Samsung AM100BXMWGH/EU Service Manual
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Samsung AM100BXMWGH/EU Service Manual

Samsung AM100BXMWGH/EU Service Manual

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AIR CONDITIONER
SYSTEM AIR CONDITIONER
OUTDOOR UNIT
DVM S ECO BIG
AM100BXMWGH/EU
AM120BXMWGH/EU
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Part List
6. Wiring Diagram
7. Cycle Diagram
8. Key Options
9. Reference Sheet

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Summary of Contents for Samsung AM100BXMWGH/EU

  • Page 1 SYSTEM AIR CONDITIONER OUTDOOR UNIT DVM S ECO BIG AM100BXMWGH/EU AM120BXMWGH/EU AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagram and Part List 6. Wiring Diagram 7. Cycle Diagram 8. Key Options...

  • Page 2: Table Of Contents

    5-4 Fan ....................................5-8 5-5 Communication ..............................5-10 6. Wiring Diagram ..................6-1 6-1 AM100/120BXMWGH ...............................6-1 7. Cycle Diagram ..................7-1 7-1 AM100BXMWGH/EU ..............................7-1 7-2 AM120BXMWGH/EU ..............................7-1 7-3 Cycle Component Function Explanation ......................7-2 8. Key Options ....................8-1 8-1 Outdoor unit option switch settings ........................8-1 9.

  • Page 3: Precautions

     Explain to workers that the battery for the remote control needs to be separated for storage purposes when the product will not be used for a long time. – This can cause a problem for the remote control since battery fluid may trickle out. Samsung Electronics...

  • Page 4: Precautions For Handling Refrigerant For Air Conditioner

    If the compressor is operating while the refrigerant pipe is not correctly connected and the service valve is opened, then air and other substances can enter the pipe. The interior of the refrigerant cycle may then build up excessive high pressure resulting in explosion and damage. Samsung Electronics...

  • Page 5: Product Specifications

    Intercooler Vapor + Liquid Vapor + Liquid Outdoor DB Temperature ※ 10HP, ’15Y High EER vs ‘14Y Standard ※ Flash Injection : Injection of mixed Vapor with liquid Ref. for increasing Ref. flow density at low ambient. Samsung Electronics...

  • Page 6: Structure Of Product

    PLATE HEAT EXCHANGER COMPRESSOR HIGH PRESSURE SENSOR VALVE 4WAY HOT GAS BYPASS VALVE DISCHARGE CHECK VALVE LOW PRESSURE SENSOR PLATE COOLING OIL SEPARATOR EVI BYPASS VALVE EVI VALVE SUB COOLER (PHE) MAIN EEV EVI EEV EEV BYPASS CHECK VALVE Samsung Electronics...
  • Page 7 Product Specifications MAIN PBA FAN PBA REACTOR INVERTER PBA EMI PBA COMMUNICATION PBA Samsung Electronics...

  • Page 8: Product Specifications

    Heating 12.2 14.4 21.5 23.5 MFA (MOP) Nominal Cooling 2.20 2.35 Nominal Heating 3.60 3.65 Type Samsung Scroll Inverter Samsung Scroll Inverter Output kW × n 6.39 6.39 x 1 Compressor Model Name DS-GB066FAVB DS-GB066FAVB Type Comp Charge 1100 1100...

  • Page 9: Accessory And Option Specifications

    (Only H/R)- MXJ-TA3800M Over 140.2 kW Outdoor Unit MEV-E24SA EEV KIT (1 Room) MEV-E32SA MXD-E24K132A MXD-E24K200A EEV KIT (2 Room) Applty to products without EEV MXD-E32K200A (Wall mount & Ceiling) MXD-E24K232A MXD-E24K132A MXD-E24K300A EEV KIT (3 Room) MXD-E32K224A MXD-E32K300A Samsung Electronics...

  • Page 10: Disassembly And Reassembly

    3. Disassembly and Reassembly 3-1 Necessary Tools Item Remark +SCREW DRIVER MONKEY SPANNER -SCREW DRIVER NIPPER ELECTRIC MOTION DRIVER L-WRENCH Samsung Electronics...

