NC 50 NC 40 NC...

Page 108: ...efrigerant Cycle Diagrams Model No Pipe Size Diameter mm inch Piping length m ft Elevation m ft Additional Refrigerant Gas Liquid Rated Max Rated Max U6MRS32 18 12 7 1 2 6 35 1 4 5 16 4 30 98 4 0 20 6...

Page 109: ...Outdoor Unit 19 6 Electrical Wiring Diagrams ODU Model ODU Wiring Diagram ODU Main Printed Circuit Board U6MRS32 18 16022000022493 17122000002718...

Page 110: ...Wiring Diagrams Outdoor unit wiring diagram 16022000022493...

Page 111: ...Outdoor unit printed circuit board diagram 17122000002718...

Page 112: ...pipe temp sensor T3 ambient temp sensor T4 exhaust temp sensor TP 8 TP T4 T3 CN21 connect to pipe temp sensor T3 ambient temp sensor T4 exhaust temp sensor TP 9 PMV CN31 connect to Electric Expansion...

Page 113: ...Installation 4 Outdoor Unit Installation 5 Drainage Pipe Installation 6 Refrigerant Pipe Installation 7 Vacuum Drying and Leakage Checking 8 Additional Refrigerant Charge 9 Engineering of Insulation...

Page 114: ...3 MC MC 4 5 6 7 8 Install the indoor unit Install the outdoor unit Install the drainpipe Connect the wires Connect the refrigerant pipes Evacuate the refrigeration system Install the panel only for c...

Page 115: ...minimum distance between the outdoor unit and walls described in the installation guide does not apply to airtight rooms Be sure to keep the unit unobstructed in at least two of the three directions M...

Page 116: ...nel dimensions 4 Refrigerant piping 5 Suspension bolt 4 6 Ceiling opening dimensions 7 Hanger bracket 8 Ceiling board 2 Drill 4 holes 5cm 2 deep at the ceiling hook positions in the internal ceiling B...

Page 117: ...e embedded in advance Make sure that the hooks do not come loose due to concrete shrinkage After installing the indoor unit fasten the installation paper template onto the unit with bolts M6X12 to det...

Page 118: ...the buckles at the back of the grille be properly seated in the groove of the panel 3 3 4 Connect the two wires of the panel to the main board of the unit 3 3 5 Fasten the control box lid with two scr...

Page 119: ...ll as indoor and outdoor wires with their connection points before mounting the unit 5 Drill 4 holes 10cm 4 deep at the ceiling hook positions in the internal ceiling Be sure to hold the drill at a 90...

Page 120: ...uce noise if the end user requires 3 4 Adjust the air inlet direction From rear side to under side 1 Take off ventilation panel and flange Air return flange Ventilation panel 2 Change the mounting pos...

Page 121: ...the cut was made and consolidate the roof beam 2 After the selection of the installation location position the refrigerant pipes drain pipes and indoor and out door wires to the connection points befo...

Page 122: ...side Wall Mounted Installation 8 Mount the indoor unit onto the hanging screw bolts with a block Position the indoor unit on a flat level by using a level to prevent leaks Screw nut Washer Hanging scr...

Page 123: ...75 4 3 Install Outdoor Unit Fix the outdoor unit with anchor bolts M10 60cm 23 6 Fix with bolts Caution Since the gravity center of the unit is not at its physical center so please be careful when lif...

Page 124: ...ng table is for reference PVC pipe Reference value of inner diameter of pipe mm Allowable maximum water flowrate l h Remark Slope 1 50 Slope 1 100 PVC25 20 39 27 For branch pipe PVC32 25 70 50 PVC40 3...

Page 125: ...The length of lifting pipe should not exceed 750mm 29 5in The drainage pipe should be set down inclined after the lifting pipe immediately to avoid wrong operation of water level switch Refer the fol...

Page 126: ...he maximum permissive length is based on the system reliability 2 Oil traps If the indoor unit is installed higher than the outdoor unit If oil flows back into the outdoor unit s compressor this might...

Page 127: ...over or adhesive tape to avoid duct or exog enous impurity come into the pipe 7 Drill holes if the pipes need to pass the wall 8 According to the field condition to bend the pipes so that it can pass...

Page 128: ...r 1 5 hours of drying check whether there is leakage source 4 Leakage test After the vacuum degree reaches 755mmHg stop vacuum drying and keep the pressure for 1 hour If the indicator of vacuum gauge...

Page 129: ...arging The air in the flexible pipe and manifold gauge should be exhausted After finished refrigerant recharge process check whether there is refrigerant leakage at the connec tion joint part Using ga...

