Samsung AC100MNTCEH/EU Service Manual Download Page 61

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5-2

Samsung Electronics

①

#1 : L
#2 : NOT USED
#3 : N

②

#1~2 : COMMUNICATION SIGNAL

③

#1 : DC 310V
#2 : NOT USED
#3 : GND
#4 : PWM SIGNAL
#5 : FEEDBACK SIGNAL

④

#1 : THERMAL FUSE SIGNAL
#2 : GND

⑤

#1~2 : GND
#3 : SPI CONTROL SIGNAL
#4 : NOT USED

⑥

#1 : DC 12V
#2~5 : LOUVER SIGNAL

⑦

#1~4 : EEV SIGNAL
#5~6 : DC 12V

⑧

#1 : OOM TEMPERATURE SENSOR

SIGNAL

#2 : GND

⑨

#1 : EVA IN TEMPERATURE SENSOR

SIGNAL

#2 : GND
#3 : EVA OUT TEMPERATURE SENSOR

SIGNAL

#4 : GND
#5 : DISCHARGE TEMPERATURE SENSOR

SIGNAL

#6 : GND

⑩

#1~3 : LED SIGNAL
#4 : REMOCON SIGNAL
#5 : GND
#6 : DC 5V
#7~8 : REMOCON SIGNAL
#9~11 : NOT USED

⑪

#1 : GND
#2 : NOT USED
#3 : DC 5V
#4~7 : EEPROM SIGNAL

⑫

#1~8 : DOWNLOAD SIGNAL
#9 : GND
#10~11 : DC 5V
#12~16 : DOWNLOAD SIGNAL
#17 : GND
#18~20 : DOWNLOAD SIGNAL

⑬

#1~2 : COMMUNICATION SIGNAL
#3~4 : SUB PBA SIGNAL
#5 : EXTERNAL CONTROL SIGNAL
#6 : COMP CHECK SIGNAL
#7 : ERROR CHECK SIGNAL
#8 : DC 5V
#9 : GND
#10 : DC 12V
#11~14 : COMMUNICATION SIGNAL

CNP101-POWER

CN303-COM1

CN701-BLDC FAN

CN140-FUSE CHECK

CN805-SPI

CN802-STEP UP/DOWN

CN801-EEV

CN401-ROOM

CN403-EVA IN/OUT/DIS

CN501-DISPLAY

CN201-EEPROM

CN302-DOWNLOAD

CN301-to 2WIRE SUB

Summary of Contents for AC100MNTCEH/EU

Page 1: ...MAIR CONDITIONER 1 Precautions 2 Product Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Wiring Diagram 7 Reference Sheet INDOOR UNIT Basic Model AQN36VFUAGM CV Model Code AC100MNTDEH EU AC100MNTCEH EU ...

Page 2: ... open short 4 14 4 3 3 Indoor FAN error 4 15 4 3 4 Communication error after finishing Tracking 4 16 4 3 5 Indoor unit float sensor error 4 17 4 3 6 EEPROM circuit failure 4 18 4 3 7 Outdoor unit is not powered on 4 19 4 4 Troubleshooting by symptoms 4 21 4 4 1 Communication error 4 21 4 4 2 Outdoor temperature sensor error 4 22 4 4 3 Outdoor Coil temperature sensor error 4 24 4 4 4 Outdoor Discha...

Page 3: ...t limit error 4 38 4 4 16 EEPROM error OTP error 4 39 4 4 17 AC zero cross signal error 4 40 4 4 18 Operation condition secession error 4 41 4 4 19 Capacity miss match error 4 42 4 4 20 Gas leak error 4 43 15 PCB Diagram 5 1 5 1 Indoor Unit 5 1 16 Wiring Diagram 6 1 6 1 Indoor Unit 6 1 7 Reference Sheet 7 1 7 1 Index for Model Name 7 1 7 2 Refrigerating Cycle Diagram 7 2 ...

Page 4: ...aused by tracking or short circuit Fasten the valve caps of service valves and charging valves of outdoor unit as much as possible using adjustable wrenches Check the status of the components assembly after repair service The status must be the same as before the repair service 1 2 Precautions related to static electricity and PL The PCB power supply block is susceptible to static electricity Ther...

Page 5: ...k Instruct end users to separate the batteries from the remote controllers and store them separately when the product is not used for long time Otherwise leakage from the dry cell may cause problems with the remote controller 1 4 Other precautions The pipes should have no leaks during installation and the compressor must be stopped before removing connecting pipes for pump down work Operating the ...

