Page 1 Service manual Split New Perfera R32 RXM20~71R(9) ARXM25~71R(9) FTXM20~71R ATXM25~50R FVXM25~50A...
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 ESIE20-11 Document release January 2021 ESIE20-11A See below April 2021 The following updates have been applied to the Service Manual: • Outdoor unit models RXM-R9 and ARXM-R9 added. • Technical data – Field settings: To reduce maximum sound levels added. Version code Description Date...
Page 4: Table Of Contents
Table of Contents Table of Contents 1 Safety precautions Meaning of warnings and symbols..........................Dangers ................................... Warnings ..................................Cautions ..................................14 Notices .................................... 14 2 General operation 3 Troubleshooting To display the error code on the user interface ......................16 To reset the error code via remote controller .......................
Page 5 Table of Contents 4.1.1 Checking procedures ............................49 4.1.2 Repair procedures ............................53 Compressor ..................................57 4.2.1 Checking procedures ............................57 4.2.2 Repair procedures ............................63 Compressor thermal protector............................72 4.3.1 Checking procedures ............................72 4.3.2 Repair procedures ............................74 Damper motor ................................
Page 6 Table of Contents 6 Maintenance To clean the outdoor unit heat exchanger........................217 To clean the indoor unit heat exchanger ........................217 To clean the indoor unit heat exchanger in extreme condition ..................218 To clean the indoor unit and wireless remote control ....................218 To clean the front panel ..............................
Page 7: 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 8: 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 9 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 10 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 11 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 12 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 13 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 14: 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 15: General Operation
General operation 2 General operation The Split New Perfera 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 16: Troubleshooting
Troubleshooting 3 Troubleshooting 3.1 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 17: To Perform A Test Run Using The User Interface
Troubleshooting 3.4.1 To perform a test run using the user interface Floor standing units 1 Press to switch the system on. 2 Press the middle of simultaneously. 3 Press twice to choose and confirm selection by pressing Result: on the display indicates that the test run is selected. Test run operation will stop automatically after about 30 minutes.
Page 18: A5-00 - Outdoor Unit: High Pressure Peak Cut / Freeze Protection Problem
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 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...
Page 19: A6-00 - Indoor Unit Fan Motor Abnormality
Troubleshooting 3.5.3 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. detected while the output voltage to the fan is at its maximum.
Page 20: C4-00 - Heat Exchanger Temperature Sensor Problem
Troubleshooting 3.5.5 C4-00 – Heat exchanger temperature sensor problem Trigger Effect Reset Refrigerant liquid Unit will stop operating. Power reset. thermistor detects an open or short circuit during compressor operation. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the indoor unit heat exchanger thermistor.
Page 21: Humidity Sensor Abnormality
Troubleshooting 3.5.7 CC-00 – Humidity 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 humidity sensor.
Page 22: E3-00 - Outdoor Unit: Actuation Of High Pressure Switch
Troubleshooting 5 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. 6 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 23: E5-00 - Outdoor Unit: Overheat Of Inverter Compressor Motor
Troubleshooting 6 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [ 207]. Possible cause: Clogged refrigerant circuit. 7 Perform a check of the outdoor unit fan motor. See "4.13 Outdoor unit fan motor" [ 143]. 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.
Page 24: E6-00 - Outdoor Unit: Compressor Startup Defect
Troubleshooting 10 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [ 207]. Possible cause: Clogged refrigerant circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.11 E6-00 – Outdoor unit: Compressor startup defect Trigger Effect Reset...
Page 25: E7-00 - Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.12 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.
Page 26: Outdoor Unit: Cool/Heat Switchover Problem
Troubleshooting Possible cause: Faulty main PCB. 4 Check if the power supply is compliant with the regulations. See "5.1 Electrical circuit" [ 205]. Possible cause: ▪ Faulty or disturbance of the power supply (power supply MUST be within range of nominal operating voltage ±4%), ▪...
Page 27: F3-00 - Outdoor Unit: Malfunction Of Discharge Pipe Temperature
Troubleshooting 8 Check for the presence of non‑condensables and/or humidity in the refrigerant circuit. See "5.2 Refrigerant circuit" [ 207]. Possible cause: Non‑condensables and/or humidity in the refrigerant circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.
