Carrier 38QUS012D8S Service Manual Download

Page: 60 / 153

Service Space

Outdoor Units

Service Space

More than 60cm

More than 30cm

More than 60cm

More than 200cm

Air inlet

More than 30cm

Air outlet

(Wall or obstacle)

Maintain channel

Summary of Contents for 38QUS012D8S

Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual...

Page 2: ...Indoor Units 5 Part 3 Outdoor Units 55 Part 4 Installation 68 Part 5 Electrical Control System 95 Caution Risk of fire flammable materials The specifications designs and information in this book are s...

Page 3: ...General Information General Information 1 Part 1 General Information 1 Model List 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 3 Nomenclature 4...

Page 4: ...pressor Brand Matched indoor units 38QUS012D8S Rotary GMCC 42QTD012D8S 42QSS012D8S 38QUS018D8S Rotary GMCC 42QTD018D8S 42QSS018D8S 42QZL018D8S 38QUS018R8S Rotary GMCC 42QTD018R8S 42QSS018R8S 42QZL018R...

Page 5: ...ternal Appearance General Information 3 2 External Appearance 2 1 Indoor Units Compact cassette Super Slim Cassette Ducted Ceiling Floor 2 2 Outdoor Units Single fan outdoor unit Double fan outdoor un...

Page 6: ...e 3 U ni t Type 4 1 dri ve 4 U O ut dooruni t 5 1 dri ve 5 H H i gh w al l S D uct ed P ow er suppl y T C asset t e S Si gl e phase Z U nder cei l i ng T Three phase F C onsol e R efri gerant type O D...

Page 7: ...Indoor Units Indoor Units 5 Part 2 Indoor Units Super Slim Cassette Type 6 A6 Duct Type 22 Ceiling Floor Type 41...

Page 8: ...im Cassette Type 1 Features 7 2 Dimensions 10 3 Service Space 11 4 Wiring Diagrams 12 5 Air Velocity Distributions Reference Data 13 6 Electric Characteristics 16 7 Sound Levels 17 8 Accessories 18 9...

Page 9: ...entilation motor is optional to increase the effect of fresh air 1 3Optional ionizer generator Ionizer generator is optional to get refreshing air to your room Ionizer can be switched on or off by rem...

Page 10: ...ir or replace the draining pump Built in draining pump to make sure condensed water drain out reliably 1 6Terminals for alarm lamp and long distance on off controller connection are standard Reserve t...

Page 11: ...Combination 18k 30k The units can be installed as Twin systems one outdoor unit can connect with two indoor units The indoor units can be combined in any of the different available ratings Alarm lamp...

Page 12: ...1 196 132 A A B A A B A A B A B Service hole for draining pump Fresh air intake 75 55 80 80 4 install hanger Gas side Liquid side E parts box 135 90 Panel Body 92 92 92 92 D D 92 92 D D D D 92 92 92 9...

Page 13: ...Service Space Indoor Units 11 3 Service Space 1000mm 1000mm 1000mm 1000m m Chart 3...

Page 14: ...Wiring Diagrams Indoor Units 12 4 Wiring Diagrams 42QTD018R8S 42QTD024R8S 42QTD036R8S 42QTD048R8S 42QTD060R8S...

Page 15: ...Air Velocity Distributions Reference Data Indoor Units 13 5 Air Velocity Distributions Reference Data 18 24K Cooling Heating...

Page 16: ...Air Velocity Distributions Reference Data Indoor Units 14 30 42K Cooling Heating...

Page 17: ...Air Velocity Distributions Reference Data Indoor Units 15 48 55K Cooling Heating...

Page 18: ...tics Model Indoor Unit Power Supply Hz Voltage Min Max MFA 42QTD018R8S 50 220 240V 198V 254V 10 42QTD024R8S 50 220 240V 198V 254V 10 42QTD036R8S 50 220 240V 198V 254V 10 42QTD048R8S 50 220 240V 198V 2...

Page 19: ...Indoor Units 17 7 Sound Levels 1 4m Microphone Model Noise Power dB A Noise level dB A H M L 42QTD018R8S 57 45 40 37 42QTD024R8S 61 46 43 40 42QTD036R8S 63 51 49 46 42QTD048R8S 65 52 50 49 42QTD060R8S...

Page 20: ...al ring 1 Remote controller Its Frame The product you have might not be provided the following accessories Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2 Remote...

