Daikin Emura 3 Series Service Manual
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Daikin Emura 3 Series Service Manual

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RXJ20A5V1B
RXJ25A5V1B
RXJ35A5V1B
RXJ42A2V1B
RXJ50A2V1B
draft – 22/04/2022 08:50
Service manual
Split Emura 3 R32
FTXJ20A2V1BW
FTXJ25A2V1BW
FTXJ35A2V1BW
FTXJ42A2V1BW
FTXJ50A2V1BW
FTXJ20A2V1BS
FTXJ25A2V1BS
FTXJ35A2V1BS
FTXJ42A2V1BS
FTXJ50A2V1BS
FTXJ20A2V1BB
FTXJ25A2V1BB
FTXJ35A2V1BB
FTXJ42A2V1BB
FTXJ50A2V1BB

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  • Page 1 Service manual Split Emura 3 R32 RXJ20A5V1B FTXJ20A2V1BW FTXJ20A2V1BS FTXJ20A2V1BB RXJ25A5V1B FTXJ25A2V1BW FTXJ25A2V1BS FTXJ25A2V1BB RXJ35A5V1B FTXJ35A2V1BW FTXJ35A2V1BS FTXJ35A2V1BB RXJ42A2V1B FTXJ42A2V1BW FTXJ42A2V1BS FTXJ42A2V1BB RXJ50A2V1B FTXJ50A2V1BW FTXJ50A2V1BS FTXJ50A2V1BB draft – 22/04/2022 08:50...
  • Page 2 The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein.

  • Page 3: Version Log

    Version log Version log Version code Description Date ESIE22-04 Document release April 2022 RXJ20~50A + FTXJ-A(W)(S)(B) Service manual Split Emura 3 R32 ESIE22-04 – 2022.04 draft – 22/04/2022 08:50...

  • Page 4: Safety Precautions

    Safety precautions 1 Safety precautions The precautions described in this document cover very important topics, follow them carefully. All activities described in the service manual must be performed by an authorized person. If you are NOT sure how to install, operate or service the unit, contact your dealer. In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods, …...
  • Page 5 Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Do NOT apply any permanent inductive or capacitance loads to the circuit without ensuring that this will NOT exceed the permissible voltage and current permitted for the equipment in use.
  • Page 6 WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). WARNING Make sure the work site environment is clean and safe to work in. Beware of spilled fluids, like water, oil or other substances.
  • Page 7 Safety precautions WARNING Make sure the total refrigerant charge is in accordance with the room size in which the unit is installed: please consult the detailed instructions on charging and allowed room sizes in the installation manual. WARNING ▪ NEVER mix different refrigerants or allow air to enter the refrigerant system. ▪...
  • Page 8 Safety precautions WARNING ▪ In order to prevent oxygen deficiency and R32 combustion, keep the room well- ventilated for a healthy work environment. Do NOT work in a confined space. If a refrigerant leak is detected in a confined room or an inadequately ventilated location, do NOT start the work until the area has been ventilated appropriately.
  • Page 9 Safety precautions WARNING ▪ The area MUST be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. ▪ Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e.
  • Page 10 Safety precautions WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. WARNING Prior to start working on systems containing flammable refrigerant, safety checks are necessary to ensure that the risk of ignition is minimised.
  • Page 11 Safety precautions 1.4 Cautions CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system. CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. CAUTION ▪ Do NOT place any objects or equipment on top of the unit. ▪...

  • Page 12: General Operation

    General operation 2 General operation The Split Emura 3 is typically used for cooling or heating in residential applications. The medium which is used to transfer the heat from inside to outside or vice versa, is refrigerant R32. a Compressor b Indoor heat exchanger c Expansion valve d Outdoor heat exchanger...

  • Page 13: Troubleshooting

    Troubleshooting 3 Troubleshooting 3.1 To display the error code on the wireless remote controller 1 Press to enter the main menu and navigate to the wireless remote control settings menu using Wireless remote control setting menu Software version (self-diagnosis menu) 2 Press to enter the menu.
  • Page 14 Troubleshooting Prerequisite: Power supply MUST be in the specified range. Prerequisite: Test run may be performed in cooling or heating mode. Prerequisite: Test run should be performed in accordance with the operation manual of the indoor unit to make sure that all functions and parts are working properly.