Page 28: F6-00 - Outdoor Unit: Abnormal High Pressure In Cooling
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.16 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.
Page 29: F8-00 - System Shutdown Due To Compressor Internal Temperature Abnormality
Troubleshooting 3.5.17 F8-00 – System shutdown due to compressor internal temperature abnormality Trigger Effect Reset Temperature discharge Unit will stop operating. Manual reset via user pipe thermistor exceeds interface. the determined limit. 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.
Page 30: H3-00 - Outdoor Unit: Malfunction Of High Pressure Switch
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. 3 Wait until the rectifier voltage is below 10 V DC.
Page 31: H6-00 - Outdoor Unit: Malfunction Of Position Detection Sensor
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 3.5.20 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.
Page 32: H8-00 - Outdoor Unit: Malfunction Of Compressor Input System
Troubleshooting 3.5.21 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 33: J3-00 - Outdoor Unit: Malfunction Of Discharge Pipe Thermistor
Troubleshooting 3.5.23 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 check discharge...
Page 34: L4-00 - Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
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 "4.12 Main PCB" [ 125]. Possible cause: Faulty main PCB. 2 Perform a check of the outdoor unit fan motor. See "4.13 ...
Page 35: L5-00 - Outdoor Unit: Inverter Instantaneous Overcurrent
Troubleshooting Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 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.
Page 36: P4-00 - Outdoor Unit: Malfunction Of Radiating Fin Temperature Sensor
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 37: U2-00 - Outdoor Unit: Defect Of Power Supply Voltage
Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform check refrigerant side thermistors. "4.19 Thermistors" [ 192]. Possible cause: Faulty refrigerant side thermistor(s). 2 Check that all stop valves of the refrigerant circuit are open. See "5.2 Refrigerant circuit" [ 207].
Page 38: U4-00 - Indoor/Outdoor Unit Communication 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. 2 Perform a check of the compressor. See "4.2 Compressor" [ 57]. Possible cause: Faulty compressor or miswiring of the compressor power supply cable.
Page 39: Indoor Unit, Outdoor Unit Mismatching Problem
Troubleshooting 2 Perform a check of the power supply, connections, wiring,… between the outdoor unit and the indoor unit. See "5.1 Electrical circuit" [ 205]. Possible cause: Faulty wiring between the outdoor unit and the indoor unit. 3 Perform a check of the main PCB. See "4.12 Main PCB" [ 125].
Page 40: Malfunction Of System
Troubleshooting 2 Perform a check of the power supply, connections, wiring,… between the outdoor unit and the indoor unit. See "5.1 Electrical circuit" [ 205]. Possible cause: Faulty wiring between the outdoor unit and the indoor unit. 3 Perform a check of the main PCB. See "4.12 Main PCB" [ 125].
Page 41: Symptom Based Troubleshooting
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 42: 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 "3.5 Error based may be an error code, activating the troubleshooting" [...
Page 43: 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 44: Abnormal High Pressure
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 45: Abnormal Low Pressure
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 46: 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. 3.6.7 Indoor fan starts operating but the compressor does not operate Check Detail Check the power supply.
Page 47: Operation Starts And The Unit Stops Immediately
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 48: Unit Discharges White Mist
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 49: Components
Components 4 Components CAUTION When replacing a component ALWAYS make sure the correct spare part for your unit is installed. 4.1 4-way valve 4.1.1 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 50 Components Is the measured value correct? Action Replace the 4‑way valve coil, see "4.1.2 Repair procedures" [ 53]. 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 51 Components 4 With the 4‑way valve connector connected to the PCB, measure the voltage on the 4‑way valve connection of the PCB. Result: The measured voltage MUST be: Class Voltage Class 20~35 12 V DC when operating in Heating mode 0 V DC when operating in Cooling mode Class 42~71 220~240 V AC when operating in...
