Samsung AM005NNNDCH Series Service Manual

Manual is about: System Airconditioner, INDOOR UNIT

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SYSTEM AIRCONDITIONER

CONTENTS

SYSTEM AIRCONDITIONER

INDOOR UNIT

AM045/056/071/090/112/128/140NN4DEH/**

AM015/022/028/036/045/056/060NNNDEH/**

AM009/012/018/024/036/048NN4DCH/**

AM005/007/009/012/018/020NNNDCH/**

1. Precautions

2. Product Specifications

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram and Parts List

6. Wiring Diagram

7. Reference Sheet

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Summary of AM005NNNDCH Series

Page 1
System airconditioner contents system airconditioner indoor unit am045/056/071/090/112/128/140nn4deh/** am015/022/028/036/045/056/060nnndeh/** am009/012/018/024/036/048nn4dch/** am005/007/009/012/018/020nnndch/** 1. Precautions 2. Product specifications 3. Disassembly and reassembly 4. Troubleshooti...
Page 2: Contents
Contents 1. Precautions .................................................................................................................................. 5 1-1 precautions for the service ..................................................................................................................
Page 3: Contents
Contents 4-4-34 setup error for mcu branch part – setup error for mcu quantity used ................................................82 4-4-35 mcu branch part setup error – overlapping indoor unit address setup ...............................................83 4-4-36 mcu branch part setup error – set...
Page 4: Contents
Contents 4-4-96 breakaway of flow switch .......................................................................................................................................................144 4-4-97 thermostat wiring error ............................................................................
Page 5: 1. Precautions
Samsung electronics 5 1. Precautions 1-1 precautions for the service ● use the correct parts when changing the electric parts. – please check the labels and notices for the model name, proper voltage, and proper current for the electric parts. ● fully repair the connection for the types of harness w...
Page 6
Precautions 6 samsung electronics 1-4 precautions for handling refrigerant for air conditioner environmental cautions: air pollution due to gas release ● safety cautions if liquid gas is released, then body parts that come into contact with it may experience frostbite/blister/numbness. If a large am...
Page 7: 2. Product Specifications
Samsung electronics 7 2. Product specifications 2-1 product specifacations 2-1-1 indoor unit *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7....
Page 8
Product specifications 8 samsung electronics *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7.5m, level differences : 0m *3) nominal heating c...
Page 9
Product specifications samsung electronics 9 *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7.5m, level differences : 0m *3) nominal heating c...
Page 10
Product specifications 10 samsung electronics *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7.5m, level differences : 0m *3) nominal heating ...
Page 11
Product specifications samsung electronics 11 *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7.5m, level differences : 0m *3) nominal heating ...
Page 12
Product specifications 12 samsung electronics *1) mode - hp : heat pump, hr : heat recovery *2) nominal cooling capacities are based on; - indoor temperature : 27˚c db, 19˚c wb - outdoor temperature : 35˚c db, 24˚c wb, equivalent refrigerant piping : 7.5m, level differences : 0m *3) nominal heating ...
Page 13
Product specifications samsung electronics 13 2-2 accessory and option specifications 2-2-1 accessories classification product model image application model integrated manage- ment system controller dms 2 mim-d00an dvm series, fjm, cac, erv hydro unit, hydro unit ht s-net 3 mst-p3p dvm series, fjm, ...
Page 14
Product specifications 14 samsung electronics classification feature model description relevant unit remark y-joint mxj-ya1509m 15.0 kw and below dvms hp / hr requisite mxj-ya2512m over 15.0 ~ 40.6 kw and below mxj-ya2812m over 40.6 ~ 46.4 kw and below mxj-ya2815m over 46.4 ~ 69.6 kw and below mxj-y...
Page 15
Product specifications samsung electronics 15 classification feature model description relevant unit remark pdm kit mxd-a38k2a 8~12hp dvms option mxd-a58k2a 14~22hp humidifier mvo-va050100 500cmh - option mvo-va100100 1000cmh s-plasma ion kit msd-can1 4way cassette - option msd-ean1 erv-plus motion ...
Page 16
16 samsung electronics ■ necessary tools 3. Disassembly and reassembly item remark +screw driver monkey spanner –screw driver nipper electric motion driver l-wrench.
Page 17
Disassembly and reassembly samsung electronics 17 no parts procedure remark 1 panel 1) pull two levers below samsung logo to open the grille. 2) detach the safety clip and white link from the panel. 3) remove the 2 fixed screws to remove the control-box cover.(use +screw driver) 4) remove the 4 conn...
Page 18
Disassembly and reassembly 18 samsung electronics no parts procedure remark 6) rdisassemble the bolts that are assembled with the indoor unit at the 4 panel corners. 7) ppress the steel hangers at both sides of the panel inwards, and rotate them 90 degrees to remove it from the indoor unit’s hock. R...
Page 19
Disassembly and reassembly samsung electronics 19 no parts procedure remark 3 bell-mouth 1) unscrew the screw fixed on the bell-mouth. (use +screw driver) 2) push the bell-mouth in the direction opposite to where it’s installed on the control-box to remove it. 4 drain pan 1) unscrew the screws on th...
Page 20