  • Page 15: Error Based Troubleshooting

    Troubleshooting 9 Check the function of operation modes. INFORMATION You CANNOT set the Econo, Outdoor unit silent and Powerful operation or change the temperature setpoint during the test run. 10 Check the error code history. If required, solve the cause of the errors and perform the test operation again.
  • Page 16 Troubleshooting 3.5.2 A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem Trigger Effect Reset During cooling operation, Unit will stop operating. Automatic reset when indoor heat exchanger temperature is within temperature is below 0°C range. (freeze‑up protection control).
  • Page 17 Troubleshooting 1 Perform a check of the indoor unit main PCB. See Indoor unit PCB. Possible cause: Faulty indoor unit main PCB. 2 Perform a check of the indoor unit fan motor. See Indoor unit fan motor. Possible cause: Faulty indoor unit fan motor. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.
  • Page 18 Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.6 C9-00 – Room thermistor abnormality Trigger Effect Reset Resistance value is out of Unit will stop operating. Automatic reset when range.
  • Page 19 Troubleshooting 3.5.8 CE-00 – Intelligent thermal sensor abnormality Trigger Effect Reset ▪ Disconnected sensor Unit will stop operating. Manual reset via user interface. ▪ Broken sensor ▪ Communication error To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the intelligent thermal sensor.
  • Page 20 Troubleshooting DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 6 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
  • Page 21 Troubleshooting 7 Perform a check of the outdoor unit fan motor. See Outdoor unit fan motor. Possible cause: Faulty outdoor unit fan motor. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.11 E5-00 –...
  • Page 22 Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.12 E6-00 – Outdoor unit: Compressor startup defect Trigger Effect Reset The motor rotor does Unit will NOT stop Automatic reset after a NOT rotate when the operating.
  • Page 23 Troubleshooting 3.5.13 E7-00 – Outdoor unit: Malfunction of outdoor unit fan motor Trigger Effect Reset Fan does NOT start Unit will stop operating. Manual reset via user 15~30 seconds after ON interface. signal. It can occur that the error code is triggered when the fan motor is running caused by a faulty rotating sensor signal.
  • Page 24 Troubleshooting Possible cause: ▪ Faulty or disturbance of the power supply (power supply MUST be within range of nominal operating voltage ±4%), ▪ Power drop, ▪ Short circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.
  • Page 25 Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.16 F3-00 – Outdoor unit: Malfunction of discharge pipe temperature Trigger Effect Reset Discharge pipe thermistor Unit will NOT stop Automatic reset when detects a too high operating.
  • Page 26 Troubleshooting 3.5.17 F6-00 – Outdoor unit: Abnormal high pressure in cooling Trigger Effect Reset Outdoor heat exchanger Unit will NOT stop Automatic reset when thermistor measures a operating. temperature drops. too high temperature. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Clean the outdoor heat exchanger.
  • Page 27 Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Check that all stop valves of the refrigerant circuit are open. See "5.2 Refrigerant circuit" [  62]. Possible cause: Closed stop valve in the refrigerant circuit. 2 Check if the refrigerant circuit is correctly charged.
  • Page 28 Troubleshooting DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 4 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
  • Page 29 Troubleshooting 3.5.21 H6-00 – Outdoor unit: Malfunction of position detection sensor Trigger Effect Reset Compressor fails to start Unit will NOT stop Automatic reset after a within 15 seconds after operating. continuous operation of the compressor run 10 minutes. command signal is sent. If the error re-occurs Manual reset via user within 8 minutes: unit will...
  • Page 30 Troubleshooting 3.5.22 H8-00 – Outdoor unit: Malfunction of compressor input system Trigger Effect Reset DC voltage or current Unit will NOT stop Automatic reset when sensor abnormality based operating. compressor runs normally on the compressor for 60 minutes. running frequency and If the error re-occurs too Manual reset via user the input current.
  • Page 31 Troubleshooting 3.5.24 J3-00 – Outdoor unit: Malfunction of discharge pipe thermistor Trigger Effect Reset Discharge pipe thermistor Unit will stop operating. Manual reset via user input is out of range. interface. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the discharge pipe thermistor.
  • Page 32 Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the main PCB. See Main PCB. Possible cause: Faulty main PCB. 2 Perform a check of the outdoor unit fan motor. See Outdoor unit fan motor. Possible cause: Faulty outdoor unit fan motor.