  • Page 11: Disassembly And Reassembly

    CABINET FRONT RIGHT Warning:Make sure the power is disconnected before work 1) Remove 3 screws. (use "+" screw driver or electric motion driver) CABINET TOP 2) Remove 8 screws around cabi top. (use "+" screw driver or electric motion driver) Samsung Electronics...
  • Page 12 1) Remove 2 screws (use "+" screw driver or electric motion driver) and lift up to take INSTALL off. GUARD COND 1) Take off the sensor. 2) Remove 4 screws. (use "+" screw driver or electric motion driver) Samsung Electronics...
  • Page 13 Disassembly and Reassembly Parts Procedure Remark CABI BACK RIGEHT 1) Take out the sensor wire through the holeon cabinet. 2) Remove 13 screws. (use ""+"" screw driver or electric motion driver) Samsung Electronics...
  • Page 14 Disassembly and Reassembly Parts Procedure Remark CABINET BACK INSTALL 1) Remove 2 scrwe. (using "+" screw driver or electric motion driver) CABI FRONT LF 1) Remove 10 screws. (using "+" screw driver or electric motion driver) Samsung Electronics...
  • Page 15 Procedure Remark FAN PROPELLER 1) Remove nut,take out the fan. (using wrench turn clockwise) MOTOR 1) Remove 4 screws,take off the motor. (using "+"screw driver or electric motion driver) 2) Pull out the connector on main pcb board. Samsung Electronics...
  • Page 16 Warning : Make sure the power is disconnected before work 2) Remove the screw that fix comp power wire. (using "+" screw driver or electric motion driver) 3) Remove the screw that fix comp power wire. (using "+" screw driver or electric motion driver) Samsung Electronics...
  • Page 17 (using "+" screwdriver or electric motion driver) b) Remove 2 screws that fix reactor wire. (using "+" screwdriver or electric motion driver) c) Remove 2 screws that fix reactor and pull up it. (using "+" screwdriver or electric motion driver) Samsung Electronics...
  • Page 18 PBA. e) Remove 2 screws that fix PBA CASE,and pull out assy fan motor diver PBA, d) Pull out the connector wire that's on MAIN PBA. e) Remove 4 screws that fix MAIN PBA,and pull out it. Samsung Electronics...
  • Page 19 Band the handel of the case and take off the assy inverter PBA. (Reffer right pic) Warning : Becareful when take off inverter pcb ;when reas- semble should ensure the silicon grease thin and even. 3-10 Samsung Electronics...
  • Page 20 Disassembly and Reassembly Parts Procedure Remark CONTROL BOX i) Pull out the connector wire that's on EMI PBA. j) Remove 4 screws that fix EMI PBA,and pull out it. (using "+" screwdriver or electric motion driver) Samsung Electronics 3-11...
  • Page 21 Remark CONTROL BOX 5) Remove 6 screws that fixing heat sink with control case. 6) Remove 5 screws that fixing control box with partition and bracket valve. 7) Then you can take off the whole control box. 3-12 Samsung Electronics...
  • Page 22 Warning : When removing the compressor,Heat Exchanger, and Pipe, purge the Coolant inside the Compressor com- pletely and remove the pipe with a welding flame. TUBE DISCHARGE 1) Separate 2 weld points by using a welder. (Tube discharge to oil separator&compressor) Samsung Electronics 3-13...
  • Page 23 Procedure Remark ASSY TUBE-OIL 1) Separate 2 weld points by using a welder . (1. Oil separator to 4way valve tube. SEPARATOR 2.Oil tube to suction tube.) 2) Remove 2 screws that fix oil separator on accumulator. 3-14 Samsung Electronics...
  • Page 24 2) Separate 2 weld points by using a welder (1.scution tube to comperessor. 2.tube vapor to comperessor.) 3) Remove 3 screws refer to the picture. - After ewmove screw on bracket valve, need to pall up it from patition Samsung Electronics 3-15...
  • Page 25 Disassembly and Reassembly Parts Procedure Remark ASSY COND 1) Remove 1 screw that fix partition. Remove 2 screws that fix cond. (Using "+" screwdriver or electric motion driver.) 3-16 Samsung Electronics...
  • Page 26 1) Remove felt top and felt side from comp- eressor. 2) Open cover power of comp,remove power wire. (using "+" screwdriver or electric motion driver) 3) Remove 3 screws on front of comp and 1 screw back of comp. Samsung Electronics 3-17...
  • Page 27 1) Separate 1 weld points by using a welder. (EEV tube to cond) 2) Separate 1 weld points by using a welder. (EEV tube to tube plate cooling) 3) Remove 2 screws fix assy eev tube on brack- et accumulator. Pull out assy tube-EEV. 3-18 Samsung Electronics...
  • Page 28 Disassembly and Reassembly Position of the sensor and Valve ■ VALVE & SENSOR ❷ Valve & Sensor ❶ 4WAY VALVE ❷ HIGH PRESSURE SENSOR ❸ HIGH PRESSURE SWITCH ❶ ❹ LOW PRESSURE SENSOR ❹ ❸ Samsung Electronics 3-19...
  • Page 29 Position of the sensor and Valve ■ VALVE & SENSOR Valve & Sensor ① ACCUM IN SENSOR INSULATION INSU CODE ❶ ❶ DB62-08752F ① ❷ DB62-08752F ❷ VALVE & SENSOR ① Valve & Sensor ① HOT GAS VALVE 3-20 Samsung Electronics...
  • Page 30 ❸ ⑥ DISCHARGE SENSOR ⑦ EVI OUT SENSOR ② ① INSULATION ⑦ ❷ INSU CODE ❶ DB62-08752D ❷ DB62-08752A ❸ DB62-08752B ❹ DB62-08752D INSULATION INSU CODE ❶ DB62-08752D ③ ④ ❷ DB62-08752A ❸ DB62-08752B ❹ DB62-08752D ❹ Samsung Electronics 3-21...
  • Page 31 4WAY+OIL SEPA ② DISCHARGE+OIL SEPA ③ DISCHARGE+COMP ④ EEV OUT+TUBE COOLING ⑤ TUBE COOLING+TUBE PHE IN ⑥ TUBE EVI+ACCUM ⑦ SUCTION+ACCUM ⑧ 4WAY+TUBE COONECTOR ⑨ TUBE CONNENCTOR+COND IN ⑩ SUCTION+COMP ⑪ VAPOR INJECTION+COMP ⑫ COND OUT+EEV IN 3-22 Samsung Electronics...