Page 130: ...Electrical Wring 1 Highlights of electrical wiring installation All field wiring construction should be finished by qualified electrician Air conditioning equipment should be grounded ac cording to th...

Page 131: ...lowing points Indoor unit Whether the switch on the remote controller works well Whether the buttons on the remote controller works well Whether the air flow louver moves normally Whether the room tem...

Page 132: ...Contents 1 First Time Installation Check 2 2 Refrigerant Recharge 4 3 Re Installation 5 3 1 Indoor Unit 5 3 2 Outdoor Unit 7 Maintenance...

Page 133: ...ure from affecting the air conditioner s performance the indoor unit as well as the pipes between the indoor and outdoor unit must be be leak tested and evacuated Leak test soap water method Use a sof...

Page 134: ...g for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valv...

Page 135: ...in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight...

Page 136: ...s gas service port 3 Open the Handle Lo manifold valve to purge air from the charge hose for 5 seconds and then close it quickly 4 Close the 2 way valve 5 Operate the air conditioner in cooling mode C...

Page 137: ...icates 0 1 MPa 14 5 Psi If the meter does not indicate 0 1 MPa 14 5 Psi after 30 minutes continue evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 min...

Page 138: ...tem for approximately one hour Confirm that the compound meter indicates 0 1 MPa 14 5Psi 4 Close the valve Low side on the charge set and turn off the vacuum pump 5 Wait for 5 minutes then check wheth...

Page 139: ...er to ensure a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the...

Page 140: ...ration Function 9 3 9 Timer Function 10 3 10 ECO Function 10 3 11 Auto Restart Function 10 3 12 Drain Pump Control 10 4 Optional Functions 11 5 Remote Controller Functions 12 5 1 Infrared Wireless Rem...

Page 141: ...icator Infrared receiver PRE DEF pre heating defrost indicator MANUAL TIMER ALARM OPERATION DEF FAN Display 3 Display 4 Infrared receiver LED display PRE DEF pre heating defrost indicator MANUAL TIMER...

Page 142: ...ator Timer indicator LED display Alarm indicator Infrared receiver PRE DEF pre heating defrost indicator Display 1 PRE DEF pre heating defrost indicator Infrared receiver Operation indicator Timer ind...

Page 143: ...4 Compact Cassette Type Console Type Infrared receiver Timer indicator PRE DEF pre heating defrost indicator Operation indicator Manual button Note Please select the display function according to your...

Page 144: ...ult count 0 No malfunction 1 P0 Overcurrent 2 Overpressure 3 Overload 4 Over speed 5 Startup malfunction 6 Lack of phase 7 DC voltage too low 8 Communication fault 9 Parameter fault 10 L3 Current limi...

Page 145: ...ol Defrosting Mode Anti cold Air Function Cases Case 1 Compressor Frequency and T4 Case 2 T4 Case 1 T3 and T4 15 min Case 2 T3 10 min Case 1 Case 2 Models V6MDI32 18WiFiR V6MCRI32 18WiFiR V6MKI32 18Wi...

Page 146: ...ressor ceases operation When calculated frequency fb is less than minimum limit frequency FminC When protective time is more than or equal to ten minutes When T1 is lower than or equal to Tsc CDIFTEMP...

Page 147: ...en compressor running frequency is equal to test frequency T4 is more than 15 C or no T4 or T4 fault Change setting temperature Turbo or sleep function on off 2 When the current is higher than the pre...

Page 148: ...consecutively in defrosting mode 3 5 5 Evaporator Coil Temperature Protection When the evaporator temperature exceeds a preset protection value the compressor ceases operation 3 6 Auto mode This mode...

Page 149: ...creases 1 C to not lower than 17 C every hour After 2 hours the temperature stops decreasing and the indoor fan is fixed at low speed Anti cold wind function takes priority The operating time for slee...

Page 150: ...nction is active Once active the remote control will send a signal every 3 minutes with no beeps The unit automatically sets the temperature according to the measurements from the remote control The u...

Page 151: ...ss the Mode and Fan speed button simultaneously for 2 seconds The remote controls into faceplate setting state and the LCD shows F2 Press the TEMPUP to control the faceplate up and press the TEMP DOWN...

Page 152: ...tion is activated 13 RESET inner located Once the recessed RESET button is pressed all of the current settings will be cancelled and the controller will return to the initial settings 5 1 2 RG57B2 BGE...

Page 153: ...uding operating mode setting temperature fan speed level and sleep feature if activated If pushing more than 2 seconds the system will automatically restore the current operation settings including op...

Page 154: ...electric heater function becomes ineffective Used to restore the system to its default settings Used to start stop the air conditioner Press these two buttons at the same time to switch between Celsi...