  • Page 33 Troubleshooting 4 Wait until the rectifier voltage is below 10 V DC. DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 5 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
  • Page 34 Troubleshooting Possible cause: ▪ Faulty or disturbance of the power supply (power supply MUST be within range of nominal operating voltage ±4%), ▪ Power drop, ▪ Short circuit. Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 8 Wait until the rectifier voltage is below 10 V DC.
  • Page 35 Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of all refrigerant side thermistors. See Thermistors. Possible cause: Faulty refrigerant side thermistor(s). 2 Check that all stop valves of the refrigerant circuit are open. See "5.2 Refrigerant circuit" [  62].
  • Page 36 Troubleshooting Possible cause: ▪ Faulty or disturbance of the power supply (power supply MUST be within range of nominal operating voltage ±4%), ▪ Power drop, ▪ Short circuit. 2 Perform a check of the compressor. See Compressor. Possible cause: Faulty compressor or miswiring of the compressor power supply cable.
  • Page 37 Troubleshooting 3 Perform a check of the main PCB. See Main PCB. Possible cause: Faulty main PCB. 4 Perform a check of the outdoor unit fan motor. See Outdoor unit fan motor. Possible cause: Faulty outdoor unit fan motor. 5 Perform a check of the indoor unit main PCB. See Indoor unit PCB. Possible cause: Faulty indoor unit main PCB.
  • Page 38 Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.34 UA-00 – Indoor unit, outdoor unit mismatching problem Trigger Effect Reset Signal transmission Unit will stop operating. Power reset via outdoor between outdoor and unit.
  • Page 39 Troubleshooting ▪ A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem ▪ U0-00 – Outdoor unit: Shortage of refrigerant ▪ UA-00 – Indoor unit, outdoor unit mismatching problem Possible cause: Error on other indoor unit. 2 Perform a check of the indoor unit main PCB. See Indoor unit PCB. Possible cause: Faulty indoor unit main PCB.
  • Page 40 Troubleshooting 3.6 Symptom based troubleshooting 3.6.1 Operation does not start Check Detail When the operation lamp is off, there is ▪ Is the power supply breaker ON? a power failure. ▪ Do other electrical appliances work? Check the power supply. ▪...
  • Page 41 Troubleshooting Check Detail Check the outdoor temperature. ▪ Heating operation cannot be used when the outdoor temperature is 18°C WB or higher. ▪ Cooling operation cannot be used when the outdoor temperature is below −10°C DB. When the operation lamp blinks, there "3.5 Error based may be an error code, activating the troubleshooting" [...
  • Page 42 Troubleshooting Check Detail Check the installation conditions ▪ Does installed model (specified in the installation manual). sufficient capacity? ▪ Is there a short circuit air flow caused by insufficient installation space? Check the outdoor temperature. ▪ Heating operation cannot be used when the outdoor temperature is 18°C WB or higher.
  • Page 43 Troubleshooting 3.6.5 Abnormal high pressure In cooling mode Check item Detail Does the outdoor unit fan run Visual inspection normally? Is the outdoor unit heat exchanger Visual inspection clogged? Is there clogging before or after the ▪ Check if there is a temperature expansion valve (capillary)? difference before and after expansion valve (capillary).
  • Page 44 Troubleshooting Check item Detail Is the refrigerant overcharged? Conduct refrigerant collection and vacuum drying, and then add proper amount refrigerant. 3.6.6 Abnormal low pressure Abnormally low pressure level is mostly caused by the evaporator side. The following contents are provided based on field checking of service engineer. Further, the number is listed in the order of degree of influence.
  • Page 45 Troubleshooting Check item Detail Is the outdoor unit installed under such Visual inspection conditions that short circuit easily occurs? Is there a shortage of refrigerant? Conduct refrigerant collection and vacuum drying, and then add proper amount refrigerant. 3.6.7 Indoor fan starts operating but the compressor does not operate Check Detail Check the power supply.
  • Page 46 Troubleshooting 3.6.8 Operation starts and the unit stops immediately Check Detail Check the power supply. ▪ Is the capacity of the safety breaker as specified? ▪ If the earth leakage breaker is too sensitive, then increase the set value of the earth leakage current of the breaker or replace the breaker.
  • Page 47 Ceiling too high for the floor size. ▪ Short circuit air flow caused by insufficient installation space. Check the installation. ▪ Is the proper humidification hose, specified by Daikin, used? ▪ Breakage blockage humidification hose. ▪ Is the length of the humidification hose correct (within specified length)? ▪...