  • Page 32: Precaution When Replace The Compressor

    Leakage test by nitrogen gas and release all nitrogen gas from outdoor unit and evacuate again. Add an additional refrigerant to the system which was decided step 3. Open the service valve and choose Auto Trial Operation through pushing K1 switch in outdoor main PCB and hold 1 time. Samsung Electronics 3-23...
  • Page 33 ※ GB052* : 31.7kg / GB066* : 35.5kg / GB070 : 36.8kg (including oil 1200cc) ※ If broken compressor is 0.8kg or more lighter than new one, Oil return line is blocked. 2. Check the weight of oil lubricating part(Assy. accumulator, Assy. oil separator) 3-24 Samsung Electronics...
  • Page 34 If there is little oil in accumulator, oil may stay in Oil separator. Check brazing point 1. Blowing by nitrogen gas 2. Cut and see Cut & Nitrogen gas blowing * Brazing point check Ex) blocked by brazing substance. Samsung Electronics 3-25...
  • Page 35 Operation Status Heat Heat Error Code Capacity 22HP 22HP Target Frequency1 Order Frequency1 Current Frequency1 Target Frequency2 Order Frequency2 Current Frequency2 Check points High Pressure 23.6 24.6 Saturated T-Pd Low Pressure Saturated T_Ps Discharge1 53.1 Discharge2 53.5 62.7 3-26 Samsung Electronics...

  • Page 36: Eev Kit

    1) Separate 1 fixing screw from EEV kit. (Use + Serew Driver) 2) Separate cabinet from EEV kit. Control parts 1) Separate 2 fixing screws from EEV kit. (Use + Serew Driver) 2) Separate control part from EEV kit. Samsung Electronics 3-27...

