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Samsung AG042KSVANH Service Manual

System air conditioner dvm chiller.
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DVM CHILLER
SYSTEM AIR CONDITIONER
DVM CHILLER
AG042KSVANH/AG056KSVANH/AG070KSVANH
AG042KSVGNH/AG056KSVGNH/AG070KSVGNH
CONTENTS
1. Precautions
2. Product Features and Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Parts List
6. Wiring Diagram
7. Cycle Diagram
8. Key Options
9. Trial Operation

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Table of Contents

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   Summary of Contents for Samsung AG042KSVANH

  • Page 1 SYSTEM AIR CONDITIONER DVM CHILLER AG042KSVANH/AG056KSVANH/AG070KSVANH AG042KSVGNH/AG056KSVGNH/AG070KSVGNH DVM CHILLER CONTENTS 1. Precautions 2. Product Features and Specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagram and Parts List 6. Wiring Diagram 7. Cycle Diagram 8. Key Options 9. Trial Operation...
  • Page 2 DVM CHILLER derived model status Application division Derived models Non-built pump AG042KSVANH/EU AG056KSVANH/EU AG070KSVANH/EU Built pump AG042KSVGNH/EU AG056KSVGNH/EU AG070KSVGNH/EU...
  • Page 3: Table Of Contents

    Contents 1. Precautions ..............................................1-1 Precautions for the Service ......................................1-2 Precautions for the Static Electricity and PL ................................1-3 Precautions for the Safety ......................................1-4. Precautions for Handling Refrigerant of the DVM CHILLER ......................... 1-5. Precautions for Welding the DVM CHILLER Pipe .............................. 2.
  • Page 4 Contents 4-3-26. EVI EEV opening error ....................................66 4-3-27. Refrigerant leakage error ................................... 67 4-3-28. Prevention of heating operation due to outdoor temperature ..................... 68 4-3-29. Fan starting error ......................................69 4-3-30. Fan lock error ........................................71 4-3-31. Momentary blackout error ..................................72 4-3-32.
  • Page 5: Precautions

    1. Precautions 1-1 Precautions for the Service Use the correct parts when changing the electric parts. – Please check the labels and notices for the model name, proper voltage, and proper current for the electric parts. Fully repair the connection for the types of harness when repairing the product after breakdown. –...
  • Page 6: Precautions For Handling Refrigerant Of The Dvm Chiller

    1-4. Precautions for Handling Refrigerant of the DVM CHILLER Environmental Cautions: Air pollution due to gas release Safety Cautions If liquid gas is released, then body parts that come into contact with it may experience frostbite/blister/numbness. If a large amount of gas is released, then suffocation may occur due to lack of oxygen. If the released gas is heated, then noxious gas may be produced by combustion.
  • Page 7: Product Features And Specifications

    2. Product Features and Specifications 2-1 Product Features 2-1-1 Major Advantages of Product DSI System • Dual Smart Inverter: SSC + SSC • BLDC Inverter Motor (14~160 Hz) • 3 generation Vapor Injection (maximization of low temperature heating performance) Inverter-based...
  • Page 8: Control Logic

    ■ Control Logic 1) Simultaneous operation control Individual capacity control based on Water Out Sensor equipped inside each Unit Running the capacity control runs all the Units inside the module to control the capacity. When approaching Start OPERATION the configured temperature Capacity control Thermo Off Capacity control...
  • Page 9 Feature (cont.) ■ Inverter circuit refrigerant cooling technology ▶ Applied high efficiency refrigerant cooling circuit. Secured stable Inverter PCB cooling performance. - Air cooling method : When natural convection / electric heat performance is low and is high load, efficiency is fallen. - Refrigerant cooling system : Forced circulation / electric heat performance is high and control of (thermal conductivity is 10 times higher than air) load is available.
  • Page 10: Changes In Comparison To Dvm S

    2-1-2. Changes in comparison to DVM S Changed part Changed item and feature Basic Revision - Producing hot water & cold water by using plate type heat exchanger. - Control specification for freeze prevention(the application of the Hydro water temperature/the pressure sensor).
  • Page 11 Changes in comparison to DVM S (cont.) Changed part Changed item and feature Basic Revision PF No. 8 Inverter controller. ← InverterPCB (Compressor control PCB) ← PF No. 9 Inverter controller. Control Box Communication Communication terminal block ← (Inverter) mounted on the PCB. terminal block Small capacity.
  • Page 12: Structure Of Product (h/p)

    2-1-3. Structure of product (H/P) Hydro control Inverter control Control Box (Hydro Side) Control Box Air side Heat Exchanger (Inverter) Water Side Heat Exchanger Receiver Water Temp. sensor Accumulator Water Pressure sensor Compressor Water inlet Water outlet Sub-cooler Oil separator Pump built in model only Hydro control Inverter control...
  • Page 13: Product Specifications

    2-2. Product Specifications 2-2-1. Specifications MODEL AG042KSVANH/EU AG056KSVANH/EU AG070KSVANH/EU Mode HEAT PUMP HEAT PUMP HEAT PUMP Power Supply Φ,#,V,Hz 3,4,380-415,50/60 3,4,380-415,50/60 3,4,380-415,50/60 Performance Cooling 42.0 56.0 65.0 Capacity (Nominal) Heating 42.0 56.0 69.5 Cooling 12.35 18.67 26.00 Power Input Heating 11.83...
  • Page 14 Specifications (cont.) MODEL AG042KSVGNH/EU AG056KSVGNH/EU AG070KSVGNH/EU Mode HEAT PUMP HEAT PUMP HEAT PUMP Power Supply Φ,#,V,Hz 3,4,380-415,50/60 Performance Cooling 42.0 56.0 65.0 Capacity (Nominal) Heating 42.0 56.0 69.5 Cooling 13.59 * 20.14 * 28.26 * Power Input Heating 12.77 * 18.48 * 25.84 * Cooling...
  • Page 15: 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...
  • Page 16: Disassembly And Reassembly