  • Page 48: Plate Work

    Components 4 Components CAUTION When replacing a component ALWAYS make sure the correct spare part for your unit is installed. 4.1 Plate work 4.1.1 Outdoor unit To remove the refrigerant connection cover DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING 1×...
  • Page 49 Components DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 2 Loosen and remove the screws that fix the top plate. a Screw b Top plate 3 Remove the top plate.
  • Page 50 Components a Insulation b Main PCB 2 Disconnect all connectors from the main PCB. 3 Disconnect the electrical power supply wiring from the wire terminals. a Electrical power supply wiring b Wire terminals c Screws d Wire clamp e Screws f Right side plate assembly 4 Remove the screws that fix the wire clamp.
  • Page 51 Components 5 Remove the wire clamp. 6 Remove the screws that fix the right side plate assembly. 7 Cut the cable tie. a Cable tie b Switch box 8 Lift and remove the switch box from the outdoor unit. 9 To install the switch box, see "4.1 Plate work" [  48].
  • Page 52 Components a Electrical power supply wiring b Wire terminals c Screws d Wire clamp e Screws f Right side plate assembly 3 Connect the electrical power supply wiring to the wire terminals. 4 Install the wire clamp and fix it using the screws. 5 Connect all connectors to the main PCB.

  • Page 53: Indoor Unit

    Components a Cable tie b Switch box 7 Install the insulation on the upper side of the switch box. a Insulation b Main PCB 4.1.2 Indoor unit To open the front panel 1 Stop operation by Result: The front panel closes automatically. 2 Open the front panel using the wireless remote control.
  • Page 54 Components a Lock (1 on each side) b Backside of the front panel c Fixing tab d Support INFORMATION If you CANNOT find the wireless remote control or you use another optional controller. Pull the front panel carefully up by hand as shown in the following figure. To remove the front panel INFORMATION Remove the front panel only in case it MUST be replaced.
  • Page 55 Components a Arm b Shaft slot c Shaft 5 Remove the front panel. 6 To re-install the front panel, perform the steps in the opposite order. To remove the front grille CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system.
  • Page 56 Components a Hook Prerequisite: If working space is limited. 7 Slide the flat screwdriver in the direction of triangle on the rib into the half- moon shaped dent on the grille. a Triangle symbol 8 Slightly press down the front grille and insert the screwdriver in slot next to the hooks.
  • Page 57 Components NOTICE When closing the service cover, make sure that the tightening torque does NOT exceed 1.4 (±0.2) N•m. TO REMOVE THE ELECTRICAL WIRING BOX COVER Prerequisite: Remove the front grille. 1 Remove 1 screw from the electrical wiring box. 2 Open the electrical wiring box cover by pulling it to the front. 3 Remove the electrical wiring box cover from the 2 rear hooks.
  • Page 58 Components a Power supply terminal X1M b Power supply wiring bracket c Screw (ground wire) d Indoor unit main PCB e Switch box screw f Switch box 5 Disconnect the connectors of the indoor unit fan motor and the swing flap motors from the indoor unit PCB.
  • Page 59 Components 4 Install the heat exchanger thermistor in its holder. 5 Attach the wiring harnesses to the switch box as needed. 6 Connect the grounding wire to the heat exchanger using the screw. 7 Connect the power supply wiring to the power supply terminal X1M. 8 Install the power supply wiring bracket.

  • Page 60: Third Party Components

    Third party components 5 Third party components 5.1 Electrical circuit 5.1.1 Checking procedures To check the power supply of the unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.1 Plate work" [  48].
  • Page 61 Third party components Does the unit receive power? Action Correct the wiring from the main power supply terminal to the indoor unit power supply terminal, see "5.1.2 Repair procedures" [  61]. Adjust the power supply to the unit, see "5.1.2 Repair procedures" [  61]. To check if the power supply is compliant with the regulations 1 Check that the power source is in line with the requirements described in the databook.