Disassembly and reassembly 20 samsung electronics no parts procedure remark 1 panel 1) pull both hooks and take the grille downward. Two safety clips are mounted to the front grille to prevent it from dropping. 2) detach the safity clip and take up the grille. 3) remove the 2 fixed screws to remove ...
Page 21
Disassembly and reassembly samsung electronics 21 no parts procedure remark 1 panel 5) push the 4 panel corners and cover downwards to remove it. 6) disassemble the bolts that are assembled with the indoor unit at the 4 panel corners. 7) press the hangers at both sides of the panel inwards, to remov...
Page 22
Disassembly and reassembly 22 samsung electronics no parts procedure remark 2 control-box 2) unscrew the 2 fixed screws on both sides of the control box, and disassemble the control box from the indoor unit. (use +screw driver) 3 bell-mouth 1) unscrew the screw fixed on the bell-mouth. (use +screw d...
Page 23
Disassembly and reassembly samsung electronics 23 no parts procedure remark 4 drain pan 1) remove the drain pan from the indoor unit..
Page 24: 4. Troubleshooting
24 samsung electronics 4. Troubleshooting 4-1 check-up window description no. Function no. Function 1 cn22 download (pc) (smw200-10 black) 6 set up the number of connected outdoor units 2 micom. Download (as-pro) (smw200-07p white) 7 for checking indoor unit communication (yw396-02p red) 3 error dis...
Page 25
Troubleshooting samsung electronics 25 4-2 service operation 4-2-1 special operation ► key input of the outdoor unit when the service enters the operation mode. K1 (number of press) key operation display on segment 1 time refrigerant charging in heating mode k, 1, blank, blank 2 times trial operatio...
Page 26
Troubleshooting 26 samsung electronics ■ commissioning ► after initial installation, stable operation for a certain period of time limited to operation conditions. Cooling heating method of entry k2 tact switch twice k2 tact switch twice compressor normal operation, but the maximum frequency limit (...
Page 27
Troubleshooting samsung electronics 27 ■ heating pump out ► operation for the repair of the individual outdoor unit, the outdoor unit refrigerant emissions to the indoor part. ► liquid pipe service valve and the gas pipe service valve operation, the operator manually need to close. ► observe low pre...
Page 28
Troubleshooting 28 samsung electronics ■ vacuum operation ► operation to facilitate vacuum to open the valve after the outdoor unit repair. ■ piping inspection operation ► operation mode to check the status of the piping between the mcu and the indoor unit. ► heat pump model : outdoor temperature is...
Page 29
Troubleshooting samsung electronics 29 ■ forced defrost operation ► forced defrost operation : is operation when frost formation occurs in the outdoor. (when carried out the service) ■ forced oil recovery operation ► forced oil recovery operation : oil recovery in the outdoor unit for the purpose of...
Page 30
Troubleshooting 30 samsung electronics 4-3 troubleshooting 4-3-1 setting option setup method 4-3-1-1 pcb option code input method ▶ set the indoor unit address and installation option with remote controller option. Set the each option separately since you cannot set the address setting and indoor un...
Page 31
Troubleshooting samsung electronics 31 ■ the procedure of setting option option setting status 1. Setting seg2, seg3 option press low fan button( ∨ ) to enter seg2 value. Press high fan button( ∧ ) to enter seg3 value. Each time you press the button, → → … → will be selected in rotation. 2. Setting ...
Page 32
Troubleshooting 32 samsung electronics ■ the procedure of setting option (cont.) option setting status 11. Setting seg14, seg15 option press low fan button( ∨ ) to enter seg14 value. Press high fan button( ∧ ) to enter seg15 value. Each time you press the button, → → … → will be selected in rotation...
Page 33
Troubleshooting samsung electronics 33 step 3 check the option you have set after setting option, press button to check whether the option code you input is correct or not. Step 4 input option press operation button with the direction of remote control for set. For the correct option setting, you mu...
Page 34
Troubleshooting 34 samsung electronics - setting an indoor unit address and installation option ■ setting an indoor unit installation option (suitable for the condition of each installation location ) 1. Check whether power is supplied or not. - when the indoor unit is not plugged in, there should b...
Page 35
Troubleshooting samsung electronics 35 option seg1 seg2 seg3 seg4 seg5 seg6 explanation page mode use of robot cleaning use of external temperature sensor use of central control fan rpm compensation remote controller display indication and details indication details indication details indication det...
Page 36
Troubleshooting 36 samsung electronics installation options for the 02 series • 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...
Page 37
Troubleshooting samsung electronics 37 installation options for the 02 series (detailed) option no. For an indoor unit address: 02xxxx-1xxxxx-2xxxxx-3xxxxx option seg1 seg2 seg3 seg4 seg5 seg6 function page mode - use of external temperature sensor / minimizing fan operation when thermostat is off u...
Page 38
Troubleshooting 38 samsung electronics option seg13 seg14 seg15 seg16 seg17 seg18 function page use of external control setting the output of external control / external heater on or off signal s-plasma ion buzzer control maximum filter usage time indication and details indication details indication...
Page 39