Page 21: ...IRING mm2 3 1 0 3 1 0 3 1 0 CIRCUIT BREAKER Fuse A 15 10 15 10 15 10 Outdoor Power Phase 1 phase 1 phase 3 phase 3 phase Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 380 415V 50Hz 380 415V 50Hz P...

Page 22: ...Field Wiring Indoor Units 20 10 Field Wiring 42QTD018R8S 42QTD024R8S 42QTD036R8S...

Page 23: ...Field Wiring Indoor Units 21 42QTD048R8S 42QTD060R8S...

Page 24: ...s 22 A6 Duct Type 1 Features 23 2 Dimensions 28 3 Service Space 29 4 Wiring Diagrams 30 5 Static Pressure 31 6 Electric Characteristics 36 7 Sound Levels 37 8 Accessories 38 9 The Specification of Pow...

Page 25: ...spaces 18K unit 210mm 24K 36K unit 249mm 48K unit 300mm 1 3 Constant air volume control For ordinary duct when the static pressure exceeds the expected range it is fairly difficult even for an experi...

Page 26: ...munication wire connection A6 duct uses two wires without polarity connection way which almost has no mistake during the installation 1 7 Easy Clean Clean the filter Optional standard product without...

Page 27: ...hed heat exchanger and water receiver tray in behind can be seen very clearly Dust can be easily removed from the inside by vacuum 1 8 Easy maintenance A6 duct allows operators maintenance the motor f...

Page 28: ...from the reserved fresh air intake to outdoor Continually inhale the fresh air to improve the quality of the indoor air fulfills air quality more healthy and comfortable A ventilation motor provided...

Page 29: ...Features Indoor Units 27...

Page 30: ...926 50 175 1001 228 5 1140 598 80 150 130 155 inch 43 31 9 80 30 47 27 56 5 51 36 46 1 97 6 89 39 41 8 98 0 20 44 88 23 54 3 15 5 91 5 12 6 10 36 mm 1360 249 774 700 140 1186 50 175 1261 228 5 1400 5...

Page 31: ...Service Space Indoor Units 29 3 Service Space Ensure enough space required for installation and maintenance...

Page 32: ...Wiring Diagrams Indoor Units 30 4 Wiring Diagrams 42QSS018R8S 42QSS024R8S 42QSS036R8S 42QSS048R8S 42QSS060R8S...

Page 33: ...40 150 160 10 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 56 112 168 224 280 336 392 448 504 560 0 M H 420 140 L M H L 56 112 168 224 280 336 392 448 504 560 0 420 140 Air flow rate L S wit...

Page 34: ...60 10 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 0 56 112 168 224 280 336 392 448 504 560 616 672 56 112 168 224 280 336 392 448 504 560 616 672 L M H L M H Air flow rate L S with filter A...

Page 35: ...0 60 70 80 90 100 110 120 130 140 150 160 0 H M L 728 784 840 896 700 H M L 56 112 168 224 280 336 392 448 504 560 616 672 56 112 168 224 280 336 392 448 504 560 616 672 728 784 840 896 700 Air flow r...

Page 36: ...40 50 60 70 80 90 100 110 120 130 140 150 160 112 224 336 448 560 672 784 896 1008 1120 1232 1344 0 L M H 420 868 L M H 112 224 336 448 560 672 784 896 1008 1120 1232 1344 0 420 868 Air flow rate L S...

Page 37: ...20 130 140 150 160 10 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 L M H L M H 111 222 333 444 555 666 777 888 1000 1111 1222 1333 0 111 222 333 444 555 666 777 888 1000 1111 1222 1333 0 H M...

Page 38: ...teristics Model Indoor Unit Power Supply Hz Voltage Min Max MFA 42QSS018R8S 50 220 240V 198V 254V 42QSS024R8S 50 220 240V 198V 254V 42QSS036R8S 50 220 240V 198V 254V 42QSS048R8S 50 220 240V 198V 254V...

Page 39: ...Levels Suction Discharge Microphone 1 4m Concealed Duct Type Duct Duct Model Sound Power dB A Noise level dB A H M L 42QSS018R8S 60 42 40 38 42QSS024R8S 63 42 40 38 42QSS036R8S 65 45 42 39 42QSS048R8S...

