Air conditioner contents system air conditioner ceiling series 1. Precautions 2. Product specifications 3. Disassembly and reassembly 4. Troubleshooting 5. Pcb diagram 6. Wiring diagram 7. Reference sheet indoor unit outdoor unit model : ac052mncdkh ac071mncdkh ac100mncdkh ac120mncdkh ac140mncdkh ac...
2 samsung electronics contents 1. Precautions ........................................................................................................ 1-1 1-1 precautions for the service.....................................................................................................................
Samsung electronics 1-1 1. Precautions 1-1 precautions for the service use the standard parts when replacing the electric parts. – confirm the model name, rated voltage, rated current of the electric parts. When repairing the equipment, connection of the harness parts must be firm and solid. – a loo...
1-2 samsung electronics 1-3 precautions related to product safety do not pull the power cord and do not touch the power plug or aux power switch with wet hands. – it might cause electric shock or fire. A damaged power line or power plug must be replaced to prevent danger. Do not bend the power cable...
Samsung electronics 2-1 2. Product specifications 2-1 the feature of product 2-1-1 features auto changeover long lasting outdoor unit anti corrosion cabinet & heat exchanger are applied. Free installation 4 directions piping installation are possible. Various useful functions long piping : max.30m e...
2-2 samsung electronics 2-2 product specifications item ac052mncdkh ac052mxadkh ac071mncdkh ac071mxadkh image indoor unit outdoor unit remote controller power product 1Φ, 220~240v, 50hz 1Φ, 220~240v, 50hz indoor l x h x d mm(net) 1000*650*200 1000*650*200 outdoor l x h x d mm(net) 880*310*638 880*31...
Samsung electronics 2-3 item ac100mncdkh ac100mxadkh ac100mncdkh ac100mxadnh image indoor unit outdoor unit - - remote controller power product 1Φ, 220~240v, 50hz 3Φ, 380~415v, 50hz indoor l x h x d mm(net) 1650*675*235 1650*675*235 outdoor l x h x d mm(net) 940*330*998 940*330*998 indoor product kg...
2-4 samsung electronics item ac120mncdkh ac120mxadkh ac120mncdkh ac120mxadnh image indoor unit outdoor unit - - remote controller power product 1Φ, 220~240v, 50hz 3Φ, 380~415v, 50hz indoor l x h x d mm(net) 1650*675*235 1650*675*235 outdoor l x h x d mm(net) 940*330*998 940*330*998 indoor product kg...
Samsung electronics 2-5 item ac140mncdkh ac140mxadkh ac140mncdkh ac140mxadnh image indoor unit outdoor unit - - remote controller power product 1Φ, 220~240v, 50hz 3Φ, 380~415v, 50hz indoor l x h x d mm(net) 1650*675*235 1650*675*235 outdoor l x h x d mm(net) 940*330*1210 940*330*1210 indoor product ...
2-6 samsung electronics 2-3 accessory item descriptions code-no. Q'ty remark user manual installation manual db68-06497a db68-06498a 1 indoor unit (ac052/071mncdkh) plate wall db61-01351a 2 remote control db93-15882f 1 remote control holder db61-06087a 1 batteries for remote control 4301-000121 2 m4...
Samsung electronics 2-7 item descriptions code-no. Q'ty remark user manual installation manual db68-06497a db68-06498a 1 indoor unit (ac100/120/140mncdkh) insulation db62-04318s 1 insu drain hose db62-11028a 1 insu hose d db62-11028e 1 insu tube out db62-11028f 1 assy drain hose joint db67-01191a 1 ...
Samsung electronics 3-1 item remarks +screw driver adjustable wrench (8mm, 10mm, 13mm) m6, m8 hex wrench necessary tools 3. Disassembly and reassembly.
3-2 samsung electronics 3-1 indoor unit ■ ac052mncdkh/ac071mncdkh.
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Samsung electronics 3-11 no parts procedure remark 1 electrial part you must turn off the power before disassembly. 1) open the grille by sliding 4 position and removing 4 screws. 2) detach the air inlet grille. 3) detach the cover side by removing 1 screw and sliding cover. 4) open the cover of com...
3-12 samsung electronics no parts procedure remark 2 fan & motor 1) disconnect 2 wires of motor. 2) detach holder motor by removing 2 screws. 3) detach the upper case of fan. ( 4ea ) 4) detach bracket grille by removing 2 screws. Samsung electronics 3-3 no parts procedure remark 2 fan & motor 1) dis...