Page 155: ...r unit 5 Core Shield Cable Wire Joint 5p Infrared Pipe Indoor Unit RUN GND 5V Indoor Unit Switch Board Wir e Con troll er Installation Diagram Connect the wire from the display panel of the indoor uni...

Page 156: ...o seal the wires For exposed mounting cut holes on four of the sides according to the picture below Cut three holes for wire outlet Cut one holes for wire outlet For shielded wiring please refer to th...

Page 157: ...an setting or call up the menu 11 BACK button Back to previous operation or superior menu 12 COPY button Copy timer setting of one day to another in weekly schedule setting 13 Infrared remote receiver...

Page 158: ...ation 12 Room temperature indication 13 Clock display 14 On Off timer 15 Timer display 1 Operation mode indication 2 Fan speed indication 3 Left right swing indication 4 Up down swing indication 5 Fac...

Page 159: ...sert of the mainboard CN40 Wire controller Indoor unit mainboard 4 Core Shield Cable the length is decided by installation Installation Diagram Connect the female joint of wires group from the main bo...

Page 160: ...wires For exposed mounting four outletting positions There are three need cutting Cutting place of top side wire outlet Cutting place of left side wire outlet Cutting place of right side wire outlet F...

Page 161: ...nd timer set up or down the auto lifting panel 4 FAN SPEED button Usedtoselect the fan speed 5 Swing Button Press to active vertical swing hold for horizontal swing 6 TIMER button To set timer on and...

Page 162: ...Lock indication 12 Room temperature indication 13 Clock display 14 On Off timer 15 Timer display 1 Operation mode indication 2 Fan speed indication 3 Left right swing indication 4 Up down swing indica...

Page 163: ...ontroller connects to main control board directly HA HB HA HB Main control board Wired controller ADSS 01 2 3 4 5 6 7 8 9 A B C D EF For Duct Ceiling floor The wired controller connects to terminal bo...

Page 164: ...to several units every air conditioner in network has only one network address to distinguish each other c Address code of air conditioner in LAN is set by code switch ENC1 Duct and Ceiling Floor or...

Page 165: ...ndoor unit there are three methods From the rear From the bottom From the top From the top center PCB PCB PCB PCB HA HB 1 2 HA HB HA HB 2 HA HB 1 2 1 2 3 4 1 Indoor Unit 2 Notch the part for the wirin...

Page 166: ...ered off The address can be set from 0 to 63 by the switch Turn on the unit then the address will be effective Note For light commercial aire conditioner with XYE port it can be also connected to BMS...

Page 167: ...tton and FAN button down together for three seconds AF indicator flashes for 3 times Press or to select the AF Press MODE The air conditioning unit will then start the fan for airflow automatic adjust...

Page 168: ...parameter error Diagnosis and Solution 18 7 2 E1 Indoor and outdoor unit communication error Diagnosis and Solution 19 7 3 E3 F5 Fan speed is operating outside of the normal range Diagnosis and Soluti...

Page 169: ...ver Voltage or Too Low Voltage Protection Diagnosis and Solution 28 7 10 P4 Inverter Compressor Drive Error Diagnosis and Solution 29 7 11 P6 Low Pressure Protection Diagnosis and Solution 30 7 12 P7...

Page 170: ...gloves or wrist strap to avoid damage to the board WARNING Electricity remains in capacitors even when the power supply is off Ensure the capacitors are fully discharged before troubleshooting Test th...

Page 171: ...8 times OFF EE Water level alarm malfunction TS25 1 times ON F0 Current overload protection TS26 2 times ON F1 Outdoor room temperature sensor T4 is in open circuit or has short circuited TS25 3 times...

Page 172: ...code undefined by the service manual Ensure that this code is not a temperature reading Troubleshooting Test the unit using the remote control If the unit does not respond to the remote the indoor PC...

Page 173: ...outlet C F Installation Condition Information Indoor temperature C F Indoor humidity RH Outdoor temperature C F Outdoor humidity RH Length of Connecting pipe Pipe diameter Gas pipe Liquid pipe Length...

Page 174: ...il temperature T4 Ambient temperature TP Discharge temperature FT Targeted Frequency Fr Actual Frequency dl Compressor current Uo Outdoor AC voltage Sn Indoor capacity test Reserve Pr Outdoor fan spee...

Page 175: ...able shows information codes The screen displays this code for 1 2 seconds then the information for 25 seconds Displayed code Explanation Additional Notes Error code Refer to next list of error code T...

Page 176: ...perature sensor TP is in open circuit or has short circuited E51 Outdoor unit EEPROM parameter error E7 The outdoor fan speed is operating outside of the normal range P0 IPM malfunction or IGBT over s...