Page 40: ...t s Fitting for some models Magnetic ring twist the electric wires L and N around the magnetic ring to five circles 1 Wired controller Its Frame Wired controller 1 Owner s manual of wired controller 1...

Page 41: ...3 phase 3 phase Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 380 415V 50Hz 380 415V 50Hz POWER WIRING mm2 3 2 5 3 4 0 5 2 5 5 2 5 CIRCUIT BREAKER Fuse A 30 20 40 30 30 20 30 25 Indoor Outdoor Con...

Page 42: ...Field Wiring Indoor Units 40 10 Field Wiring 42QSS018R8S 42QSS024R8S 42QSS036R8S 42QSS048R8S 42QSS060R8S...

Page 43: ...pe 1 Features 42 2 Dimensions 43 3 Service Space 44 4 Wiring Diagrams 45 5 Electric Characteristics 46 6 Sound Levels 46 7 Air Velocity and Temperature Distributions Reference Data 47 8 Accessories 53...

Page 44: ...3 Two direction auto swing vertical horizontal and wide angle air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizo...

Page 45: ...2 Dimensions A B 220 222 C 120 2 40 120 140 2 33 Wiring connection port 204 94 Fresh air intake Drain discharge port Refrigerant pipe hole Hanging arm D Capacity KBtu h A B C D 18 24 1068 675 235 983...

Page 46: ...Service Space Indoor Units 44 3 Service Space...

Page 47: ...Wiring Diagrams Indoor Units 45 4 Wiring Diagrams 42QZL018R8S 42QZL024R8S 42QZL036R8S 42QZL048R8S 42QZL060R8S...

Page 48: ...98V 254V 42QZL036R8S 50 220 240V 198V 254V 42QZL048R8S 50 220 240V 198V 254V 42QZL060R8S 50 220 240V 198V 254V Note MFA Max Fuse Amps A 6 Sound Levels Microphone 1m 1m Air outlet side 1 5m 1m Micropho...

Page 49: ...y and Temperature Distributions Reference Data Indoor Units 47 7 Air Velocity and Temperature Distributions Reference Data Model 42QZL018R8S 42QZL024R8S Ceiling installation Discharge angle 17 Dischar...

Page 50: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 48 Floor installation Discharge angle 17 Discharge angle 50...

Page 51: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 49 Model 42QZL036R8S Ceiling installation Discharge angle 17 Discharge angle 50...

Page 52: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 50 Floor installation Discharge angle 17 Discharge angle 50...

Page 53: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 51 Model 42QZL048R8S 42QZL060R8S Ceiling installation Discharge angle 17 Discharge angle 50...

Page 54: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 52 Floor installation Discharge angle 17 Discharge angle 50...

Page 55: ...nstallation manual 1 7 Remote controller manual 1 9 The Specification of Power Model Btu h 18000 24000 36000 36000 48000 60000 POWER Phase 1 phase 1 phase 3 phase 3 phase Frequency and Voltage 220 240...

Page 56: ...Field Wiring Indoor Units 54 10 Field Wiring 42QZL018R8S 42QZL024R8S 42QZL036R8S 42QZL048R8S 42QZL060R8S...

Page 57: ...Outdoor Units Outdoor Units 55 Part 3 Outdoor Units 1 Dimensions 56 2 Service Space 58 3 Wiring Diagrams 59 4 Piping Diagrams 64 5 Electric Characteristics 65 6 Operation Limits 66 7 Sound Levels 67...

Page 58: ...ons Outdoor Units 56 1 Dimensions Model Unit mm W D H W1 A B 38QUS018R8S 800 333 554 870 514 340 38QUS024R8S 845 363 702 914 540 350 38QUS036R8S 946 410 810 1030 673 403 38QUS036R8T 946 410 810 1030 6...

Page 59: ...Dimensions Outdoor Units 57 Model Unit mm W D H W1 A B 38QUS048R8T 952 415 1333 1045 634 404 38QUS060R8T 952 415 1333 1045 634 404...

Page 60: ...Service Space Outdoor Units 58 2 Service Space More than 60cm More than 30cm More than 60cm More than 200cm Air inlet Air inlet More than 30cm Air outlet Wall or obstacle Maintain channel...

Page 61: ...Wiring Diagrams Outdoor Units 59 3 Wiring Diagrams 38QUS018R8S...

Page 62: ...Wiring Diagrams Outdoor Units 60 38QUS024R8S...

