Danfoss Optyma iCO2 User Manual
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Danfoss Optyma iCO2 User Manual

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User Guide
Optyma™ iCO2
OP-UPAC015COP04E
danfoss.com

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Summary of Contents for Danfoss Optyma iCO2

  • Page 1 User Guide Optyma™ iCO2 OP-UPAC015COP04E danfoss.com...

  • Page 2: Table Of Contents

    Contents 1. Condensing unit control ........................3 1.1 Control ....................................3 1.2. Time chart ..................................13 2. Module controller ...........................14 2.1 System Overview ................................14 2.2 Electric Installation ................................ 15 2.3 Mechanical Installation ..............................17 2.4 Technical data ................................. 19 2.5 Spare parts..................................19 2.6 Dimensions ..................................

  • Page 3: Condensing Unit Control

    E2PROM, and the operation is controlled with this content henceforth. 10. Contents which have been changed and saved are used for control even if the power supply is turned off and backed on again. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 3...
  • Page 4 * If the special display is released in this period, [CXX] or [PXX] continues. * If the special display is released in this period, [CXX] or [PXX] continues. 4 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 5 10's place: CNS2 External input 1: Short) 1's place: CNS3 (*2) 100's place: 52X1 0, 1 Relay output (0: Open 10's place: 52X2 (Spare) 1: Short) 1's place: (Spare) © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 5...
  • Page 6 Cause of compressor error detection 3 0~127 operation. This is retained in EEPROM memory till the cause of compressor stop by first error occurs after turning power on. 6 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 7 (rps) 20: (Default) EEVSC target superheat degree change value 1 – 40 (0.5 – 20 deg) 0: (Default) EEV-LB target discharge pipe temp. change -20 – 20 deg © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 7...
  • Page 8 Medium pressure sensor broken wire (PSM) Continuous Once Medium pressure sensor output error Continuous Once External input error stop Continuous Once E88-1 Oil level error (CM1) Continuous Once CPU-CPU communication error 8 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 9 When Module controller code “r28” is set to 0, PsD is the value +1.0bar from value set with rotary SW of the condensing unit and PsU is the value -1.0bar from value set with rotary SW of the condensing unit. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 9...
  • Page 10 OFF (full closure) ② ・Middle pressure receiver inlet electronic expansion valve OFF (full open) Compressor error stop ・Gas cooler fan OFF after delay 3 min. delay time elapsed? To ① 10 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 11 2. When the discharge gas temperature (Td) rises to 150°C even if this control is turned on, the Condensing unit is stopped with the retry stop. If the retry stop repeats 5 times, however, the unit is stopped with the error stop. (Alarm code “E36” is displayed.) © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 11...
  • Page 12 2 hours at first power on or 3 hours at second or later oil return, and total oil loss exceeds the specified value, the following control is performed. It operates with the compressor frequency fixed at the frequency as shown in the table above. 12 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 13: Time Chart

    Controlled at, or above, the EEV-LB1 specified value of discharge temperature. EEV for liquid bypass Initial speed 40 rps Compressor speed Ordinary control 0 rps 3 min. 0 rps 105 sec © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 13...

  • Page 14: Module Controller

    The controller is delivered with three interfaces for Modbus communication, each with their own function: 1. Communication with System Manager This interface lets a Danfoss System Manager find both the connected condensing unit and all the connected evaporator controllers. 2. Communication with condensing unit 3.

  • Page 15: Electric Installation

    Power supply to CDU Short-circuit proof cable Twisted pair, shielded cable NSGAFÖU 1,8/3kV UNITRONIC® BUS LD 2 x 1,5mm² 1 x 2 x 0.22 1,2m (in PVC sleeve) 1,8m © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 15...
  • Page 16 Cables for data communication must be kept separate from other electric cables: - Use separate cable trays - Keep a distance between cables of at least 10 cm. 16 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 17: Mechanical Installation

    • Route and connect the provided Modbus and power supply cables to the CDU control panel • Route and connect the evaporator controller Modbus cable to the Module controller • Option: Route and connect the System Manager Modbus cable to the Module controller © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 17...
  • Page 18 Note: The cables should be fixed with the cable ties and should not touch the baseplate to avoid water ingress. 18 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 19: Technical Data

    Parts Name Parts No Unit Dimension (mm) Packing Style Remarks weight Length Width Height CO2 MODULE CONTROLLER UNIVERSAL GATEWAY MODULE CONTROLLER 118U5498 Carton box 2.6 Dimensions Units in mm © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 19...