Troubleshooting samsung electronics 39 indication and details 3 3 indoor 3 3 default (*5) use (*6) 1 oil return or noise decreasing in defrost mode 2 turn out in 60 min. Without motion 2 38 seconds 4 indoor 4 4 2 °c use (*6) 3 turn out in 120 min. Without motion 5 5 °c use (*6) 5 turn out in 180 min...
Page 40
Troubleshooting 40 samsung electronics installation options for the 05 series seg1 seg2 seg3 seg4 seg5 seg6 0 5 use of the hr-specific auto changeover function in the auto mode (when setting seg3) offset for the heating reference temperature (when setting seg3) offset for the cooling reference tempe...
Page 41
Troubleshooting samsung electronics 41 4-3-2 option items item model seg static pressure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 wind free 4way am045nn4deh/** am045nn4deh/** 0 1 4 0 4 f 1 9 5 0 9 7 2 0 2 d 2 d 3 3 0 0 0 0 am056nn4deh/** am056nn4deh/** 0 1 4 0 4 f 1 9 5 0 a 7 2...
Page 42
Troubleshooting 42 samsung electronics 4-3-3 what to check before diagnosis 4-3-3-1 lamp combination expression method display (cassette type indoor unit) - global 4way cassette type ■ error detection and restart ● when error occurs during operation, indicate a problem with led flashes, and no other...
Page 43
Troubleshooting samsung electronics 43 ■ led lamp display with error detection (cont.) - global 4way cassette type abnormal condition error code led display operation defrost timer filter eeprom option error e163 error due to incompatible indoor unit e164 : on : flickering : off - if you turn off th...
Page 44
Troubleshooting 44 samsung electronics 4-3-4 number display method (outdoor unit, mcu, cable remote control, wall-mount, etc.) ■ how to display integrated error code ► meanings of first alphabetical character / number of error code ► order of error display classification error display method display...
Page 45
Troubleshooting samsung electronics 45 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 (when 2 or more ...
Page 46
Troubleshooting 46 samsung electronics ■ diagnosis and adjustment (error code) ► error code related to the communications / settings / hw (cont.) code explanation e-211 when single indoor unit uses 2 mcu ports that are not in series e-212 if the rotary switch (on the mcu) for address setting of the ...
Page 47
Troubleshooting samsung electronics 47 ■ diagnosis and adjustment (error code) ► error code related to the communications / settings / hw (cont.) code explanation e-311 error on temperature sensor of double layer pipe/liquid pipe(sub heat exchanger) (short or open) e-321 error on evi (esc) in temper...
Page 48
Troubleshooting 48 samsung electronics ■ diagnosis and adjustment (error code) ► error code related to the communications / settings / hw (cont.) code explanation e-447 motor wire of fan1 is not connected e-448 lock error on fan1 e-452 error due to zpc detection circuit problem or power failure e-45...
Page 49
Troubleshooting samsung electronics 49 ■ diagnosis and adjustment (error code) ► error code related to the communications / settings / hw (cont.) code explanation e-702 error due to closed eev of indoor unit (1st detection) e-703 error due to opened eev of indoor unit (1st detection) e-901 error on ...
Page 50
Troubleshooting 50 samsung electronics 4-4 appropriate measures for different symptom 4-4-1 outdoor unit operation flow commissioning if it is not running - up is displayed prior to starting the air conditioning operation after the ini- tial installation and automatic commissioning is carried out. T...
Page 51
Troubleshooting samsung electronics 51 4-4-2 main pcb has no power phenomenon outdoor unit display main pcb has no power phenomenon (7-seg does not blink) judgment method hub pcb power and connection wire to detect. Cause of problem ∙ hub pcb connector wire defects and the connection is not. ∙ main ...
Page 52
Troubleshooting 52 samsung electronics 4-4-3 indoor unit room sensor error (open/short) 1. How to check yes yes is indoor room temperature sensor connector dislocated? At that time, is the resistance value significantly deviated from the temp. Table? After separating indoor room temperature sensor c...
Page 53
Troubleshooting samsung electronics 53 4-4-4 indoor unit evap in sensor error (open/short) 1. How to check is indoor evap in sensor connector separated from the pcb? At that time, is the resistance value significantly deviated from the temp. Table? After separating indoor evap in sensor connector fr...
Page 54
Troubleshooting 54 samsung electronics 4-4-5 indoor evap out sensor error (open/short) 1. How to check is indoor evap out sensor connector separated from the pcb? At that time, is the resistance value significantly deviated from the temp. Table? After separating indoor evap out sensor connector from...
Page 55
Troubleshooting samsung electronics 55 4-4-6 indoor heat exchanger's evap in sensor dislocation error 1. How to diagnose 1) during cooling operation 2) during heating operation tcond, out - tair, out > 3°c ok tair, in - teva, out > 4°c no tair, in - teva, out > 4°c ok compressor in operation & indoo...
Page 56
Troubleshooting 56 samsung electronics 4-4-7 indoor heat exchanger's eva out sensor dislocation error (open/short) 1. How to diagnose 1) during cooling operation 2) during heating operation tcond, out - tair, out > 3°c ok tair, in - teva, out > 4°c no tair, in - teva, out > 4°c ok compressor in oper...
Page 57
Troubleshooting samsung electronics 57 4-4-8 imultaneous indoor heat exchanger's eva in, out sensor dislocation error (open/short) 1. How to diagnose 1) during cooling operation tcond, out - tair, out > 3°c ok tair, in - teva, out > 4°c no tair, in - teva, out > 4°c no compressor in operation & indo...
Page 58
Troubleshooting 58 samsung electronics 4-4-9 electronic expansion valve opening malfunction (2nd stage) - 1. How to diagnose - during cooling operation, the temperature of the inlet or outlet of stopped heat exchanger is kept lower than 0˚c for more than 20 minutes without cessation. - hydro unit : ...