Page 63: ...Wiring Diagrams Outdoor Units 61 38QUS036R8S...

Page 64: ...Wiring Diagrams Outdoor Units 62 38QUS036R8T...

Page 65: ...Wiring Diagrams Outdoor Units 63 38QUS048R8T 38QUS060R8T...

Page 66: ...e Accumulator Electronic expansion valve CAPILIARY TUBE For 38QUS024R8S there is no accumulator 38QUS036R8S 38QUS036R8T 38QUS048R8T 38QUS060R8T LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHA...

Page 67: ...t Power Supply Hz Voltage Min Max MFA 38QUS018R8S 50 220 240V 198V 254V 20 38QUS024R8S 50 220 240V 198V 254V 20 38QUS036R8S 50 220 240V 198V 254V 30 38QUS036R8T 50 380 415V 342V 440V 20 38QUS048R8T 50...

Page 68: ...used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air con...

Page 69: ...7 Sound Levels Note H 0 5 height of outdoor unit Model Noise Power dB A Noise level dB A 38QUS018R8S 65 57 38QUS024R8S 67 61 38QUS036R8S 69 64 38QUS036R8T 69 64 38QUS048R8T 75 66 38QUS060R8T 77 66 H...

Page 70: ...or unit installation 71 4 Outdoor unit installation Side Discharge Unit 81 5 Refrigerant pipe installation 82 6 Drainage pipe installation 86 7 Vacuum Drying and Leakage Checking 90 8 Additional refri...

Page 71: ...Wiring connection and electric safety checking Test operation Refrigerant pipe installation and insulation Drainage pipe installation and insulation Indoor unit installation location selection Outdoor...

Page 72: ...n The place shall easily support the outdoor unit s weight Locate the outdoor unit as close to indoor unit as possible The piping length and height drop can not exceed the allowable value The place wh...

Page 73: ...for indoor unit Model A H 18 205 235 24 36 245 275 48 55 287 317 3 1 2 Bolt pitch 3 1 3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed...

Page 74: ...leveling instrument to make sure the levelness of the main body is within 1 Adjust the position to ensure the gaps between the body and the four sides of ceiling are even The body s lower part should...

Page 75: ...the panel to the hooks on the mainbody If the panel is with auto lift grille please watch the ropes lifing the grille DO NOT make the ropes enwinded or blocked Tighten the screws under the panel hook...

Page 76: ...in grill to the panel then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively Install the 4 corner covers back Note The...

Page 77: ...ce space for indoor unit 3 2 2 Bolt pitch Ceiling installation Capacity KBtu h D E 18 24 983 220 36 60 1565 220 Wall mounted installation 3 2 3 Install the pendant bolt Ceiling installation Select the...

Page 78: ...ible hooks fittings Wall mounted installation Install the tapping screws onto the wall Refer to picture below 3 2 4 Install the main body Ceiling installation The only installation method for the unit...

Page 79: ...Put the side panels and grilles back Wall mounted installation Hang the indoor unit by insert the tapping screws into the hanging arms on the main unit The bottom of body can touch with floor or suspe...

Page 80: ...he ceiling Be sure to mark the areas where ceiling hook holes will be drilled 2 Install and fit pipes and wires after you have finished installing the main body When choosing where to start determine...

Page 81: ...ert suspension bolts into the unit s hanging holes Fasten them using the washers and nuts provided 9 Mount the indoor unit onto the hanging screw bolts with a block Position the indoor unit flat using...

Page 82: ...sate An internal duct underlayer can be added to reduce noise if the end user requires 3 8 5 Adjust the air inlet direction From rear side to under side Take off ventilation panel and flange cut off t...

Page 83: ...en lifting it with a sling Never hold the inlet of the outdoor unit to prevent it from deforming Do not touch the fan with hands or other objects Do not lean it more than 45 and do not lay it sidelong...

Page 84: ...Btu h 30m 20m 24 000Btu h 30 000Btu h 50m 25m 36 000Btu h 60 000Btu h 65m 30m 5 2 The procedure of connecting pipes 5 2 1 Choose the pipe size according to the specification table 5 2 2 Confirm the cr...

Page 85: ...pipe and fix it by supporter For horizontal refrigerant pipe the distance between supporters should not be exceed 1m For vertical refrigerant pipe the distance between supporters should not be exceed...

