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Samsung AM036NXMDCR Service Manual

Manual is about: SYSTEM AIR CONDITIONER

Summary of AM036NXMDCR

  • Page 1

    Refer to the service manual in the gspn(see the rear cover) for the more information. Air conditioner contents system air conditioner outdoor unit am036nxmdcr am048nxmdcr am053nxmdcr am060nxmdcr ■ product specifications ■ disassembly and reassembly ■ refrigerant pipe installation ■ troubleshooting ■...

  • Page 2: Contents

    Contents ■ product specifications .......................................................................................... 4 1. The feature of product .................................................................................................................................. 4 1-1 feature .....

  • Page 3

    3-25 comp down due to olp temperature control (error code : e463) .................................................61 3-26 compressor starting/rotation error (error code : e461, e467) ..........................................................62 3-27 current error / pfc overload error (error code : e...

  • Page 4: Product Specifications

    4 samsung electronics high performance bldc fan motor cross section of a turbo inter-cooler 33% more efficient compare to ac motor wide speed control range, less noise generation turbo inter-cooler long piping up to 175m with sub-cooling up to 50m levela difference is allowed for installation twin b...

  • Page 5

    Product specifications samsung electronics 5 20 30 40 0 2 4 8 10 12 0.00 0.08 0.04 0.12 0.24 0.16 amount of transferred heat (kw/m) refrigerant flow (kg/h) increased by 30.8% decreased by 14% pressure loss (kpa/m) Ø7 groove Ø8 high groove new Ø7 wide fin Ø7 wide fin heat transfer amount 15% new Ø8 w...

  • Page 6

    Product specifications 6 samsung electronics raw aluminum material anti corrosive layer (epoxy acrylic) hydrophilic layer (acrylic resin + surfactant) company a no corrosion after 1,000 hours of test corrosion is evident after 1,000 hours of test 92 9m 2.0 9m 0.3 9m * tested by samsung company a lev...

  • Page 7

    Product specifications samsung electronics 7 operation time 12 hours of silent mode 6 hours 7 : 00 13 : 30 19 : 00 7 : 00 end highest temperature ※ 3 month worth of data can be saved when memory module is installed black box function of the main pcs feature (cont.) memory module • achieves world-cla...

  • Page 8

    Product specifications 8 samsung electronics refrigerant pump-down if you need to move/replace the outdoor unit or when there are problems on indoor units or on the pipes, outdoor unit will recover refrigerant remaining on the pipes. 6 hours outdoor fan rpm night night 12 hours indoor unit malfuncti...

  • Page 9

    Product specifications samsung electronics 9 feature (cont.) conventional * for models with 9kw or larger (flare type connection) convenient product installation service valve is not exposed to keep the neat appearance and pipe can be connected in 4 different directions which provide flexible instal...

  • Page 10

    Product specifications 10 samsung electronics type performance ton 3ton 4ton 4.5ton 5.0 ton model am036nxmdcr am048nxmdcr am053nxmdcr am060nxmdcr power supply(Φ/v/hz) 1,208-230,60 1,208-230,60 1,208-230,60 1,208-230,60 mode hr hr hr hr performance cooling btu/h 38,000 48,000 53,000 60,000 heating bt...

  • Page 11

    Product specifications samsung electronics 11 type performance ton 3ton 4ton 4.5ton 5.0 ton model am036nxmdcr am048nxmdcr am053nxmdcr am060nxmdcr set size net weight kg 97 97 100 125 lbs 213.8 213.8 220.5 275.6 shipping weight kg 107 107 110 135 lbs 235.9 235.9 242.5 297.6 net dimension (wxhxd) mm 9...

  • Page 12: Disassembly and Reassembly

    12 samsung electronics necessary tools ■ disassembly and reassembly item remark +screw driver monkey spanner –screw driver nipper electric motion driver l-wrench.

  • Page 13

    Disassembly and reassembly samsung electronics 13 no parts procedure remark 1 cabi front rh you must turn off the power before disassembly. 1) unscrew and remove 2 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. ...

  • Page 14

    Disassembly and reassembly 14 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 ...

