Daikin Sensira RXQ25AMV1B Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Air Conditioner
  5. RXQ25AMV1B
  6. Service manual

Daikin Sensira RXQ25AMV1B Service Manual

Split r32 bbop
Hide thumbs Also See for Sensira RXQ25AMV1B:
Table of Contents

Advertisement

Quick Links

RXQ25AMV1B
RXQ35AMV1B
ARXQ25AMV1B
ARXQ35AMV1B
FTXQ25AMV1B
FTXQ35AMV1B
ATXQ25AMV1B
ATXQ35AMV1B
Service manual
Split Sensira R32 BBOP

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Sensira RXQ25AMV1B and is the answer not in the manual?

Questions and answers

Μητσοπουλου κωνσταντινα
March 9, 2025

Τι προέλευσης είναι αυτό το μοντέλο???RXQ25AMV1B

0

Related Manuals for Daikin Sensira RXQ25AMV1B

Summary of Contents for Daikin Sensira RXQ25AMV1B

  • Page 1 Service manual Split Sensira R32 BBOP RXQ25AMV1B RXQ35AMV1B ARXQ25AMV1B ARXQ35AMV1B FTXQ25AMV1B FTXQ35AMV1B ATXQ25AMV1B ATXQ35AMV1B...
  • 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 code Description Date ESIE21-16 Document release February 2022 RXQ25+35AMV1B + ARXQ25+35AMV1B + FTXQ25+35AMV1B + Service manual ATXQ25+35AMV1B Split Sensira R32 BBOP ESIE21-16 – 2022.02...

  • Page 4: Table Of Contents

    Table of contents Table of contents 1 Safety precautions Meaning of warnings and symbols..........................Dangers ................................... Warnings ..................................Cautions ..................................13 Notices .................................... 13 2 Troubleshooting To display the error code on the user interface ......................14 To reset the error code via remote controller ....................... 14 To reset the error code via outdoor unit ........................
  • Page 5 Table of contents Expansion valve................................65 3.4.1 Checking procedures ............................65 3.4.2 Repair procedures ............................69 Indoor unit fan motor ..............................72 3.5.1 Checking procedures ............................72 3.5.2 Repair procedures ............................73 Indoor unit main PCB ..............................74 3.6.1 Checking procedures ............................74 3.6.2 Repair procedures ............................

  • Page 6: 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 7: Dangers

    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 8 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 9 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 10 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 11 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 12 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 13: Cautions

    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 14: Troubleshooting

    Troubleshooting 2 Troubleshooting 2.1 To display the error code on the user interface 1 Hold for about 5 seconds. Result: blinks in the temperature display section. 2 Press repeatedly until a continuous beep is heard. Result: The code is now displayed on the display. INFORMATION ▪...

  • Page 15: To Perform A Test Run In Winter Season

    Troubleshooting INFORMATION ▪ Even if the unit is turned OFF, it consumes electricity. ▪ When the power turns back on after a power break, the previously selected mode will be resumed. 2.4.1 To perform a test run in winter season When operating the air conditioner in Cooling mode in winter, set it to test run operation using the following method.

  • Page 16: A5-00 - Outdoor Unit: High Pressure Peak Cut / Freeze Protection Problem

    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. 4 Perform a check of the indoor unit main PCB. See "3.6  Indoor unit main PCB" [  74].

  • Page 17: A6-00 - Indoor Unit Fan Motor Abnormality

    Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.3 A6-00 – Indoor unit fan motor abnormality Trigger Effect Reset The rotation speed of the Unit will stop operating. Power reset via the fan motor is NOT outdoor unit.

  • Page 18: C9-00 - Room Thermistor Abnormality

    Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.5 C9-00 – Room thermistor abnormality Trigger Effect Reset Resistance value is out of Unit will stop operating. Automatic reset when range.

  • Page 19: E5-00 - Outdoor Unit: Overheat Of Inverter Compressor Motor

    Troubleshooting 3 Perform a check of the outdoor unit fan motor. See "3.9  Outdoor unit fan motor" [  90]. Possible cause: Faulty outdoor unit fan motor. 4 Perform a check of the compressor. See "3.2 Compressor" [  50]. Possible cause: Faulty compressor or miswiring of the compressor power supply cable.

  • Page 20: E6-00 - Outdoor Unit: Compressor Startup Defect

    Troubleshooting Possible cause: Faulty expansion valve. 6 Perform a check of the 4‑way valve. See "3.1 4-way valve" [  44]. Possible cause: Faulty 4‑way valve. 7 Perform a check of the main PCB. See "3.8 Main PCB" [  81]. Possible cause: Faulty main PCB. 8 Check if the refrigerant circuit is correctly charged.