Page 86: ...18K 18K 30m L L1 L2 24K 24K 50m 30K 30K 50m Max branch pipe length 15m L1 L2 Max branch pipe length difference 10m L1 L2 Drop Height Max height difference between indoor unit and outdoor unit 20m H1 M...

Page 87: ...Refrigerant pipe installation Installation 85...

Page 88: ...er flowrate is decided by the capacity of indoor unit Relationship between water flowrate and capacity of indoor unit Capacity x1000Btu Water flowrate l h 12 2 4 18 4 24 6 30 7 36 8 42 10 48 12 60 14...

Page 89: ...g distance Gas bag 6 2 5 The horizontal pipe layout should avoid converse flow or bad flow Drainage pipe Water flow Drainage pipe Drainage pipe Drain tee Drain tee Water flow Water flow Water flow Wat...

Page 90: ...h Refer the following picture for installation reference Flexible pipe 300mm Hanger A A Length of horizontal pipe 150mm B Lift height the pump head of water pump Down incline pipe B 6 2 8 Blowhole set...

Page 91: ...t drainage outlet In light of the length of drainage pipe water shall be discharged about 1 minute delayed 2 3 Stop the operation of air conditioner power off the power supply and put the cover of wat...

Page 92: ...Hg after 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...

Page 93: ...d pipe m Note Refrigerant may only be charged after performed the vacuum drying process Always use gloves and glasses to protect your hands and eyes during the charge work Use electronic scale or flui...

Page 94: ...environment place the layer of insulation should be thicker accordingly 9 1 4 Installation highlights of insulation construction Gas pipe and liquid pipe shall be insulated separately if the gas pipe...

Page 95: ...ld wiring construction should be finished by qualified electrician Air conditioning equipment should be grounded according to the local electrical regulations Current leakage protection switch should...

Page 96: ...nits The gas side and liquid side stop values are both opened The air conditioner is pre heated by turning on the power 11 3 Test operation Set the air conditioner under the mode of COOLING by remote...

Page 97: ...Electrical Control System Electrical Control System 95 Part 5 Electrical Control System 1 Electrical Control Function 96 2 Troubleshooting 108 3 Controller 142...

Page 98: ...he louver is immediately active The indoor fan opens 7 seconds later If the unit runs in heating mode the indoor fan is also regulated by the anti cold wind function 1 2 4 Fan Speed Malfunction For A6...

Page 99: ...ault 10 L3 Current limited 11 L5 Voltage limited 12 Target speed cannot be met during the static pressure calculation process For other models If the indoor fan speed is lower than 300 RPM for 50 seco...

Page 100: ...g mode 4 Auto fan When it fan only mode operates the same as auto fan in cooling mode with the temperature set at 24 a b c d T1 24 e H H L 0 75 L H L 0 5 L H L 0 25 L L 1 3 2 Cooling Mode 1 3 2 1 Outd...

Page 101: ...the indoor fan runs continuously and You can select the following speeds high medium low auto or silent When the compressor is running The indoor fan is regulated as illustrated as in the following f...

Page 102: ...imited and decreases to a lower level 4 T2 7 the compressor maintains its current frequency T2 7 the compressor frequency is not limited 1 3 2 4 High Condenser Coil Temperature Protection 18K 24 60K T...

Page 103: ...i cold wind function is preferential When the compressor is running The indoor fan is regulated as illustrated as in the following figure Setting fan speed Actual fan speed H H H H H G M M M M M M Z L...

Page 104: ...e than TCDE1 T3 remains at TCDE2 or above for 80 seconds The machine runs for 10 consecutive minutes in defrosting mode 1 3 3 4 High Evaporator Coil Temperature T2 Protection TEstop T2 Resume Off Decr...

Page 105: ...ediately after the timer off function is set When the setting time is reached the timer LED switches ioff and the unit running mode remains unchanged 1 3 6 7 The timer uses relative time not clock tim...

Page 106: ...Normal display Displays running frequency running state or malfunction code 01 Indoor unit capacity demand code Actual data HP 10 If a capacity demand code is higher than 99 the digital display shows...

Page 107: ...n communicate with outdoor unit General 1 Twins 2 19 Condenser pipe temperature of 1 indoor unit If the temperature is lower than 0 the digital display shows 0 If the temperature is higher than 70 the...

Page 108: ...ncy limit caused by T2 in cooling 2 Frequency limit caused by T2 in heating 3 Preset temperature reached 4 Frequency limit caused by T4 5 Defrosting 6 Mode switching 7 High discharge temperature prote...