Samsung electronics 3-13 no parts procedure remark 3 drain pan 1) detach the cabinet front by removing 7 screws. 2) remove 1 screw in the middle of drain pan. 3) detach the drian pan. Be careful that there might be some water left in the drain pan when you remove the drain pan. 4 evaporator 1) detac...
3-14 samsung electronics no parts procedure remark 5 stepping motor 1) detach the connector. 2) detache the stepping motor by emoving 2 screws. 6 holder blade 1) remove 4 screws at both side of the holder blade. Samsung electronics 3-5 no parts procedure remark 3)detach the evaporator assembly by re...
Samsung electronics 3-15 ■ ac052mxadkh no parts procedure remark 1 common work you must turn off the power before disassembly. 1) loosen 1 pcs screw of cover control 2) loosen 8 pcs screw of the cabi top cover. 3) loosen 4 pcs screw of the bar steel. 4) loosen 10 pcs screw of the cabi side front. Ca...
3-16 samsung electronics no parts procedure remark 1 common work 2 fan& motor 1) loosen the fan screw according the indication and detach the fab propeller 2)disconnect the wire between assy control out and motor..
Samsung electronics 3-17 no parts procedure remark 2 3) loosen 4 pcs motor screw. 4) loosen 2 pcs screw of bracket motor. 3 assy control out 1)loosen the screws that connected partition and case control then get the control out. 2) loosen the screw of the cover termimal.
3-18 samsung electronics no parts procedure remark 3 3) loosen 2 screws , disassemble the coil harmonic. 4) loosen the screw of the cover terminal..
Samsung electronics 3-19 no parts procedure remark 4 heat exchanger 1) release the refrigerant at first 2) loosen fixing screw on both side.. 3) disassemble the pipes in both inlet and outlet with welding torch. 4) detach the heat exchanger. Caution when removing the compressor, heat exchanger, and ...
3-20 samsung electronics ■ ac071mxadkh no parts procedure remark 1 common work 1) loosen 1 pcs screw of cover control 2) loosen 8 pcs screw of the cabi top cover. 3) loosen 12 pcs screw of the cabi front 4) loosen 7 pcs screw of the cabi side right..
Samsung electronics 3-21 no parts procedure remark 5)loosen 3pcs screw of the cabi side left. 2 fan & motor 1) loosen the fan screw according the indication and detach the fab propeller 2)cut the cable-tie 3)disconnect the wire betwwen assy control out and motor..
3-22 samsung electronics no parts procedure remark 4) loosen 4 pcs motor screw. 5) loosen 4 pcs screw of bracket motor 3 assy control out 1) lossen the screw of the cover termimal 2)lossen the screws that connected partition and case control then pull up the control out..
Samsung electronics 3-23 no parts procedure remark 4 heat exchanger 1) release the refrigerant at first 2) looosen fixing screw on both side. 3) disaessembly the pipes in both inlet and outlet with welding torch. 4) detach the heat exchanger. 5 compressor 1)loosen the 3 bolts at the bottom of compre...
Samsung electronics 4-1 4-1 setting option setup method you cannot set both of the indoor unit addresses and the installation options in a batch: set both of them respectively. 4-1-1 common steps for setting the addresses and options mr-ec00 and mr-eh00 remote controls low temp button high temp butt...
4-2 samsung electronics take the steps presented in the following table: steps remote control display 1 set the seg2 and seg3 values: a set the seg2 value by pressing the (low fan) button repeatedly until the value you want to set appears on the remote control display. Seg2 b set the seg3 value by p...
Samsung electronics 4-3 steps remote control display 6 press the (mode) button. Fan and on appear on the remote control display. 7 set the seg9 and seg10 values: a set the seg9 value by pressing the (low fan) button repeatedly until the value you want to set appears on the remote control display. Se...
4-4 samsung electronics steps remote control display b set the seg15 value by pressing the (high fan) button repeatedly until the value you want to set appears on the remote control display. When you press the (low fan) or (high fan) button, values appear in the following order: seg15 1 press the (m...
Samsung electronics 4-5 steps remote control display 6 set the seg21 and seg22 values: a set the seg21 value by pressing the (low fan) button repeatedly until the value you want to set appears on the remote control display. Seg21 b set the seg22 value by pressing the (high fan) button repeatedly unt...