  • Page 37: Service Operation

    4. Troubleshooting 4-1. Service Operation 4-1-1 Special Operation Samsung Electronics...
  • Page 38 Forced oil collection “K” “C” “BLANK” “BLANK” 9 times Inverter compressor check “K” “D” “BLANK” “BLANK” 10 times Fan 1 check “K” “E” “BLANK” “BLANK” 11 times Fan 2 check “K” “F” “BLANK” “BLANK 12 times End key operation Samsung Electronics...
  • Page 39 120 Hz → 1, 2, 0 compressor Master indoor unit not selected → BLANK , N , D 19 times Master indoor unit address If indoor unit No.1 is selected as the master unit → 0 , 0 , 1. Samsung Electronics...
  • Page 40 Communication error between indoor and outdoor unit (Installation number setting error repeated E-201 indoor unit address, indoor unit communication cable error). Communication error between indoor and outdoor unit(Communication error on all indoor unit, E-202 outdoor unit communication cable error). Samsung Electronics...
  • Page 41 Heating mode restriction due to high air temperature. E-441 Cooling mode restriction due to low air temperature. E-442 Refrigerant charging restriction in heating mode when air temperature is over 15°C. E-443 Operation prohibited due to low pressure. E-445 CCH is detached. Samsung Electronics...
  • Page 42 E-563 checked). E-573 Error due to using single type outdoor unit in a module installation. E(P)-702 Error due to closed EEV of indoor unit(1st detection). E(P)-703 Error due to opened EEV of indoor unit(1st detection). Trial operation uncompleted(Unprepared). Samsung Electronics...
  • Page 43 (The set temperature=3°C) (The set temperature=40°C) Outdoor fan and valves Normally control conduct Operation time Min : 60 minutes, Max : 10 hours Exceed the maximum operating time at stops and waits. Etc. Protection and control, self-diagnosis is performed. Samsung Electronics...
  • Page 44 Main EEV 2000 Step Maximum operation 30 minutes time Does not conduct the operation of the special operation, and protection control. Etc. Pressure and temperature is outside normal limits : Operation is shut down after gas pipe manually closed. Samsung Electronics...
  • Page 45 Press the K2 tact switch 3 times. How to initiate Discharge is complete, the power of the Inverter Etc. PCB is being blocked, communication function is blocked, E206 will occur. Samsung Electronics...
  • Page 46 Outdoor temperature is less than or equal to 10°C : heating auto trial operation. Oil recovery start Oil recovery start : It is after 10 minutes which safety start finishes. Etc. The outdoor unit will stop as a normal pattern after oil recovery operation for ten minutes. 4-10 Samsung Electronics...
  • Page 47 Guaranteed range of auto trial operation. - For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition. ■ Checklist before auto trial operation Outdoor temperature ( °C) - - - - Cooling mode ─── Heating mode Samsung Electronics 4-11...
  • Page 48 Press and hold the K1 tact switch 1 time. How to initiate Make sure to close the outdoor unit cabinet during operation. If you operate the unit with Etc. the front cabinet open, it may cause damage to the product. 4-12 Samsung Electronics...

