Samsung AM040FXMDEH Service Manual

Samsung AM040FXMDEH Service Manual

System air conditioner
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AIR CONDITIONER
Refer to the service manual in the GSPN(see the rear cover) for the more information.
SYSTEM AIR CONDITIONER
OUTDOOR UNIT
AM040FXMDEH
AM050FXMDEH
AM060FXMDEH
AM040FXMDGH
AM050FXMDGH
AM060FXMDGH
AM060KXMDGH
AM040KXMDEC
AM050KXMDEC
CONTENTS
Product Specifications
Disassembly and Reassembly
Troubleshooting
PCB Diagram
Wiring Diagram
Reference Sheet
Check Operation & Amount of
Refregent Automatically Checking

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Summary of Contents for Samsung AM040FXMDEH

  • Page 1 SYSTEM AIR CONDITIONER OUTDOOR UNIT AM040FXMDEH AM050FXMDEH AM060FXMDEH AM040FXMDGH AM050FXMDGH AM060FXMDGH AM060KXMDGH AM040KXMDEC AM050KXMDEC AIR CONDITIONER CONTENTS Product Specifications Disassembly and Reassembly Troubleshooting PCB Diagram Wiring Diagram Reference Sheet Check Operation & Amount of Refregent Automatically Checking Refer to the service manual in the GSPN(see the rear cover) for the more information.
  • Page 2: Table Of Contents

    Contents Product Specifications ............................................... 1. The Feature of Product 1-1 Featres ..................................................2. Product Specifications Disassembly and Reassembly ....................Troubleshooting ..........................1. Error Display ........................................................2. Error Code ..................3. How to take measures for each symptom 3-1 Communicaion error between indoor and outdoor units during tracking(Error Code:E201) ..
  • Page 3 High efficient G-Fin & epoxy acrylic coating has increased heat transfer and hydrophilicity on heat exchanger. Company A Diameter Ø8 Ø7 Heat transfer surface area Pressure Evaporation 14.1% loss in heat Condensation exchanger 10.3% Internal heat transfer performance 30.8% Pressure resistance Same Company A Samsung Electronics...
  • Page 4 Saturated liquid refrigerant Temperature Low temperature gas refrigerant 온도 Low temperature liquid refrigerant Cross section of the Cross section of the Sub-cooled conventional inter-cooler Turbo inter-cooler liquid refrigerant *Increased heat transfer area with Shell & Tube type Turbo Inter-cooler Samsung Electronics...
  • Page 5 Corrosion is evident after 1,000 hours of test Company A * Tested by Samsung Long piping/High level difference technology Longest piping length is allowed up to 175m (equivalent length) and Maximum 50m of level difference is allowed for more flexible installation.
  • Page 6 When outdoor unit needs to operate more silently during nighttime, silent mode can be set from the outdoor unit option mode. Silent mode can be adjusted in 3 levels depending on the level of noise. Highest temperature 6 hours 12 hours of silent mode Operation time 7 : 00 13 : 30 19 : 00 7 : 00 Samsung Electronics...
  • Page 7 Displaying 15 main data including high pressure of system - Outdoor temperature - Discharge temperature of the compressor - Condensing temperature Using the DIP switch on the outdoor unit PCB, you can limit the running current of the system Samsung Electronics...
  • Page 8: Product Specifications

    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 installation and maintenance services. Conventional * For models with 9kW or larger (Flare type connection) Samsung Electronics...
  • Page 9 2. Product Specifications Type Performance Model AM040FXMDEH AM050FXMDEH AM060FXMDEH Power Supply(Φ/V/Hz) 1,220-240,50 1,220-240,50 1,220-240,50 Mode Cooling 12.1 14.0 15.5 Performance Heating 13.5 16.0 18.0 Cooling* 14.0 17.8 21.0 Running Current Heating* 15.1 17.2 20.2 Power Cooling* 2890 3680 4310 Input...
  • Page 10 Shipping Weight Set Size Net dimension(WxHxD) 940x1,210x330 940x1,210x330 940x1,210x330 Shipping dimension(WxHxD) 995x1,338x426 995x1,338x426 995x1,338x426 Cooling °C -5~48 -5~48 -5~48 Operating Temp. Range Heating °C -20~26 -20~26 -20~26 Maximum of connected indoor units * Rated Power/Current using Ducted indoor units Samsung Electronics...
  • Page 11 VCTF 0.75~1.5 Net weight 7976 Shipping Weight Set Size Net dimension(WxHxD) 940×998×330 940×998×330 Shipping dimension(WxHxD) 1009×1084×419 1009×1084×419 Cooling °C -5~52 -5~52 Operating Temp. Range Heating °C Maximum of connected indoor units * Rated Power/Current using Ducted indoor units Samsung Electronics...
  • Page 12: Disassembly And Reassembly