  • Page 21: E7-00 - Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting 6 Perform a check of the compressor. See "3.2 Compressor" [  50]. Possible cause: Faulty compressor or miswiring of the compressor power supply cable. 7 Perform a check of the main PCB. See "3.8 Main PCB" [  81]. Possible cause: Faulty main PCB. 8 Perform a check of the 4‑way valve.

  • Page 22: Outdoor Unit: Cool/Heat Switchover Problem

    Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Check the outdoor temperature. See "4.3 External factors" [  127]. Possible cause: Outdoor temperature is out of operation range. 2 Perform a check of the compressor. See "3.2 Compressor" [  50].

  • Page 23: F3-00 - Outdoor Unit: Malfunction Of Discharge Pipe Temperature

    Troubleshooting Possible cause: Faulty indoor unit main PCB. 5 Check that all stop valves of the refrigerant circuit are open. See "4.2 Refrigerant circuit" [  120]. Possible cause: Closed stop valve in the refrigerant circuit. 6 Check if the refrigerant circuit is clogged. See "4.2 Refrigerant circuit" [  120].

  • Page 24: F6-00 - Outdoor Unit: Abnormal High Pressure In Cooling

    Troubleshooting Possible cause: Faulty expansion valve. 7 Perform a check of the main PCB. See "3.8 Main PCB" [  81]. Possible cause: Faulty main PCB. 8 Perform check refrigerant side thermistors. "3.13 Thermistors" [  108]. Possible cause: Faulty refrigerant side thermistor(s). INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.

  • Page 25: F8-00 - System Shutdown Due To Compressor Internal Temperature Abnormality

    Troubleshooting 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. 2.5.14 F8-00 – System shutdown due to compressor internal temperature abnormality Trigger Effect Reset Temperature discharge Unit will stop operating.

  • Page 26: H6-00 - Outdoor Unit: Malfunction Of Position Detection Sensor

    Troubleshooting 1 Perform a check of the main PCB. See "3.8 Main PCB" [  81]. Possible cause: Faulty main PCB. 2 Check if the power supply is compliant with the regulations. See "4.1 Electrical circuit" [  118]. Possible cause: ▪ Faulty or disturbance of the power supply (power supply MUST be within range of nominal operating voltage ±4%), ▪...

  • Page 27: H8-00 - Outdoor Unit: Malfunction Of Compressor Input System

    Troubleshooting Possible cause: Closed stop valve in the refrigerant circuit. 4 Check if the refrigerant circuit is clogged. See "4.2 Refrigerant circuit" [  120]. Possible cause: Clogged refrigerant circuit. 5 Check if the refrigerant circuit is correctly charged. See "4.2  Refrigerant circuit" [  120].

  • Page 28: H9-00 - Outdoor Unit: Malfunction Of Outdoor Air Thermistor

    Troubleshooting 2.5.18 H9-00 – Outdoor unit: Malfunction of outdoor air thermistor Trigger Effect Reset Outdoor air 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 outdoor air thermistor.

  • Page 29: L3-00 - Outdoor Unit: Electrical Box Temperature Rise Problem

    Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform check heat exchanger thermistor. "3.13 Thermistors" [  108]. Possible cause: Faulty heat exchanger thermistor. 2 Perform a check of the main PCB. See "3.8 Main PCB" [  81].

  • Page 30: L4-00 - Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise

    Troubleshooting 2.5.22 L4-00 – Outdoor unit: Malfunction of inverter radiating fin temperature rise Trigger Effect Reset Radiating fin thermistor Unit will stop operating. Manual reset via user measures a too high interface. temperature. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the outdoor unit fan motor.
  • Page 31 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 "4.2 Refrigerant circuit" [  120]. Possible cause: Closed stop valve in the refrigerant circuit. 2 Check if the refrigerant circuit is clogged.

  • Page 32: P4-00 - Outdoor Unit: Malfunction Of Radiating Fin Temperature Sensor

    Troubleshooting 2.5.24 P4-00 – Outdoor unit: Malfunction of radiating fin temperature sensor Trigger Effect Reset Radiating fin 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 main PCB.

  • Page 33: U2-00 - Outdoor Unit: Defect Of Power Supply Voltage

    Troubleshooting Possible cause: Faulty expansion valve. 8 Check for leaks in the refrigerant circuit. Look for oil traces on the unit(s). Check the brazing points on the field piping. Perform a pressure test, see "4.2 Refrigerant circuit" [  120]. Possible cause: Leak in the refrigerant circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.

  • Page 34: U4-00 - Indoor/Outdoor Unit Communication Problem

    Troubleshooting 2.5.27 U4-00 – Indoor/outdoor unit communication problem Trigger Effect Reset Communication failure Unit will stop operating. Power reset via outdoor between outdoor and unit. indoor unit. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Check if the power supply is compliant with the regulations.

  • Page 35: Indoor Unit, Outdoor Unit Mismatching Problem

    Troubleshooting 2.5.28 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. indoor unit abnormality. Improper combination of outdoor and indoor unit. To solve the error code INFORMATION It is recommended to perform the checks in the listed order.