    3-2 Disassembly and Reassembly 3-2-1. AG042/056/070KSV Parts Procedure Remark Electrical Remove 24 screws from the Cabinet. (Use + Screw Driver) equipment parts Remove the 8 screws and then separate the left side Cover Control Box of Hydro part and right side Cover Control Box of Inverter part.
  • Page 17 Parts Procedure Remark 4) When replacing the Power Terminal Block and Communication Terminal Block, remove the 2 screws which is fixed to Terminal Block Cover. 5) Remove the 4 screws which is fixed to Cabinet for Terminal Block protection and then remove the 2 screws from the Terminal Block.
  • Page 18 Parts Procedure Remark 7) Remove the 12 screws from the outside of side refrigerant cooling part. Do not separate Heat Sink pulling Assy Piping Cooling piping compulsorily. (It can be a cause of parts damage) 8) Remove the 2 screws from the inside of side refrigerant cooling part.
  • Page 19 Parts Procedure Remark Hydro part Control Box 9) Remove the 4 screws from the front part. Hydro part 10) Remove the 4 screws which is fixed to Bracket Tube. 11) Remove the 4 screws which is fixed to Bracket Hydro part. 12) Remove the 2 screws securing the coupling points.
  • Page 20: Service Work Of Main Parts

    3-3 Service work of main parts 3-3-1. Water Pump 3-3-1. Water Pump (Pump built in model only) 1) Power off before starting on work. 2) Close the valve connected to inlet/outlet of main water pipe. 3) Drain all water of water pipe connected to DVM CHILLER. 4) Unscrews the screw of inlet/outlet water pipe flange connected to DVM CHILLER.
  • Page 21 13) Separates the fixed screw of pump terminal. (using - screw driver or exclusive tool) 14) Connect power wire to terminal as a existing assembly condition. Connection mothod of pump have Y-connection & Delta connection method. This model must be connected by Y-connection method because it uses 3-Phase high boltage power.
  • Page 22: Temperature Sensor & Pressure Sensor In The Water Pipe Side

    3-3-2. Temperature sensor & Pressure sensor in the water pipe side - Exchange method of the water temperature sensor 1) Power off before starting on work. 2) Unscrews the fixed screw of CABINET FRONT and C-BOX. 3) Separate the connector from PBA 4) Separate Insu protecting the temperature sensor.
  • Page 23 - Exchange method of the pressure sensor 1) Power off before starting on work. 2) Close the valve connected to inlet/outlet of main water pipe. 3) Drain all water of water pipe connected to DVM CHILLER. 4) Unscrews the fixed screw of CABINET FRONT and C-BOX. 5) Separate the connector from PBA.
  • Page 24: Plate Type Heat Exchanger Phe

    3-3-3. Plate type heat exchanger PHE 1) Power off before starting on work. 2) Close the valve connected to inlet/outlet of main water pipe. 3) Drain all water of water pipe connected to DVM CHILLER. 4) Unscrews the screw of inlet/outlet water pipe flange connected to DVM CHILLER.
  • Page 25 9) Unscrew the screw of coupling connecting the two PHE in series. 10) Separate 6 screws of Bracket fixing ASSY PHE. 11) Please reassemble in reverse order of disassembly. - Bolt torque at time of coupling tightening : 200±10% kgfcm...
  • Page 26 Binding Wire1 ■ AG042/056/070KSV Series Cable Tie Holder Wire Etc. location Specifications Used parts Binds a EEV, Pressure sensor, Temperature sensor, Water temperature sensor by Cable-Tie. 6501-001110 (L200) : Binds a High pressure switch, Oil return valve by Cable-Tie using Insu. Cable Tie Binds a High pressure sensor, EVI, Hot gas valve by Cable-Tie using Insu.
  • Page 27 Binding Wire2 ■ AG042/056/070KSV Series Cable Tie Holder Wire Etc. location Specifications Used parts Binds a Vapor injection valve, High-voltage switch, Oil return valve, High pressure sensor, EVI, Hot gas valve by Cable-Tie using Insu. 6501-001110 (L200) : Cable Tie Binds a Low pressure sensor , Temperature sensor bundle by Cable-Tie.
  • Page 28 Binding Wire3 ■ AG042/056/070KSV Series Cable Tie Holder Wire Etc. location Specifications Used parts Binds a Sub cooler temperature sensor 2 kinds by Cable-Tie. 6501-001107 (L368) : Cable Tie Binds a EEV coil, Cond out temperature sensor, Sub cooler temperature sensor 3 kinds, Oil return valve by Cable-Tie.
  • Page 29 Binding Wire4 ■ AG042/056/070KSV Series Binds a Comp wire by Holder wire. Binds a Comp wire-core to Bracket beam control box using large size Cable- Tie(350mm). Code SPEC Q'ty 6002-001149 Remove the 3 screws and separate the connector and then separate the double layer structure of Control Box.
  • Page 30: Reference Sheet

    [Reference Sheet] Pipe Welding Position ■ AG042/056/070KSV Series Front welding part 2 All model's pipe welding position is same. Welding Position Q'ty Comp + Discharge Comp + Suction Comp + Vpaor Injection Oil Sepa Out + 4way Oil Sepa Out + Hot Gas 4Way + Hot Gas Sution + Oil Return Vapor Injection + EVI Bypass...
  • Page 31 [Reference Sheet] Pipe Welding Position ■ AG042/056/070KSV Series Front welding part 2 All model's pipe welding position is same. Welding Position Q'ty Accum Oil Retrun valve + Suction 4Way + Assy Phe In 4Way + Cond In EEV + Assy Phe Out...
  • Page 32 [Reference Sheet] Pipe Welding Position ■ AG042/056/070KSV Series Rear welding part All model's pipe welding position is same. Welding Position Q'ty Discharge + Oip sepa Tank Suction + Accum Receiver Tank + Receiver Tube Receiver Tube + Cooling Cooling + EEV Accum + EVI Bypass EVI Bypass + Subcooler Subcooler + EEV...
  • Page 33: Troubleshooting

    4. Troubleshooting 4-1 Check-up Window Description Hydro control Inverter control ③ ⑤ ⑩ ⑬ ③ ⑨ ⑭ ⑮ ② ⑯ ⑧ ⑲ ⑰ ⑦ ① ⑱ ⑥ ⑳ ① ⑥ ② ⑦ ⑧ ④ ⑨ ⑫ ⑩ ⑪ ④ ⑤ Function Function Function...
  • Page 34: Service Operation

