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Samsung AC018JNHDCH/AA Service Manual

Manual is about: Samsung AC018JNHDCH/AA; AC018JXADCH/AA; AC024JNHDCH/AA; AC024JXADCH/AA; AC030JNHDCH/AA; AC030JXADCH/AA; AC036JNHDCH/AA; AC036JXADCH/AA; AC042JNHDCH/AA; AC042JXADCH/AA; AC048JNHDCH/AA; AC048JXADCH/AA SYSTEM AIR CONDITIONERS

Summary of AC018JNHDCH/AA

  • Page 1

    Air conditioner contents system air conditioner 1. Precautions 2. Product specifi cations 3. Disassembly and reassembly 4. Troubleshooting 5. Pcb diagram 6. Wiring diagram 7. Reference sheet ac030jnhdch/aa ac036jnhdch/aa ac042jnhdch/aa ac048jnhdch/aa ma duct series indoor unit outdoor unit model : a...

  • Page 2: Contents

    Contents 1 1. Precautions ........................................................................................................................................ 1-1 1-1 precautions for the service ........................................................................................................

  • Page 3: 1. Precautions

    Samsung electronics 1-1 1. Precautions 1-1 precautions for the service o use the standard parts when replacing the electric parts. – confirm the model name, rated voltage, rated current of the electric parts. O repair the disconnection of harness securely when repairing the break down. – if there is...

  • Page 4: 2. Product Specifications

    Samsung electronics 2. Product specifications 2-1 the feature of product ■ built-in duct type after installed, the air conditioner can be harmonized with a room interior. ■ high performance & energy saving with the advanced bldc inverter technology, it makes a room cool with highly energy saving and...

  • Page 5

    Samsung electronics 2-2 product specifications 2-2 item ac018jnhdch ac018jxadch ac024jn4dch ac024jxadch image indoor unit outdoor unit remote controller power product 1Φ, 208-230v/60hz 1Φ, 208-230v/60hz indoor l x h x d mm 1150*320*480 1150*320*480 outdoor l x h x d mm 880*638*310 940*998*330 indoor...

  • Page 6

    Samsung electronics 2-3 item ac030jnhdch ac030jxadch ac036jnhdch ac036jxadch image indoor unit outdoor unit remote controller power product 1Φ, 208-230v/60hz 1Φ, 208-230v/60hz indoor l x h x d mm 1200*360*650 1200*360*650 outdoor l x h x d mm 940*998*330 940*1210*330 indoor product kg(net) 58.0 58.0...

  • Page 7

    Samsung electronics 2-3 2-4 item ac042jnhdch ac042jxadch ac048jnhdch ac048jxadch image indoor unit outdoor unit remote controller power product 1Φ, 208-230v/60hz 1Φ, 208-230v/60hz indoor l x h x d mm 1200*360*650 1200*360*650 outdoor l x h x d mm 940*1210*330 940*1210*330 indoor product kg(net) 58.0...

  • Page 8

    2-4 samsung electronics item descriptions code-no. Q'ty remark installation&owner's manual db68-05395a 1 essential offer (indoor unit) insulation db62-04318s 1 insu drain hose db62-11028a 1/1/1 insu hose d db62-11028e 1/1 insu tube out db62-11028f 1/1 assy drain hose joint db67-01191a 1 ass'y drain ...

  • Page 9

    Samsung electronics 3-1 3. Disassembly and reassembly ■ necessary tools disassemble should be worked in pairs. Item remarks +screw driver adjustable wrench (8mm, 10mm, 13mm) m6, m8 hex wrench.

  • Page 10

    3-2 samsung electronics ■ ac018jnhdch / ac024jnhdch no parts procedure remark 1 assy fan parts 1)disassemble the cabinet-blower -unscrew 19 screws 2)disassemble the partition-front from partition - unscrew 8 screws 3)rotate the assy fan parts in ccw direction. 4)pull out the assy fan parts after han...

  • Page 11

    Samsung electronics 3-3 no parts procedure remark 2 drain pan 1)disassemble the cabinet-drain -unscrew 7 screws 2)disassemble the drain pan - unscrew 4 screws. 3 drain pump 1)disassemble the drain pump kit from the set. - unscrew 2 screws 2)disassemble the drian pump case. - unscrew 4 screws..

  • Page 12

    3-4 samsung electronics no parts procedure remark 3 drain pump 3)disassemble the drian pump. - unscrew 2 screws and cabel tie. 4 evaporator 1)disassemble the cover-pipe -unscrew 5 screws 2)disassemble the evaporator -unscrew 4 screws.