  • Page 36: Symptom Based Troubleshooting

    Troubleshooting 2.6 Symptom based troubleshooting 2.6.1 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 37: Operation Starts But The Unit Does Not Cool/Heat

    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 "2.5 Error based may be an error code, activating the troubleshooting" [...

  • Page 38: Operating Noise And Vibrations

    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 39: Abnormal High Pressure

    Troubleshooting 2.6.5 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 40: Abnormal Low Pressure

    Troubleshooting Check item Detail Is the refrigerant overcharged? Conduct refrigerant collection and vacuum drying, and then add proper amount refrigerant. 2.6.6 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 41: Indoor Fan Starts Operating But The Compressor Does Not Operate

    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. 2.6.7 Indoor fan starts operating but the compressor does not operate Check Detail Check the power supply.

  • Page 42: Operation Starts And The Unit Stops Immediately

    Troubleshooting 2.6.8 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 43: Unit Discharges White Mist

    Troubleshooting 2.6.10 Unit discharges white mist Check Detail Check installation conditions. ▪ Humid site. ▪ Dirty site. ▪ Oil mist. Check installation conditions. Dirty heat exchanger. Air filter. Dirty air filter. Fan motor. Defective fan motor. 2.6.11 Swing flap does not operate Symptom Check Detail...

  • Page 44: Components

    Components 3 Components CAUTION When replacing a component ALWAYS make sure the correct spare part for your unit is installed. 3.1 4-way valve 3.1.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the 4-way valve Prerequisite: Stop the unit operation via the user interface.
  • Page 45 Components When outdoor temperature is mild and unit can switch between heating and cooling INFORMATION This procedure is ONLY possible when the outdoor temperature is within the temperature range for both Heating and Cooling operation mode. See the databook on Business Portal for the temperature range of the operation modes. 1 Connect the 4‑way valve connector to the appropriate PCB.
  • Page 46 Components To perform a position check of the 4-way valve 1 First perform an electrical check of the 4‑way valve, see "3.1.1  Checking procedures" [  44]. When outdoor temperature is mild and unit can switch between heating and cooling INFORMATION This procedure is ONLY possible when the outdoor temperature is within the temperature range for both Heating and Cooling operation mode.

  • Page 47: Repair Procedures

    Components When outdoor temperature does not allow the unit to run in cooling or heating mode INFORMATION Follow this procedure when the outdoor temperature is outside the temperature range for one of the operation modes (Heating or Cooling). The unit CANNOT operate in the mode for which the outdoor temperature is outside its temperature range.
  • Page 48 Components a Screw b 4‑way valve coil c 4‑way valve body 2 Cut all tie straps that fix the 4‑way valve coil harness. 3 Unplug the 4-way valve connector from the appropriate PCB. 4 To install the 4‑way valve coil, see "3.1.2 Repair procedures" [  47].
  • Page 49 Components INFORMATION It is ALSO possible to cut the component pipe(s) using a pipe cutter. Make sure to remove the remaining component pipe end(s) from the refrigerant pipes by heating the brazing point(s) of the component pipe(s) using an oxygen acetylene torch. 7 Install plugs or caps on the open pipe ends of the refrigerant piping to avoid dirt or impurities from entering the piping.

  • Page 50: Compressor

    Components a Screw b 4‑way valve coil c 4‑way valve body 2 Install and tighten the screw to fix the 4‑way valve coil. 3 Route the 4‑way valve coil harness towards the appropriate PCB. 4 Connect the 4-way valve connector to the appropriate PCB. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector...
  • Page 51 Components 4 Wait for - or create condition to operate the compressor. 5 Listen to the compressor when it tries to operate. Judge if a mechanical lock is present. INFORMATION If you have a multimeter with data logging functionality, record the current in 1 of the U‑V‑W wires at compressor start‑up.
  • Page 52 Components a Damper INFORMATION The compressor dampers may look different. Compressor dampers are in a good Action condition? Perform an electrical check of the compressor, see "3.2.1 Checking procedures" [  50]. Replace the compressor and/or damaged dampers, see "3.2.2 Repair procedures" [  56]. To perform an electrical check of the compressor 1 First perform a mechanical check of the compressor, see "3.2.1 ...
  • Page 53 Components a Compressor wire terminals cover 3 Disconnect the Faston connectors from the compressor wire terminals U, V and W. INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation. U Wire terminal U V Wire terminal V W Wire terminal W CAUTION...
  • Page 54 Components Compressor motor winding Action measurements are correct? Continue with the next step. Replace the compressor, see "3.2.2 Repair procedures" [  56]. 5 Measure the continuity of the U, V and W wires between the compressor and the PCB. If no continuity, correct as needed, see "6.2 Wiring diagram" [  133].
  • Page 55 Components Compressor motor winding current Action measurements are correct? Perform an insulation check of the compressor, see "3.2.1 Checking procedures" [  50]. Preventively replace the compressor, "3.2.2 Repair procedures" [  56]. To perform an insulation check of the compressor Prerequisite: First perform an electrical check of the compressor, see "3.2.1 Checking procedures" [  50].