    Disassembly and Reassembly Necessary Tools Item Remark +Screw Driver Monkey Spanner –Screw Driver Nipper Electric Motion Driver L-Wrench Samsung Electronics...
  • Page 13 Disassembly and Reassembly AM040FXMDEH, AM050FXMDEH, AM060FXMDEH, AM040FXMDGH, AM050FXMDGH, AM060FXMDGH Parts Procedure Remark 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) Cabi Top 1) Unscrew and remove 9 screws on each side of the Cabinet-Top.
  • Page 14 2) Unscrew and remove 4 screws in the Guard Cond. (Use + Screw Driver) 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) Samsung Electronics...
  • Page 15 Disassembly and Reassembly Parts Procedure Remark Cabi Install Back 1) Unscrew and remove 1 screw in the Cabinet-Install Back. (Use +Screw Driver) Cabi Front LF 1) Unscrew and remove 10 screws in the Cabinet-Front LF. (Use +Screw Driver) Samsung Electronics...
  • Page 16 Disassembly and Reassembly Parts Procedure Remark 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use L Wrench or Monkey Spanner or Socket Wrench ) Samsung Electronics...
  • Page 17 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. Bracket Motor 1) Unscrew and remove 2 mounting screws in Bracket Motor. (Use + Screw Driver) Samsung Electronics...
  • Page 18 Disassembly and Reassembly Parts Procedure Remark Control Out 1) Disconnect 9 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. Samsung Electronics...
  • Page 19 Ass'y Tube Suction 1) Separate 2 parts of the pipe using a welder. Ass'y Tube 4Way 1) Unscrew and remove 2 mounting screws in Oil Separator. (Use + Screw Driver.) 2) Separate 2 parts of the pipe using a welder. Samsung Electronics...
  • Page 20 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-Wrench or Monkey Spanner or Socket Wrench) Samsung Electronics...
  • Page 21 Disassembly and Reassembly Parts Procedure Remark Cond Out 1) Unscrew and remove 3 screws on each side of the Ass’y Cond Out. (Use + Screw Driver) Samsung Electronics...
  • Page 22 Cabi Top 1) Remove the 9 screws on each side of the Cabinet-Top and separate it. (Use +Screw Driver) Cabi-Install front part 1) Remove the 1 screw in the Cabinet-Install Front part and separate it. (Use +Screw Driver) Samsung Electronics...
  • Page 23 2) Remove the 4 screws in the Outdoor Unit Guard and separate it. (Use + Screw Driver) Cabi Back RH 1) Remove the 4 screws on each side of the Cabinet Back RH and separate it. (Use + Screw Driver) Samsung Electronics...
  • Page 24 Parts Procedure Remark Cabi-Install Back 1) Remove the 1 screw in the Cabinet-Install Back and separate it. (Use +Screw Driver) Cabi Front LF 1) Remove the 10 screws in the Cabinet-Front LF and separate it. (Use +Screw Driver) Samsung Electronics...
  • Page 25 Disassembly and Reassembly Parts Procedure Remark 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use L Wrench or Monkey Spanner or Socket Wrench) Samsung Electronics...
  • Page 26 (Use +Screw Driver) 3) Disconnect the Motor wire from Assy Control Out. Motor connection part : Can be different according to model. Bracket Motor 1) Remove the 2 mounting screws in Bracket Motor and separate it. (Use + Screw Driver) Samsung Electronics...
  • Page 27 Out. Number of connectors, that can be disconnected, may different depending on the model. (From 4~8) 2) Remove the 1 mounting screw in Control Out and separate it. (Use + Screw Driver.) 3) Separate the Assy Control Out. Samsung Electronics...
  • Page 28 ASS'Y TUBE 1) Priority refrigerant remove. VALVE 2) Using welding machine with picture 5 places a pipe disjoint. When remove Compressor, Heat Exchanger, a pipe, remove perfectly refrigerant of Compressor inside first, and disjoint a pipe by welding machine. Samsung Electronics...
  • Page 29 1) Fixed 1 screw of cover end part remove. (Use Hexagonal Wrench or Monkey Spanner or Hexagonal Socket.) 2) Remove the Compressor felt. 3) Like picture, remove the 3 screws fixed on bottom and separate it. (Use Hexagonal Wrench or Monkey Spanner or Hexagonal Socket.) Samsung Electronics...
  • Page 30 Disassembly and Reassembly Parts Procedure Remark Assy Cond Out 1) Remove the 3 screws that is fixing each side of Assy Cond Out and separate it. (Use +Screw Driver.) Samsung Electronics...
  • Page 31: Troubleshooting