4-6 samsung electronics 1 check whether the air conditioner operates in accordance with the option values you have set: a reset the indoor or outdoor unit. • indoor unit : press the (set) and (low fan) buttons on the remote control simultaneously for 4 seconds. • outdoor unit : press the k3 button. ...
Samsung electronics 4-7 caution • the main address must be set to a value in the range 0 to 14. If you set other values, communication error will occur. • if any of seg5 and seg6 is set to a value in the range a to f, the main address of the indoor unit does not change. • if seg3 is set to 0, the in...
4-8 samsung electronics option seg7 seg8 seg9 seg10 seg11 seg12 function page use of drain pump reserved reserved reserved reserved indication and details indication details indication details 1 0 disuse 1 use 2 use with 3 minute delay option seg13 seg14 seg15 seg16 seg17 seg18 function page use of ...
Samsung electronics 4-9 • even if you set the use of drain pump (seg8) option to 0, it is automatically set to 2 (the drain pump is used with 3 minute delay). • if you set the maximum filter usage time (seg18) option to a value other than 2 and 6, it is automatically set to 2 (1000 hours). • if you ...
4-10 samsung electronics 4-2 indoor display error and check method • if an error occurs during the operation, one or more led flickers and the operation is stopped except the led. • if you re-operate the air conditioner, it operates normally at first, then detect an error again. Led display on the i...
Samsung electronics 4-11 ac100/120/140mncdkh abnormal conditions indicators remarks blue green orange red power reset x x x 0.5[s]=on, 0.5[s]=off operation on x x x operation off x x x x reservation x x x filter sign x x x defrosting x x x 1[s]=on, 9[s]=off smart install error x x x communication er...
4-12 samsung electronics wired remote control • if an error occurs, is displayed on the wired remote control. • if you would like to see an error code, press the test button. Display explanation e108 error due to repeated communication address e121 error on room temperature sensor of indoor unit (sh...
Samsung electronics 4-13 4-3 troubleshooting for outdoor unit the table below list the self-diagnostic routines. For some of error codes, you must contact an authorized service centre. If an error occurs during the operation, it is displayed on the outdoor unit pcb led, both main pcb and inverter pc...
4-14 samsung electronics no. Error code meaning remarks 23 e461 error due to operation failure of inverter compressor - 24 e462 system stop due to full current control - 25 e463 over current trip / pfc over current error check olp sensor 26 e464 ipm over current(o.C) ipm 27 e465 comp. Over load erro...
Samsung electronics 4-15 4-4 troubleshooting by symptoms wire remote controller display e121 symptom error of room sensor in the indoor unit(open/short) failure short or leakage of the room sensor 4-4-1 indoor temperature sensor (open/short) yes no no in this case, is the resistance value out of ran...
4-16 samsung electronics wire remote controller display e122, e123 symptom error of eva-in,eva-out sensor in the indoor unit(open/short) failure short or leakage of the eva sensor 4-4-2 eva in and out sensor (open/short) yes no no in this case, is the resistance value out of range in the temperature...
Samsung electronics 4-17 wire remote controller display e153 symptom 2nd detection of the float switch failure float switch open 4-4-3 float switch(open) no no yes is the resistance 0Ω ? Yes is the wire connector disconnected from the pcb?(cn411) replace the pcb and restart the unit connect the conn...
4-18 samsung electronics wire remote controller display e154 symptom error of fan motor in the indoor unit failure fan error 4-4-4 fan error no no no is there e154 after above 6 minute? Led of bldc pba is turned on? Yes yes yes is the motor connector disconnected from the pcb?(cn301) replace the pcb...
Samsung electronics 4-19 wire remote controller display e162 symptom eeprom pcb disconnected from the main pcb failure option error 4-4-5 eeprom error no no yes is the error mode disappear ? Yes is the eeprom pcb disconnected from the main pcb?(cn201) the indoor unit work normaly connect the eeprom ...
4-20 samsung electronics wire remote controller display e163 symptom eeprom option setting error failure option error 4-4-6 option error no yes is the error mode disappear ? The indoor unit work normaly replace the pcb and restart the unit input the right option to eeprom pcb.