Page 59
Troubleshooting samsung electronics 59 4-4-10 breakdown of eev (2nd) 1. How to diagnose detect only on cooling operation. (no detection during heating operation.) during cooling operation, the temperature of the inlet or outlet ducts of heat exchanger is kept below 0˚c for more than 20 minutes witho...
Page 60
Troubleshooting 60 samsung electronics 4-4-11 problem with eev closure (2nd) 1. How to diagnose 1) during cooling operation(each of the below conditions have to be met for at least 20 minutes.) 2) during heating operation (must satisfy all conditions below) 2) • when more than 2 indoor units are on ...
Page 61
Troubleshooting samsung electronics 61 4-4-12 eev(electronic expansion valve) opening malfunction (2nd stage) 1. How to diagnose detect only on cooling operation. (no detection during heating operation.) during cooling operation, the temperature of the inlet or outlet of stopped heat exchanger is ke...
Page 62
Troubleshooting 62 samsung electronics 4-4-13 : eev(electronic expansion valve) closure malfunction (2nd stage) 1. How to diagnose 1) during cooling operation. (each of the below conditions have to be met for at least 20 minutes.) tcond,out - tair,out > 3 ℃ ok tair,in - teva,in > 4 ℃ no tair,in - te...
Page 63
Troubleshooting samsung electronics 63 4-4-14 : detection of floating switch of indoor unit's drain pump 1. How to check no no no no no yes yes yes yes yes yes when checking the resistance value of both terminals after disconnecting a floating sensor connector linked to an indoor unit pcb, is resist...
Page 64
Troubleshooting 64 samsung electronics 4-4-15 the operational error of indoor unit's fan motor 1. How to diagnose 1) occurs when rpm valve fails to feedback to micom at a pid control-type fan motor 2. How to check 1) check hall ic connector that carries out feedback of rpm value. 2) if a fan motor o...
Page 65
Troubleshooting samsung electronics 65 4-4-16 mixed operation error (only applicable to heat pump model/not to hr model) ● mixed operation error is applicable only to heat pump model and not to hr model. ● mixed operation error is not due to a product problem but is displayed when the operational mo...
Page 66
Troubleshooting 66 samsung electronics 4-4-17 eeprom error yes are there any problems such as short or dewetting between eeprom pin? If you restart after reentering model options and power reset, does the error occur again? Replace pcb yes no normal operation no 1. How to check check the location of...
Page 67
Troubleshooting samsung electronics 67 outdoor unit display indoor unit display operation timer criteria • display number type of indoor unit – e163 occurs, lamp type – all lamps flash cause of problem • missed or erroneous input of remote controller options 4-4-18 option error of the remote control...
Page 68
Troubleshooting 68 samsung electronics 4-4-20 simultaneous opening of cooling/heating mcu sol valves 1st/2nd ● during the first detection, as the system restarts after making an automatic stop to check a problem with the system ● during the second detection, please refer to the following check-up me...
Page 69
Troubleshooting samsung electronics 69 4-4-21 error due to incorrect indoor unit power/communication cable connection ● check for disconnected line after turning off the main power. Outdoor unit display indoor unit display wall mount led displays 18 o c 21 o c reservation 24 o c 27 o c criteria • ch...
Page 70
Troubleshooting 70 samsung electronics 4-4-22 spi feedback error 1. How to check 예 is the spi connector of an indoor unit separated from pcb? Connect the connector to pcb and reoperate yes no replace main pcb can you measure 12v from #1, #4 power with spi connector being connected? Replace spi no ye...
Page 71
Troubleshooting samsung electronics 71 4-4-23 outdoor unit pipe inspection error 1. Judgment method ● check if the indoor address settings are the same for the address of the indoor units connected to each port of the mcu and the address of the indoor units of the relevant mcu ports. ● check if the ...
Page 72
Troubleshooting 72 samsung electronics 4-4-24 communication error between indoor and outdoor units during tracking 1. Cause of problem yes yes indoor unit installation quantity setup switch of outdoor unit compare and check the set value and the actual number of indoor units installed. Press the res...
Page 73
Troubleshooting samsung electronics 73 4-4-25 communication error between indoor and outdoor units after tracking 1. Cause of problem press the reset key (k3) of the outdoor unit pcb and check the display module. Is the voltage between the 2 cables a square wave with dc±0.7v or more as shown in the ...
Page 74
Troubleshooting 74 samsung electronics 4-4-26 communication error between main and sub unit of outdoor unit or between outdoor units reset error (key 3) check the outdoor unit with error. (u200, u201, u202, u203) is the power supply normal? 15v, 5v check wiring of outdoor unit communication cable. C...
Page 75
Troubleshooting samsung electronics 75 4-4-27 communication error between mcu and outdoor unit 1. Inspection method yes yes mcu installation quantity setup switch for outdoor unit pcb compare and check the set values and the actual mcu installation quantity. Press the reset key (k3) of the outdoor u...
Page 76
Troubleshooting 76 samsung electronics 4-4-28 internal communication error of the outdoor unit c-box 1. Cause of problem replace main pcb restart operation after connecting the inverter pcb2 cn31(when the comp. Applied one : inverter pcb1) connector. (check the 3, 4 pin short) * service after turn o...
