Carrier 38QUS014D8S2 Series Service Manual Download

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SUPER INVERTER SERIES

MULTI TYPE

Service Manual 2018

Summary of Contents for 38QUS014D8S2 Series

Page 1: ...SUPER INVERTER SERIES MULTI TYPE Service Manual 2018...

Page 2: ...mperature range 1 8 Electronic function 2 9 General information of Outdoor Units 12 10 Features 13 11 Dimensions 14 12 Refrigeration Cycle Diagram 15 13 Sound Levels 17 14 Installation Details 18 15 E...

Page 3: ...ir conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window i...

Page 4: ...oods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow Use a soft cloth to c...

Page 5: ...shall be displayed 7 Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work A degree of ventilation shall c...

Page 6: ...eak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants Electronic leak detectors shall be used to detect flammable refrigerants...

Page 7: ...porarily j When the cylinders have been filled correctly and the process completed make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipme...

Page 8: ...tion process shall be carried out prior to returning the compressor to the suppliers Only electric heating to the compressor body shall be employed to accelerate this process When oil is drained from...

Page 9: ...1...

Page 10: ...2 2 General information of Indoor Units Four way cassette compact Console A6 Ducted 15C ODU 38QUS018D8S2 38QUS036D8S4 38QUS027D8S3 38QUS042D8S5...

Page 11: ...t damage the decoration The panel size is 647 50 647mm The hooks are designed in the four corners of the body which can save installation space Electric control box built in design The E box is simply...

Page 12: ...4 Air passage function Reserves the space for air outlet from the side of indoor unit It s availed to connect air duct from the two sides to the nearby small rooms Dimension 75mm Fresh Air...

Page 13: ...o tight roof spaces 2 2 3 Constant air volume control For ordinary duct when the static pressure exceeds the expected range it is fairly difficult even for an experienced installer to calculate and ad...

Page 14: ...and bottom is the same It s very easy to switch to match different application 2 2 6 Communication wire connection A6 duct uses two wires without polarity connection way which almost has no mistake d...

Page 15: ...ide With a larger window design once the motor and the blower wheels have been detached heat exchanger and water receiver tray in behind can be seen very clearly Dusted can be easily removed from the...

Page 16: ...thy and comfortable A ventilation motor provided by the installer can be installed inside the fresh air duct to improve the fresh air volume There are reserved ports for this motor on main PCB Standar...

Page 17: ...ompact unit body space saving this unit body is very thin and harmonious with room It is beautiful elegant and space saving light weight and compact 4 Flexible installation can be used for floor stand...

Page 18: ...room and increase the air flow coverage Low noise operation lowest to 23Db Low starting power and precise room temperature adjustment 7 Powerful mode can be selected for rapid cooling or heating 8 Ea...

Page 19: ...anel E parts box Gas side Liquid side 4 install hanger Body Wiring connection port Drain pipe 32 Fresh air intake 65 570 545 570 523 260 647 647 50 150 Distribution duct 170 2 2 4 Screw hole for insta...

Page 20: ...cted Model KBtu h unit A B C D E F G H I J K L M H1 H2 W1 W2 9 12 mm 700 200 506 450 137 537 30 152 599 186 50 741 360 84 140 84 84 inch 27 6 7 9 19 9 17 7 5 4 21 1 1 2 6 0 23 6 7 3 2 0 29 2 14 2 3 3...

Page 21: ...13 3 3 Console 16 Drain pipe 195 Hanging arm 700 600 210...

Page 22: ...14 3 4 Hi wall 3 7 1 Indoor Unit Model KBtu h W D H 42QHC007D8S 42QHC009D8S 730 192 291 42QHC012D8S 812 192 300 42QHC018D8S 973 218 319 42QHC024D8S 1082 225 338...

Page 23: ...e Space unit mm 4 1 Four way cassette compact 4 2 Ducted Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size a...

Page 24: ...16 4 3 Console 4 4 Hi wall...

Page 25: ...17 5 Wiring diagram 38QUS018D8S2...

Page 26: ...18 Note S 1 S 2 are used in other type of models They don t need to be connected in multi models 38QUS027D8S3...

Page 27: ...19 38QUS036D8S4 38QUS042D8S5...

Page 28: ...20 42QHC007D8S 42QHC009D8S 42QHC012D8S 42QHC018D8S 42QHC024D8S 16022000A83297 42QTD009D8S 42QTD012D8S 42QTD018D8S...

Page 29: ...21 42QSS009D8S 42QSS012D8S 42QZA012D8S...

Page 30: ...7 12 12 7 only is Hi wall 6 3 Indoor unit combination for 38QUS036D8S4 38QUS036D8S4 One unit Two unit Three unit Four unit 7 7 7 9 9 12 18 7 7 7 7 9 9 7 12 18 9 9 18 9 18 18 7 7 7 7 7 7 9 12 7 9 9 18...