  • Page 56: Repair Procedures

    Components U Wire terminal U V Wire terminal V W Wire terminal W 4 Set the Megger voltage to 500 V DC or 1000 V DC. 5 Measure the insulation resistance between the following terminals. The measured insulation resistance MUST be >3 MΩ. ▪ U–ground, ▪...
  • Page 57 Components a Compressor wire terminals cover 3 Disconnect the Faston connectors from the compressor wire terminals U, V and W. INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation. U Wire terminal U V Wire terminal V W Wire terminal W 4 Remove the compressor thermal protector, see...
  • Page 58 Components a Compressor pipe 7 Stop the nitrogen supply when the piping has cooled down. INFORMATION It is ALSO possible to cut the component pipe(s) using a pipe cutter. Make sure to remove the remaining component pipe end(s) from the refrigerant pipes by heating the brazing point(s) of the component pipe(s) using an oxygen acetylene torch.
  • Page 59 Components 3 Remove the plugs or caps from the refrigerant piping and make sure they are clean. 4 Remove the caps from the compressor pipes (of the new compressor). CAUTION The oil in the compressor is hygroscopic. Therefore remove the caps from the compressor pipes as late as possible.
  • Page 60 Components CAUTION Overheating the compressor pipes (and the oil inside the compressor pipes) will damage or destroy the compressor. 9 After soldering is done, stop the nitrogen supply after the component has cooled‑down. 10 Install the compressor thermal protector, see "To install the compressor thermal protector" [...

  • Page 61: Compressor Thermal Protector

    Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 3.3 Compressor thermal protector 3.3.1 Checking procedures To perform a mechanical check of the compressor thermal protector Prerequisite: Stop the unit operation via the user interface.

  • Page 62: Repair Procedures

    Components a Compressor thermal protector b Faston connector c Bracket 3 If in doubt, measure the temperature of the compressor thermal protection. Result: The temperature MUST be below 85°C. 4 Disconnect the Faston connectors from the compressor thermal protection. INFORMATION Make sure that the wiring between the compressor thermal protector and the connector on the PCB is properly connected and NOT damaged (check continuity), "6.2 Wiring...
  • Page 63 Components Prerequisite: Remove the required plate work, see "3.10 Plate work" [  94]. Prerequisite: Remove the compressor insulation. 1 Remove the cover of the compressor wire terminals. a Compressor wire terminals cover 2 Remove the compressor thermal protector with bracket from the compressor housing.
  • Page 64 Components a Compressor thermal protector b Compressor thermal protector bracket 5 To install compressor thermal protector, "3.2.2  Repair procedures" [  56]. To install the compressor thermal protector 1 Install the compressor thermal protector on the compressor thermal protector bracket. a Compressor thermal protector b Compressor thermal protector bracket 2 Connect the Faston connectors to the compressor thermal protector.

  • Page 65: Expansion Valve

    Components a Compressor wire terminals cover 5 Install the compressor insulation. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 3.4 Expansion valve 3.4.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order.
  • Page 66 Components 3 Slide the expansion valve magnet over the expansion valve body and gently rotate the magnet clockwise/counterclockwise to manually close/open the expansion valve. Listen to check if the valve is closing/opening and manually close the valve when check is done. INFORMATION After the check, remove the magnet from the expansion valve body and install the expansion valve coil on the expansion valve body.
  • Page 67 Components 1 2 3 4 5 a Connector ▪ Connector pin 1‑6, ▪ Connector pin 2‑6, ▪ Connector pin 3‑6, ▪ Connector pin 4‑6. a Connector 3 Check the insulation resistance of the coil by measuring the resistance between the pins of each phase (1, 2, 3, 4) and GND on the unit. Result: None of the measurements should be short‑circuit.
  • Page 68 Components 3 With the unit operating, connect the service monitoring tool to the unit. 4 When the expansion valve is closed according to the service monitoring tool, check the inlet and outlet of the valve with a contact thermometer or use an expansion valve stethoscope to see if refrigerant flows through the expansion valve.

  • Page 69: Repair Procedures

    Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 3.4.2 Repair procedures To remove the expansion valve coil Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.10 Plate work" [...
  • Page 70 Components a Putty b Expansion valve pipe c Expansion valve body 3 Using a valve magnet, open the expansion valve. 4 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa. 5 Wrap a wet rag around the components near the expansion valve pipes. Heat the brazing points of the expansion valve pipes using an oxygen acetylene torch and remove the expansion valve pipes from the refrigerant pipes using pliers.
  • Page 71 Components 7 After soldering is done, stop the nitrogen supply after the component has cooled‑down. a Putty b Expansion valve pipe c Expansion valve body INFORMATION The expansion valve and coil can have a different configuration / layout. 8 Reinstall the putty. 9 To install the expansion valve coil, see "3.4.2 Repair procedures" [...