    Troubleshooting 1. Error Display Samsung Electronics...
  • Page 32: Error Code

    DC LINK voltage sensor error E470 EEPROM read/write error E471 EEPROM unmatching error E474 Heat sink temperature error E475 Outdoor fan 2 error E484 PFC overload E485 Input current sensor error E500 Heat sink overheat E554 Gas leak error Samsung Electronics...
  • Page 33: How To Take Measures For Each Symptom

    Check the outdoor unit PCB communication each unit and replace the indoor unit PCB line and connector then replace the PCB. after checking out lines. Samsung Electronics...
  • Page 34: Communicaion Error Between Indoor And Outdoor Units During Tracking(Error Code:e202)

    PCB then find an indoor unit that hampers communication by making a connection to each unit and replace indoor unit PCB after checking out lines. Good Defective 0.7V 0.7V Samsung Electronics...
  • Page 35: Outdoor Units (Error Code:e203)

    7-segment on the outdoor unit main PBA does not display anything, change the main PBA Outdoor unit inverter PBA is normal MAIN PBA connector (CN39) [7-segment on [RD✳✳✳✳HXG✳ series [RD✳✳✳✳XE✳ series Main PBA (Common)] inverter PBA LED] inverter PBA LED] Samsung Electronics...
  • Page 36: Outdoor Temperature Sensor Error (Error Code : E221, E231, E251, E269)

    Check if everything is normal and end service on temperature sensor similar to the values on the table on the right side? Change the outdoor unit PBA Turn on the power Check if everything is normal and end service Samsung Electronics...
  • Page 37: High Pressure Temperature Sensor Error (Open/Short) (Error Code : E291) Low Pressure Temperature Sensor Error (Open/Short) (Error Code : E296)

    On the high/ low-pressure sensor terminals of the PCB, Refill refrigerant after vacuum is the value of voltage 5V, between pins 3 and 4? The ▼ mark is the 1st pin on the PCB. Replace high/low-pressure sensor Samsung Electronics...
  • Page 38: Compressor Down By Antifreeze Control (Error Code: E403)

    Check the relevant indoor fan Is the indoor EEV working properly? Check the relevant EEV Is the sensor on indoor heat exchanger shows the temperature correctly? Refer to temperature sensor error section to check for error Check for indoor air inlet blockage Samsung Electronics...
  • Page 39: Comp. Down Due To A Protective Control Of High Pressure (Error Code : E407)

    Do the values of S-net and Replace a high pressure sensor Manifold gauge correspond? Does indoor/outdoor EEV Check the relevant EEV operate well? Is there any clogged place Check the piping in the piping (ex. filter)? Check the amount of refrigerant Samsung Electronics...
  • Page 40: Comp. Down Due To A Protective Control Of Low Pressureerror Code : E410)