  • Page 13

    Samsung electronics 3-5 no parts procedure remark 5 main pba 1)disassemble the case control -unscrew 3 screws 2)disassemble the evaporator -unscrew 4 screws.

  • Page 14

    3-6 samsung electronics no parts procedure remark 1 drain pan 1)disassemble the cabinet-blower -unscrew 17 screws 2)disassemble the cabinet-drain -unscrew 9 screws 3)disassemble the drain pan -unscrew 4 screws 2 assy fan parts 1)disassemle the case blower from partition. - unscrew 10 bolts by using ...

  • Page 15

    Samsung electronics 3-7 no parts procedure remark 2 assy fan parts 2)ratate the assy fan parts in ccw direction 3)pull out the assy fan parts after hang at the edge of cabinet 3 drain pump 1)disassemble the drain pump kit from the set. - unscrew 2 screws 2)disassemble the drian pump case. - unscrew ...

  • Page 16

    3-8 samsung electronics no parts procedure remark 3 drain pump 3)disassemble the drian pump. - unscrew 2 screws and cabel tie. 4 evaporator 1)disassemble the evaporator - unscrew 4 screws.

  • Page 17

    Samsung electronics 3-9 no parts procedure remark 5 main pba 1)disassemble the case control -unscrew 3 screws 2)detach all connect cable 3)disassemble the pba -unscrew 1 screw.

  • Page 18

    3-10 samsung electronics no parts procedure remark 1 common work 1) loosen 1 pcs screw of cover control,and detach it. 2) loosen 5 pcs screws on both right and left cabniet side edges and to detach the cover-top 3) loosen 7 screwsfixed to disassemble cabi-front , and detach it. Qac018jxadch 3-2 outd...

  • Page 19

    Samsung electronics 3-11 no parts procedure remark common work 4) loosen 7 screws to disassemble the cabi- right ,and detach it. 5) loosen 2 screws to disassemble steel-bar. 6) loosen 3 screws to disassemble cabi-left..

  • Page 20

    3-12 samsung electronics no parts procedure remark 2 fan&motor 1) loosen 1 screw as indication and detached the fan. 2) loosen 4 pcs motor screws and disconnect the wire betwwen assy control out and motor. 3) loosen 2 pcs bracket-motor screw and detach it..

  • Page 21

    Samsung electronics 3-13 no parts procedure remark 3 assy control out 1) lossen fixing 1 screw from cover -control 2) detach several connections from assy con- trol out, take out assy control out. 4 heat exchanger 1) release the refrigerant at first 2) looosen fixing screw on both side. 3) disaessem...

  • Page 22

    3-14 samsung electronics no parts procedure remark 5 compressor 1) disconnect the compressor lead wire . 2)disassembly the felt comp sound. Loosen the 3 bolts at the bottom of.

  • Page 23

    Samsung electronics 3-15 no parts procedure remark 1 cabi front rh you must turn off the power before disassembly. 1) unscrew and remove two mounting screw in the cabinet front rh. (use +screw driver) 2 cabi top 1) unscrew and remove 9 screws on each side of the cabinet-top. (use +screw driver) 3 ca...

  • Page 24

    3-16 samsung electronics no parts procedure remark 4 guard cond 1) pull the sensor from guard cond. 2) unscrew and remove 4 screws in the guard cond. (use +screw driver) 5 cabi back rh 1) pull the sensor from cabi back rh. 2) unscrew and remove 4 screws on each side of the cabinet back rh. (use +scr...

  • Page 25

    Samsung electronics 3-17 no parts procedure remark 6 cabi install back 1) unscrew and remove 1 screw in the cabinet-install back. (use +screw driver) 7 cabi front lf 1) unscrew and remove 10 screws in the cabinet-front lf. (use +screw driver).

  • Page 26

    3-18 samsung electronics no parts procedure remark 8 fan 1) turn 2 mounting nuts as shown in the picture and remove it. (use adjustable wrench).

  • Page 27

    Samsung electronics 3-19 no parts procedure remark 9 motor 1) separate the fan propeller. 2) unscrew and remove the 8 motor mounting screws. (use +screw driver) 3) disconnect the motor wire from ass'y control out. 10 bracket motor 1) unscrew and remove 2 mounting screws in bracket motor. (use +screw...