  • Page 72: Indoor Unit Fan Motor

    Components WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector pins of the PCB. 4 Fix the expansion valve coil harness using new tie straps. 5 Install the insulation cap on the expansion valve coil (if applicable).

  • Page 73: Repair Procedures

    Components 3 Measure the resistance between the pins 6-9, 6-12, and 9-12 of the DC fan motor connector. Result: All measurements MUST be 0.078 Ω. 4 Check the diode module by measuring the voltage between the following pins of the DC fan motor connector. Comm Voltage 13.5 V DC...

  • Page 74: Indoor Unit Main Pcb

    Components To install the DC fan motor assembly 1 Install the indoor unit fan motor in its correct location on the fan. 2 Install the rubber in front of the fan motor. 3 Click the indoor unit fan motor cover on the indoor unit. If removed, install and tighten the screw on the right hand side of the fan motor cover.
  • Page 75 Components a Black wire b White wire Is the measured voltage on the indoor Action unit PCB correct? Return to "3.6.1 Checking procedures" [  74] of the indoor unit PCB and continue with the next procedure. Continue with the next step. 3 Check the power supply to the indoor unit, see "4.1.1 ...
  • Page 76 Components Is the correct spare part for the indoor Action unit main PCB installed? Replace the indoor unit main PCB, see "3.6.2 Repair procedures" [  77]. To check the wiring of the indoor unit main PCB Prerequisite: First perform all earlier checks of the indoor unit main PCB, see "3.6.1 Checking procedures" [  74].

  • Page 77: Repair Procedures

    Components Blown fuse on the indoor unit main Action PCB? Return to "3.6.1 Checking procedures" [  74] of the indoor unit main PCB and continue with the next procedure. Problem solved? After all checking procedures listed above have been performed: Is the problem solved? Action No further actions required.
  • Page 78 Components a Indoor unit main PCB b PCB support 3 Remove the indoor unit main PCB from the indoor unit. 4 To install the indoor unit main PCB, see "3.6.2 Repair procedures" [  77]. To install the indoor unit main PCB 1 Install the indoor unit main PCB in the correct location on the PCB supports. a Indoor unit main PCB b PCB support 2 Connect all connectors to the indoor unit main PCB.
  • Page 79 Components To remove a fuse of the indoor unit main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.10 Plate work" [  94]. 1 Remove the fuse from the PCB. a Fuse 2 To install a fuse on the indoor unit PCB, see "3.6.2 Repair...

  • Page 80: Inverter Pcb

    Components 3.7 Inverter PCB 3.7.1 Checking procedures As the inverter PCB is integrated in the main PCB of the unit, see "3.8  Main PCB" [  81] for the other check procedures. To perform an electrical check of the inverter PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.

  • Page 81: Repair Procedures

    Components CAUTION Make sure that the Faston connectors are disconnected from the compressor wire terminals and connected to the Inverter Analyzer before starting the power transistor check operation. If NOT, power transistor check operation may damage the compressor. INFORMATION Wait for 3 minutes for the power transistor check operation to start. 6 All LED’s on the Inverter Analyzer must lit.
  • Page 82 Components To perform a power check of the main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.10 Plate work" [  94]. 1 Turn ON the power of the unit. 2 Measure the voltage between pins 1‑2 of the connector S10 on the main PCB.
  • Page 83 Components a HAP LED INFORMATION Make sure the correct software is available on the PCB. If NOT, update using the updater tool. Does the HAP LED blink in regular Action intervals (1 second ON/1 second OFF)? Return to "3.8.1 Checking procedures" [  81] of the main PCB and continue with the next procedure.
  • Page 84 Components 1 Turn OFF the respective circuit breaker. 2 Check that all wires are properly connected and that all connectors are fully plugged‑in. 3 Check that no connectors or wires are damaged. 4 Check that the wiring corresponds with the wiring diagram, see "6.2 ...
  • Page 85 Components 2 Measure the voltage on the rectifier voltage check terminals (+ and –) on the main PCB. Result: The measured voltage MUST be approximately 324 V DC. a + terminal b – terminal INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter.
  • Page 86 Components a V DC out (+) b V AC in c V AC in d V DC out (–) INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.51~0.52 V 0.51~0.52 V 0.51~0.52 V...
  • Page 87 Components d a b c d DC+ e DC– INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.501 V 0.501 V 0.501 V DC– 0.501 V DC–...
  • Page 88 Components d DC+ e DC– INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.475 V 0.475 V 0.475 V DC– 0.475 V DC– DC– 0.475 V DC– DC–...