    (ex. filter)? Is there any leakage in liquid pipe valve or discharge check valve of the stop-side outdoor Replace the relevant components unit when several outdoor units are in operation? Check the amount of refrigerant Samsung Electronics...
  • Page 41: Comp. Down Due To A Discharge Temperature Sensor Of A Compressor (Error Code : E416)

    S-net and Manifold gauge Replace a high pressure sensor correspond? Does indoor/outdoor EEV Check the relevant EEV operate well? Is there any clogged place in the piping Check the piping (ex. filter)? Check the amount of refrigerant Samsung Electronics...
  • Page 42: Reverse Phase Detection Error (3Phase Outdoor Unit) (Error Code : E425)

    3) If 3-phase power is normal check the phase of the power line using 3-phase tester. If it shows reverse phase, please change the current 3-phase tester power line connection. 4) After completing above, press reset key (K3) then check the power again. Samsung Electronics...
  • Page 43: Esc Eev Open Error (Error Code : E438)

    Check the leakage on sub-cooler Normal Change the sub-cooler Failure Check the leakage on indoor unit EEV Normal Change the indoor unit EEV Check the piping connection Connect liquid-gas pipe) Re-install the pipe Check the amount of refrigerant Samsung Electronics...
  • Page 44: Refrigerant Leakage Error (Error Code : E439)

    On the high-pressure sensor Replace the PCB of the PCB, is the value of voltage 5V, between pins 3 and 4? The ▼ mark is the 1st pin on the PCB. Replace the high/low-pressure sensor Samsung Electronics...
  • Page 45: Prohibition Of The Compressor Operation Due To Outdoor Temperature (Error Code : E440, 441)

    Is high pressure sensor correctly connected to PCB? Check and reconnect the connector Is there leakage of refrigerant in the system or charging inferior? (Check with manifold gauge) Refill or recharge the refrigerant Replace the high pressure sensor Samsung Electronics...
  • Page 46: Outdoor Unit Fan Error (Error Code : E458, 475)

    * Do not change the outdoor unit PBA with fan motor problem If the 7-segment on the outdoor unit main PBA shows error, there is no problem with outdoor unit main PBA Control related problems can be solved by S/W update Samsung Electronics...
  • Page 47: Comp Down Due To Olp Temperature Control (Error Code : E463)

    Do the values of S-net and Manifold gauge Replace a high pressure sensor correspond? Does indoor/outdoor EEV Check the relevant EEV operate well? Is there any clogged place Check the piping in the piping (ex. filter)? Check the amount of refrigerant Samsung Electronics...
  • Page 48: Compressor Starting/Rotation Error (Error Code : E461, E467)

    3. Is there any noise when the 3. Change the compressor: When loud compressor rotates? abnormal noise generates (such as metal grinding), or severe vibration Is the resistance between Change the compressor compressor body and chassis MegaΩ? Cont. Samsung Electronics...
  • Page 49 It is Compressor, inverter PBA related error, therefore it is not related to above PBA * Make sure to check if service valve is open If the service valve is close, damage could occur due to pressure difference during operation Samsung Electronics...
  • Page 50: Current Error / Pfc Overload Error (Error Code : E462, E484)

    2. Remove obstacles on air outlet and secure enough space Open the valve Is the service valve completely open? Change the compressor Is the compressor operating normally? Change the outdoor unit inverter PBA and check for normal operation End service Samsung Electronics...
  • Page 51: Ipm Over Current Error (Error Code : E464)

    1. Remove obstacles on air inlet and secure Is the indoor unit installed correctly?? enough space 2. Remove obstacles on air outlet and secure enough space Is piping/wiring between Re-install them correctly the indoor and outdoor unit done correctly? Cont. Samsung Electronics...
  • Page 52 Is the resistance between Change the compressor compressor body and chassis MegaΩ? Is the location and Turn off the power and change the location measured value of the of the temperature sensor or replace it temperature sensor normal? Cont. Samsung Electronics...
  • Page 53 Change the PCB [AM0✳✳✳XMDGH series] [AM0✳✳✳XMDEH series] * Do not change the EMI/outdoor unit main/ Indoor unit main PBA when E464 error occurs It is Compressor, inverter PBA related error, therefore it is not related to above PBA Samsung Electronics...
  • Page 54: Dc-Link Voltage Under/Over Error (Error Code : E466)