  • Page 62: Refrigerant Circuit

    Third party components To correct the wiring from the main power supply terminal to the indoor unit power supply terminal Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.1 Plate work" [  48].
  • Page 63 Third party components a Liquid stop valve b Gas stop valve 2 Check if the stop valves are completely open. The refrigerant circuit stop valves are Action open? Return to the troubleshooting of the specific error and continue with the next procedure.
  • Page 64 Third party components INFORMATION Focus on positions with a potential risk for clogging such as: ▪ Filters ▪ Valves ▪ Brazing points ▪ … INFORMATION A bigger temperature drop before and after the expansion valve can be normal, however excessive ice is indicating a malfunction of the expansion valve or internal obstruction of the valve (dirt or ice build up in case of humidity in the system).
  • Page 65 Third party components Heating The electronic expansion valve is closed due to the overload control. Frequency comes to the minimum level. (High pressure is High maintained at a pressure constant level.) High pressure drops or rises immediately after the pressure overload control is complete.
  • Page 66 Third party components Heating The opening degree of the electronic expansion valve becomes larger. The electronic expansion valve fully opens and frequency increases. Discharge pipe or low pressure drooping control. High Frequency comes to pressure the minimum level. (High pressure is maintained at a constant level.) pressure...
  • Page 67 Third party components Is the pressure in the refrigerant circuit Action correct? Return to the troubleshooting of the specific error and continue with the next procedure. Replace the leaking part of the refrigerant circuit, see "5.2.2 Repair procedures" [  67]. To check if the refrigerant field piping is compliant with the regulations 1 Check if the refrigerant field piping is compliant with the regulations.
  • Page 68 Third party components To replace the clogged/leaking part of the refrigerant circuit 1 See the correct procedure for the component that needs to be repaired. See also "Repair information" [  69] for more details. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
  • Page 69 Third party components To add refrigerant 1 See the installer reference guide for the correct procedure. Is the problem solved? Action No further actions required. Return to troubleshooting of the specific error and continue with the next procedure. Repair information Refrigerant piping handling ▪...

  • Page 70: External Factors

    Third party components 3 Perform pump down operation, see installer reference guide for the correct procedure. 4 After 5~10  minutes (after only 1~2  minutes in case temperature <–10°C), close the liquid stop valve using a hexagonal wrench. 5 Check the manifold if vacuum is reached. Close the gas stop valve and stop forced cooling operation.
  • Page 71 Third party components To check for objects that may block the airflow 1 Check for the presence of object(s) near the indoor unit that may block the airflow. Remove the object(s) as needed. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.

  • Page 72: Maintenance

    General maintenance/inspection checklist. Next to the maintenance instructions in this chapter, a general maintenance/inspection checklist is also available on the Daikin Business Portal (authentication required). The general maintenance/inspection checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during maintenance.
  • Page 73 Maintenance 6.3 To clean the indoor unit heat exchanger in extreme condition When cleaning the indoor unit heat exchanger (contaminated by cooking oil, …), make sure to: ▪ Use proper field supply cleaning agent which is suitable for cleaning heat exchangers and drain pans.

  • Page 74: To Clean The Air Filters

    Maintenance 6.5 To clean the front panel 1 Clean the front panel with a soft cloth. If it is difficult to remove stains, use water or a neutral detergent. 6.6 To clean the air filters 1 Push the tab at the centre of each air filter, then pull it down. 2 Pull out the air filters.
  • Page 75 Maintenance INFORMATION ▪ If the dust does NOT come off easily, wash the air filters with a neutral detergent diluted in lukewarm water. Dry the air filters in the shade. ▪ Be sure to remove the titanium apatite deodorising and silver particle filters. ▪...
  • Page 76 Maintenance 6.8 To replace the titanium apatite deodorising filter and the silver particle filter (Ag-ion filter) INFORMATION Replace the filter every 3 years. To order titanium apatite deodorising filter or silver particle filters, contact your dealer. Item Part number Titanium deodorising filter KAF970A46 Silver particle filter KAF057A41...

  • Page 77: Technical Data

    Technical data 7 Technical data 7.1 Detailed information setting mode 7.1.1 Detailed information setting mode: Indoor unit See the installer reference guide on business portal for more information. 7.1.2 Detailed information setting mode: Outdoor unit See the installer reference guide on business portal for more information. 7.1.3 Detailed information setting mode: Remote controller See the installer reference guide on business portal for more information.

