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Samsung AM036FXMDCH Service Manual
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Samsung AM036FXMDCH Service Manual

System air conditioner
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See also: Installation Manual
AIR CONDITIONER
Refer to the service manual in the GSPN(see the rear cover) for the more information.
SYSTEM AIR CONDITIONER
OUTDOOR UNIT
AM036FXMDCH
AM048FXMDCH
AM053FXMDCH
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 AM036FXMDCH

  • Page 1 SYSTEM AIR CONDITIONER OUTDOOR UNIT AM036FXMDCH AM048FXMDCH AM053FXMDCH 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: Product Specifications

    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: Samsung Electronics

    Saturated liquid refrigerant Temperature Low temperature gas refrigerant 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 • 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 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: Product Specifications

    2. Product Specifications Type Performance Btu/h 38,000 48,000 53,000 Model AM036FXMDCH AM048FXMDCH AM053FXMDCH Power Supply(Φ/V/Hz) 1, 208~230, 60 1, 208~230, 60 1, 208~230, 60 Mode Cooling Btu/h 38,000 48,000 53,000 Performance Heating Btu/h 42,000 54,000 61,000 -10°C Heating Btu/h 26,500...

  • Page 10: 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 11 Cabinet Front RH. (Use + Screw Driver) Cabi Top 1) Unscrew and remove 9 screws on each side of the Cabinet-Top. (Use +Screw Driver) Cabi Install Front 1) Unscrew and remove 1 screw in the Cabinet-Install Front. (Use +Screw Driver) Samsung Electronics...
  • Page 12 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 13 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 14 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 15 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 16 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 17 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 18 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 19 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 20: Troubleshooting

    Troubleshooting 1. Error Display Samsung Electronics...

  • Page 21: 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 22: 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 23 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 24: Outdoor Units (Error Code:e203)

    Red-On, Green-On, Orange-Blinking and if the MAIN PBA connector (CN39) 7-segment on the outdoor unit main PBA does not display anything, change the main PBA Outdoor unit inverter PBA is normal [7-segment on FXMDCH series Main PBA (Common)] inverter PBA LED] Samsung Electronics...

  • Page 25: 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 26: 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 Refill refrigerant after vacuum sensor terminals of the PCB, is the value of voltage 5V, between pins 3 and 4? mark is the 1st pin on the PCB. Replace high/low-pressure sensor Samsung Electronics...

  • Page 27: 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 28: 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 29: 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 unit when Replace the relevant components several outdoor units are in operation? Check the amount of refrigerant Samsung Electronics...

  • Page 30: 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 Check the piping clogged place in the piping (ex. filter)? Check the amount of refrigerant Samsung Electronics...

  • Page 31: 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 32: 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 33: 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? mark is the 1st pin on the PCB. Replace the high/low-pressure sensor Samsung Electronics...

  • Page 34: 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 35: 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 36: 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 37: 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 38 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 39: Current Error / Pfc Overload Error (Error Code : E462, E484)

    2. Remove obstacles on air outlet and secure enough space Is the service valve completely open? Open the valve Is the compressor operating normally? Change the compressor Change the outdoor unit inverter PBA and check for normal operation End service Samsung Electronics...

  • Page 40: Ipm Over Current Error (Error Code : E464)

    1. Remove obstacles on air inlet and secure enough space Is the indoor unit installed correctly?? 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 41 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 42 End service Change the PCB FXMDCH 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 43: Dc-Link Voltage Under/Over Error (Error Code : E466)

    Check for outdoor unit inverter PBA normal? normal operation End service 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 terminal) FXMDCH series] Cont. Samsung Electronics...
  • Page 44 End service 2. Connect the terminal and the power cable in the power terminal cabinet Check for normal operation End service Change the outdoor unit inverter PBA and check for normal operation End service Samsung Electronics...

  • Page 45: 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 46 Gas leak error (Error Code : E554) (cont.) Cont. Open the valve Is the service valve completely open? Is the EVA sensor correctly connected? Re-connect the sensor connector Charge the refrigerant Is the refrigerant charged? Is the refrigerant charged? Samsung Electronics...

  • Page 47: 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 48: Pcb Diagram

    PCB Diagram Outdoor Unit PCB - Main PCB Samsung Electronics...
  • Page 49 ONLY #2 : INPUT #1 : INPUT #3 : GND #3 : GND #4 : VCC #4 : VCC CN302-COMM SUB PBA CN303-COM INDOOR UNIT CN103-EARTH CN401-MID P SENSOR #1 : INPUT #2 : GND #4 : VCC Samsung Electronics...
  • Page 50 #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 51 PCB Diagram Outdoor Unit PCB (cont.) - EMI PCB : 1Phase L1-AC POWER L phase N1-AC POWER N phase CN01-AC POWER L1 : BRN N1 : SKY-BLU #1-#3 : AC 220~240V Samsung Electronics...

  • Page 52: Wiring Diagram

    Wiring Diagram 1 Phase This Document can not be used without Samsung’s authorization. This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 53: Reference Sheet

    Reference Sheet 1. Refrigerant cycle diagram OUTDOOR UNIT AM036FXMDCH Name AM048FXMDCH AM053FXMDCH RD050MHXGA(EA) “A” Service V/V 15.88 19.05 Samsung Electronics...

  • Page 54: Nomenclature

    Reference Sheet 2. Nomenclatures OUTDOOR UNIT Samsung Electronics...

  • Page 55: 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 56 - 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 57 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 58 Outdoor Unit Temperature sensors, less than 1 0 ? 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 59 Max Replace PCB /Min deviation : less than 2" 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 60 CT Replace Inverter PCB sensor have the same value ? Is refrigerant Is Compressor current(CT) value normal? in the system properly? Adjusts the refrigerant (Addition / Emitted) IIs operation current of Compressor normal? Replace Compressor Complete Samsung Electronics...
  • Page 61 1 8 . 3 2 . 5 9 . 2 0 0 . Adjusts the refrigerant Is refrigerant in the system properly ? 2 4 2 . (Addition / Emitted) 3 6 2 . 5 5 3 . Complete Samsung Electronics...
  • Page 62 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 63: Automatic Commissioning Error Code

    Remark 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 64: Amount Of Refrigerant Automatically Checking

    Deficiency of refrigerant amount : After the 5% addition of calculated total refrigerant amount, retry refrigerant detection operation. Undetermined : Refrigerant detection operation confirms that is performed in warranty temperatures area. Ensure that there is no other problems in the system by Commissioning. Samsung Electronics...
  • Page 65 © Samsung Electronics Co., Ltd. February. 2013. 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-00013E_1...

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