Page 6: ...ology it makes a room cool with highly energy saving and arises the efficiency of air conditioner Long Ambient Operation In Low Temperature It can arise the reliability and the capacity of the air conditioner especially operated in low temperature Eco friendly Product Lead Free ROHS WEEE Easy installation of ultra lightweight indoor unit 2 Product Specifications 2 1 The Feature of Product ...

Page 7: ...90 90 Operation current Cooling STD A 1 1 1 1 Heating STD A 1 1 1 1 Noise Cooling Heating Indoor unit In case of strongest air blow dB A 55 55 55 55 Refrigerant R410A g 3 000 2 900 Connecting Pipe Liquid mm 9 52 9 52 Gas mm 15 88 15 88 Additional Refrigerant R410A g m 50 25 Standard m 5 5 Extension length Total m 50 75 Extension length Elevation m 30 30 Option Code Product Option 01107F 193580 276...

Page 8: ...1 Essential Offer Indoor Unit Batteries for Remote Control 4301 000121 2 USER MANUAL DB68 06495A AC100MNTDEH EU DB68 06253A AC100MNTCEH EU 1 INSTALLATION MANUAL DB68 06496A AC100MNTDEH EU DB68 06254A AC100MNTCEH EU 1 Remote Control Holder DB61 06087A 1 M4 x 16 Tapped Screws 6002 000234 2 CARD WARRNATY DB68 02596B 1 2 3 Accessories ...

Page 9: ...Samsung Electronics 3 1 Item Remarks SCREW DRIVER MONKEY SPANNER Necessary Tools 3 Disassembly and Reassembly ...

Page 10: ...nditionerandshutoff mainpowersupply 2 OpentheFRONT GRILLEandpulloutfromthe PANEL FRONT 3 DetachCOVER TERMINALfromthePANEL FRONT use ScrewDriver 4 Loosenconnectorwire white anddetachthe temperaturesensorwire 5 TodetachtheFRONT PANELthemainframe unfasten2screwatthebottom use Screw Driver 6 TakeofftheFRONT PANEL liftingupthebottom ...

Page 11: ...he hookofmainframe 2 TodetachTRAY DRAINfromthemainframe pull thebottomoftheTRAY DRAINtowardsyou 3 TodetachTRAY DRAINfromthemainframe pullthebottomoftheTRAY DRAINtowardsyou 3 CONTROLIN 1 Unfastentheearthscrew use ScrewDriver 2 DetachthetemperaturesensorandHumidity sensor 3 Detachthetemperaturesensor ...

Page 12: ...white 5 TakeofftheCASE CONTROLfromthemain frame use ScrewDriver 4 PBA 1 LoosentheSTEPUP DOWNconnector CN802 Caution Whenyouseparatetheconnector pullpressingthelockingbutton 2 LoosentheFUSECHKconnector CN140 Caution Whenyouseparatetheconnector pullpressingthelockingbutton ...

Page 13: ... 4 LoosentheHumiditysensorconnector CN401 Optionconnector Caution Theterminalislockingtype So whenyouseparateterminals pullpressing thebutton 5 Loosenthe DISPLAYconnector CN501 Caution Theterminalislockingtype So whenyouseparateterminals pullpressing thebutton 6 LoosenthePOWERconnector Caution Whenyouseparatetheconnector pullpressingthelockingbutton ...

Page 14: ...ouch thecomponents PleaseholdthePBAbothside 8 LoosentheMotorconnector CN701 Caution Whenyouseparatetheconnector pullpressingthelockingbutton 9 TakeoffthemainPBAfromtheASS YControlin Caution WhenyoutakeoffthePBA don ttouch thecomponents PleaseholdthePBAbothside 5 EVAPORATOR 1 Unfastenthescrewattherightside use ScrewDriver ...

Page 15: ...s Procedure Remark 2 Unfastenthescrewattheleftside use ScrewDriver 3 DetachtheHOLDERPIPE use ScrewDriver 4 DetachtheBRACKET EVAP use ScrewDriver 5 DetachtheHOLDEREVAP use ScrewDriver 6 Loosen1fixingearthscrewrightside use ScrewDriver ...