  • Page 28

    3-20 samsung electronics no parts procedure remark 11 control out 1) disconnect 4 connecters from ass'y control out. 2) unscrew and remove 1 mounting screw in control out. (use +screw driver) 3) separate ass'y control out..

  • Page 29

    Samsung electronics 3-21 no parts procedure remark 12 ass'y 4way valve 1) purge the coolant first. 2) unscrew and remove 2mounting screws in muffler. 3) unscrew and remove 2 mounting screws in service valve. (use +screw driver) 4) separate the pipe from the entrance/exit using a welder. When removin...

  • Page 30

    3-22 samsung electronics no parts procedure remark 13 ass;y eev valve 1) unscrew and remove 2 mounting screws in service valve. (use +screw driver) 2) separate the pipe from the entrance/exit using a welder. 14 compressor 1) unscrew and remove 1 mounting nut in cover terminal. (use adjustable wrench...

  • Page 31

    Samsung electronics 3-23 no parts procedure remark 3) as shown in the picture, unscrew and remove 3 mounting screws from the bottom. (use adjustable wrench) 15 cond out 1) unscrew and remove 3 screws on each side of the assy cond out. (use +screw driver) 2) separate the compressor felt sound..

  • Page 32

    3-24 samsung electronics no parts procedure remark 1 cabi front rh you must turn off the power before disassembly. 1) unscrew and remove two mounting screw in the cabinet front rh. (use +screw driver) 2 cabi top 1) unscrew and remove 9 screws on each side of the cabinet-top. (use +screw driver) 3 ca...

  • Page 33

    Samsung electronics 3-25 no parts procedure remark 5 cabi back rh 1) pull the sensor from cabi back rh. 2) unscrew and remove 4 screws on each side of the cabinet back rh. (use +screw driver) 6 cabi install back 1) unscrew and remove 1 screw in the cabinet-install back. (use +screw driver) 7 cabi fr...

  • Page 34

    3-26 samsung electronics no parts procedure remark 9 motor 1) separate the fan propeller. 2) unscrew and remove the 8 motor mounting screws. (use +screw driver) 3) disconnect the motor wire from ass'y control out. 10 bracket motor 1) unscrew and remove 2 mounting screws in bracket motor. (use +screw...

  • Page 35

    Samsung electronics 3-27 no parts procedure remark 12 assy 4way valve 1) purge the coolant first. 2) unscrew and remove 2 mounting screws in service valve. (use +screw driver) 3) separate the pipe from the entrance/exit using a welder. When removing the compres- sor, heat exchanger, and pipe, purge ...

  • Page 36: 4. Troubleshooting

    Samsung electronics 4-1 4. Troubleshooting 4-1 indoor display error and check method ■ error detection and reoperation ● if error occurs during the operation, badness is indicated by led flickering and all operation is stopped except led. ● when reoperating by remote control and switch determine the...

  • Page 37

    4-2 samsung electronics abnormal conditions indicators remarks concealed type green red standard type communication error between indoor units x x x 1. Error of electronic expansion valve close 2. Error of electronic expansion valve open 3. 2’nd detection of high temperature cond 4. 2’nd detection o...

  • Page 38

    Samsung electronics 4-3 display explanation indoor unit communication error indoor/outdoor unit communication time out error 60 packet over data communication error between outdoor main and inverter micom (occurred after 1 minute detection in main and inverter) indoor unit eva in sensor separation i...

  • Page 39

    4-4 samsung electronics display explanation gas leak detected indoor unit operating stop due to detect unknown error in outdoor unit compressor down due to freeze protection control high pressure sensor breakaway error low pressure sensor breakaway error comp down by compression ratio control error ...

  • Page 40

    Samsung electronics 4-5 indoor unit display x (operation) x (defrost) (timer) x(fan) x (filter) wire remote controller display e121 symptom error of room sensor in the indoor unit(open/short) failure short or leakage of the room sensor 4-2 troubleshooting by symptoms 4-2-1 indoor temperature sensor ...

  • Page 41

    4-6 samsung electronics indoor unit display (operation) x (defrost) (timer) x(fan) x (filter) wire remote controller display e122 symptom error of eva-in,eva-out sensor in the indoor unit(open/short) failure short or leakage of the eva sensor 4-2-2 eva in and out sensor (open/short) yes no no in thi...