Page 177: ...91 Evaporator coil temperature over low Protection PF PFC module malfunction L5 Frequency limit caused by voltage L3 Frequency limit caused by current L2 Frequency limit caused by TP L1 Frequency limi...

Page 178: ...field maintenance No Problem Solution 1 Unit will not start TS13 TS14 2 The power switch is on but fans will not start TS13 TS14 3 The temperature on the display board cannot be set TS13 TS14 4 Unit...

Page 179: ...TS16 5 Condenser Outdoor fan will not start TS15 TS16 6 Unit runs but shortly stops TS15 TS16 7 Compressor short cycles due to overload TS15 TS16 8 High discharge pressure TS15 TS16 9 Low discharge p...

Page 180: ...frequently Unit will not start The power switch is on but fans will not start The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The...

Page 181: ...switch is on but fans will not start The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The unit starts up and stops frequently Unit...

Page 182: ...Condenser Outdoor fan will not start Unit runs but shortly stops Compressor short cycles due to overload High discharge pressure Low discharge pressure High suction pressure Low suction pressure Unit...

Page 183: ...art but fans run Compressor and condenser outdoor fan will not start Evaporator indoor fan will not start Condenser Outdoor fan will not start Unit runs but shortly stops Compressor short cycles due t...

Page 184: ...Sensor x x x x x x x x x T4 Sensor x x x x x x x x x Reactor x x x x x x x x x Compressor x x x x x x x x x Additional refrigerant x x x x x x x x Water level switch x x x x x x x x x Water pump x x x...

Page 185: ...CB F4 The unit is operating normally NO Remarks EEPROM A read only memory whose contents can be erased and reprogrammed using a pulsed voltage The location of the EEPROM chip on the indoor and outdoor...

Page 186: ...N YES Is the voltage moving alternately between Positive and negative Check the outdoor wiring connection Is it normal Check the reactor YES Is it normal Replace the outdoor PCB Power on YES Is the e...

Page 187: ...as positive values and negative values If the outdoor unit has malfunction the voltage has always been the positive value While if the indoor unit has malfunction the voltage has always been a certain...

Page 188: ...start the unit after 2 minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it...

Page 189: ...able the PCB must has problems and need to be replaced No Color Signal Voltage 1 Red Vs Vm 200V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Blue FG 13 5 16 5V 2 Outdoor DC Fan M...

Page 190: ...epair Check the connection between temperature sensor and PCB Replace indoor PCB E4 E5 or outdoor PCB F1 F2 F3 Is it within acceptable parameters Is it properly wired Ensure proper connections NO Meas...

Page 191: ...on happens 3 times the display area will show EC and AC will turn off Recommended parts to prepare T2 sensor Indoor PCB Additional refrigerant Troubleshooting and repair Power off then restart the uni...

Page 192: ...Does a problem remain YES Is the water level switch inserted properly Is the water level switch inserted properly Replace the indoor main PCB Replace the indoor main PCB YES The unit is operating norm...

Page 193: ...able parameters Are they properly connected Is it in working order Replace the outdoor unit Is it in working order Check system for blockages YES Stop the unit NO Clear the blockage Yes Check the comp...

Page 194: ...Does an error exist Ensure proper connections or replace the wires and connectors YES Check the IPM NO Is it in working order Replace the IPM board or replace the outdoor PCB NO Check the outdoor fan...

Page 195: ...the unit NO Check the connections and wires YES Are they in working order Ensure proper connections or replace the wires NO Power on and measure the voltage between P and N YES While the unit is in s...

Page 196: ...e wiring between the PCB and compressor Is it improperly wired Ensure proper connections or replace the wires and connectors YES Check the IPM NO Is it functioning properly Replace the IPM board or re...

Page 197: ...gh pressure valve fully opened Is the valve core of the high pressure valve fully opened Is the indoor fan running properly in cooling mode Is the indoor fan running properly in cooling mode Refer to...

Page 198: ...e of IPM module is higher than a certain value the LED displays the failure Recommended parts to prepare Outdoor PCB IPM module board Troubleshooting and repair Check the fastening screws on the PCB a...

Page 199: ...r Unit Disassembly 2 Measure the resistance value of the sensor using a multi meter 3 Check corresponding temperature sensor resistance value table Refer to Chapter 8 Appendix Note The picture and the...

Page 200: ...Troubleshooting 33 Resistance Value KSN140D21UFZ Blue Red 1 28 Blue Black Red Black Note The picture and the value are only for reference actual condition and specific value may vary...

Page 201: ...upply 2 Discharge electrolytic capacitors and ensure all energy storage unit has been discharged 3 Disassemble outdoor PCB or disassemble IPM board 4 Measure the resistance value between P and U V W N...