  • Page 20: Operation

    7. For connection to a Danfoss System Manager - Connect the modbus communication - Set the address with parameter o03 - Perform a scan in the System Manager. 20 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 21: Survey Of Functions

    Node 2 Address Io02 See parameter Io01 Node 3 Address Io03 See parameter Io01 Node 4 Address Io04 See parameter Io01 Node 5 Address Io05 See parameter Io01 © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 21...
  • Page 22 Push briefly (1s) the upper button. A status code will be shown on the display. The individual status Ctrl. state: codes have the following meanings: CDU not operational CDU operational Other displays Oil recovery No communication with CDU 22 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 23: Fault Message

    A15 / Evap. controller 15 offline Communication lost with evap. controller 15 See A01 A16 / Evap. controller 16 offline Communication lost with evap. controller 16 See A01 © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 23...

  • Page 24: Menu Survey

    °C Read discharge pressure in temperature °C Read suction pressure Read suction pressure in temperature °C Read discharge temperature °C Read suction temperature °C Read controller software version 24 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 25: System Diagram

    User Guide | Optyma™ iCO2 3. System diagram © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 25...

  • Page 26: Wiring Diagram

    7-segment LED (data display) SW5-1~3 For target middle pressure adjustment 63H1-1 High pressure switch LED10 Sub, normal (green) SW5-4,5 Spare LED 11 Sub, inspection (red) SW5-6~8 Pressure check operation mode 26 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 27: Servicing

    6. Turn on the source power supply 6 hours or more before starting the compressor to energize the crankcase without turning on the operation switch (CNS2). 7 segment display Operation switch(CNS2) Bracket Carton Carton © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 27...
  • Page 28 EEVG EEVSC EEVLB temperature temperature Rotating rate (bar g) (˚C) (pulse) (pulse) (pulse) (˚C) (˚C) (rps) Refrigeration low 84.9/48.7/26.3 87.9 outside temperature Freezing low outside -5.4 86.8/41.3/8.0 temperature 28 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 29 When setting the evaporation pressure to 26 bar (the evaporation temperature is -10 °C), open the CDU panel to access the control PWB and set “SW1” = “1” and “SW2” = “0”. An image is shown below. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 29...
  • Page 30 Pressure equivalent to “Evaporation temperature (setting value) -5°C” 25.47 bar ON OFF Pressure equivalent to “Evaporation temperature (setting value) -10°C” 21.89 bar Down Pressure equivalent to “Evaporation temperature (setting value) -15°C” 18.68 bar 30 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 31 7. Referring to instruction maual page 29, Alarm history display mode, clear the history of alarm code “E-37” which has been displayed and saved. 8. By the low pressure cut or turning “OFF” the breaker, end the operation confirmation (stop of condensing unit). © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 31...

  • Page 32: Installation And Commissioning Check Sheet

    Is the height difference between indoor Indoor unit is lower than CDU ;≤22m 2.06 unit and Condensing unit (CDU) within Be sure to follow the Instruction manual specification? "3 Installation precautions/Typical instillation". 32 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 33 Write the minimum flow rate (m/s) "4- 4.08 Evaporator within the oil return Installation / Selection of installation specification?" place" Provide photos of system configuration 4.09 and set up of the refrigeration system? © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 33...
  • Page 34 Is this diameter in the vertical riser part Installation of the trap follows the 6.05 of the Gas pipe limited to use Ø19.05 " 3 Installation precautions/Typical (t1.4)? instillation" 34 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 35 8.07 <5°C actual outdoor air temperature and 7 segment display C02: Outdoor air temperature (Tho-A) Are there any anomalous sound and/or 8.08 Audible and visual check Yes/No vibration? © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 35...

  • Page 36: Request For Maintenance And Inspection

    Whether or not there is refrigerant leakage 5 years Strainer Strainer out-/inlet temperature 8 years Capillary tube Contact wear, vibration 8 years Piping Contact wear, vibration 8 years 36 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 37 5: (Default) 0 – 20 2: Silent mode input CNG2 9: (Default) 0 – 20 4: Forced oil return input 5: Gas cooler fan snow control input 9: Multistage demand input © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 37...

  • Page 38: Warranty Conditions Of Condensing Unit

    • Accident caused by overcharge or shortage of refrigerant or Condensing unit oil (start failure, poor cooling of motor, improper lubrication). • Accident owing to insufficient defrost operation. 38 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 39: Operation Data Check Sheet

    1. When the compressor is stopped and there is no pressure difference between medium pressure and low pressure 2. Compressor is runnning Check the data during compressor runnning © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 39...
  • Page 40 Cooler5:superheat PV *3 (u21) >5 Cooler5:expansion valve opening duty *3 (u23) 0~100 Cooler5:information Cooler5:Liquid feeding solenoid valve ON(1)/OFF(0) Cooler5:defrost status *3 (u60) ON(1)/OFF(0) Cooler5:fan Operating *3 (u59) ON(1)/OFF(0) 40 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 41 Cooler8:superheat PV *3 (u21) >5 Cooler8:expansion valve opening duty *3 (u23) 0~100 Cooler8:information Cooler8:Liquid feeding solenoid valve ON(1)/OFF(0) Coole8:defrost status *3 (u60) ON(1)/OFF(0) Cooler8:fan Operating *3 (u59) ON(1)/OFF(0) © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 41...