  • Page 42

    Samsung electronics 4-7 indoor unit display x (operation) x (defrost) x(timer) (fan) x (filter) wire remote controller display e154 symptom error of fan motor in the indoor unit failure fan error 4-2-3 fan error yes no yes is there foreign substance stuck in the motor fan? Yes is the motor connector...

  • Page 43

    4-8 samsung electronics indoor unit display x (operation) x (defrost) (timer) (fan) (filter) wire remote controller display e198 symptom error of terminal block's terminal fuse(open) failure fuse open 4-2-4 terminal block's terminal fuse(open) no no yes is the resistance 0Ω ? Yes is the wire connect...

  • Page 44

    Samsung electronics 4-9 indoor unit display (operation) x (defrost) x (timer) (fan) (filter) wire remote controller display e422 symptom clogging of outdoor's service valve failure valve clog 4-2-5 outdoor's service valve(clog) no yes is the outdoor service valve clogging? Open the outdoor's service...

  • Page 45

    4-10 samsung electronics indoor unit display x (operation) x (defrost) x (timer) (fan) (filter) wire remote controller display e153 symptom 2nd detection of the float switch failure float switch open 4-2-6 float switch(open) no no yes is the resistance 0Ω ? Yes is the wire connector disconnected fro...

  • Page 46

    Samsung electronics 4-11 indoor unit display (operation) (defrost) (timer) (fan) (filter) wire remote controller display e162 symptom eeprom pcb disconnected from the main pcb failure option error 4-2-7 eeprom error no no yes is the error mode disappear ? Yes is the eeprom pcb disconnected from the ...

  • Page 47

    4-12 samsung electronics indoor unit display (operation) (defrost) (timer) (fan) (filter) wire remote controller display e163 symptom eeprom option setting error failure option error 4-2-8 option error no yes is the error mode disappear ? The indoor unit work normaly replace the pcb and restart the ...

  • Page 48

    Samsung electronics 4-13 4-3 setting option setup method in order to set the indoor unit option code use the wired remote controller and follow the directions below. 1) press the and buttons at the same time for more than 3 seconds and then a main menu will be displayed. 2) press the / button to sel...

  • Page 49

    4-14 samsung electronics 4-4 setting an indoor unit address and installation option t press the button anytime during setup to exit without setting. T address will not be applied if you don't press button. T setting main/rmc address of an indoor unit is available only with a master wired remote cont...

  • Page 50

    Samsung electronics 4-15 setting an indoor unit installation option in order to check and set the indoor unit installation option code use the wired remote controller and follow the directions below. 1) press the and buttons at the same time for more than 3 seconds and then a main menu will be displ...

  • Page 51

    4-16 samsung electronics option no. : 02xxxx-1xxxxx-2xxxxx-3xxxxx option seg1 seg2 seg3 seg4 seg5 seg6 explanation page mode reserved use of external temperature sensor use of central control reserved indication and details indication details indication details indication details indication details ...

  • Page 52

    Samsung electronics 4-17 q option code model ac018jnhdch ac024jnhdch static pressure(inh2o) static pressure(mmaq) option code for indoor unit 0≤p≤0.12 0≤p≤3 01c0ec-1c8424-27343b-370005 01c0ec-1c747c-274750-370005 0.12 3 01c0ec-1c5468-27343b-370005 01c0ec-1c54af-274750-370005 0.20 5 01c0ec-1c54ce-273...

  • Page 53

    4-18 samsung electronics 4-5 items to be checked first 1. The input voltage should be rating voltage ± 10% range. The air conditioner may not operate properly if the voltage is out of this range. 2. Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and t...

  • Page 54: 5. Pcb Diagram and Part List

    Samsung electronics 5-1 5. Pcb diagram and part list ac018jnhdch / ac024jnhdch no part code local function description 1 3711-000179 cn103 drain yw396-02v yel 2 3711-004236 cn413 eva dis/out sensor smw200-06p wht 3 3711-003942 cn140 fuse check smw200-02p wht 4 3711-003407 cn702 comp signal yw396-03a...

  • Page 55

    5-2 samsung electronics ac030jnhdch / ac036jnhdch / ac042jnhdch / ac048jnhdch.

  • Page 56

    Samsung electronics 5-3 ① #1: n #2: l #3: n ② #1: l #2: n ③ #1:fuse check #2:gnd ④ #1: 12v #2 : gnd ⑤ #1: l input #2: l output ⑥ #1 : eva in temp #2,4,6: gnd #3 : eva out temp #5 : discharge temp ⑦ #1: #2: gnd ⑧ #1,3: 12v #2: error check out #4: com chk out ⑨ #1: 12v #2: motor ssr out ⑩ #1: gnd #2: ...