  • Page 15

    Disassembly and reassembly samsung electronics 15 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 16

    Disassembly and reassembly 16 samsung electronics no parts procedure remark 8 fan 1) turn 2 mounting nuts as shown in the picture and remove it. (use l wrench or monkey spanner or socket wrench ).

  • Page 17

    Disassembly and reassembly samsung electronics 17 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 b...

  • Page 18

    Disassembly and reassembly 18 samsung electronics no parts procedure remark 11 control out 1) disconnect 10 connectors 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 19

    Disassembly and reassembly samsung electronics 19 no parts procedure remark 12 ass'y tube eev 1) purge the coolant first. 2) separate 2 parts of the pipe using a welder. When removing the compressor, heat exchanger and pipe, purge the refrigerant inside the compressor completely and remove the pipe ...

  • Page 20

    Disassembly and reassembly 20 samsung electronics no parts procedure remark 15 compressor 1) unscrew and remove 1 mounting nut in bottom of the cover. (use adjustable wrench) 2) separate the compressor felt. 3) as shown in the picture, unscrew and remove 3 mounting screws from the bottom. (use l-wre...

  • Page 21

    Disassembly and reassembly samsung electronics 21 no parts procedure remark 16 cond out 1) unscrew and remove 3 screws on each side of the ass’y cond out. (use + screw driver).

  • Page 23

    Disassembly and reassembly samsung electronics 23 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).

  • Page 24

    Disassembly and reassembly 24 samsung electronics 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).

  • Page 25

    Disassembly and reassembly samsung electronics 25 no parts procedure remark 5 cabi back rh 3) unscrew and remove 5 screws on side of the case bracket valve. (use + screw driver) 6 cabi install back 1) unscrew and remove 1 screw in the cabinet install front. (use +screw driver).

  • Page 26

    Disassembly and reassembly 26 samsung electronics no parts procedure remark 7 cabi front lf 1) unscrew and remove 10 screws in the cabinet-front lf. (use +screw driver).

  • Page 27

    Disassembly and reassembly samsung electronics 27 no parts procedure remark 7 cabi front lf 8 fan 1) turn 2 mounting nuts as shown in the picture and remove it. (use l wrench ormonkey spanner or socket wrench ).

  • Page 28

    Disassembly and reassembly 28 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 b...

  • Page 29

    Disassembly and reassembly samsung electronics 29 no parts procedure remark 11 control out 1) disconnect 13 connectors from ass’y control out. 2) unscrew and remove 1 mounting screw in control out. (use + screw driver.) 3) separate ass’y control out. 12 assy tube parts 1) separate 5 parts of the pip...

  • Page 30

    Disassembly and reassembly 30 samsung electronics no parts procedure remark 10 bracket motor 2) unscrew and remove 1 mounting screws in assy bracket valve. (use + screw driver.) 3) unscrew and remove 2 mounting screws in bracket accume. (use + screw driver.) 4) separate the assy tube 4way-accumulato...

  • Page 31

    Disassembly and reassembly samsung electronics 31 no parts procedure remark 14 cond out 1) unscrew and remove 3 screws on each side of the ass’y cond out. (use + screw driver).

  • Page 32

    32 samsung electronics ■ refrigerant pipe installation 1. Examples of the correct refrigerant pipe installation for heat recovery for serial installation for parallel installation 1)* direct-connected indoor unit without hr changer/mcu (for hr only) - this indoor unit can only be used for cooling op...

  • Page 33

    Disassembly and reassembly samsung electronics 33 2. Examples of the incorrect refrigerant pipe installation for heat recovery missing hr changer for serial installation missing hr changer for parallel installation incorrect order branch location error • hr changer(e) can be installed in series or i...

  • Page 34: Troubleshooting

    34 samsung electronics ■ troubleshooting 1. Error display error display.

  • Page 35

    Troubleshooting samsung electronics 35 2. Error code code explanation e-101 indoor unit communication error. Indoor unit can not receive any data from outdoor unit. E-102 communication error between indoor unit and outdoor unit. Displayed in indoor unit. E-108 error due to repeated address setting (...

  • Page 36

    Troubleshooting 36 samsung electronics error mode cause e-218 when there’s at least one or more actual number of indoor unit connection compared to number of indoor units assigned to mcu e-219 error on temperature sensor located on mcu intercooler inlet (short or open) e-220 error on temperature sen...