    4-2. Service Operation 4-2-1. Special Operation ▶ Key input of the outdoor unit when the service enters the operation mode. K1 (Number of press) KEY operation Display on 7-Segment 1times Refrigerant charging in Heating mode “ ” “ ” “ ” “ ” 2times Trial operation in Heating mode “...
  • Page 35 □ Trial Operation ▶ After initial installation, stable operation for a certain period of time limited to operation conditions. Cooling Heating Method of Entry K2 Tact Switch 2times K1 Tact Switch 2times Compressor Normal operation, but the maximum frequency limit (differ by model) Fan and Valves Normally control conduct Operation time...
  • Page 36 □ Forced defrost operation ▶ Forced defrost operation : Is operation when Frost Formation occurs in the outdoor. (When carried out the service) Method of Entry K2 Tact Switch 7 times Start pattern Heating Trial Operation pattern Defrost start Defrost start : It is after 10 minutes which Safety Start finishes. Defrost off General defrost operation conditions are the same as.
  • Page 37: Dvm Chiller Eeprom Code Table By Models

    * This work only when communication is normal. 4-2-3. Option code by model classification Item Model Remark 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 AG042KSVANH 0 0 D 2 2 A 2 A 3 Non-built AG056KSVANH 0 pump...
  • Page 38: Number Display Method

    4-2-4. Number Display Method How to Display Integrated Error Code Meanings of First Alphabetical Character / Number of Error Code ▶ DISPLAY Explanation When displaying Error 101~700 Displays address of subordinate within the set When E206 occurs C001 : HUB, C002: FAN, C003: INV1, C004: INV2 When displaying outdoor unit address Ex) U200: Outdoor unit 1, U201: Outdoor unit 2, U202: Outdoor unit 3, U203: Indoor unit 4 When displaying indoor unit address...
  • Page 39 □ Error display(Error Code) ▶ Segment will display error code (4 digit). HYDRO-UNIT_MODULE_CHILLER 88-SEG DISPLAY Display Description Communication error between hydro controller and inverter controller (If not received for 3 minutes from outdoor unit) Error due to repeated setting address Communication error of hydro controller address not complete Error on hydro Evap in Sensor (Open/Short) Error on hydro Evap out Sensor (Open/Short)
  • Page 40 □ Error display(Error Code) Display Description Error on double layer pipe sensor (Short or Open) EVI inlet temperature EVI outlet temperature Error on Suction 2 sensor (Short or Open) Error on Total suction sensor (Short or Open) Operation failure of Fan2 Unconnected error of Fan2 Lock error on Fan2 Overheated motor of Fan2...
  • Page 41 □ Error display(Error Code) Display Description INV1 DC Link sensor error INV1 Data Flash error INV1 IPM Heat Sink error Error due to overcurrent of Fan1 Error due to special overcurrent of Fan1 INV1 input current error Error due to over voltage/low voltage of Fan1 Fan1 Hall IC error Outdoor Fan1 overload OFF Fan1 DataFlash error...
  • Page 42: Appropriate Measures For Symptoms

    4-3. Appropriate measures for symptoms 4-3-1. Reversed phase / No phase check (Outdoor unit with 3 phase power) – display 1. When the power is on, check the status of the power from the inverter. Three-phase L1(R)-L2(S)-L3(T) order, regardless of the power connection on the inverter does not phase power (no phase) can occur. In this case, E425 or E466 (E366) is displayed, and then air conditioner will then maintain normal conditions.
  • Page 43 □ Initial tracking (Communication check-up) - display The outdoor unit Micom attempts communication with the inverter control part connected to the communication wire (F1/F2) when the power is turned on. Basic segment display b c e d b c e d SEG1 SEG2 SEG3...
  • Page 44: Main Pcb Has No Power Phenomenon

    4-3-2. Main PCB has no power phenomenon Inverter / Hydro control part display Main PCB has no power phenomenon (7-seg does not blink) Judgment Method Hub PCB power and connection wire to detect. 1) HUB PCB connector wire defects and disconnection. 2) Main PCB defective.
  • Page 45: Communication Error Between Hydro And Outdoor Unit During Tracking

    4-3-3. Communication error between hydro and outdoor unit during tracking Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Communication error between indoor and outdoor units. 1. Inspection Method Check the communication cable which connects the hydro to the outdoor unit.
  • Page 46 Essential check point before PCB replacement in case of communication error. 1. Find a communication IC nearby communication terminal. Hydro control part 1 - Communication IC between Hydro control part and inverter control part 2 - Commuincation IC between wired remote controller Inverter control part 3 - Communication IC between inverter control part and hydro control part 4 - Communication IC between inverter control part and high level controller...
  • Page 47: Communication Error Between Indoor And Outdoor Unit After Tracking

    4-3-4. Communication error between indoor and outdoor unit after tracking Inverter / Hydro control part display Judgment Method If the hydro and outdoor unit is unable to communicate for 2 minutes during operation. Cause of problem Communication error between hydro and outdoor unit. 1.
  • Page 48: Internal Communication Error Of The Outdoor Unit C-box

    4-3-5. Internal communication error of the outdoor unit C-Box Inverter / Hydro control part display Judgment Method Communication error between the C-Box PCB ∙ Communication wire inside the C-Box is unconnected Cause of problem ∙ Main PCB defective 1. Inspection Method Restart operation after connecting the Inverter Did the Communication connector PCB2 CN31(when the Comp.
  • Page 49: Internal Pcb Communication Error Of The Outdoor Unit C-box

    4-3-6. Internal PCB communication error of the outdoor unit C-Box Inverter / Hydro control part display Judgment Method PCB does not respond to the invoked Main PCB Cause of problem C-Box internal Inverter PCB, Fan PCB, Hub PCB defective 1. Inspection Method E206 C001 Connection wire of Hub PCB/Main PCB did confirmation?
  • Page 50 Internal PCB communication error of the outdoor unit C-Box (cont.) E206 C003/C004 Check the connection status Lighting of INV PCB LD11 did confirmation? (CN91 connector) Is INV PCB CN32 connector accurately connected? CN32 connector connection Replace INV PCB (INV PCB TX part : Breakage)
  • Page 51: Outdoor Temperature Sensor Error