  • Page 49: Appropriate Measures For Different Symptom

    ※ Whole system power reset - To solve the problem through the power reset after the address is reset the power reset of individual units is meaningless and the power of the whole system must be reset. Samsung Electronics 4-13...
  • Page 50 Operation Timer Turbo 24°C 27°C ◑ ◑ × × × ※ ● : ON ◑ : Flash ×: OFF Judgement Method • Communication error between indoor and outdoor units. Cause of problem • Refer the next page. 4-14 Samsung Electronics...
  • Page 51 PCB, and change the PCB. peculiarity, then connect the indoor units one by one to find the indoor unit that is interfering with the communication for inspection and change the indoor unit PCB. Samsung Electronics 4-15...
  • Page 52 Check the Main PCB : Main PCB TX circuit Is FAN PCB LD22, 32 Inspection flashes? * When performing the connector work, Please turn off the main power. Replace main PCB 4-16 Samsung Electronics...
  • Page 53 • C-Box internal Inverter PCB, Fan PCB, Hub PCB defective. Lighting of Fan PCB Check the connection status (CN12 connector) LD41 did confirmation? Is Fan PCB CN13 connector accurately Fan PCB CN13 connection. connected? Replace Fan PCB (Fan PCB TX part : Breakage) Samsung Electronics 4-17...
  • Page 54 Did the resistance value significantly stray Replace this since it is the defective of the outdoor from the following temperature sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the 12.1 18.0 27.3 43.0 4-18 Samsung Electronics...
  • Page 55 Did the resistance value significantly stray Replace this part as it is the defective of the from the following outdoor Cond Out sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the PCB 12.1 18.0 27.3 43.0 Samsung Electronics 4-19...
  • Page 56 Replace this part as it is the defective of value significantly stray the compressor discharge or top temperature from the following sensor itself. temperature table? Temperature(°C) Resistance(KΩ) 11.2 Restart operation after replace the PCB 18.5 32.0 59.0 4-20 Samsung Electronics...
  • Page 57 Re -insert sensor OR and re -attach sensor holder the sensor holder correctly attached? Is the discharge or top temperature sensor Defective sensor : Replace sensor. resistance value reasonable ? (Refer to E251) Complete Samsung Electronics 4-21...
  • Page 58 • Suction temperature sensor breakaway / defective. Is Suction sensor and sensor Holder Re-insert sensor OR and re-attach sensor holder. accurately attached? Is Suction sensor resistance value Defective sensor : Replace sensor. reasonable? (Refer to E231 ) Complete 4-22 Samsung Electronics...
  • Page 59 (Please check by connecting Refill refrigerant after vacuum the manifold gageto the service valve) Out of the PCB High Pressure sensor Replace PCB terminals, is there voltage between pins 3 and 4 5V? Replace High Pressure sensor Samsung Electronics 4-23...
  • Page 60 Refill refrigerant after vacuum the manifold gage to the service valve) Out of the PCB Low Pressure sensor terminals, is there Replace PCB voltage between pins 3 and 4 5V? Replace Low Pressure sensor 4-24 Samsung Electronics...
  • Page 61 Did the resistance value significantly stray Replace this part as it is the defective of the liquid from the following pipe temperature sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the PCB 12.1 18.0 27.3 43.0 Samsung Electronics 4-25...
  • Page 62 Did the resistance value significantly stray Replace this part as it is the defective of the liquid from the following pipe temperature sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the PCB 12.1 18.0 27.3 43.0 4-26 Samsung Electronics...
  • Page 63 Did the resistance value significantly stray Replace this part as it is the defective of the from the following outdoor EVI in temperature sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the PCB 12.1 18.0 27.3 43.0 Samsung Electronics 4-27...
  • Page 64 Did the resistance value significantly stray Replace this part as it is the defective of the from the following outdoor EVI out temperature sensor itself. temperature table? Temperature(°C) Resistance(KΩ) Restart operation after replace the PCB 12.1 18.0 27.3 43.0 4-28 Samsung Electronics...
  • Page 65 Remark Measure More than 3 MΩ the resistance values Measurement error can occur for reasons such as the initial mea- surement condenser discharge. Measured over at least three times. Measure the diode 0.3 ~ 0.7V voltage values Samsung Electronics 4-29...
  • Page 66 (U ↔ V,V ↔ W,W ↔ U) less than 10Ω ? Is the resistance between the body of Replace Fan Motor. Fan Motor and chassis MΩ? Does the compressor Check the connection wire. connection wire properly connect? Replace Fan PCB 4-30 Samsung Electronics...
  • Page 67 ※ ● ◑ : ON : Flash ×: OFF Judgement Method • Refer the next page • If there is no problem after checking the connection status between fan motor Cause of problem and PBA, replace the PBA. Samsung Electronics 4-31...
  • Page 68 If you rotate the fan by Replace f an motor hand, the noise occurs? Connection wire of Fan Motor did confirmation ? Check the connection status, and then restart. (Check the connection status of the Fan1 and Fan2.) Replace Fan PCB 4-32 Samsung Electronics...
  • Page 69 Fan Motor did confirmation ? (Verify Check the connecting wire and restart it. that the wire folded, or the connection is detached .) Is there anything strange in Replace Fan PCB appearance Fan Motor? Replace Fan Motor Samsung Electronics 4-33...
  • Page 70 Is the bolt of the heat Tighten Bolt sink fully tightened? Did check the foreign Remove foreign objects and apply the heat sink objects between the grease and then reassembly heat sink and IPM? Complete 4-34 Samsung Electronics...
  • Page 71 Outdoor Fan Motor. Fan Motor and chassis MΩ? Does the Fan Motor connection wire Check the connection wire properly connect to the (Check the status of the connection U V W ) compressor? FAN Replace PCB . Samsung Electronics 4-35...
  • Page 72 (Verify that the wire folded, or the connection is detached.) HALL IC on the PCB is Check the connecting wire and restart it. connected correctly? Replace Fan PCB. Restart. When the error is repeated, replace the Fan Motor. 4-36 Samsung Electronics...
  • Page 73 • Input voltage defective Cause of problem • PCB voltage sensing circuit defective Power Off Is Power connection Power Cable re -connection accurately connected? E -393 / E -493 E -468 / E -485 Replace Fan PCB Replace Inverter PCB Samsung Electronics 4-37...
  • Page 74 Did the Fuse is short ? Replace Fuse. Is EMI PCB and Inverter PCB accurately Power Off and then re -connection. connected? Is Inverter PCB and Fan PCB DC -Link Replace Fan PCB voltage connection wire accurately connected? Replace Inverter PCB. 4-38 Samsung Electronics...