    PBA normal? 2. Is there any problem on reactor coil? 2. Change the reactor Check for normal operation (such as scratch/pressed/ End service broken terminal/loose [Check list for AM0✳✳✳XMDGH series] terminal) [Check list for AM0✳✳✳XMDEH series] Cont. Samsung Electronics...
  • Page 55 2. Connect the terminal and the power cable in 2. Is power cable and terminal on the the power terminal cabinet Check for power terminal cabinet firmly normal operation End service assembled? Change the outdoor unit inverter PBA and check for normal operation End service Samsung Electronics...
  • Page 56: Gas Leak Error (Error Code : E554)

    3. Is there any noise when 3. Change the compressor: When loud abnormal the compressor rotates? noise generates (such as metal grinding), or severe vibration Is the outdoor and indoor unit Install them correctly pipes/cables correctly installed? Cont. Samsung Electronics...
  • Page 57 Gas leak error (Error Code : E554) (cont.) Cont. Open the valve Is the service valve completely open? Re-connect the sensor connector Is the EVA sensor correctly connected? Charge the refrigerant Is the refrigerant charged? Is the refrigerant charged? Samsung Electronics...
  • Page 58: Others

    When error occurs, turn on/off the power for number of time and if same error occurs while the power is off, change the inverter PBA 7. EEPROM read/write error: E470 Error occurs when there is no EEPROM data in the set. Check the model name and insert EEPROM for corresponding model or load the EEPROM data. Samsung Electronics...
  • Page 59: Pcb Diagram

    PCB Diagram Outdoor Unit PCB - Main PCB 9 12 10 11 14 15 17 18 19 22 23 Samsung Electronics...
  • Page 60 #1 : INPUT #3 : GND #3 : GND #4 : VCC #4 : VCC CN303- ㉑ CN401-MID P SENSOR ㉒ CN302-COMM SUB PBA ㉓ ㉔ CN103-EARTH COM INDOOR UNIT #1 : INPUT #2 : GND #4 : VCC Samsung Electronics...
  • Page 61 #2 : COMP. V-phase(BLU) #3 : GND #3 : GND #3 : COMP. U-phase(YEL) #4 : DC 15V #4 : DC 15V #5 : FAN RPM #5 : FAN RPM #6 : FAN RPM feedback #6 : FAN RPM feedback Samsung Electronics...
  • Page 62 #3 : GND, #4 : DC 15V #2 : COMP. V-phase(BLU) #5 : FAN RPM, #6 : FAN RPM feedback #5 : FAN RPM, #3 : COMP. U-phase(YEL) #6 : FAN RPM feedback CN600-REACTOR ⑨ #1-#2 : DCL Reactor Samsung Electronics...
  • Page 63 PCB Diagram Outdoor Unit PCB (cont.) - EMI PCB : 1Phase ① L1-AC POWER L phase ② N1-AC POWER N phase ③ CN01-AC POWER L1 : BRN N1 : SKY-BLU #1-#3 : AC 220~240V Samsung Electronics...
  • Page 64 Outdoor Unit PCB (cont.) - EMI PCB : 3Phase RST-AC POWER 3phase CN100-AC POWER ① ② #R : AC 380~400V : WHT #1-#3 : AC 220~240V #S : AC 380~400V : BRN #T : AC 380~400V : BLK Samsung Electronics...
  • Page 65: Wiring Diagram

    Wiring Diagram 1 Phase This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 66 Wiring Diagram 3 Phase This Document can not be used without Samsung's authorization. Samsung Electronics...
  • Page 67: Reference Sheet

    Hot gas Double pipe bypass out tube Main EEV temperature “A” ESC EEV Filt Filter Service V/V 9.52 AM040✳XMD✳H Name AM060✳XMD✳H AM050✳XMD✳H “A” Service V/V 15.88 19.05 AM040KXMDEC, AM050KXMDEC High pressure switch Connection pipe 15.88 Connection pipe 9.52 Samsung Electronics...
  • Page 68: Nomenclature