Page 31: ...9 9 7 7 12 18 7 9 9 18 7 9 18 18 9 9 9 18 9 12 12 12 7 7 7 9 7 7 9 12 7 7 12 24 7 9 9 24 7 12 12 12 9 9 9 24 9 12 12 18 7 7 7 12 7 7 9 18 7 7 18 18 7 9 12 12 7 12 12 18 9 9 12 12 12 12 12 12 7 7 7 18...

Page 32: ...in 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 conditioner operates beyond this figure th...

Page 33: ...outdoor unit T3 Coil temperature of outdoor heat exchanger T4 Outdoor ambient temperature T5 Compressor discharge temperature Ts Setting temperature 8 2 Icon explanation on indoor display board 8 2 1...

Page 34: ...or console When indoor fan speed keeps too low 300RPM for certain time the unit will stop and the LED will display the failure For other models When indoor fan speed keeps too low lower than 300 RPM f...

Page 35: ...nly mode acts as follow For all models a b c d T1 24 e H H L 0 75 L H L 0 5 L H L 0 25 L L 8 4 2 Cooling mode 8 4 2 1 Outdoor fan running rules T4 A A B C D E F G H I While A B C means different fan s...

Page 36: ...ll T2 8 8 4 3 Dry mode 8 4 3 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as in cooling mode 8 4 3 2 Low indoor room temperature protection In drying mode if...

Page 37: ...tual fan speed H H H H H G M M M M M M Z L L L L L L D H H H G M M M Z L L L D T1 Td L H M If the compressor stops caused by the room temperature rising the indoor fan will be forced to run 127 second...

Page 38: ...urn to normal heating mode T3 rises to be higher than TCDE1 T3 keeps to be higher than TCDE2 for 80 seconds The machine has run for 10 minutes in defrosting mode Defrosting action 4 Way valve Indoor f...

Page 39: ...or unit running in forced cooling it is the master forced cooling unit Other indoor units will run at forced cooling mode too and they will be the slave forced cooling units The slave forced cooling u...

Page 40: ...s equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The uni...

Page 41: ...rding to the room temperature detected from its own room temperature sensor and setting temperature 5 When the indoor PCB receives the follow me signal from wired remote controller the control is the...

Page 42: ...11...

Page 43: ...nformation of Outdoor Units Model name Dimension mm Compressor 38QUS018D8S2 800x333x554 KSM135D23UFZ 38QUS027D8S3 845x363x702 KTF235D22UMT 38QUS036D8S4 946x410x810 KTF310D43UMT 38QUS042D8S5 946x410x81...

Page 44: ...e valves and prevents water from dripping 4 way valve control It is only operated in the heating operation mode except defrosting operation Outdoor unit Power relay control Hydrophilic aluminum fin An...

Page 45: ...14 11 Dimensions Model Unit mm W D H W1 A B 38QUS018D8S2 800 333 554 860 514 340 38QUS027D8S3 845 363 702 923 540 350 38QUS036D8S4 946 410 810 1034 673 403 38QUS042D8S5 946 410 810 1034 673 403...

Page 46: ...APILLARY B LIQUID VALVE B GAS VALVE B Accumulator T2B A Evaporator temp sensor outlet T2B B 12 2 Refrigeration circuit drawing of inverter 1 drive 3 type LIQUID VALVE A GAS VALVE A HEAT EXCHANGE EVAPO...

Page 47: ...h Low pressure switch T2B A Evaporator temp sensor outlet T2B B T2B C T2B D 12 4 Refrigeration circuit drawing of inverter 1 drive 5 type LIQUID VALVE A GAS VALVE A HEAT EXCHANGE EVAPORATOR HEAT EXCHA...

Page 48: ...17 13 Sound Levels H 1 0m Outdoor Unit Microphone Note H 0 5 height of outdoor unit Model Noise Power dB A Noise level dB A 38QUS018D8S2 65 57 38QUS027D8S3 68 60 38QUS036D8S4 70 64 38QUS042D8S5 73 64...

Page 49: ...on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 14 1 3 Pipe length and the elevation Maximum piping length and height difference 1 drive 2 1 driv...

Page 50: ...uid 6 35 1 4 5 Gas 9 52 3 8 4 12 7 1 2 1 14 1 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating curr...

Page 51: ...lease check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5...

Page 52: ...harge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the...

Page 53: ...e careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the char...

Page 54: ...ervice port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to...

Page 55: ...position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set...

Page 56: ...ow side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately...

Page 57: ...splay function In standby the LED displays In compressor operation the LED display the running frequency In defrosting mode The LED displays dF or alternative displays between running frequency and dF...

Page 58: ...e frequency after the frequency limit 16 The frequency sending to compressor control chip 17 Indoor unit A evaporator outlet temperature T2BA If the temperature is lower than 9 the digital display sho...

Page 59: ...by T4 T3 or the current Bit6 Frequency limit caused by PFC Bit5 Frequency limit caused by T4 Bit4 Frequency limit caused by T2 Bit3 Frequency limit caused by T3 Bit2 Frequency limit caused by T5 Bit1...