    4-3-7. Outdoor temperature sensor error Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Outdoor temperature sensor Open / Short is defective. 1. Inspection Method Did the outside temperature sensor connector break away from the PCB? Restart operation after connecting the connector to the PCB.
  • Page 52: Cond Out Temperature Sensor Error (open / Short)

    4-3-8. COND OUT temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method COND Did the outdoor Cond Out sensor connector break away from the PCB? Restart operation after connecting...
  • Page 53: Outdoor Unit Cond Out Sensor Breakaway Error

    4-3-9. Outdoor unit COND OUT sensor breakaway error Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Outdoor unit COND OUT sensor breakaway / defective / relevant path blocked. 1. Judgment Method 1) No inspection for Cooling operation.
  • Page 54: Compressor Discharge Or Top 1/2 Temperature Sensor Error

    4-3-10. Compressor discharge or TOP 1/2 temperature sensor error (Compressor 1 Discharge) (Compressor 2 Discharge) Inverter / Hydro control part display (Compressor 1 TOP) (Compressor 2 TOP) Judgment Method Refer to the inspection method below. Cause of problem Compressor discharge or TOP temperature sensor defective. (Open / Short) 1.
  • Page 55: Compressor Discharge Or Top Temperature Sensor Breakaway Error

    4-3-11. Compressor discharge or TOP temperature sensor breakaway error (Compressor 1 Discharge) (Compressor 2 Discharge) Inverter / Hydro control part display (Compressor 1 TOP) (Compressor 2 TOP) 1) Relevant compressor frequency of 60Hz or higher. 2) Suction temperature > Low pressure saturation temperature +10 Judgment Method 3) Relevant discharge or Top temperature <...
  • Page 56: E269 : Suction Temperature Sensor Breakaway Error

    4-3-12. : Suction temperature sensor breakaway error Inverter / Hydro control part display Difference of suction temperature of compressor starting verge and suction temperature that is on present operation : Judgment Method If less than 2 for 30 minutes to keep. (Judgment at heating operation only) Cause of problem Suction temperature sensor breakaway / defective.
  • Page 57: High Pressure Sensor Error (open / Short)

    4-3-13. High pressure sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. High Pressure sensor Open/Short error determination method 1) Identifies from when power is supplied or 2 minutes after RESET, and only when set is stopped. 2) An Open/Short error will occur if the input voltage standard range of 0.5V ~ 4.95V is exceeded.
  • Page 58: Low Pressure Sensor Error (open / Short)

    4-3-14. Low pressure sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Low Pressure sensor Open/Short error determination method 1) Identifies from when power is supplied or 2 minutes after RESET, and only when set is stopped. 2) An Open/Short error will occur if the input voltage standard range of 0.5V ~ 4.95V is exceeded.
  • Page 59: Suction Temperature Sensor Error (open / Short)

    4-3-15. Suction temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method SUCT Did the connector for the Outdoor Suction sensor break away from the PCB? Restart operation after connecting the connector to PCB...
  • Page 60: Liquid Pipe Temperature Sensor Error (open / Short)

    4-3-16. Liquid pipe temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method LIQUID Did the connector for the Liquid Pipe Temperature sensor break away from the PCB? Restart operation after connecting...
  • Page 61: Evi In Temperature Sensor Error (open / Short)

    4-3-17. EVI IN temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method EVI-IN Did the connector for the EVI In Temperature sensor break away from the PCB? Restart operation after connecting...
  • Page 62: Evi Out Temperature Sensor Error (open / Short)

    4-3-18. EVI OUT temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method EVI-OUT Did the connector for the EVI Out Temperature sensor break away from the PCB? Restart operation after connecting...
  • Page 63: Suction-2 Temperature Sensor Error (open / Short)

    4-3-19. Suction-2 temperature sensor error (Open / Short) Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Disconnection or breakdown of relevant sensor. 1. Inspection Method SUCT2 Did the connector for the Suction-2 sensor break away from the PCB? Restart operation after connecting the connector to PCB...
  • Page 64: Measures Of Other Outdoor Unit Error

    4-3-20. Measures of other outdoor unit error FAN2 wire unconnected FAN2 PBA IPM temperature error sensor error FAN1 wire unconnected FAN1 PBA IPM temperature error sensor error Inverter / Hydro control part display COMP.2 wire unconnected Inverter PBA2 IGBT tempera- error ture sensor error COMP.1 wire unconnected...
  • Page 65: E407 : Comp Down Due To High Pressure Protection Control

    4-3-21. : COMP DOWN due to high pressure protection control Inverter / Hydro control part display Judgment Method Value of the high pressure sensor is detected at 40kgf/cm² or more <Coolingoperation> Outdoor unit fan motor problem (constrained, defective) Motor driver defective or wire is cut Outdoor heat exchanger is contaminated.
  • Page 66: E410 : Comp Down Due To Low Pressure Protection Control

    4-3-22. : COMP DOWN due to low pressure protection control Inverter / Hydro control part display Judgment Method Inspection when the value of low pressure sensor is 1.8kgf/cm², or less for air conditioning and 0.8kgf/cm² for heating. ∙ Refrigerant shortage ∙...
  • Page 67: E416: Suspension Of Starting Due To Compressor Discharge Temperature Sensor / Top Temperature Sensor

    4-3-23. : Suspension of starting due to compressor discharge temperature sensor / TOP temperature sensor Inverter / Hydro control part display Judgment Method When value of compressor discharge temperature sensor / TOP temperature sensor is checked at 120 or more ∙...
  • Page 68: 3-phase Input Wiring Error

    4-3-24. 3-phase Input Wiring error Inverter / Hydro control part display When turn on the power and check the status of the power from the inverter. If the phase does not connect the power(no phase) : E425 or E466 (E366) is displayed (Air conditioner to maintain the Judgment Method normal state.) However) N-phase must be properly connected.
  • Page 69: E428: : Suspension Of Starting By Abnormal Compression Ratio