Page 77
Troubleshooting samsung electronics 77 4-4-29 internal pcb communication error of the outdoor unit c-box 1. Cause of problem replace hub pcb replace fan pcb (fan pcb tx part : breakage) replace connection wire check the connection status (cn12 connector) fan pcb cn13 connection no no no yes yes yes ...
Page 78
Troubleshooting 78 samsung electronics 4-4-30 communication error between mcu and outdoor unit after tracking is completed 1. Inspection method yes press the pcb reset key (k3) of the outdoor unit and check the display module. Is the voltage between the 2 cables a square wave with dc±0.7v or more? I...
Page 79
Troubleshooting samsung electronics 79 4-4-31 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 th...
Page 80
Troubleshooting 80 samsung electronics 4-4-32 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 butto...
Page 81
Troubleshooting samsung electronics 81 4-4-33 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...
Page 82
Troubleshooting 82 samsung electronics 4-4-34 setup error for mcu branch part – setup error for mcu quantity used 1. Inspection method : re-check the mcu quantity setup switch from the outdoor unit. Check for overlaps in each mcu address setup switch. To use, reset by pressing the k3 button of the o...
Page 83
Troubleshooting samsung electronics 83 4-4-35 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 mc...
Page 84
Troubleshooting 84 samsung electronics 4-4-36 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 t...
Page 85
Troubleshooting samsung electronics 85 4-4-37 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'...
Page 86
Troubleshooting 86 samsung electronics 4-4-38 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 u...
Page 87
Troubleshooting samsung electronics 87 4-4-39 outdoor temperature sensor error 1. Cause of problem did the outside temperature sensor connector break away from the pcb? Did the resistance value significantly stray from the following temperature table? After separating the outdoor temperature sensor ...
Page 88
Troubleshooting 88 samsung electronics 4-4-40 outdoor temperature dislocation error 1. How to check is an outdoor temperature sensor connector dislocated from the pcb? Does the resistance value greatly deviate from the temperature table to the next? After separating the outdoor temperature sensor co...
Page 89
Troubleshooting samsung electronics 89 1. Cause of problem 4-4-41 cond out temperature sensor error (open/short) yes did the outdoor cond out sensor connector break away from the pcb? Did the resistance value significantly stray from the following temperature table? After separating the outdoor cond...
Page 90
Troubleshooting 90 samsung electronics 4-4-42 outdoor cond out sensor breakaway error 2. Cause of problem 1. Judgment method 1) no inspection for cooling operation. 2) for heating operation (each of the conditions below needs to be satisfied for more than 20 minutes.) high pressure average > 25kg/cm...
Page 91
Troubleshooting samsung electronics 91 4-4-43 digital compressor discharge temperature sensor error (open/short) yes did the connector for the outdoor digital compressor discharge temperature sensor break away from the pcb? Did the resistance value significantly stray from the following temperature ...
Page 92
Troubleshooting 92 samsung electronics 4-4-44 constant rate compressor discharge temperature sensor error (open/short) 1. Inspection method did the connector for the outdoor constant rate compressor discharge temperature sensor break away from the pcb? Did the resistance value significantly stray fr...
Page 93
Troubleshooting samsung electronics 93 4-4-45 compressor discharge or top 1/2 temperature sensor error 1. Cause of problem yes did the compressor discharge or top temperature sensor connector break away from the pcb? Did the resistance value significantly stray from the following temperature table? ...
Page 94
Troubleshooting 94 samsung electronics 4-4-46 : dislocation error of compressor sump temperature (oil temperature) sensor 1. How to diagnose 1) if the sump temperature right before the start of compressor = tsump.Ini, current compressor's sump temp =tsump. Real, when the difference between tsump.Ini...
Page 95
Troubleshooting samsung electronics 95 4-4-47 : suction temperature sensor breakaway error 1. Cause of problem complete is suction sensor and sensor holder accurately attached? Is suction sensor resistance value reasonable? (refer to e231 ) defective sensor : replace sensor no re-insert the sensor. ...
Page 96
Troubleshooting 96 samsung electronics 1. Inspection method 4-4-48 sump temperature sensor error (open/short) did the connector for the outdoor sump sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the connector of the outdoo...
Page 97
Troubleshooting samsung electronics 97 4-4-49 high pressure sensor error (open/short) 1. High pressure sensor open/short error determination method 1) identifies from when power is supplied or 2 minutes after reset, and only when set is stopped. 2) an open/short error will occur if the input voltage...
Page 98
Troubleshooting 98 samsung electronics 4-4-50 low pressure sensor error (open/short) 1. Low pressure sensor open/short error determination method 1) identifies from when power is supplied or 2 minutes after reset, and only when set is stopped. 2) an open/short error will occur if the input voltage s...
Page 99
Troubleshooting samsung electronics 99 4-4-51 suction temperature sensor error (open/short) 1. Cause of problem did the connector for the outdoor suction sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the connector of the o...
Page 100