Page 202: ...Contents 1 Indoor Unit Disassembly 1 1 1 Front Panel and Display Board 2 1 2 Electrical Parts 5 1 3 Fan Motor and Fan 7 1 4 Water Pump 9 1 5 Evaporator 11 Indoor Unit Disassembly Compact Cassette...

Page 203: ...1 1 Front Panel and Display Board Procedure Illustration 1 Release 2 hooks and open the panel see CJ_MCA_001 2 Remove two screws of wire line see CJ_MCA_002 CJ_MCA_001 CJ_MCA_002 Note This section is...

Page 204: ...Illustration 3 Release the hook then pull up the filter see CJ_MCA_003 4 Remove 4 screws of cover and remove the display board see CJ_MCA_004 CJ_MCA_003 CJ_MCA_004 Note This section is for reference...

Page 205: ...Indoor Unit Disassembly 4 Procedure Illustration 5 Remove 2 screws of display board and remove PCB see CJ_MCA_005 CJ_MCA_005 Note This section is for reference only Actual unit appearance may vary...

Page 206: ...er to 1 1 Front Panel and display before disassembling electrical parts Procedure Illustration 1 Remove 4 screws of the panel and pull up the panel see CJ_ MCA_006 2 Remove 3 screws of electrical cove...

Page 207: ...see CJ_MCA_008 4 Remove 2 screws of main control board and remove PCB see CJ_ MCA_009 5 Remove 2 screws of electronic control box and remove electronic control box see CJ_MCA_010 CJ_MCA_008 CJ_MCA_00...

Page 208: ...efer to 1 1 1 2 before disassembling fan motor Procedure Illustration 1 Remove 4 screws of water collector then remove it see CJ_MCA_011 2 Remove the nut of the fan and then pull up the fan see CJ_MCA...

Page 209: ...Indoor Unit Disassembly 8 Procedure Illustration 3 Remove the nuts and remove the fan motor see CJ_MCA_013 CJ_MCA_013 Note This section is for reference only Actual unit appearance may vary...

Page 210: ...to 1 1 1 2 1 3 before disassembling water pump Procedure Illustration 1 Take off the fasten belt of the water pump see CJ_MCA_014 2 Pinch the metal wire in the direction shown in the figure to release...

Page 211: ...Indoor Unit Disassembly 10 Procedure Illustration 3 Remove 3 screws and then remove the water pump see CJ_MCA_016 CJ_MCA_016 Note This section is for reference only Actual unit appearance may vary...

Page 212: ...1 2 1 3 before disassembling evaporator Procedure Illustration 1 Remove 3 screws of pipe clamp board assembly then remove it see CJ_MCA_017 2 Remove 4 screws of evaporator fixing board then remove it...

Page 213: ...door Unit Disassembly 12 Procedure Illustration 3 Remove 1 screw of evaporator fixing hook and remove it see CJ_MCA_019 CJ_MCA_019 Note This section is for reference only Actual unit appearance may va...

Page 214: ...Contents 1 Indoor Unit Disassembly 1 1 1 Electrical Parts 2 1 2 Fan Motor and Fan 5 1 3 Evaporator 7 Indoor Unit Disassembly A6 DUCT...

Page 215: ...e Illustration 1 Remove 5 screws of the cover of electronic control box and then remove the cover see CJ_A6_001 2 Remove 2 screws of the electronic control box Then release 2 hooks of the main control...

Page 216: ...and then remove the front main control board see CJ_A6_003 4 Turn over the electronic control box Disconnect the connectors and remove 2 screws of rear main control board see CJ_A6_004 CJ_A6_003 CJ_A...

Page 217: ...Indoor Unit Disassembly 4 Procedure Illustration 5 Remove 2 screws of reactor and remove the reactor see CJ_A6_005 CJ_A6_005 Note This section is for reference only Actual unit appearance may vary...

Page 218: ...an Procedure Illustration 1 Remove 10 screws of the top cover and then remove the top cover see CJ_A6_006 2 Release 3 hooks of volute shell see CJ_A6_007 CJ_A6_006 CJ_A6_007 Note This section is for r...

Page 219: ...Indoor Unit Disassembly 6 Procedure Illustration 3 Remove the fiing screws of fan 2 screws see CJ_A6_008 CJ_A6_008 Note This section is for reference only Actual unit appearance may vary...

Page 220: ...r collecter and remove the water collecter see CJ_A6_009 2 Remove the screws of the pipe clamp board and the left side board 3 for the pipe clamp and 9 for left side board see CJ_A6_010 CJ_A6_009 CJ_A...