Page 16: ...OTOR CROSSFAN 1 Loosen6fixingscrewsofHOLDER MOTOR 2 unfastenthescrewalittle use ScrewDriver 3 unfastenthescrewalittleandpulltheMOTOR FANtotherightside use ScrewDriver 4 Loosen1fixingscrewsofHOLDER FAN use ScrewDriver 5 unfastenthescrewalittle use ScrewDriver ...

Page 17: ...mp buttons simultaneously insert the batteries into the remote control c Make sure that you are entered to the mode for setting the options 2 Set the option values CAUTION The total number of available options are 24 SEG1 to SEG24 Because SEG1 SEG7 SEG13 and SEG19 are the page options used by the previous remote control models the modes to set values for these options are skipped automatically Set...

Page 18: ...G4 value by pressing the Low Fan button repeatedly until the value you want to set appears on the remote control display SEG4 b Set the SEG5 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 SEG5 4 Press the Mode button Dry and On appear on the rem...

Page 19: ... 8 Press the Mode button Heat and On appear on the remote control display 9 Set the SEG11 and SEG12 values a Set the SEG11 value by pressing the Low Fan button repeatedly until the value you want to set appears on the remote control display SEG11 b Set the SEG12 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...

Page 20: ...e 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 SEG17 3 Press the Mode button Dry and Off appear on the remote control display 4 Set the SEG18 and SEG20 values a Set the SEG18 value by pressing the Low Fan button repeatedly until the value you want t...

Page 21: ...l display SEG23 b Set the SEG24 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 SEG24 3 Check whether the option values that you have set are correct by pressing the Mode button repeatedly SEG21 SEG22 SEG23 SEG24 SEG24 SEG24 SEG2 SEG3 SEG4 SEG5 S...

Page 22: ...ntrol according to your air conditioning system plan by referring to the following table and by following the steps in Common steps for setting the addresses and options on page The indoor unit addresses main and RMC addresses are set to 0A0000 100000 200000 300000 by default If indoor units and outdoor units match 1 1 you don t need to set the main address because it is automatically set by the o...

Page 23: ...ude a power supply F1 1 L 2 M F2 V1 V2 F3 F4 Indoor Unit 2 Set the installation options of indoor units by referring to the following table and by following the steps in Common steps for setting the addresses and options on page The installation options of indoor units are set to 020000 100000 200000 300000 by default The SEG20 option Individual control with remote control allows you to control mu...

Page 24: ... Indication Details Indication Details 2 0 Disuse Slave disable Level control 0 Thermo on 0 Disuse 0 Use of buzzer 2 1000 hours 1 On Off control 2 Off control 3 Window on off control 4 Disuse Master enable Level control 1 Operation on 1 Use 1 Disuse of buzzer 6 2000 hours 5 On Off control 6 Off control 7 Window on off control Option SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 Function Page Individual cont...

Page 25: ...rnal control Level control Indoor 1 Indoor 2 Indoor 3 Indoor 4 Default Not set 0 Slave All Disuse Use 4 Not set 0 Not set 0 Not set 0 Master Indoor 1 Slave Indoor 2 3 4 Use Indoor 3 Disuse Not set 0 Not set 0 1 3 Not set 0 Slave All Use Indoor 4 Use Not set 0 Not set 0 Not set 0 5 7 Master Indoor 4 Slave Indoor 1 2 3 4 1 4 Changing the addresses and options individually When you want to change the...

Page 26: ... Low pressure s w 2nd detection 5 Abnomally high temperature on discharged air on outdoor unit 2nd detection 6 Indoor operation stop due to unconfirmed error on outdoor unit 7 Error due to reverse phase detection 8 Comp stop due to freeze detection 6th detection 9 High pressure sensor is detached 10 Low pressure sensor is detached 11 Outdoor unit copression ration error 12 Outdoor sump down_1 prev...

Page 27: ...or unit and outdoor unit When there is no response from indoor units after tracking is completed Check electrical connection and setting between indoor unit and outdoor unit 10 E203 Communication error between the outdoor unit and main micom For PF 4 to 6 controllers error will be determined from the time when the compressor is turned on Check electrical connection and setting between indoor unit ...

Page 28: ...EPROM Read Write error Option Check Outdoor EEPROM Data 33 E471 Outdoor unit EEPROM Read Write error H W Check Outdoor EEPROM PBA 34 E472 AC Line Zero Cross Signal out 35 E473 Comp Lock error 36 E474 Error on IPM Heat Sink sensor of inverter 1 Short or Open Check Outdoor Inverter PBA 37 E475 Error on inverter fan 2 FAN2 ERROR 38 E484 PFC Overload Over current Error Check Outdoor Inverter PBA 39 E4...