  • Page 37

    Troubleshooting samsung electronics 37 error mode cause e-483 h/w dc_link over voltage error e-484 pfc overload error e-485 error due to input current of inverter 1 e-488 ac input voltage sensor error e-489 v-limit error on fan1 of compressor e-500 error due to overheat caused by contact failure on ...

  • Page 38

    Troubleshooting 38 samsung electronics 3. How to take measures for each symptom 3-1 communication error between indoor and outdoor units during tracking (error code : e201) 1. How to check yes yes compare the number of setting values of setup switch for the number of indoor unit installed for the ou...

  • Page 39

    Troubleshooting samsung electronics 39 3-2 communication error between indoor and outdoor units after completing tracking (error code : e202) 1. How to check press the reset key (k3) of the outdoor unit pcb then check the display part. At that time, is the power between the 2 lines a square wave? Is...

  • Page 40

    Troubleshooting 40 samsung electronics 3-3 communication error (1 minute) between main and sub micoms of an outdoor unit or among outdoor units (error code : e203) 1. Check items 1) is there power on outdoor unit inverter pba? 2) connect the power cable/check the fuse 3) is there any problem on comm...

  • Page 41

    Troubleshooting samsung electronics 41 3-4 mcu branch part setup error – inconsecutive connection with the use of 2 branch parts 1. How to check find an mcu that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting, press k3 button on the b...

  • Page 42

    Troubleshooting 42 samsung electronics 3-5 mcu branch part setup error – repeated setup for the same address over 3 times 1. How to check find an mcu that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting, press k3 button on the button t...

  • Page 43

    Troubleshooting samsung electronics 43 3-6 mcu branch part setup error – non-installed address setup 1. How to check find an mcu that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting, press k3 button on the button to reset or turn it of...

  • Page 44

    Troubleshooting 44 samsung electronics branch 3-7 communication error (1 minute) between main and sub micoms of an outdoor unit or among outdoor units (error code : e203) 1. Inspection method : check the main pcb mcu quantity setting switch of the outdoor unit and check the installed mcu quantity ma...

  • Page 45

    Troubleshooting samsung electronics 45 3-8 mcu branch part setup error – overlapping indoor unit address setup 1. How to check check the setup switch for the number of indoor units in mcu after completing resetting, press the outdoor unit's k3 button to reset or turn off to restart. Mcu box #0 mcu p...

  • Page 46

    Troubleshooting 46 samsung electronics 3-9 mcu branch part setup error – set as being used without connection to an indoor unit 1. How to check adjust the dip switch that sets up the use of mcu branch part to ‘not-used'. After completing resetting, press the outdoor unit's k3 button to reset or turn...

  • Page 47

    Troubleshooting samsung electronics 47 3-10 mcu branch part setup error – connect an indoor unit to a branch part not being used 1. How to check check the actual use of the branch part. If it is used, turn on the dip switch for branch part setup. After completing resetting, press the outdoor unit's ...

  • Page 48

    Troubleshooting 48 samsung electronics 3-11 mcu branch part setup error – connect more indoor units than what is actually set up in mcu 1. How to check check the number of indoor units connected to mcu then readjust the switch for the number of units after completing resetting, press the outdoor uni...

  • Page 49

    Troubleshooting samsung electronics 49 3-12 mcu/mcu subcooler entrance/exit sensor error (open/short) 1. Cause of problem is the sensor connector connected on the pcb ? Is the resistor value matching with “note1” table? Separate the connector from the pcb and measure the resistance value between the...

  • Page 50

    Troubleshooting 50 samsung electronics 3-13 outdoor temperature sensor error(open/short) (error code : e221, e231, e251, e269, e276, e311 e321, e322, e323) 1. Check items 1) check the temperature sensor connector 2) check the resistance value of outdoor temperature 2. Check procedure error code erro...

  • Page 51

    Troubleshooting samsung electronics 51 3-14 high pressure temperature sensor error (open/short) (error code : e291) low pressure temperature sensor error (open/short) (error code : e296) 1. High/low pressure sensor open/short error determination method 1) identifies from when power is supplied or 2 ...