Page 221: ...ove 2 screws of the evaporator support and then pull up the temperature sensor see CJ_A6_011 4 Remove the screw of the evaporator and then remove it see CJ_A6_012 CJ_A6_011 CJ_A6_012 Note This section...

Page 222: ...Contents 1 Indoor Unit Disassembly 1 1 1 Front Panel 2 1 2 Electrical Parts 3 1 3 Fan Motor and Fan 4 1 4 Evaporator 7 1 5 Display Board 11 Indoor Unit Disassembly Floor Ceiling...

Page 223: ...cedure Illustration 1 Remove 2 screws of return air grille subassembly and release 2 hooks see CJ_FC_001 2 Release 2 hooks for each filter and then pull up the filter see CJ_FC_002 CJ_FC_001 CJ_FC_002...

Page 224: ...before disassembling electrical part Procedure Illustration 1 Remove 4 screws of the cover of electronic control box and then remove the cover see CJ_FC_003 2 Disconnect the connectors and then remov...

Page 225: ...fore disassembling fan motor and fan Procedure Illustration 1 Remove the fix screw of supporting board see CJ_FC_005 2 Remove the screws of fan motor support and then remove the screw of ground wire s...

Page 226: ...llustration 3 Remove the two screws of the fan motor shaft see CJ_FC_007 4 Release the hooks of the volute shell and then pull up it see CJ_FC_008 CJ_FC_007 CJ_FC_008 Note This section is for referenc...

Page 227: ...Indoor Unit Disassembly 6 Procedure Illustration 5 Remove the screws of fan 3 screws see CJ_FC_009 CJ_FC_009 Note This section is for reference only Actual unit appearance may vary...

Page 228: ...ng evaporator Procedure Illustration 1 Remove the screws of left and right panel and then push it in the direction shown in the figure to move it see CJ_FC_010 2 Remove the screws of the front panel 9...

Page 229: ...cedure Illustration 3 Remove the 1 screw of the water collector see CJ_FC_012 4 Remove 3 screws of board and then remove it see CJ_FC_013 CJ_FC_012 CJ_FC_013 Note This section is for reference only Ac...

Page 230: ...y 9 Procedure Illustration 5 Remove the screws of the pipe clamp board see CJ_FC_014 6 Pull up the temperature sensor see CJ_FC_015 CJ_FC_014 CJ_FC_015 Note This section is for reference only Actual u...

Page 231: ...r support 5 screws see CJ_FC_016 8 Remove the screws of the rear evaporator support then pull out the evaporator 4 screws see CJ_ FC_017 9 Remove 2 screws and Remove step motor see CJ_FC_018 CJ_FC_016...

Page 232: ...Disassembly 11 1 5 Display Board Procedure Illustration 1 Remove 2 screws of display board and remove the display see CJ_ FC_019 CJ_FC_019 Note This section is for reference only Actual unit appearan...

Page 233: ...tdoor Unit Table 2 2 Outdoor Unit Disassembly 3 2 1 Panel Plate 3 2 2 Electrical Parts 19 2 3 Fan Assembly 30 2 4 Fan Motor 31 2 5 Sound Blanket 32 2 6 Four way Valve 33 2 7 Compressor 34 Outdoor Unit...

Page 234: ...Outdoor Unit Disassembly 2 1 Outdoor Unit Disassembly 1 1 Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board U6MRS32 18 B30 PCB Board 4...

Page 235: ...Remove the screws of the big handle and then remove the big handle 1 screws see CJ_BA30_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located und...

Page 236: ...the front panel and then remove the front panel 7 screws see CJ_BA30_003 5 Remove the screws of water collecting cover 1 screw see CJ_BA30_004 CJ_BA30_003 CJ_BA30_004 Note This section is for referenc...

Page 237: ...ar net and then remove the rear net 2 screws see CJ_BA30_005 for some models 7 Remove the screws of the right panel and then remove the right panel 6 screws see CJ_BA30_006 CJ_BA30_005 CJ_BA30_006 Not...

Page 238: ...the big handle and then remove the big handle 1 screws see CJ_B30_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located underneath the big handl...

Page 239: ...then remove the front panel 8 screws see CJ_B30_003 5 Remove the screws of water collecting cover and then remove the water collecting cover 1 screw see CJ_ B30_004 CJ_B30_003 CJ_B30_004 Note This sec...

Page 240: ...rear net and then remove the rear net 2 screws see CJ_B30_005 for some models 7 Remove the screws of the right panel and then remove the right panel 5 screws see CJ_B30_006 CJ_B30_005 CJ_B30_006 Note...

Page 241: ...he big handle and then remove the big handle 1 screws see CJ_CA30_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located underneath the big handle...