Page 29: ...m the connector in PCB Restart the system after replacing the PCB Restart the system after connecting to the PCB connector Indoor temperature sensor failure replace Remove the indoor temperature sensor connector from the PCB and measure the resistance between two terminals 4 3 Troubleshooting by symptoms 4 3 1 Indoor temperature sensor open short Current temperature C Resistance kΩ 40 5 800 35 6 9...

Page 30: ... exchanger temperature sensor replace Remove the indoor heat exchanger temperature sensor connector from the PCB and measure the resistance between two terminals Indoor unit display Symptom Short or open circuit of indoor heat exchanger temperature sensor Failure Short or open circuit in the corresponding sensor 4 3 2 Indoor heat exchanger temperature sensor open short Current temperature C Resist...

Page 31: ... motor connector is disconnected check the motor fan assembly status 4 3 3 Indoor FAN error Yes No Yes Is there foreign substance stuck in the motor fan Yes Is the motor connector disconnected from the PCB Replace the PCB and restart the unit Connect the connector to PCB and restart the unit Remove the foreign substance and restart the unit ...

Page 32: ...eform between the lines square wave with amplitude over 0 7V as shown in the following picture 0 7V 0 7V Good Bad Check the communication cable and replace the indoor unit PCB Remove the communication cable connecting the outdoor unit to indoor unit and measure the signal on LINE 2 of the outdoor unit with a scope Reconnect the cable connecting the outdoor unit to the indoor unit and restart the u...

Page 33: ...water level in the drain pan high Does drain pump operate when compressor operates Same error occurs again No Drain pump PCB Is the terminal voltage around AC 220V Is the water level in drain pan decreasing Reset the indoor unit power and check the operation of the drain pump it vibrates when operating Normal operation Replace the indoor unit PCB Reassemble the floating sensor connector and reset ...

Page 34: ...Symptom EEPROM circuit failure Failure EEPROM component failure EEPROM circuit parts missing damaged soldering failure 4 3 6 EEPROM circuit failure No Yes Are the EEPROM circuit components in good conditions missing components damage soldering failure Replace the PCB if the restart fails ...

Page 35: ...oller connected correctly 2 Check procedure Yes Turn off the main power switch circuit break of power outlet and turn on again after 30 seconds Check the input power No Is the outdoor unit power supply L N 220V Yes Check the connection of the terminal block No Is the outdoor unit power voltage L N 220V Yes Replace the inverter PBA No Is the voltage between the terminal 2 and 4 of the bridge diode ...

Page 36: ...4 20 Samsung Electronics Yes Outdoor unit is not powered on Initial diagnosis cont Yes Connect the reactor No Is the reactor connector connected correctly Replace the PBA Cont ...

Page 37: ...rocedure Yes Restart after power off Terminate the service Exchange the indoor unit PBA No Is the communication error occurred again Yes Correct the wrong cable No Is the connection of power cable and communication cable normal Yes Exchange the PBA of no power unit No Is the power is normal check the LED Lamp Yes Yes Terminate the service No Is the communication error occurred again Exchange the o...

Page 38: ...ect the sensor connector Micom error or connector check No Is the sensor resistance value 1 2 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the PBA of no power unit Yes Below 0 5V or Over 4 5V Yes Connect the...

Page 39: ...ture of 25 C Is the sensor connector CN502 connected correctly in accordance with a colorRED 4PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the PBA of no Ourdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 1 2 in the connector Exchange the Outdoor PBA Yes ...

Page 40: ...procedure PF2 Yes Reconnect the sensor connector Micom error or connector check No Is the sensor resistance value 5 6 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V ...

Page 41: ...emperature of 25 25 C Is the sensor connector CN501 connected correctly in accordance with a colorRED 4PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 3 4 in the connector Exchange the Outdoor PBA Yes ...

Page 42: ...oting procedure PF2 Yes Reconnect the sensor connector Micom error or connector check No Is the sensor resistance value 3 4 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 242kohm 30 C 166ohm 35 C 138ohm 40 C 115kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Y...