Samsung electronics 4-21 wire remote controller display e198 symptom error of terminal block's terminal fuse(open) failure fuse open 4-4-7 terminal block's terminal fuse(open) no no yes is the resistance 0Ω ? Yes is the wire connector disconnected from the terminal block and pcb?(cn140) replace the ...
4-22 samsung electronics 4-4-8 communication error after finishing tracking (e202) 1. Check items 1) is the communication cable short/open? 2) is there a response from the indoor unit pcb? 2. Check procedure no yes is there a response from the indoor unit pcb? No yes in this case, is the voltage wav...
Samsung electronics 4-23 wire remote controller display e422 symptom clogging of outdoor's service valve failure valve clog 4-4-9 outdoor's service valve(clog) no yes is the outdoor service valve clogged? Open the outdoor's service valve replace the pcb and restart the unit.
4-24 samsung electronics 4-4-10 no power(completely dead) - initial diagnosis outdoor unit is not powered on – initial diagnosis (1phase) 1. Check items 1) is the power supply voltage 220v? 2) is the ac power connected correctly? 3) are the leds in the main pcb and inverter pcb of the outdoor unit o...
Samsung electronics 4-25 yes outdoor unit is not powered on – initial diagnosis (1phase) (cont.) yes connect the reactor no is the reactor connector connected correctly? Replace the pba. Cont..
4-26 samsung electronics cont. Outdoor unit is not powered on – initial diagnosis ( 3phase) 1. Check items: 1) is the power supply voltage 380v? 2) is the ac power connected correctly? 3) are the leds in the main pcb and inverter pcb of the outdoor unit on? 4) is the input power voltage of the indoo...
Samsung electronics 4-27 yes outdoor unit is not powered on – initial diagnosis ( 3phase) (cont.) yes yes reconfigure the option dip switches check the system depending on the error display no no are the option dip switches inside the wired remote controller configured correctly? Is there an error m...
4-28 samsung electronics 4-4-11 e102 : communication error between indoor and outdoor unit e201 : unit quantity miss matching beween indoor and outdoor e202 : abnormal state, no communication between indoor and outdoor main pcb e203 : 1min time out of communication error(main ↔inverter) 1. Checklist...
Samsung electronics 4-29 4-4-12 external sensor error (error code: e221, e231, e251, e320) 1. Test item 1) check the connection of the temperature sensor connector. 2) check the resistance value of the temperature sensor. 2. Check procedure error code description e221 error of the temperature sensor...
4-30 samsung electronics 4-4-13 e403 : freezing control causes comp. Down no no no yes yes yes check the indoor fan. Check the eev. Same as when checking other temp sensors. Check for clogging in the suction area of the indoor machine. The indoor fan/motor operates normally? The indoor eev operates ...
Samsung electronics 4-31 4-4-14 e416 : dischage temperature sensor error no yes yes yes check the amount of coolant. The sensor's resistance normal? (refer to e251.) the outdoor/indoor eev operates normally? All the sub valves open? Clogging in the pipeline? (ex-filter) outdoor unit display e416 cri...
4-32 samsung electronics 4-4-15 e440, e441 : abnormal outside temperature halts operation of the compressor outdoor unit display e440 (no heater operation with the outside temperature above 30°c.) e441 no ac operation with the outside temperature below -10°c.) criteria •thecompressortemperatureabove...
Samsung electronics 4-33 4-4-16 outdoor unit bldc fan1 or fan2 error (e458 : fan1 error, e475 : fan2 error) 1. Checklist : 1) isn’t the fan locked? 2) is the sensor placed correctly? 3) does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) is the resistance...
4-34 samsung electronics 4-4-17 e461: compressor start error e467: compressor wire missing error 1. Checklist : 1) is the connection of cable for the compressor and power? 2) is the interphase resistance of compressor normal? 2. Troubleshooting procedure yes restart after power off. Is the restart e...
Samsung electronics 4-35 no no yes finished inspections 4-4-18 e462 : current protection control causes comp. Down e484 : pfc overload error outdoor unit display e462,e484 criteria •theoutdoormachineinputcurrentabovei_trip. Cause of problem •checkthecompressorinputvoltage.(errorforlowvoltage.) •chec...
4-36 samsung electronics 4-4-19 e463 : olp protection control caused comp. Down outdoor unit display e463 criteria •olpsensortempabovetrip_dis. Cause of problem •seeifthesubvalveisopen. •checktheamountofcoolant. •checktheolpsensor. 1. How to check no no no no no yes yes yes check the amount of coola...