Troubleshooting 100 samsung electronics 4-4-52 liquid pipe temperature sensor error (open/short) 1. Cause of problem did the connector for the liquid pipe temperature sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the conne...
Page 101
Troubleshooting samsung electronics 101 4-4-53 evi in temperature sensor error (open/short) 1. Cause of problem did the connector for the evi in temperature sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the connector of th...
Page 102
Troubleshooting 102 samsung electronics 4-4-54 evi out temperature sensor error (open/short) 1. Cause of problem did the connector for the evi out temperature sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the connector of ...
Page 103
Troubleshooting samsung electronics 103 4-4-55 suction-2 temperature sensor error (open/short) 1. Inspection method yes did the connector for the suction-2 sensor break away from the pcb? Did the resistance value significantly stray from the following temperature table? Separate the connector of the...
Page 104
Troubleshooting 104 samsung electronics 4-4-56 : comp. Down due to high pressure protection control is the s-net estimated value and the manifold gauge value in range? Are the indoor unit and outdoor unit eev normally operating? Are there any blockage inside the pipe? (filter etc.) check the refrige...
Page 105
Troubleshooting samsung electronics 105 4-4-57 : comp. Down due to low pressure protection control is the s-net estimated value and the manifold gauge value in range? Are the indoor unit and outdoor unit eev normally operating? Are there any blockage inside the pipe? (filter etc.) check the refriger...
Page 106
Troubleshooting 106 samsung electronics 1. Inspection method 4-4-58 sump sensor error due to protection control no is the sensor connector properly connected to pcb? Is the sensor displaying the temperature normally? Is the sensor properly attached to the sensor holder below the compressor? Refer to...
Page 107
Troubleshooting samsung electronics 107 4-4-59 : comp. Down due to compressor discharge temperature sensor 1. Cause of problem is the resistance value normal for the compressor discharge temperature sensor? (refer to e251) commissioning are all service valves open? Are the indoor unit and outdoor un...
Page 108
Troubleshooting 108 samsung electronics 4-4-60 3-phase input wiring error 1. Cause of problem replace inverter pcb power off yes yes no yes did the main terminal block and power r, s, t, n is connected properly? Power box terminal : check the phase-to-phase connection 380v of the r, s, t and then re...
Page 109
Troubleshooting samsung electronics 109 4-4-61 : comp. Down by compression ratio control 1. Cause of problem yes are the 4way valve normally operating? Are the indoor unit and outdoor unit eev normally operating? Is current of compressor normally? Complete commissioning replace defective sensor chec...
Page 110
Troubleshooting 110 samsung electronics 4-4-62 evi eev open error 1. Cause of problem check the refrigerant no reconnect connector is evi eev connector accurately connected to pcb? Yes no reassemble coil is eev coil accurately installed? Yes breakdown replace intercooler check the intercooler leakag...
Page 111
Troubleshooting samsung electronics 111 4-4-63 refrigerant leakage error ■ low-pressure sensor open/short error determination method 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 standard ranges of 0...
Page 112
Troubleshooting 112 samsung electronics 4-4-64 , : prohibition of the operation of compressor due to ooutdoor temperature 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 tempera- ture range so please refer to t...
Page 113
Troubleshooting samsung electronics 113 4-4-65 high pressure standard not met before air conditioning (inability to re-operate) 1. Cause of problem is high pressure sensor connector accurately connected to pcb? Replace high pressure sensor is there any refrigerant leakage or recharging problem insid...
Page 114
Troubleshooting 114 samsung electronics 1. Judgment method tini = sump temperature when entering the ch operation delay condition tlast= sump temperature when maintaining ch operation delay for two hours outside air temperature sensor value: outside air temperature when maintaining ch operation dela...
Page 115
Troubleshooting samsung electronics 115 4-4-67 fan starting error outdoor unit display (fan pcb(fan1)) (fan pcb(fan2)) judgment method ∙ startup, and then if the speed increase is not normally. ∙ detected by h/w or s/w cause of problem ∙ compressor connection error ∙ defective compressor ∙ defective...
Page 116
Troubleshooting 116 samsung electronics 4-4-68 fan lock error power on and then commissioning power off replace fan pcb yes did the error occurs? End of service no yes did you check the foreign objects on the fan rotary wing? Remove the foreign objects and restart. No yes fan do rotate by hand? Repl...
Page 117
Troubleshooting samsung electronics 117 outdoor unit display indoor unit display operation timer criteria ∙ momentary stop of compressor due to momentary blackout. Cause of problem ∙ momentary stop of compressor due to momentary blackout. 4-4-69 momentary blackout error 1. Precautions : replace hub ...
Page 118
Troubleshooting 118 samsung electronics 4-4-70 outdoor fan motor overheating power off / power restart replace fan motor yes did the error occurs? End of service no yes connection wire of fan motor did confirmation? (verify that the wire folded, or the connection is detached.) check the connecting w...
Page 119
Troubleshooting samsung electronics 119 4-4-71 outdoor unit fan motor rpm error 1. Inspection method no yes no yes no yes no yes connect connector as normal. Is connection for feedback connector normal? Re-connect connector. Is the connection for the fan connector normal? Re-connect connector. Is co...