  • Page 52

    Troubleshooting 52 samsung electronics 3-15 compressor down by antifreeze control (error code: e403) 1. Check items 1) check if the indoor fan/motor is working properly 2) check if the indoor eev is working properly 3) check the indoor heat exchanger in/out sensor 4) check if the indoor air inlet bl...

  • Page 53

    Troubleshooting samsung electronics 53 3-16 comp. Down due to a protective control of high pressure (error code : e407) 1. How to check do the values of s-net and manifold gauge correspond? Does indoor/outdoor eev operate well? Is there any clogged place in the piping (ex. Filter)? Check the amount ...

  • Page 54

    Troubleshooting 54 samsung electronics 3-17 comp. Down due to a protective control of low pressure (error code : e410) 1. How to check do the values of s-net and manifold gauge correspond? Does indoor/outdoor eev operate well? Is there any clogged place in the piping (ex. Filter)? Check the amount o...

  • Page 55

    Troubleshooting samsung electronics 55 3-18 comp. Down due to a discharge temperature sensor of a compressor (error code : e416) 1. How to check is the discharge sensor resistance of the compressor normal? (refer to e251) test operation are service valves open? Do the values of s-net and manifold ga...

  • Page 56

    Troubleshooting 56 samsung electronics 3-19 reverse phase detection error (3phase outdoor unit) (error code : e425) 1. When power is on, it checks the power status used for 3-phase power compressor. When the order of 3-phase l1(r) – l2(s) – l3(t) is changed (reversed) or there is a phase that does n...

  • Page 57

    Troubleshooting samsung electronics 57 3-20 esc eev open error (error code : e438) 1. How to check check the amount of refrigerant no check and connect the connector is the esc eev connector correctly connected to the pba? Yes no check and assemble the coil is eev coil correctly connected? Yes failu...

  • Page 58

    Troubleshooting 58 samsung electronics 3-21 refrigerant leakage error (error code : e439) 1. Determining high/low-pressure sensor open/short error 1) identifies from when power is supplied or 2 minutes after reset, and only when set is stopped. 2) an e439 error will occur if the input voltage standa...

  • Page 59

    Troubleshooting samsung electronics 59 3-22 prohibition of the compressor operation due to outdoor temperature (error code : e440, 441) 1. How to check the above error code is not caused by a product's problem but a function to protect the product by limiting the available temperature range so pleas...

  • Page 60

    Troubleshooting 60 samsung electronics 3-24 outdoor unit fan error (error code : e458, 475 ) 1. Check items 1) check the connection of the fan connector (cn90, cn 91) 2) check the voltage of the fan motor connector on outdoor unit inverter pba 3) check the power connection on outdoor unit inverter p...

  • Page 61

    Troubleshooting samsung electronics 61 3-25 comp down due to olp temperature control (error code : e463) 1. How to check is resistance value on olp sensor normal? (refer to e320) test operation are service valves open? Do the values of s-net and manifold gauge correspond? Does indoor/outdoor eev ope...

  • Page 62

    Troubleshooting 62 samsung electronics 3-26 compressor starting/rotation error (error code : e461, e467) 1. Check items 1) check the power and restarting after power reset 2) check for compressor and compressor wire assembly 3) check for compressor wire problem 2. Check procedure yes turn off the po...

  • Page 63

    Troubleshooting samsung electronics 63 compressor starting/rotation error (error code : e461, e467) (cont.) 1. Change the compressor wire → turn on the power → end service 2. Change the compressor wire → turn on the power → end service 3. Change the compressor wire → turn on the power → end service ...

  • Page 64

    Troubleshooting 64 samsung electronics troubleshooting 3-27 current error / pfc overload error (error code : e462, e484) 1. Check items 1) check the power and restarting after power reset. 2) check the outdoor unit installation and environments. → check if the outdoor unit inverter pba related wires...

  • Page 65

    Troubleshooting samsung electronics 65 3-28 ipm over current error (error code : e464) 1. Check items 1) check the power and restarting after power reset 2) check the outdoor unit installation and environments → check if the outdoor unit inverter pba related wires are disconnected. Check the install...