Page 109: ...sor overcurrent protection 36 Compressor EE malfunction 37 Compressor start up malfunction 38 311 fan speed has been malfunction 39 Low pressure protection 40 High pressure protection 41 PFC module ma...

Page 110: ...lanation on indoor display board A6 Duct 2 1 3 Auto lifting panel of 4 way cassette 2 1 4 Display board of Ceiling floor indoor unit OPERATION TIMER DEF FAN ALARM Temporary button Operation lamp Timer...

Page 111: ...nits F0 O 1 T4 temperature sensor open or short circuit F1 O 2 T3 temperature sensor open or short circuit F2 O 3 T5 temperature sensor open or short circuit F3 O 4 Outdoor EEPROM malfunction for some...

Page 112: ...nction P0 IPM module protection P1 DC voltage too high too low protection P3 Ultra low ambient temperature protection P4 Compressor rotor position protection J0 Evaporator high temperature protection...

Page 113: ...ons Correct the connections No Yes No Replace the sensor Replace the sensor Replace the indoor PCB Replace the indoor PCB Measure the resistance value of the sensor via Appendix 1 Measure the resistan...

Page 114: ...re code Possible causes Wiring mistakes Faulty water level switch Faulty water pump Faulty indoor PCB Is the water level switch inserted properly Is the water level switch inserted properly No Insert...

Page 115: ...ich fix the fan in place are too tight Find the cause of the problem and resolve it For example the fan may be blocked or the screws which fix the fan in place are too tight Check the wiring of the fa...

Page 116: ...Troubleshooting Electrical Control System 114 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...

Page 117: ...auses T2 sensor error Indoor PCB error Refrigerant system error such as leakage or blockages Is there cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor is well fixed Correct the i...

Page 118: ...tween temperature sensor and PCB Is it properly wired Ensure proper connection No Yes Replace outdoor main PCB Measure the resistance value of the sensor Is it within acceptable parameters Replace the...

Page 119: ...fective F1 Displayed F1 Displayed Up down panel is defective Up down panel is defective Retry Can the panel move up and down normally Retry Can the panel move up and down normally Check the wiring of...

Page 120: ...QE communication wires connection is it wired properly Check the PQE communication wires connection is it wired properly Yes Correct the wire connections Correct the wire connections No One of the 2 i...

Page 121: ...k from EEPROM chip Possible causes Installation mistakes Faulty PCB Yes Replace the outdoor main PCB Replace the outdoor main PCB Power off then restart the unit 2 minutes later Does the malfunction s...

Page 122: ...essor driven chip light Check the signal wire between the compressor driven chip and the compressor Is it connected properly Check the signal wire between the compressor driven chip and the compressor...

Page 123: ...Malfunction Yes Replace the outdoor main PCB Replace the outdoor main PCB Power off then restart the unit 2 minutes later Does a problem still exist Power off then restart the unit 2 minutes later Do...

Page 124: ...l exist Power off then restart the unit 2 minutes later Does a problem still exist No Replace the outdoor main PCB Power on Is the error resolved Replace the outdoor main PCB Power on Is the error res...

Page 125: ...o Yes Yes Remove interference or add magnet ring on power wire Remove interference or add magnet ring on power wire Yes Replace the signal wire Replace the signal wire Yes Pull out and insert back Pul...

Page 126: ...System 124 2 4 4 5 F0 Malfunction Malfunction conditions If the outdoor current exceeds the current limit value the LED displays a failure code Possible causes Wiring mistakes Faulty bridge rectifier...

Page 127: ...bridge rectifier Replace the bridge rectifier No Is the bridge rectifier functioning normally Is the bridge rectifier functioning normally Is the wiring of the reactor or inductance properly wired Is...

Page 128: ...s the wiring of the outdoor ambient temperature sensor T4 not connected properly Is the wiring of the outdoor ambient temperature sensor T4 not connected properly Is the resistance of the outdoor ambi...

Page 129: ...ace the outdoor main PCB Power off then restart the unit 2 minutes later Does a problem still exist Power off then restart the unit 2 minutes later Does a problem still exist Outdoor EEPROM malfunctio...

Page 130: ...s not normal the LED displays P0 and the unit turns off Possible causes Wiring mistakes Faulty IPM board Faulty outdoor fan assemby Compressor malfunction Faulty outdoor PCB First test the resistance...