  • Page 57

    5-4 samsung electronics 5-2-1 main pcb q ac018jxadch 5 4 3 2 1 7 6 8 9 10 11 12 5-2 outdoor unit.

  • Page 58

    Samsung electronics 5-5 ① #1-#3 : ac220v ② #1~#28 : signal to sub pcb ③ #1~#2 : olp thermistor ④ #1 : dc12v #2 : rxd #3 : txd #4 : gnd ⑤ #1~#5 : eev signal #6 : dc12v ⑥ #1 : com1(f1) #2 : com2(f2) ⑦ #1~#2 : outdoor thermistor #3~#4 : discharge thermistor #5~#6 : cond thermistor ⑧ #1~#10 : download ⑨...

  • Page 59

    5-6 samsung electronics 5-2-2 sub pcb q ac018jxadch 1 2 ① #1 : dc12v #2 : gnd ② #1~#28 : signal to main pcb cn12 : dc12v cn951 : signal to main pcb.

  • Page 60

    Samsung electronics 5-7 20 19 18 17 16 15 13 14 12 11 10 9 8 7 6 5 1 2 3 4 no part code local function description 1 3711-003404 cn703 base-heater yw396-03av blu 2 3711-003406 cn702 4way-1 yw396-03av yel 3 3711-003407 cn701 hotgas yw396-03av red 4 3711-000203 cn101 power yw396-03av wht 5 3711-002001...

  • Page 61

    5-8 samsung electronics 2 3 4 6 5 8 7 1 qac024jxadch, ac030jxadch, ac036jxadch, ac042jxadch, ac048jxadch 5-2-4 inverter pcb ① #reactor-a2 : wht #reactor-b2 : wht ② #reactor-a2 : blk #reactor-b2 : blk ③ #1 : rxd, #2 : txd #3 : gnd, #4 : dc 5v #5 : dc 12v, #6 : inv. Smps signal ④ #1 : rxd̲ataro, #2 : ...

  • Page 62

    Samsung electronics 5-9 qac024jxadch, ac030jxadch, ac036jxadch, ac042jxadch, ac048jxadch 3 1 2 5-2-5 emi pcb ① l1 : brn ② n1 : sky-blu ③ #1-#3 : ac 220~240v l1-ac power l phase n1-ac power n phase cn01-ac power.

  • Page 63: 6. Wiring Diagram

    Samsung electronics 6-1 6. Wiring diagram qac018jnhdch / ac024jnhdch this document can not be used without samsung’s authorization. 6-1 indoor unit.

  • Page 64

    6-2 samsung electronics this document can not be used without samsung’s authorization. Qac030jnhdch / ac036jnhdch / ac042jnhdch / ac048jnhdch.

  • Page 65

    Samsung electronics 6-3 6-2 outdoor unit this document can not be used without samsung’s authorization. Q ac018jxadch.

  • Page 66

    6-4 samsung electronics qac024jxadch, ac030jxadch, ac036jxadch, ac042jxadch, ac048jxadch.

  • Page 67: 7. Preference Sheet

    Samsung electronics 7-1 7. Preference sheet 7-1 refrigerating cycle diagram indoor unit outdoor unit heat exchanger (evaporator) heat exchanger (condenser) cooling gas leak check point liquid pipe gas pipe compressor accumulator 3-way valve capillary 3-way valve q condenser high temperature and high...

  • Page 68

    7-2 samsung electronics model code 7-2 index for model name 7-2-1 indoor unit ※ "/" can be removed from the buyer card if there are not enough digits. Product type am dvm aj pma ac cac (usd) / asd ae ehs an vtl ak pak (packaged system) ag chr feature s general set (nasa) n indoor unit (nasa) x outdo...

  • Page 69

    Samsung electronics 7-3 model code 7-2-2 outdoor unit ※ ★ mcd: dummy mock-up model ※ “/” can be removed from the buyer card if there are not enough digits. Product type am dvm aj pma ac cac (usd) / asd ae ehs an vtl ak pak (packaged system) ag chr feature s general set (nasa) n indoor unit (nasa) x ...

  • Page 70

    This service manual is a property of samsung electronics co., ltd. Any unauthorized use of manual can be punished under applicable international and/or domestic law. © samsung electronics co., ltd may 2015. Printed in china..