  • Page 66

    Troubleshooting 66 samsung electronics ipm over current error (error code : e464) (cont.) yes turn off the power and change the location of the temperature sensor or replace it no is the location and measured value of the temperature sensor normal? Check the connection of the compressor no are the c...

  • Page 67

    Troubleshooting samsung electronics 67 ipm over current error (error code : e464) (cont.) yes 1. Change the compressor wire → turn on the power → end service 2. Change the compressor wire → turn on the power → end service 3. Change the compressor wire → turn on the power → end service no check the c...

  • Page 68

    Troubleshooting 68 samsung electronics 3-29 dc-link voltage under/over error (error code : e466) 1. Check items 1) check the power and restarting after power reset → is there any problem with input power? (1 phase: 220vac, 3 phase: 380vac) → does error occur again during operation after power reset?...

  • Page 69

    Troubleshooting samsung electronics 69 dc-link voltage under/over error (error code : e466) (cont.) 1. Connect the terminal block screw and the power cable → check for normal operation → end service 2. Connect the terminal and the power cable in the power terminal cabinet → check for normal operatio...

  • Page 70

    Troubleshooting 70 samsung electronics 3-30 others 1. Compressor vlimit error: e465 if the compressor operation is abnormal, change the compressor and check for normal operation → if the compressor operation is normal, check the assembly between heat sink plate and if there is no problem, change the...

  • Page 71: Pcb Diagram

    Samsung electronics 71 ■ pcb diagram 1. Outdoor unit pcb - main pcb 1 2 3 4 8 5 6 9 11 7 13 10 12 14 15 16 17 18 19 20 23 21 22.

  • Page 72

    72 samsung electronics pcb diagram main pcb (cont.) no. Local function description 1 cn800 external ctrl smw250-02 red 2 cn401 low pressure sensor b04b-xark-1 blu 3 cn402 high pressure sensor b04b-xark-1 red 4 cn305 comm inv smw250-06 wht 5 cn803 main eev smw250-06 blu 6 cn804 eev a smw250-05 blu 7 ...

  • Page 73

    Samsung electronics 73 pcb diagram outdoor unit pcb (cont.) - inverter pcb : 1phase no. Local function description 1 cn901 fan1 yw396-06v wht 2 cn911 fan2 yw396-06v wht 3 cn401 comp 42819-3213 blk 4 reactor_a2 reactor_a2 ytr250 5 reactor_a1 reactor_a1 ytr250 6 reactor_b2 reactor_b2 ytr250 7 reactor_...

  • Page 74

    74 samsung electronics pcb diagram outdoor unit pcb (cont.) - emi pcb : 1phase no. Local function description 1 l1 ac power ot-048 2 earth earth yel/grn wire 3 l ac power brn wire 4 n ac power sky/blu wire 5 n1 ac power ot-048 6 cn01 ac power yw396-03av wht 5 4 3 2 1 6.

  • Page 75: Wiring Diagram

    Samsung electronics 75 ■ wiring diagram this document can not be used without samsung’s authorization. 1. 1 phase (am036/048/053/060nxmdcr).

  • Page 76: Reference Sheet

    76 samsung electronics ■ reference sheet 1. Refrigerant cycle diagram 1-1 am036/048/053nxmdcr name am036nxmdcr am048nxmdcr am053nxmdcr “a” service v/v 15.88 “b” service v/v 19.05 e comp ofm1 hx_m ac os ps_h ps_l pw_h e_m e_ev v_hg v_4w cv_d t_d t_s t_co t_ l t_ct t_a sv_ g sv_ l ofm2 t_s2 s e ic sv_...

  • Page 77

    Samsung electronics 77 reference sheet 1-2 am036/048/053nxmdcr (cooling mode) hr changer dvm s eco hr s e e e s e e e e e s indoor unit s s s s s s e e e high temperature & high pressure gas high temperature & high pressure liquid low temperature & pressure liquid solenoid valve on s s solenoid valv...

  • Page 78

    78 samsung electronics reference sheet 1-3 am036/048/053nxmdcr (main cooling mode) hr changer dvm s eco hr s e e e s e e e e e s indoor unit s s s s s s e e e high temperature & high pressure gas high temperature & high pressure liquid low temperature & pressure liquid solenoid valve on s s solenoid...