Page 52 Components Refrigerant pressure correct? Action Replace the body of the 4‑way valve, "4.1.2 Repair procedures" [ 53]. Leaks may be found in the refrigerant circuit. Perform a pressure test of the refrigerant circuit, see "5.2.1 Checking procedures" [ 207]. 4 De-activate Heating and activate Cooling operation via the user interface. 5 Check with a contact thermometer (or by touching) if the flow through the 4- way valve corresponds with the flow shown in the flow diagram.
Page 53: Repair Procedures
Components 4.1.2 Repair procedures To remove the 4-way 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 "4.14 Plate work" [ 153]. Prerequisite: If needed, remove any parts to create more space for the removal of the 4‑way valve coil.
Page 54 Components 1 Remove the 4‑way valve coil from the 4‑way valve body, see "4.1.2 Repair procedures" [ 53]. 2 Remove and keep the putty (if installed) and the insulation (if installed) for re- use. 3 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa.
Page 55 Components 7 Install plugs or caps on the open pipe ends of the refrigerant piping to avoid dirt or impurities from entering the piping. 8 To install the 4‑way valve body, see "4.1.2 Repair procedures" [ 53]. To install the 4-way valve body 1 Remove the plugs or caps from the refrigerant piping and make sure they are clean.
Page 56 Components 6 After soldering is done, stop the nitrogen supply after the component has cooled‑down. 7 Install the putty (if available) and the insulation (if available) in their original location. 8 Install the 4‑way valve coil on the 4‑way valve body, see "4.1.2 ...
Page 57: Compressor
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. 5 Fix the 4‑way valve coil harness using new tie straps. Is the problem solved? Action No further actions required.
Page 58 Components A mechanical lock is present on the Action compressor? Perform an mechanical check of the compressor, see "4.2.1 Checking procedures" [ 57]. To perform a mechanical check of the compressor Prerequisite: First perform an auditive check of the compressor, see "4.2.1 Checking procedures" [ 57].
Page 59 Components Compressor dampers are in a good Action condition? Perform an electrical check of the compressor, see "4.2.1 Checking procedures" [ 57]. Replace the compressor and/or damaged dampers, see "4.2.2 Repair procedures" [ 63]. To perform an electrical check of the compressor 1 First perform a mechanical check of the compressor, see "4.2.1 ...
Page 60 Components 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 Before measuring the compressor motor windings resistance, measure the...
Page 61 Components U Wire terminal U V Wire terminal V W Wire terminal W 7 Install the compressor wire terminals cover. 8 Install the compressor insulation. 9 Turn ON the power using the respective circuit breaker. 10 Start the unit operation via the user interface. CAUTION NEVER operate the compressor with the compressor wire terminals cover removed.
Page 62 Components To perform an insulation check of the compressor Prerequisite: First perform an electrical check of the compressor, see "4.2.1 Checking procedures" [ 57]. Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 1 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.
Page 63: Repair Procedures
Components 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 Set the Megger voltage to 500 V DC or 1000 V DC. 5 Measure the insulation resistance between the following terminals.
Page 64 Components a String b Body jacket (outer) c Top insulation d Secondary (inner) body jacket 2 Open the body jacket. 3 Remove the top insulation from the compressor. 4 Open the secondary body jacket from the compressor. 5 Remove the body jackets from the compressor. 6 To install the compressor insulation, see "4.2.2 Repair procedures" [...
Page 65 Components Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see "5.2.2 Repair procedures" [ 212]. 1 If needed, remove any parts to create more space for the removal of the compressor. 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 66 Components U Wire terminal U V Wire terminal V W Wire terminal W 4 Remove the compressor thermal protector, see "To remove the compressor thermal protector" [ 74]. 5 Remove the putty from the compressor accumulator. Keep for reuse. 6 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa.
Page 67 Components A Class 42~71 unit a Compressor pipe 8 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 68 Components A Class 42~71 unit a Nut b Compressor c Damper 10 Remove the 3 dampers from the compressor. INFORMATION The compressor dampers may look different. 11 Remove the bushings and keep them for re-use. 12 Install plugs or caps on the open pipe ends of the refrigerant piping to avoid dirt or impurities from entering the piping.
Page 69 Components A Class 20~35 unit a Nut b Compressor c Damper A Class 42~71 unit a Nut b Compressor c Damper INFORMATION The compressor dampers may look different. 7 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa.