    DVM PLUS2 (OUTDOOR) Mode COOLING ONLY HEAT PUMP HEAT RECOVERY Product Notation DVM PLUS (OUTDOOR) DVM Inverter (OUTDOOR) DVM SLIM (OUTDOOR) DVM GHP (OUTDOOR) DVM MONO (OUTDOOR) DVM WATER (OUTDOOR) DVM GEO(GEOTHERMAL) (OUTDOOR) DVM PLUS3 (OUTDOOR) DVM PLUS2 (OUTDOOR) Samsung Electronics...
  • Page 69: Check Operation & Amount Of Refrigerant Automatically Checking

    - Check the drainage of the Indoor Unit cooling operation. - More operation : Checking status by using the S-NET. (5) Refer to manual and explain air conditioner usage to user. 6) Deliver this installation guide so that customer retain. Samsung Electronics...
  • Page 70: How To Trouble Of The "Undetermined

    - Oblique line marked area in the during operation of the system can be protection control. (Check operation of normal judgment can be difficult by the protection control operation.) - If out of warranty coverage and the boundary area : Check operation judgment accuracy may be reduced. Samsung Electronics...
  • Page 71 Is deviations of the Indoor Unit Temperature sensors, less than 10℃? Complete [Caution] - If the Outdoor Unit with a history of operation (Automatic commissioning inclusion) : Must be carried out Automatic Commissioning after 1 hour from final operation stopped. Samsung Electronics...
  • Page 72 Is deviations of the Indoor Unit Temperature sensors, less than 10℃? Complete [Caution] - If the Outdoor Unit with a history of operation (Automatic commissioning inclusion) : Must be carried out Automatic Commissioning after 1 hour from final operation stopped. Samsung Electronics...
  • Page 73 High pressure Max/Min deviation : less than 2 Off the vauum mode Outdoor Unit Complete [Caution] - If the Outdoor Unit with a history of operation (Automatic commissioning inclusion) : Maintain the vacuum mode for more than 5 minutes. Samsung Electronics...
  • Page 74 Replace Inverter PCB and CTsensor have the same value? Is refrigerant in Is Compressor current(CT) value normal? the system properly? Adjusts the refrigerant (Addition / Emitted) IIs operation current of Compressor normal? Replace Compressor Complete Samsung Electronics...
  • Page 75 Temperature(℃) connector, resistance, etc.) 89.0 112.0 185.0 320.0 590.0 2000.0 2402.0 When commissioning, does maintain 3602.0 Indoor ventilation 5503.0 Thermo On status of Indoor Unit? Adjusts the refrigerant Is refrigerant in the system propely? (Addition / Emitted) Complete Samsung Electronics...
  • Page 76 Confirmation and Measures Is 4Way Valve coil normal? Replace Valve coil (Wire breaking, operation impossible, etc.) Is PCB Output signal normal? Replace PCB Replace 4Way Valve Body (Retry the Automatic Commissioning : If the continuous "Undetermined" is displayed. Complete Samsung Electronics...
  • Page 77: Automatic Commissioning Error Code

    E503 Service Valve is closed Refer to "Service Valve" Dedicated Error Code E505 High pressure sensor breakdown Refer to "High/Low pressure sensor (Module installed)" E506 Low pressure sensor breakdown ※ Other error codes : Refer to Service Manual. Samsung Electronics...
  • Page 78: Amount Of Refrigerant Automatically Checking

    - Add 5% of the detected amount of refrigerant and restart the refrigerant amount detection operation. - Check if the refrigerant amount detection operation was executed within guaranteed temperature range. Execute trial operation to check if there's any other problems on the system. Samsung Electronics...
  • Page 79 China china.samsungportal.com © Samsung Electronics Co., Ltd. December. 2016. This Service Manual is a property of Samsung Electronics Co., Ltd. Printed in Korea. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. Code No. AC-00028E_2...

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