Page 242: ...hen remove the front panel 7 screws see CJ_CA30_003 5 Remove the screws of water collecting cover and then remove the water collecting cover 1 screw see CJ_ CA30_004 CJ_CA30_003 CJ_CA30_004 Note This...

Page 243: ...ar net and then remove the rear net 2 screws see CJ_CA30_005 for some models 7 Remove the screws of the right panel and then remove the right panel 7 screws see CJ_CA30_006 CJ_CA30_005 CJ_CA30_006 Not...

Page 244: ...the big handle and then remove the big handle 2 screws see CJ_D30_001 3 Remove the screws of the top cover and then remove the top cover 4 screws Two of the screws is located underneath the big handl...

Page 245: ...t panel and then remove the front right panel 2 screws see CJ_D30_003 5 Remove the screws of the front panel and then remove the front panel 9 screws see CJ_D30_004 CJ_D30_003 CJ_D30_004 Note This sec...

Page 246: ...over and then remove the water collecting cover 2 screw see CJ_ D30_005 7 Remove the screws of the rear net and then remove the rear net 2 screws see CJ_D30_006 for some models CJ_D30_005 CJ_D30_006 N...

Page 247: ...mbly 15 Procedure Illustration 8 Remove the screws of the right panel and then remove the right panel 8 screws see CJ_D30_007 CJ_D30_007 Note This section is for reference only Actual unit appearance...

Page 248: ...screws see CJ_E30_001 3 Remove the screws of the top cover and then remove the top cover 4 screws Two of the screws is located underneath the big handle see CJ_ E30_002 4 Remove the screws of water co...

Page 249: ...mbly 17 Procedure Illustration 5 Remove the screws of the front right panel and then remove the front right panel 2 screws see CJ_E30_004 CJ_E30_004 Note This section is for reference only Actual unit...

Page 250: ...ews of the front panel and then remove the front panel 7 screws see CJ_E30_005 2 Remove the screws of the right panel and then remove the right panel 10 screws see CJ_E30_006 CJ_E30_005 CJ_E30_006 Not...

Page 251: ...black wire connects with terminal 4 see CJ_ODU_ PCB_001 3 Disconnect the wires connected to the compressor Black wire connects with terminal 1 blue wire and red wire connect with the compressor capaci...

Page 252: ...ith subzero refrigeration control board remove 3 screws of it showed in the figure 9 The subzero refrigeration control board is in the back of the medal sheet CJ_ODU_PCB_001 03 CJ_ODU_PCB_001 04 Note...

Page 253: ...ODU_010 2 Disconnect the wires connected to terminals see CJ_ODU_010 3 Disconnect the wires connected to contactor see CJ_ODU_010 4 Disconnect the wires connected to T3 T4 sensor see CJ_ODU_010 5 CJ_O...

Page 254: ...ressure switch see CJ_ ODU_PCB_003 1 3 Disconnect the wires connected to indoor unit see CJ_ODU_PCB_003 1 4 Disconnect the wires connected to AC contactor see CJ_ODU_ PCB_003 1 5 Remove the screws of...

Page 255: ...e the 1 screw of the AC contactor and then remove it see CJ_ODU_PCB_003 3 7 Remove 2 screws of the transformer and then remove it see CJ_ODU_ PCB_003 4 CJ_ODU_PCB_003 3 CJ_ODU_PCB_0003 4 Note This sec...

Page 256: ...e connector for the compressor see CJ_ODU_PCB_004 3 5 Pull out the two blue wires connected with the four way valve CJ_ODU_PCB_004 3 6 Pull out connectors of the condenser coil temp sensor T3 outdoor...

Page 257: ...4 Pull out the two blue wires connected with the four way valve see CJ_ODU_PCB_005 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor...

Page 258: ...ODU_PCB_006 2 4 Pull out the two blue wires connected with the four way valve see CJ_ODU_PCB_006 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and dischar...

Page 259: ...d then open the electronic control box cover 5 hooks see CJ_ODU_PCB_007 2 3 Disconnect the connector for fan motor from the IPM board see CJ_ ODU_PCB_007 3 4 Remove the connector for the compressor se...

Page 260: ...p sensor TP see CJ_ODU_PCB_007 4 7 Disconnect the electronic expansion valve wire see Fig CJ_ODU_PCB_007 4 8 Remove the connector for 4 way valve see Fig CJ_ODU_PCB_007 4 9 Remove the connector for th...

Page 261: ...ted with the four way valve see CJ_ODU_PCB_008 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor TP see CJ_ ODU_PCB_008 2 6 Disconne...