Page 131: ...iring Reconnect the wiring No Are the reactor or inductance normal Are the reactor or inductance normal Yes Replace reactor or inductance Replace reactor or inductance No Is the connecting wire betwee...

Page 132: ...voltage between L and N is normal Measure whether the voltage between L and N is normal Yes Measure whether input voltage of bridge rectifier is normal Measure whether input voltage of bridge rectifie...

Page 133: ...working order Have T2 and T2B been reversed Is the connection between T2 and The PCB is in working order Have T2 and T2B been reversed Is the resistance of T2 normal according to Appendix 1 Is the re...

Page 134: ...g properly Yes Ensure that the outdoor unit ventilate is functioning properly Ensure that the outdoor unit ventilate is functioning properly Is the heat exchanger dirty Is the heat exchanger dirty No...

Page 135: ...ing diagrams Are the compressor discharge temperature sensor and PCB connected properly according to the wiring diagrams Measure the resistance value of compressor discharge temp sensor If the value i...

Page 136: ...ween main board and the PFC module is connected tightly Check whether the connecting line between main board and the PFC module is connected tightly Yes Measure whether the voltage between P and N is...

Page 137: ...onnected properly Check the signal wire between the Compressor driven chip and the main board is it connected properly Reconnect and retry Is the error still displayed Reconnect and retry Is the error...

Page 138: ...essure protector broken Is the outdoor ambient temperature is higher than 50 Is the outdoor ambient temperature is higher than 50 No Stop the unit Stop the unit Yes Check if the outdoor unit ventilati...

Page 139: ...blem still exist No Replace low pressure protector Replace low pressure protector No Is the low pressure protector broken Is the low pressure protector broken Is the outdoor ambient temperature too lo...

Page 140: ...re whether the voltage between L and N is normal Measure whether the voltage between L and N is normal Yes Measure whether input voltage of bridge rectifier is normal Measure whether input voltage of...

Page 141: ...6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0...

Page 142: ...2 489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29...

Page 143: ...1 Appendix 3 Normal voltage of P and N 208 240V 1 phase 3 phase 380 415V 3 phase In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC module With fully a...

Page 144: ...er off function is active Then every press the time increase 0 5h after 10h 1h increasement after each press If cancel this function just set it to 0 0 4 Follow me button When under cool heat and auto...

Page 145: ...t to cancel the LOCK mode Name and function of LCD on the wire controller 1 Operation mode indication When press MODE button the following mode can be selected in circle Auto Cool Dry Heat Fan only Au...

Page 146: ...stallation Notice When the air conditioner needs the constant frequency wire controller be sure adding a wire joint with 5 terminal named A B C D E in indoor unit and fixing an infrared emitter whose...

Page 147: ...Controller Electrical Control System 145 3 2 2 KJR 120C1 BTF E Name and functions of buttons on the wire controller...

Page 148: ...ress stop swing Match to some model with swing function 7 Follow me button When under cool heat and auto mode press this button follow me function is active Press again this function is ineffective 8...

Page 149: ...D on the wire controller Installation 1 Connect the female joint of wires group from the mainboard with the male joint of connective wires group 2 Please connect the other side of connective wires gro...

Page 150: ...2 places and remove the upper part of the wire controller 4 Fasten the back plate of the wire controller 4 4 For exposed mounting fasten the back plate on the wall with the 3 screws M4 20 and plugs 4...

Page 151: ...f installationsite 4 7 Please set the time corrected on the first time operation Batteries in the wire controller can timing under power failure which ensure the time keep right When the power restore...

Page 152: ...kle the upper case avoid clamping the wiring during installation 3 2 3 Two wired non polarity wired controller KJR 120G Optional 1 Connection For Cassette The wired controller connects to main control...

Page 153: ...ery air conditioner in network has only one network address to distinguish each other Address code of air conditioner in LAN is set by code switch ENC1 Duct and Ceiling Floor or ADSS Cassette of the i...

Search results

Summary of Contents for 38QUS012D8S

Reviews:

Related manuals for 38QUS012D8S

Brands by name

Popular brands

Carrier 38QUS012D8S, Service Manual

Search results

Summary of Contents for 38QUS012D8S

Reviews:

Related manuals for 38QUS012D8S

Brands by name

Popular brands