  • Page 75 Duct, Cassette (1/2 Way), Console, Ceiling Operation Timer Turbo 24°C 27°C ◑ ◑ × × × ※ ● ◑ : ON : Flash ×: OFF Judgement Method • Refer the next page Cause of problem • Replace FAN PBA. Samsung Electronics 4-39...
  • Page 76 • Outdoor heat exchanger is contaminated. • Service valve locked/Fill refrigerant Cause of problem Heating Operation • Outdoor unit fan motor problem (constrained, defective) • Motor driver defective or wire is cut • Service valve locked/Excessive refrigerant 4-40 Samsung Electronics...
  • Page 77 • Leakage of compressor discharge check valve of not-go-end outdoor unit • Error may be found when used in temperature range outside the conditions of use (Operating outside temperature at -20°C or less for heating and operating outside temperature at -5°C or less for Cooling) Samsung Electronics 4-41...
  • Page 78 Pipe inspection (filter etc.) Is there any leakage in the Liquid Pipe Valve or the discharge check Replace Low Pressure sensor valve of the not-go-end Outdoor Unit when only some Outdoor Units are operating? Check the refrigerant amount. 4-42 Samsung Electronics...
  • Page 79 • Electronic expansion valve is blocked. • Service valve blocked Cause of problem • Defective discharge temperature sensor • TOP temperature sensor defective • Blocked pipe and defective • Leakage of compressor discharge check valve of not-go-end outdoor unit Samsung Electronics 4-43...
  • Page 80 Are all service valves Open the Service Valve open? Are the Indoor Unit and Outdoor Unit EEV Check the relevant EEV normally operating ? Are there any blockage inside the Pipe inspection pipe? ( filter etc.) Check the refrigerant amount. 4-44 Samsung Electronics...
  • Page 81 If the phase does not connect the power(no phase) : E425 or E466 (E366) is dis- Judgement Method played (Air conditioner to maintain the normal state.) • However) N-phase must be properly connected. • Check the input wiring Cause of problem • EMI Fuse short. Samsung Electronics 4-45...
  • Page 82 Did the EMI PCB Fuse Replace Fuse, if the rectifier diode of the inverter is short? PCB is normal. Is EMI PCB CN21 connector and Inverter Connection and then restart it PCB accurately connected? Replace Inverter PCB 4-46 Samsung Electronics...
  • Page 83 • Differential pressure (high pressure - low pressure) less than 0.4 MPa.G and lasts for 10 minutes or more • Indoor and Outdoor EEV breakdown • 4Way Valve breakdown Cause of problem • High and Low pressure sensor defective • Refrigerant shortage Samsung Electronics 4-47...
  • Page 84 Gauge value in range? Are the 4Way Valve Check the 4Way Valve normally operating ? Are the indoor unit and outdoor unit EEV Check the relevant EEV normally operating? Is current of Compressor inspection compressor normally? Check the refrigerant Complete 4-48 Samsung Electronics...
  • Page 85 • DSH <10 °C, EVI Out-in <= 0°C & frequency> 65Hz 40 minutes maintaining • EVI EEV and Intercooler leakage, excessive refrigerant amount, Outdoor Check Valve inserted opposite. Cause of problem • Indoor Unit EEV leakage, direct connection between Indoor Liquid Pipe and the Gas Pipe. Samsung Electronics 4-49...
  • Page 86 Replace Intercooler leakage. Normal Breakdown Check the Indoor Unit Replace Indoor Unit EEV EEV leakage Normal Check the connection Breakdown for Indoor Unit Pipe Reinstall pipe (Connect liquid pipe - gas pipe directly) Normal Check the refrigerant 4-50 Samsung Electronics...
  • Page 87 (Please check by Refill refrigerant after vacuum connecting the manifold gauge to the service valve) Out of the PCB pressure sensor terminals, is there Replace PCB voltage between pins 3 and 4 5V? Replace Low Pressure sensor Samsung Electronics 4-51...
  • Page 88 • Heating operation : When the outdoor temperature is more than 30 °C Judgement Method • Cooling operation : When the outdoor temperature is less than -15 °C Cause of problem • System protection operation status (Is not breakdown) 4-52 Samsung Electronics...
  • Page 89 ※ ● ◑ : ON : Flash ×: OFF • When the heating refrigerant change : If the outdoor temperature is more Judgement Method than 15°C. Cause of problem • System protection operation status (Is not breakdown) Samsung Electronics 4-53...
  • Page 90 fixed in correct position? Is CCH resistance normal? ( 500~700 Ω / Change CCH. infinite for disconnection ) Does the E445 error occur even after Normal Operation. the outdoor unit power is put back in? Change PCB. 4-54 Samsung Electronics...
  • Page 91 Replace Compressor Compressor and chassis MΩ? Does the Compressor connection wire Check the connection wire (Check the status of the connection U V W ) properly connect to the compressor? Replace Inverter PCB Samsung Electronics 4-55...
  • Page 92 Replace Compressor. Compressor and chassis MΩ? Does the Compressor connection wire Check the connection wire (Check the status of the connection U V W ) properly connect to the compressor? Replace Inverter PCB. 4-56 Samsung Electronics...
  • Page 93 R , S, T wire? Did the EMI PCB Fuse Replace Inverter PCB and then restart it. is short? * Check the 3 -phase sensing circuit part. Replace Fuse, if the rectifier diode of the inverter PCB is normal. Samsung Electronics 4-57...
  • Page 94 • DC-Link Overvoltage / Low voltage occurs. • Check the input wiring Cause of problem • EMI Fuse short Power Off Is Inverter PCB CN15 and Fan PCB CN11 DC-Link Connection and then restart it. voltage connection wire accurately connected? Replace Fan PCB 4-58 Samsung Electronics...
  • Page 95 Did check the foreign Remove foreign objects and apply the thermal objects between the grease and then reassembly. heat sink and IPM? Did properly apply the Apply the thermal grease and then reassembly. thermal grease ? Complete Samsung Electronics 4-59...
  • Page 96 : Change the setting after replace. Is the outdoor unit EEPROM accurately Connect outdoor unit EEPROM and then reset. connected to connector? Download relevant model EEPROM and then reset. ※ Execute automatic commissioning for UP cancellation after EEPROM download. 4-60 Samsung Electronics...
  • Page 97 Power On Does connected indoor unit become Replace the indoor unit that is compatible with the compatible with DVM INV. DVM inverter? Is software version of indoor unit since July, Software upgrade. 2011 ? Replace indoor unit PCB. Samsung Electronics 4-61...
  • Page 98 Download relevant model EEPROM and then reset. Outdoor unit single type exclusive use model (non -modular model), can not be module * Execute automatic commissioning for UP installation. ( single type only installation) cancellation after EEPROM download. 4-62 Samsung Electronics...