Page 120
Troubleshooting 120 samsung electronics 4-4-72 fan ipm overheat error power off yes did check the foreign objects between the heat sink pin? Remove foreign objects *cold heat sink assembly defect occurs. No yes is the bolt of the heat sink fully tightened? Tighten bolt no yes did check the foreign o...
Page 121
Troubleshooting samsung electronics 121 4-4-73 over-voltage error of an outdoor fan motor 1. How to check 1) check if outdoor fan motor rotates or is locked 2) if it is not locked, the above error occurs due to overload and signals by abnormal operation, and it indicates the overload status. Thus, i...
Page 122
Troubleshooting 122 samsung electronics 4-4-75 : compressor excess current error 1. Cause of problem is the ct sensor connector resistance normal? Are all the ct values 0 when the compressor is stopped? Is the ct value measured at 20a or more during the operation? Is the measured value from the sepa...
Page 123
Troubleshooting samsung electronics 123 4-4-76 compressor starting error outdoor unit display (inverter1 pcb) (inverter2 pcb) judgment method ∙ startup, and then if the speed increase is not normally. ∙ detected by h/w or s/w. Cause of problem ∙ compressor connection error ∙ defective compressor ∙ d...
Page 124
Troubleshooting 124 samsung electronics 4-4-77 inverter overcurrent error outdoor unit display (inverter1 pcb) (inverter2 pcb) judgment method ∙ will occur if the overcurrent flowing in the ipm. ∙ detected by h/w or s/w cause of problem ∙ installation defective ∙ comp. Defective ∙ pcb defective ∙ co...
Page 125
Troubleshooting samsung electronics 125 4-4-78 overvoltage / low voltage error outdoor unit display (inverter1 pcb) (inverter2 pcb) judgment method ∙ n-phase wiring error and emi fuse short. ∙ dc-link overvoltage / low voltage occurs. Cause of problem ∙ check the input wiring ∙ emi fuse short power ...
Page 126
Troubleshooting 126 samsung electronics 4-4-79 dc link voltage sensor error outdoor unit display (inverter1 pcb) (inverter2 pcb) (outdoor fan 1 pcb) (outdoor fan 2 pcb) judgment method ∙ dc voltage detection : judged as an error if the detected value is more than 2.8v or 0.2v less than cause of prob...
Page 127
Troubleshooting samsung electronics 127 1. Inspection method 4-4-80 liquid compression prevention control are the sump sensor and the discharge sensor are properly connected/attached? Check the failure in liquid bypass valve and 4way valve. Check the normal eev operation of the main eev evi. Check a...
Page 128
Troubleshooting 128 samsung electronics 4-4-81 fan motor overcurrent error outdoor unit display (fan pcb(fan1)) (fan pcb(fan2)) judgment method ∙ occurs when overcurrent flows in the ipm. ∙ detected by h/w or s/w cause of problem ∙ installation error ∙ defective comp ∙ defective pcb ∙ connector erro...
Page 129
Troubleshooting samsung electronics 129 4-4-82 input / output current sensor error outdoor unit display inverter1 pcb(input current sensor) inverter2 pcb(input current sensor) inverter1 pcb(output current sensor) inverter 2 pcb(output current sensor) outdoor fan pcb (fan1 output current sensor) outd...
Page 130
Troubleshooting 130 samsung electronics 4-4-83 outdoor fan pcb overvoltage / low voltage error outdoor unit display judgment method ∙ n-phase wiring error and emi fuse short. ∙ dc-link overvoltage / low voltage occurs. Cause of problem ∙ check the input wiring ∙ emi fuse short power off yes is inver...
Page 131
Troubleshooting samsung electronics 131 4-4-84 hall ic(fan) error 1. Cause of problem replace fan pcb restart when the error is repeated, replace the fan motor. End of service no yes yes did the error occurs? Check the connecting wire and restart it. No yes connection wire of hall ic did confirmatio...
Page 132
Troubleshooting 132 samsung electronics 4-4-85 inverter overheat error outdoor unit display (inverter1 pcb) (inverter2 pcb) judgment method ∙ igbt module internal temperature : 105°c more than (e500, e400) cause of problem ∙ cooling pin and the igbt junction part assembly defective. ∙ refrigerant co...
Page 133
Troubleshooting samsung electronics 133 4-4-86 model mismatching of indoor unit. Outdoor unit display judgment method ∙ prior to july 2011, if the software version of the indoor unit. ∙ prior to july 2011, if the software version of the indoor unit. Cause of problem ∙ check the software version of t...
Page 134
Troubleshooting 134 samsung electronics 4-4-87 breakdown of an eev(1 st ) 1. How to diagnose detect only on cooling operation. (no detection during heating operation.) during cooling operation, the temperature of the inlet or outlet ducts of heat exchanger is kept lower than 0˚c for more than 20 min...
Page 135
Troubleshooting samsung electronics 135 4-4-87 breakdown of an eev closure 1. How to diagnose 1) during cooling operation (it must satisfy each of the following conditions for over 20minutes.) 2) during heating operation (it must satisfy each of the following conditions for over 20minutes.) ∙ when m...
Page 136
Troubleshooting 136 samsung electronics 4-4-88 electronic expansion valve closing malfunction (2nd stage) indoor unit display cause of problem ×(operation) (reservation) (blast) (filter) ×(defrost) • faulty indoor unit electronic expansion valve action (valve will not open) • address setup error in ...
Page 137
Troubleshooting samsung electronics 137 4-4-89 electronic expansion valve opening malfunction (2nd stage) indoor unit display cause of problem ×(operation) (reservation) (blast) (filter) ×(defrost) • faulty indoor unit electronic expansion valve action (refrigerant will leak into the stopped indoor ...
Page 138