    4-3-25. : Suspension of starting by abnormal compression ratio Inverter / Hydro control part display ∙ Compression ratio [(High pressure+1.03)/(Low pressure+1.03)] less than 1.5 and lasts for 10 minutes or more Judgment Method ∙ Differential pressure (high pressure - low pressure) less than 0.4 MPa.g and lasts for 10 minutes or more ∙...
  • Page 70: Evi Eev Opening Error

    4-3-26. EVI EEV opening error Inverter / Hydro control part display Judgment Method ∙ DSH <10°C, EVI Out-in <= 0°C & frequency> 65Hz 40 minutes maintaining Cause of problem . EVI EEV and intercooler leakage, excessive refrigerant amount, outdoor check valve inserted opposite. 1.
  • Page 71: Refrigerant Leakage Error

    4-3-27 Refrigerant leakage error Outdoor unit (Refrigerant leakage judgment before starting) display (When start, refrigerant leakage judgment) Judgment ∙ Before starting : Before compressor starting after system halt 2 minutes (High & low pressure sensor Open / Short error occurs and 1kg/cm2 or less) ∙...
  • Page 72: Prevention Of Heating Operation Due To Outdoor Temperature

    4-3-28. Prevention of heating operation due to outdoor temperature Inverter / Hydro control part display (Prevention of cooling operation due to low temperature of outdoor) Judgment Method ∙ Cooling operation : When the outdoor temperature is less than -25°C Cause of problem ∙...
  • Page 73: Fan Starting Error

    4-3-29 Fan starting error (FAN PCB(FAN1)) Outdoor unit display (FAN PCB(FAN2)) ∙ Startup, and then if the speed increase is not normally. Judgment Method ∙ Detected by H/W or S/W ∙ Compressor connection error Cause of problem ∙ Defective Compressor ∙...
  • Page 74 IPM breakdown diagnostics (FAN PCB) 1. Preparations before checking 1) Power Off 2) IPM failure, discharge mode may not work properly. Therefore, wait more than 15 minutes after the Power Off. 3) Remove all of the Fan PCB connectors. (Comp connector included) 4) Prepare the digital multi tester.
  • Page 75: Fan Lock Error

    4-3-30. Fan lock error Inverter / Hydro control (FAN PCB(FAN1)) part display (FAN PCB(FAN2)) Judgment Method ∙ Is checked symptoms by phase current of Fan Motor. ∙ Fan Motor connection error. ∙ Defective Fan Cause of problem ∙ Defective PCB 1.
  • Page 76: Momentary Blackout Error

    4-3-31. Momentary blackout error Inverter / Hydro control part display (Prevention of heating operation due to high temperature of outdoor) Judgment Method ∙ Momentary stop of compressor due to momentary blackout. Cause of problem ∙ Momentary stop of compressor due to momentary blackout. 1.
  • Page 77: Outdoor Fan Motor Overheating

    4-3-32. Outdoor Fan Motor overheating (FAN PCB(FAN1)) Inverter / Hydro control part display (FAN PCB(FAN2)) Judgment Method ∙ Overheating due to the internal sensor of the Fan Motor. ∙ Defective connection wire ∙ Defective Fan Motor Cause of problem ∙ Defective PCB ∙...
  • Page 78: Fan Ipm Overheat Error

    4-3-33. Fan IPM Overheat error (FAN1 PCB) Inverter / Hydro control part display (FAN2 PCB) Judgment Method ∙ IPM internal temperature more than 85°C (E455, E355) ∙ Heat sink and IPM assembly defective. Cause of problem ∙ Defective heat sink cooling 1.
  • Page 79: Compressor Starting Error

    4-3-34. Compressor starting error (INVERTER1 PCB) Inverter / Hydro control part display (INVERTER2 PCB) ∙ Startup, and then if the speed increase is not normally. Judgment Method ∙ Detected by H/W or S/W. ∙ Compressor connection error Cause of problem ∙...
  • Page 80 Starting error (cont.) ■ Compressor applied 2 Continue Power Off and then Restart. Did the error occurs? End of Service Power Off Inverter1 - Compressor2 Inverter2 - Compressor1 to the wiring change Restart Before change / After change Error, depending on the situation replace the Compressor or PCB Before change After change...
  • Page 81: Inverter Overcurrent Error

    4-3-35. Inverter Overcurrent error (INVERTER1 PCB) Inverter / Hydro control part display (INVERTER2 PCB) ∙ Will occur if the overcurrent flowing in the IPM. Judgment Method ∙ Detected by H/W or S/W ∙ Installation defective ∙ Connection wire error Cause of problem ∙...
  • Page 82 Compressor applied 2 Continue Power Off Inverter1 - Compressor2 Inverter2 - Compressor1 to the wiring change Restart Before change / After change Error, depending on the situation replace the Compressor or PCB Before change After change Measure Error of No.1 Compressor Error of No.1 Compressor Replace No.1 Compressor Error of No.1 Compressor...
  • Page 83 IPM [IGBT] breakdown diagnostics (Inverter PCB) 1. Preparations before checking 1) Power Off. 2) IPM failure, discharge mode may not work properly. Therefore, wait more than 15 minutes after the Power Off. 3) Remove all of the Inverter PCB connectors and wire that is fixed as screw. (Include wire that is fixed to compressor and DC Reactor.) 4) Prepare the digital multi tester.
  • Page 84: Overvoltage / Low Voltage Error

    4-3-36. Overvoltage / Low voltage error (INVERTER1 PCB) Inverter / Hydro control part display (INVERTER2 PCB) ∙ N-phase wiring error and EMI Fuse short. Judgment Method ∙ DC-Link Overvoltage / Low voltage occurs. ∙ Check the input wiring Cause of problem ∙...
  • Page 85: Dc Link Voltage Sensor Error

    4-3-37. DC Link voltage sensor error (INVERTER1 PCB) (INVERTER2 PCB) Outdoor unit display (OUTDOOR FAN 1 PCB) Judgment Method ∙ DC voltage detection : Error judgment where the voltage value is more than 4.8V or less than 0.2V. ∙ DC Link Connector disconnected Cause of problem ∙...
  • Page 86: Fan Motor Overcurrent Error