Page 70 Components A Class 20~35 unit a Compressor pipe A Class 42~71 unit a Compressor pipe 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.
Page 71 Components U Wire terminal U V Wire terminal V W Wire terminal W 13 Install the cover of the compressor wire terminals. A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32...
Page 72: Compressor Thermal Protector
Components a Compressor wire terminals cover 14 Install the compressor insulation, see "4.2.2 Repair procedures" [ 63]. 15 Perform a pressure test, see "5.2.1 Checking procedures" [ 207]. 16 Add refrigerant refrigerant circuit, "5.2.2 Repair procedures" [ 212]. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 73 Components A Class 42~71 unit a Compressor wire terminals cover 2 Remove the compressor thermal protection with bracket from the compressor. 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.
Page 74: Repair Procedures
Components 7 Let the compressor thermal protection cool down below 85°C (reset temperature is 85~105°C). 8 Again measure the resistance on the compressor thermal protector. Result: The contact MUST be closed (measured resistance = 0 Ω). Does the compressor thermal protector Action contact open and close at the correct temperature?
Page 75 Components A Class 42~71 unit a Compressor wire terminals cover 2 Remove the compressor thermal protector with bracket from the compressor housing. a Compressor thermal protector b Faston connector c Bracket 3 Disconnect the Faston connectors from the compressor thermal protector. 4 Separate the compressor thermal protector and the compressor thermal protector bracket.
Page 76 Components 5 To install compressor thermal protector, "4.2.2 Repair procedures" [ 63]. 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. a Compressor thermal protector b Faston connector c Bracket...
Page 77: Damper Motor
Components A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit 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.
Page 78 Components 1 Disconnect the damper motor connector S400 from the indoor unit main PCB. 2 Measure the resistance between the following pins of the damper motor connector. Result: The measurements MUST be as shown in the table below. Pins Measured resistance (Ω) 139.5~160.5 1-13 1-14...
Page 79: Repair Procedures
Components Damper motor resistance Action measurements are correct? Replace the damper motor, see "4.4.2 Repair procedures" [ 79]. 4.4.2 Repair procedures To remove the damper motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 80 Components a Screw (drain hose) b Drain hose c Screw (damper motor cover) d Damper motor cover e Screw (damper motor) f Damper motor g Damper motor wiring harness 3 Install the damper motor cover in the correct location on the indoor unit. Make sure that the damper motor shaft is correctly inserted in the gear.
Page 81: Expansion Valve
Components 3 Disconnect the damper motor wiring harness from the indoor unit main PCB. 4 To install the damper motor wiring harness, see "4.4.2 Repair procedures" [ 79]. To install the damper motor wiring harness 1 Connect the damper motor wiring harness to the indoor unit main 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 82 Components To perform a mechanical check of the expansion valve Prerequisite: Power OFF the unit for 3 minutes. Then turn ON the unit and listen to the expansion valve assembly. If the expansion valve does NOT make a latching sound, continue with the electrical check of the expansion valve, see "4.5.1 Checking procedures" [ 81].
Page 83 Components INFORMATION Below are shown examples of the resistance measurements in which the common wire is connected to pin 5 or to pin 6 of the expansion valve coil connector. Connections may differ according to the type of expansion valve. ▪...
Page 84 Components To perform an operation check of the expansion valve Prerequisite: First perform an electrical check of the expansion valve, see "4.5.1 Checking procedures" [ 81]. 1 Turn ON the power of the unit. INFORMATION When power is switched ON, PCB checks all expansion valve coil windings by current check.
Page 85: Repair Procedures
Components Is the flow through the expansion valve Action correct? Component is OK. Return to the troubleshooting of the specific error and continue with the next step. Replace the expansion valve, see "4.5.2 Repair procedures" [ 85]. Problem solved? After all checking procedures listed above have been performed: Is the problem solved? Action No further actions required.
Page 86 Components A Class 42~71 unit a Expansion valve coil b Expansion valve coil harness 3 Cut all tie straps that fix the expansion valve coil harness. 4 Disconnect the expansion valve coil connector S20 from the main PCB. 5 Remove the expansion valve coil (and harness) from the unit. 6 To install the expansion valve coil, see "4.5.2 Repair procedures" [...