Page 43: ...m error or connector check No Is the sensor resistance value 3 4 CN501 10kohm 3 at the room temperature of 25 25 C Is the sensor connector CN502 connected correctly in accordance with a colorRED 4PIN No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 3 4 in the connector Exchange the Outdoor PBA Yes ...

Page 44: ...e the Outdoor PBA Download the EEPROM data No Is the discharge over temperature sensor error appeared again Terminate the service No No Terminate the service Is the discharge over temperature sensor error appeared again Is the discharge over temperature sensor error appeared again The condition is too poor for air conditioner to operate Wait until discharge temperature is decreased Restart after p...

Page 45: ...d Separate the Fan motor wire from CN901 on Outdoor PBA PBA problem or Motor problem Change the PBA first and check the operation No Yes Does the fan rotate Terminate the service Exchange the Fan motor No No No Follow the check procedure of outdoor unit power supply error check Exchange the Outdoor PBA Is the fan error appeared again Is there short among each pin 1 6 Is the voltage of CN901 3 5 an...

Page 46: ...pressor normal 2 Troubleshooting procedure Terminate the service Download the EEPROM data No Is the restart error occurred again Is the connection of compressor wire is normal Connect the comp wire normally No No No Yes Terminate the service Exchange the Outdoor PBA Is the restart error occurred again Is the compressor body and interphase resistance insulated Exchanged the Compressor Restart after...

Page 47: ...tance of compressor normal 2 Troubleshooting procedure Terminate the service No Is the restart error occurred again Is the connection of compressor wire is normal PBA and Compressor Connect the comp wire normally No No No Yes Terminate the service Exchange the Outdoor PBA Is the restart error occurred again Is the compressor body and interphase resistance insulated Exchanged the Compressor Restart...

Page 48: ... error occurred Is the connection of compressor wire is normal No No Yes No No No No No Yes Exchange the Outdoor PBA Correct the sensor position or exchange the sensor Is the O C error occurred again Terminate the service Restart after returning to the normal load Terminate the service Connect the comp wire normally Terminate the service Is the restart error occurred again Is the condition of indo...

Page 49: ...04 R005 R006 R007 value is normal Outdoor PBA 2 Troubleshooting procedure Connect the reactor wire No Is the connected of reactor wire PBA Reactor Is the DC_link voltage CE101 or CE001 is normal in operation mode Normal range 280Vdc 320Vdc Check the power input No No No No Exchange the Outdoor PBA Exchange the Outdoor PBA IstheDC_linksensingvoltage R104orR004 isnormalin operationmode Normalrange 0...

Page 50: ...ormal Outdoor PBA 2 Troubleshooting procedure Connect the reactor wire No Is the connected of reactor wire PBA Reactor Is the the input voltage is nomal Normal range 180Vac 270Vac Is the reactor insulation damaged Check the input power in the powercord No No No No Check the input power Exchange the Outdoor PBA Exchange the Outdoor PBA Is theDC_linkvoltage CE101orCE001 isnormalinoperation mode Norm...

Page 51: ...error 4 Is the interphase resistance of compressor normal 2 Troubleshooting procedure Restart after returning to the normal load No Yes Is the condition of indoor outdoor temperature normal load Is the I_trip error occurred again Terminate the service No No No No Correct the sensor position or exchange the sensor Correct the cable connection Isthepositionoftemperaturesensorandthesensingvalue norma...

Page 52: ...the IPM Shunt PF2 R451 R452 R453 PF23 R413 R414 R415 resistance value correct Check the resistor is opened 3 Is there no short or open around IC451 PF2 or IC451 IC452 PF3 2 Troubleshooting procedure Exchange the Outdoor PBA No Is the PFC shunt and IPM shunt resistance value correct No Terminate the service Isthecurrentsensorerrorappearedagain Exchange the Outdoor PBA Restart after power off Yes Ye...

Page 53: ... Is the gap PBA heatsink 3 Is the fan operation normal 4 Is the cover assembly in control box normal 2 Troubleshooting procedure Fastening the screw No Are there screws in PBA heatsink 4 screws No Check the fan connection Change the Fan motor Is the fan operation normal Exchange the Outdoor PBA Restart after power off Yes Yes Yes ...

Page 54: ...rminate the service Exchange the Outdoor PBA No No Yes IIs the O C error occurred Is the O C error occurred again Terminate the service No No No No No No Connect the comp wire normally Terminate the service Correct the sensor position or exchange the sensor Restart after returning to the normal load Is the connection of compressor wire is normal Is the O C error occurred again Is the condition of ...