    4-3-38. Fan Motor Overcurrent error (FAN PCB(FAN1)) Outdoor unit display (FAN PCB(FAN2)) ∙ Occurs when overcurrent flows in the IPM. Judgment Method ∙ Detected by H/W or S/W ∙ Defective FAN PCB Cause of problem ∙ Connector error ∙ Defective Motor 1.
  • Page 87 Fan Motor Overcurrent error (cont.) (FAN PCB(FAN1)) Outdoor unit display (FAN PCB(FAN2)) ∙ Occurs when overcurrent flows in the IPM. Judgment Method ∙ Detected by H/W or S/W Cause of problem ∙ Defective FAN Motor 1. Inspection Method Power Off E489 E389 Replace No1 Fan motor...
  • Page 88: Input / Output Current Sensor Error

    4-3-39. Input / Output Current sensor error INVERTER1 PCB(Input Current sensor) INVERTER2 PCB(Input Current sensor) INVERTER1 PCB(Output Current sensor) Outdoor unit display INVERTER 2 PCB(Output Current sensor) OUTDOOR FAN PCB (FAN1 Output Current sensor) OUTDOOR FAN PCB (FAN2 Output Current sensor) Judgment Method ∙...
  • Page 89: Outdoor Fan Pcb Overvoltage / Low Voltage Error

    4-3-40. Outdoor Fan PCB Overvoltage / Low voltage error Inverter / Hydro control part display ∙ N-phase wiring error and EMI Fuse short. Judgment Method ∙ DC-Link Overvoltage / Low voltage occurs. ∙ Check the input wiring Cause of problem ∙...
  • Page 90: Hall Ic (fan) Error

    4-3-41. Hall IC (Fan) error (FAN PCB(FAN1)) Inverter / Hydro control part display (FAN PCB(FAN2)) ∙ Fan rotation defective or vibration and noise of the defective operation. Judgment Method ∙ Hall IC there is no signal input. ∙ Connection status error. ∙...
  • Page 91: Inverter Overheat Error

    4-3-42. Inverter overheat error Both end resistance values of IGBT module pin(8, 9 pin) Inverter / Hydro control part (INVERTER1 PCB) Temperature [°C] NTC [ohm] AD [V] Temperature [°C] NTC [ohm] AD [V] display (INVERTER2 PCB) 9000 2.58 0.55 6000 2.33 0.51 ∙...
  • Page 92: Option Setting Error Of Outdoor Unit

    4-3-43. Option setting error of outdoor unit Inverter / Hydro control part display Judgment Method Refer to the inspection method below. ∙ Option setting error of outdoor unit. Cause of problem (E2P option use of other model or set of the relevant outdoor unit, compressor breakdown) 1.
  • Page 93: Hydro Inlet Temperature Sensor (tw1) Short/open

    4-3-44. Hydro inlet temperature sensor (Tw1) Short/Open Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Hydro Unit Water In Temperature Sensor Open/Short error 1. Inspection Method Did the connector for Water In Temperature Sensor breakaway from the PCB? Restart operation after connecting the connector to PCB.
  • Page 94: Hydro Outlet Temperature Sensor (tw2) Short/open

    4-3-45. Hydro outlet temperature sensor (Tw2) Short/Open Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Hydro Unit Water Out Temperature Sensor Open/Short error. 1. Inspection Method Did the connector for Water Out Temperature Sensor breakaway from the PCB? Restart operation after connecting the connector to PCB.
  • Page 95: Frozen Damage Error

    4-3-46. Frozen damage error Inverter / Hydro control part display Water outlet temperature dose not change more than 3 . Judgment Method EVA In/Out maintains the temperature below zero. Cause of problem Indoor temperature of Hydro heat exchanger is low.(flow/temperature is low) 1.
  • Page 96: Error When Freeze Prevention Comp Off

    4-3-47. Error when freeze prevention Comp Off (Possibility of restarting in once ~ 3 times) Inverter / Hydro control part display (Stopping on 4 times) Water outlet temperature dose not change more than 3 Judgment Method EVA In/Out maintains the temperature below zero. During the cooling operation, can be detected Cause of problem Indoor temperature of Hydro heat exchanger is low.(flow/temperature is low)
  • Page 97: Hydro Outlet Temperature Sensor Breakaway

    4-3-48. Hydro outlet temperature sensor Breakaway Inverter / Hydro control part display Judgment Method Water Outlet temperature before and after the operation : Temperature difference is less than 2 Cause of problem Breakaway of Hydro outlet temperature sensor 1. Inspection Method Check the mounting status of Hydro Out temperature sensor.
  • Page 98: Water Flow Error(water Pressure Sensor Or Flow Switch)

    4-3-49. Water flow error (Water pressure sensor) (Auto-restarting in once ~ 5 times) Inverter / Hydro control part display (Stopping on 6 times) Judgment Method Output status from Pump signal : Does not detect the signal of Flow sensor, more than 5 seconds. Cause of problem Does not detect the signal of Flow sensor.
  • Page 99: Error On Pump Magnetic Switch Malfunction

    4-3-50. Error on pump magnetic switch malfunction Inverter / Hydro control part display Judgment Method Refer to the inspection method below. Cause of problem Pump Magnetic Switch Malfunction Pump interlock input contact connection status. During pump operation the On signal to the contact does not enter in a row during the "pump interlock delay time"...
  • Page 100: Pcb Diagram And Parts List

    5. PCB Diagram and Parts List 5-1. ASSY PCB MAIN-HYDRO - Model : All models name is commonness...
  • Page 101 ASSY PCB MAIN-HYDRO (cont.) - Model : All models name is commonness ① ② ③ ④ CN101-EARTH CNP102-AC POWER CN712-INTERNAL PUMP CN701-OUTPUT #1 : LIVE #1 : NEUTRAL #1 : COOLING_HEATING_DP SIGNAL #1 : EARTH #2 : #2 : #2 : #3 : COOLING_HEATING_DP SIGNAL #3 : NEUTRAL #3 : LIVE SIGNAL...
  • Page 102 ASSY PCB MAIN-HYDRO (cont.) - Model : All models name is commonness 9 10 11...
  • Page 103 ASSY PCB MAIN-HYDRO (cont.) - Model : All models name is commonness ① ② ③ ④ CN403-PRESSURE SENSOR CN806-FLOW SWITCH CN05-INPUT CN408-INPUT #1 : #1 : FLOW SWITCH SIGNAL #1: N/A #1 : PUMP_PROTECTION TEMP #2 : PHE_OUT SIGNAL #2 : GND #2 : N/A #2 : GND #3: N/A...
  • Page 104 5-2. ASSY PCB MAIN - Model : All models name is commonness 13 14 15 16...
  • Page 105: Assy Pcb Main