  • Page 99: Pcb Diagram And Part List

    5. PCB Diagram and Part List 5-1 MAIN Refer the next page When replace the MAIN PBA, remove the EEPROM from the exi*ting MAIN PBA and in*ert it at the new MAIN PBA. Samsung Electronics...
  • Page 100 CN70-AC POWER CN704-HOT GA* BYPA** 1 CN55-COMM PBA LIVE NEUTRAL LIVE CN714-CCH 1 OUT NEUTRAL CN71-HIGH PRE**URE */W NEUTRAL LIVE CN701-EVI VALVE 1 CN708-4WAY VALVE NEUTRAL Valve LIVE CN901-DRED NEUTRAL DRED1 CN703-EVI BYPA** 1 DRED2 LIVE DRED3 NEUTRAL Samsung Electronics...
  • Page 101 PCB Diagram and Parts List MAIN (cont.) Samsung Electronics...
  • Page 102 CN91 – INV COMM EEV1 *IGNAL 2 COND OUT *EN*OR EEV1 *IGNAL 3 INV-*MP* EEV1 *IGNAL 4 AMBIENT *EN*OR COMM-OUT CN44-*UCTION, EVI-IN, OUT *EN*OR CN45-LIQUID *EN*OR *UCTION *EN*OR LIQUID *EN*OR EVI IN *EN*OR DI*CHARGE *EN*OR 2 EVI OUT *EN*OR Samsung Electronics...

  • Page 103: Inverter

    PCB Diagram and Parts List 5-2 Inverter □ MODEL : AM100/120BXMWGH Samsung Electronics...
  • Page 104 RX-DOWN CN701 - REACTOR2 * PHA*E TX-DOWN REACTOR2 T - INPUT T PHA*E BOOT CN91 - FAN DC T PHA*E 18 V 5 V-FAN AD-*ELECT CN15 - FAN DC LINK DC 540 V 11 - 20 Not u*e Samsung Electronics...