Troubleshooting 138 samsung electronics 70 60 50 40 30 20 10 0 -10 2.2 3.0 4.2 5.8 8.3 12.1 18.0 27.3 43.0 did the connector for water in temperature sensor breakaway from the pcb? Restart operation after connecting the connector to pcb. Yes no yes no temperature( ℃ ) resistance(kΩ) resistance value...
Page 139
Troubleshooting samsung electronics 139 70 60 50 40 30 20 10 0 -10 2.2 3.0 4.2 5.8 8.3 12.1 18.0 27.3 43.0 did the connector for water out temperature sensor breakaway from the pcb? Restart operation after connecting the connector to pcb. Yes no yes no temperature( ℃ ) resistance(kΩ) resistance valu...
Page 140
Troubleshooting 140 samsung electronics 70 60 50 40 30 20 10 0 -10 2.2 3.0 4.2 5.8 8.3 12.1 18.0 27.3 43.0 did the connector for water tank temperature sensor breakaway from the pcb? Restart operation after connecting the connector to pcb. Yes no yes no temperature( ℃ ) resistance(kΩ) separate the c...
Page 141
Troubleshooting samsung electronics 141 check the circulation water flow. Does circulation water flow maintain at least the recommended flow? Check the piping system of circulation water. (pump, strainer, valves) check the water out temperature of circulation water. Is water out temperature more tha...
Page 142
Troubleshooting 142 samsung electronics check the circulation water flow. Does circulation water flow maintain at least the recommended flow? Check the piping system of circulation water. (pump, strainer, valves) check the water out temperature of circulation water. Is water out temperature more tha...
Page 143
Troubleshooting samsung electronics 143 70 60 50 40 30 20 10 0 -10 2.2 3.0 4.2 5.8 8.3 12.1 18.0 27.3 43.0 check the mounting status of water out temperature sensor. Is water out temperature sensor and sensor holder accurately mounting? Is water out temperature sensor resistance value normal? (refer...
Page 144
Troubleshooting 144 samsung electronics check the connection status of flow switch. Is flow switch and pcb accurately connected? Connect the flow switch and then restart it. Check the junction point signal of paddle operation after the flow switch disassembly. Junction point are formed? Replace flow...
Page 145
Troubleshooting samsung electronics 145 23 24 25 26 c n h n 24v themostat check the wiring of thermostat. Is thermostat at the same time 230v and 24v wiring? Only one wiring of 230v or 24v. Check the cooling / heating wiring has been duplicates to each thermostat. Cooling heating 19 20 21 22 c n h n...
Page 146
Troubleshooting 146 samsung electronics indoor unit display cause of problem • dc fan connector defects and connection is not • dc fan motor defective. • control kit pba defective. Criteria • refer to the judgment method below. Outdoor unit display ↔ xxx (xxx : address of indoor unit that error occu...
Page 147
Troubleshooting samsung electronics 147 indoor unit display cause of problem • water tank sensor defective criteria • refer to the judgement method below. Outdoor unit display ↔ xxx (xxx : address of indoor unit that error occurred) 4-4-99 water tank sensor defective 1. Inspection method replace the...
Page 148
148 samsung electronics 5. Pcb diagram and parts list 5-1 indoor unit 5-1-1 wind-free 4way cassette type, mini 4way cassette - main pba (am045/056/071/090/112/128/140nn4deh*) (am015/022/028/036/045/056/060nnndeh*) (am009/012/018/024/036/048nn4dch/**) (am005/007/009/012/018/020nnndch/**) 1 2 3 4 5 6 ...
Page 149
Pcb diagram and parts list samsung electronics 149 ① #1: ac power(l) #2: ac power(n) ② #1: gnd ③ #1: power(n) #3 : ssr motor power(l) #5 : power(n) ④ #1: fuse check signal #2: gnd ⑤ #1 : room temperature sensor #2 : gnd ⑥ #1: dc12v #2: led_0 #3: led_1 #4: led_2 #5: led_3 #6: led_4 #7: led_5 #8: remo...
Page 150
Pcb diagram and parts list 150 samsung electronics ① #1: dc12v #2: led_operation #3: led_defrost #4: led_timer #5: - #6: led_filter #7: - #8: remocon signal out #9 : panel select #10: remocon signal in #11: gnd #12: dc5v #13: - cn01-display wind-free 4way cassette type, mini 4way cassette (cont.) - ...
Page 151: 6. Wiring Diagram
Samsung electronics 151 6. Wiring diagram 6-1 indoor 6-1-1 wind-free 4way cassette type □ am045/056/071/090/112/128/140nn4deh/** am009/012/018/024/036/048nn4dch/** am005/007/009/012/018/020nnndch/** this document can not be used without samsung’s authorization. Notes 1. This wiring diagram applies o...
Page 152: 7. Reference Sheet
152 samsung electronics 7. Reference sheet 7-1 index for model name 7-1-1 indoor unit model code classification am dvm ae ehs version e 2012 f 2013 h 2014 j 2015 k 2016 m 2017 n 2018 product type x outdoor unit n indoor unit 045 eu n 4 d e h am f capacity x 1/10 hp (3 digits) product notation 1 1 wa...
Page 153
Samsung electronics 153 ※ model name for the column/bundle packaging is “~s”. Model code ★ only display the global 4 way with korean/ english k separator. H k h a h 1 h n h c h p h 4n h b product design classification p panel product type c cst product classification 1m small-size 1 way cst 1n middl...
Page 154
154 samsung electronics 1. If the pressure is kept low for a long time to completely replenish the refrigerant of the pipe during the pump-down, then the compressor may be damaged. Therefore, close the valve immediately if the pressure goes below 2kg/cm2.G. 2. If the length of the pipe is too long o...
Page 155
Samsung electronics 155 1. Prepare a rechargeable exclusive refrigerant container, a scale, and a manifold gauge. 2. Check the amount of refrigerant remaining in the overall system at the time. 3. Connect the refrigerant container to the outdoor unit as shown in the following figure, and operate onl...
Page 156
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. February. 2018. Printed in korea. Code no. Ac-00211e_1.