Samsung electronics 4-37 4-4-20 e464 : o.C. (over current) error 1. Checklist : 1) is the refrigerant charged properly? 2) does the compressor rotate normally?(reverse rotation, locking etc.) 3) is connection of compressor wire normal? 4) is compressor motor normal?(insulation, coil resistance etc.)...
4-38 samsung electronics 4-4-21 e466: dc link over voltage/ low voltage error 1. Checklist : 1) is the power voltage normal?(lightning, power interruption etc.) 2) is ac power cable connection normal?(detaching the wire) 2. Troubleshooting procedure yes no no no no yes yes yes push the center bar of...
Samsung electronics 4-39 4-4-22 pipe blocking error (error code: e422) 1. Test item 1) check the open state of the outdoor unit service valve. 2) check the connection of the pipe. 3) check the operation of the eev. 4) check the refrigerant leakage. 5) check the connection of the indoor unit pba eva ...
4-40 samsung electronics 1. E465 : compressor over load error •ifacompressorworksimproperly,changethecompressorandcheckifitworksproperly. → if a compressor is normal, check the assembly between heatsink-inverter pba. If it is fine, change inverter pba. 2. E468 : current sensor error •check eeprom da...
Samsung electronics 5-1 5. Pcb diagram and parts list 5-1 indoor unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 tb101 input power 2 cn101 gvd ydw236-01(wht) 3 cn701 bldc fan motor yw396-06v(wht) 4 cn140 fuse check smw200-02(wht) 5 cn809 auto grille smw200-05(blk) 6 cn501 display smy200...
5-2 samsung electronics 1 2 4 5 6 8 3 10 12 13 14 11 15 16 17 18 19 7 9 no part code local function description 1 3711-003942 cn140 smw200-02(wht) drain pump 2 3711-000203 cn906 ym396-03av(wht) bldc pba power 3 3711-003404 cn101 yw396-03av(blu) gnd 4 3711-000179 cn701 yw396-02v(yel) float-s/w 5 3711...
Samsung electronics 5-3 no part code local function description 14 3711-000795 cn804 smw250-02(blu) fan motor comm 15 3711-004182 cn905 smw200-10(wht) eva dis/out sensor 16 3711-003895 cn501 smw200-13(wht) 2wire option 17 3711-000794 cn411 smw250-02(blk) louver 18 3711-000015 cn412 smw250-02(wht) ro...
5-4 samsung electronics 5-2 outdoor unit main pcb ac052mxadkh 5 4 3 2 1 7 6 8 9 10 11 12.
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...
5-6 samsung electronics sub pcb ac052mxadkh 1 2 ① #1 : dc12v #2 : gnd ② #1~#28 : signal to main pcb cn12 : dc12v cn951 : signal to main pcb.
Samsung electronics 5-7 main pcb ac071mxadkh no. Description 1 smps power :yw 396-03av blu 2 4way :yw 396-03av wht 3 comm :yw 396-02v red 4 temp sensor :smw200-08p wht 5 dred :smw250-05 wht 6 sub pba :smw200-10p wht 7 sub pba :smw200-10p blk 8 eev1 :smw250-05 red 9 smps :smw250-03 blu 10 eeprom :b7p...
Samsung electronics 6-1 6. Wiring diagram 6-1 indoor unit this document can not be used without samsung’s authorization. ■ ac052mncdkh / ac071mncdkh.
6-2 samsung electronics this document can not be used without samsung’s authorization. ■ ac100mncdkh / ac120mncdkh / ac140mncdkh.
Samsung electronics 6-3 6-2 outdoor unit ac052mxadkh / ac071mxadkh this document can not be used without samsung’s authorization..
Samsung electronics 7-1 7. Reference sheet 7-1 index for model name model code h d h a h k h eu h/ h 026 h h h ac h m h x product type code type am dvm aj pma ac cac (usd) / asd ae ehs an vtl ak pak (packaged system) ag chr product type code type e 2012 f 2013 h 2014 j 2015 k 2016 m 2017 product typ...
7-2 samsung electronics ■ condenser high temperature and high pressure gas state coolant discharged from the compressor is converted to a liquid state as it is cooled down by the heat emission in the outdoor condenser unit, and sent to the evaporator. ■ compressor low temperature and low pressure co...
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. Jun. 2016. Printed in china..