  • Page 105: Emi

    CN41-EARTH AC LIVE EARTH (PE) CN101-R IN AC NEUTRAL R-IN CN102-* IN AC NEUTRAL *-IN CNCN108-HUB 220 V CN103-T IN AC LIVE T-IN CN104-N IN N-IN CN42-EARTH EARTH (PE) CN105-R OUT R-OUT CN106-* OUT *-OUT CN107-T OUT T-OUT Samsung Electronics...

  • Page 106: Fan

    PCB Diagram and Parts List 5-4 Fan □ MODEL : AM100/120BXMWGH Samsung Electronics...
  • Page 107 GND-MAIN RX-DEBUG 12 V-INV U1-V1-W1 TX-DEBUG INV *MP* RELAY-INV BOOT COMM-INV FAN1-U GND-INV FAN1-V CN101-FAN2 HALL *EN*ING FAN1-W CN401-POWER HALL - U DC 540 V HALL - V U2-V2-W2 HALL - W FAN2-U MOTOR - TEMP FAN2-V FAN2-W Samsung Electronics...

  • Page 108: Communication

    PCB Diagram and Parts List 5-5 Communication De*cription TB-COMM 5-10 Samsung Electronics...

  • Page 109: Wiring Diagram

    Wiring Diagram 6. Wiring Diagram 6-1 AM100/120BXMWGH This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 110: Cycle Diagram

    7. Cycle Diagram 7-1 AM100BXMWGH/EU 7-2 AM120BXMWGH/EU Samsung Electronics...

  • Page 111: Cycle Component Function Explanation

    25. Control box temp. Sensor : Control box internal temperature measurement, thermal protection used for the control. 26. Receiver : Storing the refrigerant piping system, a stable liquid refrigerant supply 27. Liquid Tube Valve : Refrigerant in the outdoor unit side, the indoor unit during heating operation to rotate the valve operation. Samsung Electronics...

  • Page 112: Key Options

    ■ Setting outdoor unit key function Switch Setting Function Remarks Not applicable Enable maximum capacity restriction Restrict excessive capacity increase when for cooling operation operating indoor units with small capacity Disable maximum capacity restriction SW53 for cooling operation Not applicable Not applicable Samsung Electronics...
  • Page 113 - If you press and hold the K4 button, setting will be restored to factory default but it doesn't mean that restored setting is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress, setting will be saved. Samsung Electronics...
  • Page 114 LEVEL 1/ External contact Main night- time However, if the external contact LEVEL 2/ External interface module (MIM-B14) is used, contact entering the silent mode is available LEVEL 3/ External with contact signal in cooling and contact heating mode. Samsung Electronics...
  • Page 115 (operating for up to is possible even if an indoor communication error 12hours) communication error occurs. Indoor low humidity condition (operating for up to 24hours) Disabled Base Heater Main Enabled Unused Main Unused option Unused option by this model option Samsung Electronics...
  • Page 116 Auto Change Over Main units, change the operation mode. Applied ※ Unused by the cooling only models ※ There is a risk of water leakage during emergency operation for indoor unit communication error. Please be careful when using it. Samsung Electronics...
  • Page 117 ※ When there were error, 'Discharge mode of DC link voltage' may not have been effective. Especially if error E464 has been occurred, power element might be damaged by fire and therefore, do not use the 'Discharge mode of DC link voltage'. ※ During "Discharge mode of DC link voltage", voltage of INV will be displayed. Samsung Electronics...
  • Page 118 HR Changer/MCU Unit Address (ex) 07) : C, 1 SEG 1,2 SEG 3,4 Manually assigned 5 times MANU address of the units Indoor unit: A , 0 Address (ex) 15) Press and hold (for 2 sec.) Key operation ends Samsung Electronics...

  • Page 119: Reference Sheet

    Model grade Standard + General temp. + Non module 380 ~ 415 V, 50 Hz, 3 Phase Power 380 V, 60 Hz, 3 Phase Mode Heat pump (R410a) CHINA EUROPE PHILIPPINES Buyer INDIA TURKEY MIDDLE EAST SAUDI ARABIA Samsung Electronics...
  • Page 120 © Samsung Electronics Co., Ltd. April. 2022. 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-00304E_1...

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