Page 87 Components A Class 42~71 unit 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 88 Components 7 After soldering is done, stop the nitrogen supply after the component has cooled‑down. A Class 20~35 unit a Putty b Expansion valve pipe c Expansion valve body A Class 42~71 unit a Putty b Expansion valve pipe c Expansion valve body 8 Reinstall the putty.
Page 89: High Pressure Switch
Components a Expansion valve coil b Pipe retention clip c Pipe 2 Route the expansion valve coil harness towards the appropriate PCB. 3 Connect the expansion valve coil 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 pins of the PCB.
Page 90 Components a High pressure switch protection control b Pressure c High pressure switch closed d High pressure switch open e High pressure switch operating pressure f High pressure switch reset pressure High pressure switch Operating pressure (MPa) Reset pressure (MPa) S1PH 4.03~4.15 3.05~3.35...
Page 91: Repair Procedures
Components High pressure switch connector Then measurements are correct? High pressure switch is OK. Return to the troubleshooting of the specific error and continue with the next procedure. Replace the high pressure switch, see "4.6.2 Repair procedures" [ 91]. 4.6.2 Repair procedures To remove the high pressure switch Prerequisite: Stop the unit operation via the user interface.
Page 92 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. 8 Install a plug or cap on the refrigerant piping to avoid dirt or impurities from entering the piping.
Page 93: Humidity Sensor
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 4.7 Humidity sensor 4.7.1 Checking procedures To perform a power check of the humidity sensor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 94: Repair Procedures
Components Is the output voltage on the indoor unit Action main PCB correct? Perform a check of the indoor unit main PCB, see "4.9.1 Checking procedures" [ 106]. 5 As there are no further check procedures for this component, perform a check of the indoor unit main PCB to check if the humidity sensor needs to be replaced.
Page 95 Components a Humidity sensor PCB assembly b Tie strap (thermistor fixation) 2 Install the thermistor on the correct location and fix it to the bracket using a new tie strap. 3 Connect the harness to the humicity sensor PCB assembly. Is the problem solved? Action No further actions required.
Page 96: Indoor Unit Fan Motor
Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 4.8 Indoor unit fan motor 4.8.1 Wall mounted indoor units Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the DC fan motor assembly Prerequisite: Stop the unit operation via the user interface.
Page 97 Components DC fan motor measurements are Action correct? Replace the DC fan motor, see "Repair procedures" [ 97]. Repair procedures To remove the DC fan motor assembly Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 98 Components 4 Remove the indoor unit fan motor from the indoor unit. 5 To install the indoor unit fan motor, see "Repair procedures" [ 97]. 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.
Page 99: Floor Standing Indoor Units
Components 4.8.2 Floor standing indoor units Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the turbo fan assembly Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 100 Components Is the DC fan motor shaft friction Action normal? Perform an electrical check of the DC fan motor assembly, see "Checking procedures" [ 99]. Replace the DC fan motor assembly, see "Repair procedures" [ 100]. To perform an electrical check of the DC fan motor assembly 1 First perform a mechanical check of the DC fan motor assembly, see "Checking procedures" [...
Page 101 Components Prerequisite: Turn OFF the respective circuit breaker. 1 Remove the required plate work, see "4.14 Plate work" [ 153]. 2 Remove the switch box, see "4.14 Plate work" [ 153]. 3 Remove the 2 screws and remove the upper air outlet assembly. a Screw (upper air outlet assy) b Upper air outlet assy c Drain hose d Damper motor wiring harness...
Page 102 Components 9 Release the 2 hooks and remove the piping fixture. 10 Release the flared joint of the (refrigerant) liquid pipe and the gas pipe. Disconnect the liquid and gas pipes from the refrigerant field piping. Plug the refrigerant field pipes to prevent dirt from entering the pipes. 11 Remove the screw and disconnect the ground wire from the indoor unit heat exchanger.