  • Page 89: Repair Procedures

    Components 3.8.2 Repair procedures To correct the wiring from the main power supply terminal to the main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 1 Remove the required plate work, see "3.10 Plate work" [  94].

  • Page 90: Outdoor Unit Fan Motor

    Components CAUTION ALWAYS apply new grease on the PCB heat sink. NOT doing so may cause the PCB to fail due to insufficient cooling. 2 Install the main PCB in the correct location on the PCB supports. a Screw b PCB support 3 Install and tighten the screws.
  • Page 91 Components 2 Check the state of the propeller fan blade assembly for damage, deformations and cracks. Is the propeller fan blade assembly Action damaged? Replace the propeller fan blade assembly, see "3.9.2 Repair procedures" [  92]. Perform a mechanical check of the DC fan motor assembly, see "3.9.1 Checking procedures" [...

  • Page 92: Repair Procedures

    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. 7 Check that the DC fan motor connector is properly connected to the PCB. 8 Unplug the DC fan motor connector and measure the resistance between the pins 1-3, 1-5, and 3-5 of the DC fan motor connector.
  • Page 93 Components a Nut b Propeller fan blade assembly 3 Pull and remove the propeller fan blade assembly from the DC fan motor assembly. INFORMATION Use a pulley remover if the propeller cannot be removed manually. 4 To install the propeller fan blade assembly, see "3.9.2 ...

  • Page 94: Plate Work

    Components To install the propeller fan blade assembly 1 Install the propeller fan blade assembly on the DC fan motor assembly. CAUTION Do NOT install a damaged propeller fan blade assembly. 2 Install and tighten the nut to fix the propeller fan blade assembly. a Nut b Propeller fan blade assembly Is the problem solved?
  • Page 95 Components 1× To remove the top plate INFORMATION This procedure is just an example and may differ on some details for your actual unit. Prerequisite: Stop the unit operation via the user interface. 1 Turn OFF the respective circuit breaker. 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.
  • Page 96 Components a Screw b Front plate 2 Remove the front plate. To remove the compressor sound insulation INFORMATION This procedure is just an example and may differ on some details for your actual unit. Prerequisite: Remove the front plate, see "3.10 Plate work" [  94].
  • Page 97 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 98 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 "3.10 Plate work" [  94].
  • Page 99 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 100: 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 3.10.2 Indoor unit To open the front panel 1 Hold the front panel by the panel tabs on both sides and open it. To close the front panel 1 Set the filters as they were.
  • Page 101 Components To remove the front panel 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. 1 Open the front panel, see "3.10 Plate work" [  94].
  • Page 102 Components 5 Place both hands under the centre of the front grille, push it up and then toward you. To remove the electrical wiring box cover TO OPEN THE SERVICE COVER 1 Remove 1 screw from the service cover. 2 Pull out the service cover horizontally away from the unit. a Service cover screw b Service cover NOTICE...
  • Page 103 Components To remove the switch box Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.10 Plate work" [  94]. 1 Disconnect the power supply wiring from the power supply terminal X1M. 2 Remove the screw and power supply wiring bracket.

  • Page 104: Reactor

    Components a Power supply terminal X1M b Power supply wiring bracket c Screw (ground wire) d Heat exchanger thermistor e Indoor unit main PCB f Switch box screw g Switch box 2 Route the connectors of the indoor unit fan motor and swing flap motor inside the switch box and connect them to the indoor unit main PCB.

  • Page 105: Repair Procedures

    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 Visually check the reactor for any damage or burnt‑out components. If any damage is found, replace the reactor, see "3.11.2 Repair procedures" [...

  • Page 106: Swing Flap Motor

    Components 2 Remove the Faston connectors to disconnect the wires from the reactor. 3 Remove the 2 screws that fix the reactor to the switch box. 4 Remove the reactor. a Reactor b Screw 5 To install the reactor, see "3.11.2 Repair procedures" [  105].

  • Page 107: Repair Procedures

    Components Prerequisite: Remove the required plate work, see "3.10 Plate work" [  94]. 1 Disconnect the swing flap motor connector from the indoor unit main PCB. 2 Measure the resistance between the following pins of the motor connector. Result: The measurements MUST be as shown in the table below. Pins Measured resistance (Ω) 232.5~267.5...