  • Page 42: Regular Inspection Check Sheet

    Is the discharge gas temperature correct? (7 segment display C08: Discharge pipe temperature (CM1), [Judgment guide] Td 125°C or under Is the waste heat short-circuited? (7 segment display C02: Outdoor air temperature (Tho-A)) 42 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 43: Error Code List

    Check the inverter output Replace inverter or compressor Detect the anomalous output E42-1 Current cut Compressor wiring, connector Replace wiring or power current of inverter disconnection or short-circuit transistor © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 43...
  • Page 44 The error will be reset. Make sure, however, to check the error code and remove the cause of error before resetting. * Error cannot be reset for 3 minutes after it occurred. 44 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 45: External Signal Output

    • Use an adequate screwdriver to tighten terminal screws. If it is tightened too much, it could destroy screws. For the tightening torque of screw, see the table below. Tightening torque (N·m) M3.5 Power cable/signal cable terminal board 0.68 ~ 0.82 © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 45...
  • Page 46 *1 Demand input: P04 PF22: OFF → 000 → 040 → 060 → 080, P14, P15 *2 Demand rate setting for multistage demand input: 0%, 40%, 60%, 80% 46 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 47 Spare (Spare setting to be same as default setting.) Fan ON output Spare (Spare setting to be same as default setting.) Oil return operation output Spare (Spare setting to be same as default setting.) © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 47...

  • Page 48: Troubleshooting

    L3 and L1 phases or L3 and L2 Check operation without phases becomes 0V. any rectifications. 4. Presumable cause • Power source voltage failure on primary side • Control PCB anomaly Note: 48 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 49 • Leakage of refrigerant • Lack of air ow volume Check refrigerant amount • Injection circuit malfunction again. • Excessive suction superheat due to malfunction of EEV operation. Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 49...
  • Page 50 (Check the molded section as well.) • Disconnection of sensor harness connection 110 130 150 (connector) Temperature(°C) Temperature(°C) • Control PCB anomaly Note: 50 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 51 • Broken sensor harness or the internal wire of sensing section (Check the molded section as well.) • Disconnection of sensor harness connection (connector) Temperature(°C) • Control PCB anomaly Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 51...
  • Page 52 • Broken sensor harness or the internal wire of sensing section (Check the molded section as well.) • Disconnection of sensor harness connection 130 150 (connector) Temperature(°C) • Control PCB anomaly Note: 52 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 53 • Closed service valves • High pressure sensor anomaly Note: If the same error does not reappear, continue to get data with Mente PC. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 53...
  • Page 54 Note: Inverter cooling fan is operated under the condition mentioned at right. If the same error does not reappear, continue to get data with Mente PC. 55°C 67°C Power transistor temperature sensor 54 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 55 *4 Measurement position: Check resistance between P-U, P-V, P-W, N-U, N-V, N-W, P-N. (Disconnect compressor wires before measurement.). If it fails to repeat, connect the Mente PC, and continue to collect data. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 55...
  • Page 56 Connect the connector securely. Rectify the disconnection of 63H1-1 wire. Go to next page Note: If the same error does not reappear, continue to get data with Mente PC. 56 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 57 [Setting of DIP switch on i nverter PCB] JSW10-1 JSW11-1 4. Presumable cause • Disconnection of signal wiring harness • Control PCB anomaly • Inverter PCB anomaly • Anonaly of inrush current suppression resistance Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 57...
  • Page 58 Notes: *1 Measurement item Connector of power source wiring for fan motors (RED - BLACK) *2 Refer to resistance on another table (Page 58) If the same error does not reappear, continue to get data with Mente PC. 58 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 59 *4 Speed command voltage 0 ～ 7.5[V] *5 Checking by Mente PC or 7-segment If the same error does not reappear, continue to get data with Mente PC. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 59...
  • Page 60 Note: Measurement value varies depending on measurement equipment used. This value is to inspect obvious anomaly e.g. short circuit etc. and then it’s not the one to guarantee to judge right and wrong. 60 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 61 Clogging of strainer or • Leak of refrigerant anomaly of the EEV body • EEV on the cooler side may cause. anomaly Check them. If it has a problem, replace Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 61...
  • Page 62 ・Broken sensor harness or the internal wire of sensing section (Check the molded section as well.) ・Disconnection of sensor harness connection (connector) Temperature (°C) ・Control PCB anomaly Note: 62 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 63 (connector) ・Sensor anomaly ・Control PCB anomaly ・Bad installation condition ・Insu cient refrigerant amount Pressure (bar) Pressure (bar) Pressure sensor output voltage : To measure beween Black-White Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 63...
  • Page 64 4. Presumable cause ・Broken sensor harness or the internal wire of sensing section(Check the molded section as well.) ・Disconnection of sensor harness connection (connector) ・Control PCB anomaly Temperature (°C) Note: 64 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 65 ・Broken sensor harness or the internal wire of sensing section (Check the molded section as well.) ・Disconnection of sensor harness connection Temperature (°C) (connector) ・Control PCB anomaly Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 65...
  • Page 66 *4 Measurement position: Check resistance between P-U, P-V, P-W, N-U, N-V, N-W, P-N. (Disconnect compressor wires before measurement.). If it fails to repeat, connect the Mente PC, and continue to collect data. 66 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 67 *4 Measurement position: Check resistance between P-U, P-V, P-W, N-U, N-V, N-W, P-N. (Disconnect compressor wires before measurement.). If it fails to repeat, connect the Mente PC, and continue to collect data. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 67...
  • Page 68 ・Disconnection of sensor harness connection (connector) ・Sensor anomaly ・Control PCB anomaly ・Bad installation condition Pressure (bar) ・Insu cient refrigerant amount Pressure sensor output voltage : To measure beween Black-White Note: 68 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 69 3.Condition of error displayed Same as above 4.Presumable cause ・Occurrence of emergency stop factor Note: The condensing unit detected the emergency stop signal sends the command to make [All stop]. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 69...
  • Page 70 Software program version Does E89 recur? before rewritten was unmatched. Control PCB anomaly → Replace control PCB. 4.Presumable cause ・Noise ・Mixing of software versions ・Control PCB anomaly Note: 70 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 71 If the vibration from the contact each other condensing unit is caused, at some parts? please connect the pipings with flexible pipe. Rectify the contact of piping. 4.Presumable cause Note: © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 71...
  • Page 72 fill up through the night. If it is unendurable for the customer, please elect sound insulation wall or change installation location of the condensing unit. Note: 72 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 73: Disassemble And Reassemble Method