Page 262: ...refer to 3 1 Panel Plate before disassembling fan Procedure Illustration 1 Remove the nut securing the fan with a spanner see CJ_ODU_ FAN_001 1 2 2 Remove the fan CJ_ODU_FAN_001 1 CJ_ODU_FAN_001 2 Not...

Page 263: ...or on PCB refer to 3 1 Panel Plate and 3 2 Electrical parts before disassembling fan motor Procedure Illustration 3 Remove the fixing screws of the fan motor 4 screws see CJ_ODU_MOTOR_001 4 Remove the...

Page 264: ...refer to 3 1 Panel plate before disassembling sound blanket Procedure Illustration 1 Remove the sound blanket side and top see CJ_ODU_BLANKET_001 CJ_ODU_BLANKET_001 Note This section is for reference...

Page 265: ...the two steps before heating up the brazed parts The operations above should be implemented by professionals Note Remove the panel plate connection of four way valve on PCB refer to 3 1 Panel plate an...

Page 266: ...eating up the brazed parts The operations above should be implemented by professionals Note Remove the panel plate connection of compressor on PCB refer to 3 1 Panel plate and 3 2 Electrical parts bef...

Page 267: ...om plate see CJ_ODU_COMP_003 4 Heat up the brazed parts and then remove the the discharge pipe and the suction pipe see CJ_ODU_COMP_004 5 Lift the compressor from the base pan assembly with pliers CJ_...

Page 268: ...Contents i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K 2 ii Temperature Sensor Resistance Value Table for TP for some units C K 3 iii Pressure On Service Port 4 Appendix...

Page 269: ...1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982...

Page 270: ...35 78 75 167 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 10...

Page 271: ...10 3 9 5 10 0 10 6 12 4 13 0 PSI 70 59 21 11 15 93 94 106 116 119 113 117 125 147 154 75 63 23 89 17 22 97 99 115 125 124 120 126 132 155 162 80 67 26 67 19 44 103 104 123 138 135 129 132 140 162 173...

Page 272: ...20 8 18 5 16 5 65 18 33 32 5 30 0 26 6 25 4 23 3 20 5 19 0 75 23 89 33 8 31 5 27 8 26 3 24 9 21 5 20 0 PSI 55 12 78 439 413 367 330 302 268 239 65 18 33 471 435 386 368 339 297 276 75 23 89 489 457 40...

Page 273: ...6 3 6 6 7 8 8 1 PSI 70 59 21 11 15 58 59 67 73 74 71 74 78 91 96 75 63 23 89 17 22 61 62 71 78 78 75 78 83 97 102 80 67 26 67 19 44 64 65 77 86 84 81 83 87 102 107 90 73 32 22 22 78 70 71 87 96 93 86...

Page 274: ...3 13 0 11 6 10 3 65 18 33 20 3 18 8 16 6 15 9 14 6 12 8 11 9 75 23 89 21 1 19 7 17 3 16 4 15 6 13 4 12 5 PSI 55 12 78 274 258 229 207 189 168 149 65 18 33 294 273 241 231 212 186 172 6 75 23 89 306 28...

Page 275: ...12 6 13 3 PSI 70 59 21 11 15 95 96 108 118 121 115 119 128 150 157 75 63 23 89 17 22 99 101 117 128 126 122 129 135 158 165 80 67 26 67 19 44 105 106 125 141 138 132 135 143 165 176 90 73 32 22 22 78...

Page 276: ...1 2 18 9 16 8 65 18 33 33 2 30 6 27 1 25 9 23 8 20 9 19 4 75 23 89 34 5 32 1 28 4 26 8 25 4 21 9 20 4 PSI 55 12 78 448 421 374 337 308 273 244 65 18 33 480 444 394 375 346 303 282 75 23 89 499 466 411...

Page 277: ...656 2200 22 319 55 512 131 922 750 7 5 108 75 13 249 55 848 2250 22 5 326 25 56 527 133 749 800 8 116 15 465 59 837 2300 23 333 5 57 526 135 547 850 8 5 123 25 17 58 63 644 2350 23 5 340 75 58 508 13...

Page 278: ...11 159 5 10 471 50 848 3350 33 5 485 75 53 935 129 083 1150 11 5 166 75 11 988 53 578 3400 34 493 54 593 130 267 1200 12 174 13 457 56 223 3450 34 5 500 25 55 243 131 437 1250 12 5 181 25 14 879 58 7...

Page 279: ...1 850 8 5 123 25 1 393 34 507 2600 26 377 41 977 107 559 900 9 130 5 3 209 37 777 2650 26 5 384 25 42 769 108 984 950 9 5 137 75 4 951 40 911 2700 27 391 5 43 55 110 39 1000 10 145 6 624 43 923 2750 2...

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