    ASSY PCB MAIN (cont.) - Model : All models name is commonness ① ② ③ ④ CN43-INV COMM CN22-DOWNLOAD CN301-EEPROM CN42-FROM HUB PCB #1 : RXD_IN #1 : GND #1 : 12V #1 : 5V #2 : TXD_IN #2 : #2 : INVERTER1_INRUSH_OUT SIGNAL #2 : RXD_INVERTER SIGNAL #3 : nTRST...
  • Page 106: Assy Pcb Sub-fan

    5-3. ASSY PCB SUB-FAN - Model : All models name is commonness...
  • Page 107 ASSY PCB SUB-FAN (cont.) - Model : All models name is commonness ① ② ③ ④ CN202-DOWNLOAD1 CN201-DAC1 U1-FAN1 U V1-FAN1 V #1 : V #1 : 5V #1 : U #1 : RXD_DEBUG1 #2 : VIEWER1_DAC1 #2 : TXD_DEBUG1 #3 : VIEWER2_DAC1 #3 : BOOT1 #4 : VIEWER3_DAC1...
  • Page 108: Assy Pcb Sub-emi (pf#8 H Power Model Only)

    5-4. ASSY PCB SUB-EMI (PF#8 H power model only) - Model : AG042/056KSV Series ① CN23- INVERTER 220V ② CN21-FAN A ③ CN22-MAIN 220 ④ RST- RST INPUT #1 : AC #1 : R #1 : AC T-IN #2 : #2 : S #2 : AC S-IN...
  • Page 109 5-5. ASSY PCB SUB-EMI (PF #9 H power model only) (cont.) - Model : AG070KSV Series...
  • Page 110: Assy Pcb Sub-emi (pf #9 H Power Model Only)

    ASSY PCB SUB-EMI (PF #9 H power model only) (cont.) - Model : AG070KSV Series ① CN23-INVERTER 220V ② CNCN108-HUB 220V ③ CN42-EARTH ④ CN105-R OUT #1 : AC LIVE #1 : AC LIVE #1 : EARTH (PE) #1 : R-OUT #2 : #2 : #3 : AC NEUTRAL...
  • Page 111: Assy Pcb Main-hub

    5-6. ASSY PCB MAIN-HUB - Model : All models name is commonness □ DC...
  • Page 112 ASSY PCB MAIN-HUB (cont.) - Model : All models name is commonness □ DC ① CN83-EVI EEV ② CN81-EEV1 ③ CN82-EEV2 ④ CN43-TEMP. SENSOR #1 : EEV3_A_OUT #1 : EEV1_B'_OUT #1 : EEV2_B'_OUT #1 : COMP1 DISACHRGE #2 : COMP1 DISCHARGE #2 : EEV3_B_OUT #2 : EEV1_A'_OUT #2 : EEV2_A'_OUT...
  • Page 113 ASSY PCB MAIN-HUB (cont.) - Model : All models name is commonness □ AC...
  • Page 114 ASSY PCB MAIN-HUB (cont.) - Model : All models name is commonness □ AC (cont.) CN714-CCH1 CN715-MAIN-COOLING CN713-CCH2 CN704-HOTGAS-VALVE1 ① ② ③ ④ #1 : CCH1 #1: MAIN-COOLING #1 : CCH2 #1 : HOTGAS BYPASS1 #2 : CCH1 #2: MAIN-COOLING #2 : CCH2 #2 : HOTGAS BYPASS1 ⑤...
  • Page 115: Assy Pcb Inverter

    5-7. ASSY PCB INVERTER (PF #8) - Model : AG042/056KSV Series...
  • Page 116 ASSY PCB INVERTER (PF #8) (cont.) - Model : AG042/056KSV Series ① W- COMP W ② U-COMP U ③ V-COMP V ④ CN22-DOWNLOAD #1 : COMP W #1 : COMP U #1 : COMP V #1 : RX-DOWN #2 : TX-DOWN #3 : N-TRST #4 : TDO #5 : TCK...
  • Page 117 ASSY PCB INVERTER (PF #9) (cont.) - Model : AG070KSV Series...
  • Page 118 ASSY PCB INVERTER (PF #9) (cont.) - Model : AG070KSV Series ① W-COMP W ② U-COMP U ③ V-COMP V ④ CN22-DOWNLOAD #1 : COMP W #1 : COMP U #1 : COMP V #1: RX-DOWN #2: TX-DOWN #3: BOOT #4: TDO #5: TCK #6: TDI...
  • Page 119: Assy Pcb Sub-comm

    5-8. ASSY PCB SUB-COMM - Model : All models name is commonness ① CN44 ② CN36 ③ CN#44 ④ CN45 ⑤ CN55 #1 :F1 #1 : F1 #1 : OF1 #1 : R1 #2 :F2 #2 : F2 #2 : OF2 #2 : R2 #3 :OF1 #4 :OF2...
  • Page 120: Wiring Diagram

    6. Wiring Diagram 6-1. DVM CHILLER hydro part wiring diagram - Model : AG042/056/070KSVANH/EU This Document can not be used without Samsung’ s authorization.
  • Page 121: Dvm Chiller Hydro Part Wiring Diagram(ag042/056/070ksvgnh/eu)

    DVM CHILLER hydro part wiring diagram (cont.) - Model : AG042/056/070KSVGNH/EU This Document can not be used without Samsung’ s authorization.
  • Page 122: Dvm Chiller Inverter Control Part Wiring Diagram(ag042/056ksvanh/eu)

    6-2. DVM CHILLER inverter control part wiring diagram - Model : AG042/056KSVANH/EU This Document can not be used without Samsung’ s authorization.
  • Page 123: Dvm Chiller Inverter Control Part Wiring Diagram(ag070ksvanh/eu)