Page 55: ...ere a short around IC202 PF2 or IC701 PF3 3 Did you download or insert EEPROM IC after changing outdoor PBA 2 Troubleshooting procedure Terminate the service No Restart after power off Is the error appeared again Exchange the Outdoor PBA power off and download EEPROM data or Insert the service EEPROM IC Yes ...

Page 56: ...ist 1 Check the power condition at customer s house Is there any power noise 2 Have been there power failure 2 Troubleshooting procedure Terminate the service No Is the AC line zero cross signal error appeared again Exchange the Outdoor PBA Restart after power off Yes ...

Page 57: ...2 Troubleshooting procedure Terminate the service No Is the operation condition secession error appeared again Heating mode Is the outdoor temperature over 40 C or under 30 C Cooling mode Is the outdoor temperature under C Thetemperatureconditionistoopoortooperate Wait until temperature is changed Restart after power off Yes Yes ...

Page 58: ...rocedure Exchange the one of them according to the exact model spec Terminate the service Terminate the service No No No Is the capacity miss match error appeared again Is the capacity miss match error appeared again Is the rated Btu between indoor unit and outdoor unit Download the EEPROM data Exchange the Outdoor PBA Exchange the Indoor PBA Reset the option code again at indoor unit Yes Yes Yes ...

Page 59: ...heck the pipe crack Fill up the refrigerant No No Is the position of indoor eva_in sensor normal No No No Terminate the service Change the EEV valve Connect the EEV valve Is the gas leak error appeared again Is the EEV valve connection normal Is the EEV valve is operation Check the sound of EEV valve after power on Is the pressure of refrigerant normal Exchange the Indoor PBA Exchange the Outdoor ...

Page 60: ...Samsung Electronics 5 1 5 PCB Diagram 5 1 Indoor Unit MAIN PCB 4 5 6 7 8 10 9 11 12 13 1 2 3 ...

Page 61: ...TURE SENSOR SIGNAL 6 GND 1 3 LED SIGNAL 4 REMOCON SIGNAL 5 GND 6 DC 5V 7 8 REMOCON SIGNAL 9 11 NOT USED 1 GND 2 NOT USED 3 DC 5V 4 7 EEPROM SIGNAL 1 8 DOWNLOAD SIGNAL 9 GND 10 11 DC 5V 12 16 DOWNLOAD SIGNAL 17 GND 18 20 DOWNLOAD SIGNAL 1 2 COMMUNICATION SIGNAL 3 4 SUB PBA SIGNAL 5 EXTERNAL CONTROL SIGNAL 6 COMP CHECK SIGNAL 7 ERROR CHECK SIGNAL 8 DC 5V 9 GND 10 DC 12V 11 14 COMMUNICATION SIGNAL CN...

Page 62: ...Samsung Electronics 5 3 Sub PCB 1 1 2 19 20 COMM SIGNAL 3 18 EXTERNAL CONTROL 4 17 COMP CHECK 5 16 ERROR CHECK 6 VCC DC5V 7 14 GND 8 13 15 DC12V 9 12 COMM SIGNAL CN1 2WIRES COMM ...

Page 63: ...Samsung Electronics 6 1 This Document can not be used without Samsung s authorization 6 Wiring Diagram 6 1 Indoor Unit ...

Page 64: ...mp Q Inv Side TropicalTemp F Inv Top TropicalTemp B Non Inv Side GeneralTemp N Non Inv Side LowTemp R Non Inv Side TropicalTemp Z Non Inv Top TropicalTemp U UNITED STATUS DUCT K DVM PLUS4 V DVM Inverter L DVM SLIM G DVM GHP M DVM MINI W DVMWATER C DVM GEO GEOTHERMAL D DVM PLUS3 X DVM PLUS2 J FREE JOINT MULTI P PACK MULTI H DVM HOME E SINGLE T MULTI Y MONO ProductType Indoor Code Type F FLAGSHIP P ...

Page 65: ...liquid to gas Absorbing heat required for evaporation SERVICE VALVE You can open the valve by turning the need valve counterclockwise using hex wrench and it is used for vacuum gas purging coolant injection coolant purging and indoor outdoor unit connection ACCUMULATOR Accumulator prevents the flow of liquid state coolant into the compressor Liquid state coolant flowing into the compressor will ov...

Page 66: ...ervice 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 ...

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