  • Page 108: Thermistors

    Components 2 Disconnect the connector from the swing flap motor. 3 Remove the screw from the swing flap motor. 4 Remove the swing flap motor from the swing flap. 5 To install the swing flap motor, see "3.12.2 Repair procedures" [  107]. To install the swing flap motor 1 Install the swing flap motor in the correct location on the swing flap.
  • Page 109 Components Is the thermistor correctly installed Action (thermal contact between the thermistor and the piping)? Perform an electrical check of the specific thermistor, see "Checking procedures" [  108]. Correctly install the thermistor, see "Repair procedures" [  112]. To perform an electrical check of the specific thermistor 1 First perform a mechanical check of the thermistor, see "Checking procedures" [...
  • Page 110 Components T °C kΩ T °C kΩ T °C kΩ T °C kΩ –19 186.53 38.08 10.21 3.32 –18 175.97 36.30 9.81 3.21 –17 166.07 34.62 9.42 3.11 –16 156.80 33.02 9.06 3.01 –15 148.10 31.50 8.71 2.91 –14 139.94 30.06 8.37 2.82...
  • Page 111 Components 6 Measure the resistance between the appropriate pins of the thermistor connector. 7 Check that the measured resistance value matches the resistance determined through the measured temperature (earlier step in the procedure). ▪ E.g. R1T thermistor: ▪ Measured temperature with contact thermometer: 23.1°C, ▪...
  • Page 112 Components 8 Disconnect the thermistor from the intermediate connector and measure the resistance of the thermistor (between the appropriate pins of the connector). Does the measured resistance of the Action thermistor match with the temperature determined resistance? Correct the wiring between the thermistor connector on the PCB and the intermediate connector, see "6.2 Wiring...
  • Page 113 Components a Tie strap b Insulation c Thermistor wire d Clip e Thermistor f Thermistor holder 3 Cut all tie straps that fix the thermistor harness. 4 Disconnect the thermistor connector from the appropriate PCB and remove the thermistor. INFORMATION Some of the thermistors are wired to the same connector.
  • Page 114 Components To install the thermistor Indoor unit air (room) thermistor As the indoor unit air (room) thermistor is located on the display PCB, install the display PCB as described in the steps below: 1 Install the display PCB in the correct location on the unit. 2 Connect the connector to the display PCB.

  • Page 115: Other Thermistors

    Components 2 Route the thermistor harness towards the appropriate PCB. 3 Connect the thermistor connector to the appropriate PCB. INFORMATION Some of the thermistors are wired to the same connector. See connector and pin information of the thermistors at the start of the electrical check procedure and "6.2 Wiring diagram" [  133].
  • Page 116 Components T °C kΩ T °C kΩ T °C kΩ T °C kΩ –19 186.53 38.08 10.21 3.32 –18 175.97 36.30 9.81 3.21 –17 166.07 34.62 9.42 3.11 –16 156.80 33.02 9.06 3.01 –15 148.10 31.50 8.71 2.91 –14 139.94 30.06 8.37 2.82...
  • Page 117 Components INFORMATION All thermistors have a resistance tolerance of 3%. Does the measured resistance of the Action thermistor match with the temperature determined resistance? Thermistor is OK. Return to the troubleshooting of the specific error and continue with the next procedure. Replace the specific PCB, see "3 Components" [  44].

  • Page 118: Third Party Components

    Third party components 4 Third party components 4.1 Electrical circuit 4.1.1 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 "3.10 Plate work" [  94].

  • Page 119: Repair Procedures

    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 "4.1.2 Repair procedures" [  119]. Adjust the power supply to the unit, see "4.1.2 Repair procedures" [  119]. To check the wiring between the outdoor unit and the indoor unit 1 Check that all wires are properly connected and that all connectors are fully plugged‑in.

  • Page 120: Refrigerant Circuit

    Third party components INFORMATION If applicable, also check the electrical components between the main power supply terminal and the indoor unit power supply terminal (e.g. intermediate terminal, noise filter, fuse, …). Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
  • Page 121 Third party components To check if the refrigerant circuit is clogged Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 1 Wait for the refrigerant to reach the outdoor temperature. 2 Check that all field piping is done according to the refrigeration practice and installer reference guide: ▪...
  • Page 122 Third party components 2 The superheated degree of suction gas lowers (or the wet operation is performed). Consequently, the compressor consumes more power and is noisy (before over‑current relay trips). 3 The subcooling degree of refrigerant in liquid form rises (values >4~5K are NOT normal).
  • Page 123 Third party components Cooling The opening degree of the electronic Fan control, i.e., expansion valve comes larger. actually hunting to Electronic expansion valve maintain high pressure fully opens. on the cooling control with low outdoor air. Operating frequency comes to the lowest level. High pressure High pressure decreases...

  • Page 124: Repair Procedures

    Third party components 3 Measure the pressure of the refrigerant. The measured pressure converted into saturated temperature MUST be in line with the expected pressure / saturated temperature at current ambient temperature. 4 If the measured pressure is significantly higher (>5K), non‑condensables gasses are most likely present in the refrigerant.
  • Page 125 Third party components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 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" [...
  • Page 126 Third party components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. To add refrigerant 1 See the installer reference guide for the correct procedure. Is the problem solved? Action No further actions required.