    6-3. DVM CHILLER inverter control part wiring diagram - Model : AG070KSVANH/EU This Document can not be used without Samsung’ s authorization.
  • Page 124: Dvm Chiller Inverter Control Part Wiring Diagram(ag042/056ksvgnh/eu)

    6-4. DVM CHILLER inverter control part wiring diagram - Model : AG042/056KSVGNH/EU This Document can not be used without Samsung’ s authorization.
  • Page 125: Dvm Chiller Inverter Control Part Wiring Diagram(ag070ksvgnh/eu)

    6-5. DVM CHILLER inverter control part wiring diagram - Model : AG070KSVGNH/EU This Document can not be used without Samsung’ s authorization.
  • Page 126: Cycle Diagram

    7. Cycle Diagram - AG042/056/070KSV Series PUMP Abbreviation Name Abbreviation Name Inverter Compressor V_AR Accumulator Oil Return Valve Outdoor Fan Motor CV_D Discharge Check Valve Outdoor Heat Exchanger Discharge Temperature Sensor Accumulator T_TS Total Suction Temperature Sensor Oil Separator T_S1 Suction1 Temperature Sensor Intercooler T_S2...
  • Page 127 ∙ Cycle diagram function explanation Accumulator : Separating the incoming liquid refrigerant to the compressor in order to prevent liquid refrigerant. Oil Separator : Separating the oil from the refrigerant discharged from the compressor, and the separated oil is returned to the compressor. Intercooler : Supercooled liquid refrigerant through the heat exchanger and makes the medium pressure gas refrigerant injected into the compressor.
  • Page 128: Key Options

    8. Key Options 8-1. Setting hydro controller option Basic segment display SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Remarks Water In Ex) -5 °C View mode display Press and hold K3 and K4 for 3 seconds to enter the view mode. Press K3 to change view mode in order of the table.
  • Page 129 Number of KEY operation SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Remarks press 13 times Suction1 temperature ex) -11.2 °C 14 times Suction2 temperature ex) -11.2 °C 15 times Cond out temperature ex) -11.2 °C 16 times Liquid temperature ex) 35 °C 17 times EVA In1 temperature ex) 35 °C...
  • Page 130: How To Set Hydro Controller Option

    8-2. How to set hydro controller option Option value Option No. SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Operation On/Off input method Temperature setting input method 1. Turn on the product. 2. Press and hold the K2 to enter the option setting. - In option setting, other key input (forced fan, temperature setting, etc.) is not received.
  • Page 131 Module control Option Factory Option item Option Definition Setting unit setting option value default Note1) Default (100 %) Level1 Quiet function level 0 ~ 3 Main unit of module Level2 Level3 Delay for inspecting no input for pump Confirm delay for unsecured flow 10 ~ 240 interlock and unsecured flow rate (by Main unit of module...
  • Page 132 Function description Description Select operation On/Off input method of module/group Select temperature setting input method of module/group Select operation mode (Cool/Heat, Hot water/Cool storage) input method of module/group Select demand control input method of module/group Select demand level • Current will be limited below the set level when "Perform" command is transmitted. quiet function input method of module Select forced fan function input method of module •...
  • Page 133 Water law This function allows water outlet temperature to change regarding damand load changes depending on outdoor temperature and room temperature. It can be set to increase energy efficiency and comfort. - Outdoor temparture standard - Room temperature standard If it is room temperature If it is room temperature model, water outlet set model, water outlet set...
  • Page 134 MICOM version display Press and hold K3 and K5 for 3 seconds to enter the view mode. Press K3 to change view mode in order of the table. Cancelling view mode display - Press and hold K3 for 3 seconds. SEG1 SEG2 SEG3...
  • Page 135: Setting Inverter Controller Option

    8-3. Setting inverter controller option Basic segment display Display Step Display content SEG1 SEG2 SEG3 SEG4 At initial power input Checking segment display SEG1 SEG2 SEG3, 4 SEG3, 4 Chiller units Communicating Setting (Addressing) After communication setting Transmit / Reception address Hydro control : A Hydro control : 0 (Usual occasion)
  • Page 136 Installing and setting the option with tact switch and functions 1. Press and hold K2 for 3 seconds. (Only available when the operation is stopped) - The display will show the following. - If you have set the Emergency operation for compressor malfunction, 1 or 2 will be displayed on Seg 4. - Seg 1 and Seg 2 will display the number for selected option.
  • Page 137 Option item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks Enabled (Factory default) During snow accumulation , the Forced fan function Main fan may spin even when the unit Note1) Disabled is not in operation Unused option Main Unused option Unused option...
  • Page 138 How to set a special operation using tact switch and check the view mode K1 K2 K3 K4 K1 K2 K3 K4 K1 (Number of press) KEY operation Display on 7-Segment “ ” “ ” “ ” “ ” 1times Refrigerant charging in Heating mode 2times Trial operation in Heating mode...
  • Page 139 K3 (Number of KEY operation Display on 7-Segment press) 1 time Intialize (Reset) operation Same as initial state Display K4 (Number of Display contents press) SEG1 SEG2, 3, 4 AG042K ✴✴✴ 0, 1, 5 AG056K ✴✴✴ 1 time Capacity depending on horsepower 0, 2, 0 AG070K ✴✴✴...
  • Page 140: Trial Operation

    9. Trial Operation 9-1. Trial operation for each CHILLER unit HYDRO-UNIT_MODULE_CHILLER 88-SEG DISPLAY DIP S/W TACT S/W NOTE Before a test run, check whether the power wire is disconnected or misconnected. If the power wire is disconnected or misconnected, error code displays or power is not supplied or major part is not operated. The pump built-in model is able not to operate or to be occurred trip of OCR or to reverse rotation of pump, especially if the power wire is disconnected or misconnected.
  • Page 141 6. Operation mode in main control is selected be cooling/heating switch. No.2 DIP S/W Cool mode Heat mode - Operation mode can be changed only when operation is off. 7. Change the set temperature if necessary in main control. Cooling Heating Default value 7 °C...
  • Page 142 China china.samsungportal.com © Samsung Electronics Co., Ltd. May. 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-00148E_2...

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