  • Page 79

    Samsung electronics 79 reference sheet 1-4 am036/048/053nxmdcr (heating mode) hr changer dvm s eco hr e e s e e e e e indoor unit s s s s s e e e +ljkwhpshudwxuhkljksuhvvxuhjdv +ljkwhpshudwxuhkljksuhvvxuholtxlg /rzwhpshudwxuhsuhvvxuh/ltxlg 6rohqrlgydoyh2q s s 6rohqrlgydoyh2ii /rzwhpshudwxuhsuhvvxuhj...

  • Page 80

    80 samsung electronics reference sheet 1-5 am036/048/053nxmdcr (main heating mode) hr changer dvm s eco hr e e s e e e e e indoor unit s s s s s e e e high temperature & high pressure gas high temperature & high pressure liquid low temperature & pressure liquid solenoid valve on s s solenoid valve o...

  • Page 81

    Samsung electronics 81 reference sheet 2-1 outdoor unit 2. Nomenclatures h d h m h c h 053 h am h n h x ① classification am dvm ② capacity sss btu/h ③ version f 2013 h 2014 j 2015 k 2016 m 2017 n 2018 ⑧ mode c cooling only h heat pump r heat recovery ④ product type n indoor unit (nasa) x outdoor uni...

  • Page 82

    82 samsung electronics ■ check operation & amount of refrigerant automatically checking 1. Check operation 1-1 check operation 1) what is the check operation? Dvm mini main components defective check and check the status of the installation, provide guidelines that can promptly and accurately resolv...

  • Page 83

    Samsung electronics 83 check operation & amount of refriherant automatically checking ※ if out of warranty coverage and bounds, installation, operation according to the conditions the some of items displayed as "undetermined" and judgment is not. Ex) system that module installed : if the outdoor uni...

  • Page 84

    84 samsung electronics check operation & amount of refriherant automatically checking 1-2 how to troubleshoot of the "undetermined" 1) indoor unit temperature sensor ■ inspection item : indoor temperature of each indoor unit, eva in / out temperature sensor ■ error code: none (the resulting report "...

  • Page 85

    Samsung electronics 85 check operation & amount of refriherant automatically checking 2) outdoor unit temperature sensor ■ inspection item : outdoor temperature of each outdoor unit, cond_out, suction, liquid pipe temperature sensor ■ error code: none (the resulting report "undetermined") ■ determin...

  • Page 86

    86 samsung electronics check operation & amount of refriherant automatically checking 3) pressure sensor ■ inspection item : high/low pressure sensor of the independent installed outdoor unit. ■error code: none (the resulting report "undetermined") ■ determine the status of the pressure sensor of th...

  • Page 87

    Samsung electronics 87 check operation & amount of refriherant automatically checking 4) abnormal operation of the compressor ■ inspection item : operation current of outdoor unit compressor. ■ error code: none (the resulting report "undetermined") ■ determine the status of the operating current of ...

  • Page 88

    88 samsung electronics check operation & amount of refriherant automatically checking 5) cycle status ■ inspection item : cycle status of outdoor unit. ■ error code: none (the resulting report "undetermined") ■ determine the cycle status of the each outdoor unit. ■ if the judgment of cycle status is...

  • Page 89

    Samsung electronics 89 check operation & amount of refriherant automatically checking 6) 4way valve ■ inspection item : 4way valve of outdoor unit. ■ error code: none (the resulting report "undetermined") ■ determine the 4way valve operation status of the each outdoor unit. ■ if the judgment of 4way...

  • Page 90

    90 samsung electronics check operation & amount of refriherant automatically checking 7) main eev ■ inspection item : main eev of outdoor unit.(automatic commissioning : heating only ) ■ error code: none (the resulting report "undetermined") ■ determine the main eev operation status of the each outd...

  • Page 91

    Samsung electronics 91 check operation & amount of refriherant automatically checking 2. Automatic refrigerant amount detection function (checking th amount of refrigerant) this function detects amount of refrigerant in the system through refrigerant amount detection operation. [caution] • if the op...

  • Page 92

    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. March. 2018. Printed in korea. Code no. Ac-00216e_1 gspn (global service partner network) area web sit...