  • Page 127: External Factors

    Third party components CAUTION Some outdoor units are equipped with a low pressure switch to protect the compressor by switching it off. NEVER short‑circuit the low pressure switch during pump down operation. 1 Remove the refrigerant connection cover, see "3.10 Plate work" [  94].
  • Page 128 Third party components Is the outdoor temperature within the Action operating range? Return to the troubleshooting of the specific error and continue with the next procedure. Wait for the outdoor temperature to return within the operating range. 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.

  • Page 129: 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 130: To Clean The Indoor Unit Heat Exchanger In Extreme Condition

    Maintenance 5.3 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 131 Maintenance 4 Soak in lukewarm water for about 10 to 15 minutes. INFORMATION ▪ If the dust does NOT come off easily, wash them with a neutral detergent diluted in lukewarm water. Dry the air filters in the shade. ▪ It is recommended to clean the air filters every 2 weeks.

  • Page 132: Technical Data

    Technical data 6 Technical data 6.1 Detailed information setting mode 6.1.1 Detailed information setting mode: Indoor unit See the installer reference guide on business portal for more information. 6.1.2 Detailed information setting mode: Outdoor unit See the installer reference guide on business portal for more information. 6.1.3 Detailed information setting mode: Remote controller See the installer reference guide on business portal for more information.

  • Page 133: Wiring Diagram

    Technical data 6.2 Wiring diagram 6.2.1 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 134 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 135 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 136 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. Field wiring PCB2 PCB1 GRN/YLW LED1...

  • Page 137: Wiring Diagram: Outdoor Unit

    Technical data 6.2.2 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 138 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 139 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 140 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. FIELD WIRING IPM1 K10R D402 C400...

  • Page 141: Piping Diagram

    Technical data 6.3 Piping diagram 6.3.1 Piping diagram: Indoor unit 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 142: Piping Diagram: Outdoor Unit

    Technical data 6.3.2 Piping diagram: Outdoor unit ARXQ25A + RXQ25A ·6.4· CuT ·9.5· CuT a Field piping (liquid: Ø6.4 mm flare connection) b Field piping (gas: Ø9.5 mm flare connection) c Stop valve (liquid) d Stop valve with service port (gas) e Muffler with filter f Heat exchanger g Accumulator h Muffler...
  • Page 143 Technical data ARXQ35A + RXQ35A ·6.4· CuT ·9.5· CuT a Field piping (liquid: Ø6.4 mm flare connection) b Field piping (gas: Ø9.5 mm flare connection) c Stop valve (liquid) d Stop valve with service port (gas) e Muffler with filter f Heat exchanger g Accumulator h Muffler M1C Compressor...

  • Page 144: Component Overview

    Technical data 6.4 Component overview 6.4.1 Component overview: Indoor unit a Heat exchanger b Fan motor c Heat exchanger thermistor R2T d Swing flap e Swing flap motor f Room thermistor R1T PCB g Switch box h Indoor unit main PCB RXQ25+35AMV1B + ARXQ25+35AMV1B + FTXQ25+35AMV1B + Service manual ATXQ25+35AMV1B...

  • Page 145: Component Overview: Outdoor Unit

    Technical data 6.4.2 Component overview: Outdoor unit a Heat exchanger i Main + inverter PCB A1P b Expansion valve Y1E j Reactor L1R c Muffler with filter k Accumulator d Heat exchanger thermistor R2T l Muffler e Stop valve with service port (gas) m Compressor M1C f Stop valve (liquid) n Fan...

  • Page 146: Field Information Report

    Technical data 6.5 Field information report See next page. RXQ25+35AMV1B + ARXQ25+35AMV1B + FTXQ25+35AMV1B + Service manual ATXQ25+35AMV1B Split Sensira R32 BBOP ESIE21-16 – 2022.02...
  • Page 147 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 148 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 149: Service Tools

    Technical data 6.6 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 150: Field Settings

    Technical data 6.7 Field settings 6.7.1 Field settings: Indoor unit To control the indoor unit fan during thermostat off in cooling INFORMATION As this field setting is NOT available on the standard remote controller of this unit, order one of the following remote controllers and perform as described below: ▪...

  • Page 151: Field Settings: Outdoor Unit

    Technical data 6.7.2 Field settings: Outdoor unit To set the facility settings INFORMATION These settings are only to be used for facilities such as equipment or computer rooms and never in a residence or office with people. 1 Cut the jumper J6 on the circuit board using nippers or a similar tool to expand the operation range of the outdoor unit down to –15°C.
  • Page 152 ESIE21-16 2022.02 Verantwortung für Energie und Umwelt...

This manual is also suitable for:

Sensira rxq35amv1bSensira arxq25amv1bSensira arxq35amv1bSensira ftxq25amv1bSensira ftxq35amv1bSensira atxq25amv1b ... Show all

Table of Contents