Page 60: ...Temperature interval of current limit is same as range of T4 limited frequency Cooling mode T4 CoolZone5 CoolZone4 CoolZone3 CoolZone2 CoolZone1 Heating mode T4 HeatZone4 HeatZone3 HeatZone2 HeatZone...

Page 61: ...rise the frequency to setting frequency for setting time and then resume to former frequency 2 The EXV will keep 300p while the indoor units will keep the current running mode If the outdoor ambient...

Page 62: ...module malfunction P0 1 Over voltage or over low voltage protection P1 2 Too low ambient temperature protection P3 4 Inverter compressor drive protection P4 5 Mode conflict 6 Low pressure protection...

Page 63: ...pen or short circuit of T3 temperature sensor F2 O 3 Open or short circuit of T5 temperature sensor F3 O 4 Outdoor EEPROM malfunction For some units F4 O 5 Outdoor fan speed is out of control F5 O 6 O...

Page 64: ...of sensor is defective F3 No C Indoor unit coil outlet temperature sensor or connector of sensor is defective F4 No D Indoor unit coil outlet temperature sensor or connector of sensor is defective F5...

Page 65: ...it 16 3 1 1 Indoor EEPROM malfunction Yes Replace the indoor main PCB Power off then restart the unit 2 minutes later EEPROM An electrically erasable programmable read only memory whose contents can b...

Page 66: ...remote controller Is all indoor unit display Turn off the all indoor units Is IPM power LED or operating LED lamp On Refer PIC2 Yes A Is all the wiring between terminal and Indoor PCB connect ok No Y...

Page 67: ...IPM or outdoor main PCB Self Check Power Operating Self Check Operating els Pic 2 IPM or outdoor main PCB Pic 1 check the voltage of N to S Vs is it moving alternately between positive value and negat...

Page 68: ...37 PIC3 Main board LED when power on and unit standby PIC 4 check point button Press 1 time for check how many indoor units are connected...

Page 69: ...eck the wiring of fan motor Are all the connections good No Yes No Correct the connections Correct the connections No Replace the fan motor Replace the fan motor Yes Yes Replace the main PCB Replace t...

Page 70: ...type NO Color Signal Voltage 1 Red Vs Vm 280V 380V 2 3 Black GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V For other types NO Color Signal Voltage 1 Red Vs Vm 192V 380V 2 3 Black...

Page 71: ...ormal Yes 18 3 1 5 Full water malfunction If the water level switch is inserted well If the water level switch is inserted well No Insert the water level switch well Insert the water level switch well...

Page 72: ...nel is defective F1 Displayed F1 Displayed Up down panel is defective Up down panel is defective Retry if panel can up and down normally Retry if panel can up and down normally Check the wiring of lef...

Page 73: ...lace the outdoor main PCB Replace the outdoor main PCB Power off then restart the unit 2 minutes later Power off then restart the unit 2 minutes later EEPROM An electrically erasable programmable read...

Page 74: ...IPM board light Check the signal wire between the IPM board and the main board is it connected good Reconnect and retry Is error still display Replace IPM board and then check whether the system can r...

Page 75: ...240VAC Check the power supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V for 36 42KBtu h Replace bridge rectifiers and then check whether the system...

Page 76: ...the fan are tighten Check the wiring of fan motor Are all the connections good Check the wiring of fan motor Are all the connections good No Yes No Correct the connections Correct the connections No R...

Page 77: ...mbient temperature is higher than 50 Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Stop the unit Yes Check if the outdoor unit ventilation is good Check if the outdo...

Page 78: ...ure protector is broken Whether the low pressure protector is broken Check whether the outdoor ambient temperature is too low Check whether the outdoor ambient temperature is too low No Stop the unit...

Page 79: ...temperature is higher than 50 No Stop the unit Yes Judge 3 Check whether the outdoor unit is bad ventilation No Make the outdoor unit ventilate well Yes Judge 5 The refrigerant pipe is blocked No Let...

Page 80: ...ring diagrams Measure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix 2 Measure the resistance value of compressor discharge temp se...

Page 81: ...door unit ventilation is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Chec...

Page 82: ...sor check whether the system can work normally Check whether the lines in E part box are connected tightly Yes Connect it tightly check ok or not No No Yes No Replace the bridge rectifiers Check wheth...

Page 83: ...K 18K 24K Cassette Ducted Indoor fan motor ZKFP 124 8 2 ZKFN 160 8 1 2 Outdoor unit Model 1x2 14k 1x2 18k 1x3 21K 1x3 27K Compressor ASN108D22UEZ ASM135D23UFZ ASM135D23UFZ ATF235D22UMT Outdoor fan mot...

Page 84: ...measure the resistance value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 s...

Page 85: ...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 35982 1 33...

Page 86: ...9 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 15 80...

Page 87: ...Compressor checking Measure the resistance value of each winding by using the tester Position Resistance Value ASN108D22UEZ ASM135D23UFZ ATF235D22UMT ATF310D43UMT Blue Red 1 57 20 1 75 20 0 75 20 0 6...

Page 88: ...lytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Digital tester Normal resi...

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