    PCB. (CNTH7, CNZ on control PCB) b) Moving aside bracket for solenoid valve (SV) Remove the bracket for the SV from the compressor to keep the workspace. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 73...
  • Page 74 3) Remove temperature sensors (four places) and crankcase heater 1. Tho-S1(Suction pipe temperature sensor) 2. Tho-INJ1(Injection inlet temperature sensor) 3. Tho-C1(Under-dome temperature sensor) 4. Crankcase heater 5. Tho-D1(Discharge pipe temperature sensor) 74 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 75 5) Keep off harnesses from the brazing area Before starting brazing, remove EEV coil and sensors located backside to keep-off harnesses from the brazing area. Move aside Remove EEV to keep the harnesses away. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 75...
  • Page 76 For the compressor investigation, remain full pipes for the compressor side when cutting off. 2) Dismounting compressor Dismounting installation bolts (three positions in total) and pulling out with inclining upper side of compressor to front side. Position of bolts Front side 76 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 77 1) Mounting the new compressor Braze pipes after tightening fixing bolts (three positions in total). 1. Gas injection pipe 2. Oil return pipe 3. Suction pipe 4. Discharge pipe © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 77...
  • Page 78 4) Fitting discharge pipe and injection sensor etc., back to the original position Sensor should be put in from the lower side. 5) Mounting of wiring for compressor White Blue Front side 78 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 79: Inverter Pcb Replacement Procedure

    1. Inside of control box There are 3 screws at inner left side of control box. Be careful not to forget to loosen a center screw which is hidden by wiring. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 79...
  • Page 80 This mounting board supported at right edge as supporting point can be opened from left side. 2) Inverter PCB Following the process 1. to 3. enables easy access to the inverter PCB without disconnecting wires. 80 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

  • Page 81: Replacement Procedure Of Power Pcb

    (a) Replacement work of power PCB (on the second layer) The second layer 1. Loosen 4 screws There are 4 screws at all corners of the first layer. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 81...
  • Page 82 Cut the tie-up band Cut the tie-up band 4. Disconnect the wire going to control PCB Disconnect CNDR connector (Red) at the upper left part of control PCB Disconnect CNDR 82 | BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...
  • Page 83 7. Remove the first layer 7. Remove the first layer Following the process from 1. to 6. enables to remove the first layer and to access power PCB. © Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 83...
  • Page 84 BC408445719305en-000101 © Danfoss | Climate Solutions | 2023.01 | LCA012A030...

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