  • Page 78: Wiring Diagram

    Technical data 7.2 Wiring diagram 7.2.1 Wiring diagram: Indoor unit Unified wiring diagram legend For applied parts and numbering, refer to the wiring diagram on the unit. Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by "*"...
  • Page 79 Technical data Symbol Meaning Heater FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground) Harness H*P, LED*, V*L Pilot lamp, light emitting diode Light emitting diode (service monitor green) HIGH VOLTAGE High voltage Intelligent eye sensor IPM* Intelligent power module K*R, KCR, KFR, KHuR, K*M...
  • Page 80 Technical data Symbol Meaning Float switch S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S Surge arrester SR*, WLU Signal receiver Selector switch SHEET METAL...
  • Page 81 Technical data Wiring diagram INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. Streamer unit Streamer part Indoor S400 S500...
  • Page 82 Technical data 7.2.2 Wiring diagram: Outdoor unit Unified wiring diagram legend For applied parts and numbering, refer to the wiring diagram on the unit. Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by "*" in the part code. Symbol Meaning Symbol...
  • Page 83 Technical data Symbol Meaning FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground) Harness H*P, LED*, V*L Pilot lamp, light emitting diode Light emitting diode (service monitor green) HIGH VOLTAGE High voltage Intelligent eye sensor IPM* Intelligent power module K*R, KCR, KFR, KHuR, K*M...
  • Page 84 Technical data Symbol Meaning S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S Surge arrester SR*, WLU Signal receiver Selector switch SHEET METAL Terminal strip fixed plate...
  • Page 85 Technical data RXJ20~35A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. Wiring diagram Indoor IPM1 MRM10 MRM20 W V U...

  • Page 86: Piping Diagram: Indoor Unit

    Technical data 7.3 Piping diagram 7.3.1 Piping diagram: Indoor unit FTXJ20~35A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book.
  • Page 87 Technical data FTXJ42+50A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·6.4· CuT ·12.7· CuT a Field piping (liquid: Ø6.4 mm flare connection) b Field piping (gas: Ø9.5 mm flare connection) c Crossflow fan...

  • Page 88: Piping Diagram: Outdoor Unit

    Technical data 7.3.2 Piping diagram: Outdoor unit RXJ20~35A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·7.0·...
  • Page 89 Technical data RXJ42+50A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·7.0· CuT ·7.0· CuT ·4.0·...

  • Page 90: Field Information Report

    Technical data 7.4 Field information report See next page. RXJ20~50A + FTXJ-A(W)(S)(B) Service manual Split Emura 3 R32 ESIE22-04 – 2022.04 draft – 22/04/2022 08:50...
  • Page 91 In case a problem occurred on the unit which could not be resolved by using the content of this service manual or in case you have a problem which could be resolved but of which the manufacturer should be notified, we advise you to contact your distributor.
  • Page 92 Application information Application (house, apartment, office,…): New project or reimbursement: Heat emitters (radiators / under floor heating / fan coils /…): Hydraulic layout (simple schematic): Unit / Installation information Model name: Serial number: Installation / commissioning date: Software version hydro PCB A1P Software version hydro PCB A5P Software version user interface: Software version outdoor PCB:...

  • Page 93: Service Tools

    Technical data 7.5 Service tools 1 For an overview of the available service tools, check the Daikin Business Portal (authentication required). 2 Go to the tab After-sales support on the left navigation pane and select Technical support. 3 Click the button Service tools. An overview of the available service tools for the different products is shown.

  • Page 94: Field Settings: Indoor Unit

    Technical data 7.6 Field settings 7.6.1 Field settings: Indoor unit To retrieve the field settings Via the wireless remote controller ARC488A1 a LCD display b Temperature up/down and menu navigation up/down buttons c ON/OFF button d Powerful operation button e Menu navigation left/right buttons f Confirm button g Main menu button h Outdoor unit silent operation...
  • Page 95 Technical data 6 Navigate to the self‑diagnosis menu using Self‑diagnosis menu 7 Keep pressed for at least 5 seconds. Result: Self‑diagnosis menu is entered. 8 Enter password 5902 using 9 Press to confirm password. 10 Navigate to the Service menu using Service menu 11 Press to confirm.
  • Page 96 Technical data Overview of field settings for indoor units The overview lists all possible settings for the indoor units. Bold content is default setting. Mode Description function Setting Description selection Suspend (Reduce the standby power consumption) Suspend ON Suspend OFF Preheating (pre‑heating of compressor by motor) Cooling room temperature correction Low 2...

  • Page 97: Field Settings: Outdoor Unit

    Technical data 7.6.2 Field settings: Outdoor unit To reduce maximum sound levels If the sound level CANNOT meet the local regulation (e.g. Netherlands), the maximum sound level can be reduced by cutting J5 jumper on the main PCB of the outdoor unit.
  • Page 100 ESIE22-04 2022.04 Verantwortung für Energie und Umwelt draft – 22/04/2022 08:50...

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