Page 103 Components 17 To install the turbo fan assembly, see "Repair procedures" [ 100]. To remove the DC fan motor assembly 1 Remove the turbo fan assembly from the DC fan motor assembly, see "Repair procedures" [ 100]. 2 Cut the tie strap and unlock the ferrite core. a Ferrite core b DC fan motor wiring harness c Hook...
Page 104 Components a Ferrite core b DC fan motor wiring harness c Hook d Screw (fan motor cover) e Fan motor cover f Wiring harness retainer 4 Route the DC fan motor wiring harness through the hooks and install the harness retainer. Make sure the wiring harness is also routed through the hooks located behind the harness retainer.
Page 105 Components 3 Install the bellmouth in the correct location on the indoor unit. Install and tighten the 4 screws to fix the bellmouth. 4 Slowly rotate the turbo fan and check that it does NOT touch the bellmouth. Repair as needed. 5 Install the indoor unit heat exchanger on the 2 hooks on the right side.
Page 106: Indoor Unit Main Pcb
Components 12 Install the lower air outlet assembly in the correct location. Install and tighten the 2 screws. a Screw (upper air outlet assy) b Upper air outlet assy c Drain hose d Damper motor wiring harness e Screw (tie strap) f Screw (lower air outlet assy) g Lower air outlet assy 13 Route the damper motor wiring harness through the appropriate harness...
Page 107 Components To perform a power check 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 "4.14 Plate work" [ 153]. 1 Turn ON the power of the unit. 2 Measure the voltage between the pins 1‑4 of the connector S300A on the indoor unit main PCB.
Page 108 Components Is the measured voltage on the indoor Action unit main PCB correct? Continue with the next step. 3 Measure the output voltage between the pins 1‑4 of the connector S102 on the indoor unit power PCB. Result: The measured voltage MUST be 324 V DC. Output voltage on indoor unit power Action PCB correct?
Page 109 Components Does the HAP LED blink in regular Action intervals (1 second ON/1 second OFF)? Return to "4.9.1 Checking procedures" [ 106] of the indoor unit main PCB and continue with the next procedure. Replace the indoor unit main PCB, see "4.9.2 Repair procedures" [ 110]. To check if the correct spare part is installed Prerequisite: First perform all earlier checks of the indoor unit main PCB, see "4.9.1 Checking...
Page 110: Repair Procedures
Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 4.9.2 Repair procedures To remove the indoor unit main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 111 Components 4 To install the indoor unit main PCB, see "4.9.2 Repair procedures" [ 110]. To install the indoor unit main PCB 1 Install the indoor unit main PCB in the correct location in the switch box. Make sure the PCB is correctly fixed by the PCB retainers. A Wall mounted indoor unit a Indoor unit main PCB A Floor standing indoor unit...
Page 112: Indoor Unit Power Pcb
Components Is the problem solved? Action No further actions required. Return to "4.9.1 Checking procedures" [ 106] of the indoor unit main PCB and continue with the next procedure. 4.10 Indoor unit power PCB 4.10.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a power check of the indoor unit power PCB Prerequisite: Stop the unit operation via the user interface.
Page 113 Components A Floor standing indoor unit a Black wire b White wire Is the measured voltage on the indoor Action unit power PCB correct? Return to "4.10.1 Checking procedures" [ 112] of the indoor unit power PCB and continue with the next procedure.
Page 114 Components A Wall mounted indoor unit a Connector S102 A Floor standing indoor unit a Connector S102 Is the measured voltage on the indoor Action unit power PCB correct? Return to "4.10.1 Checking procedures" [ 112] of the indoor unit power PCB and continue with the next procedure.
Page 115 Components Is the correct spare part for the indoor Action unit power PCB installed? Return to "4.10.1 Checking procedures" [ 112] of the indoor unit power PCB and continue with the next procedure. Replace the indoor unit power PCB, see "4.10.2 Repair procedures" [ 117].
Page 116 Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U Blown fuse on the indoor unit power Action PCB? Replace the blown fuse, see "4.10.2 Repair procedures" [ 117]. Return to "4.9.1 Checking procedures" [ 106] of the indoor unit power PCB and continue with the next procedure.
Page 117: Repair Procedures
Components 4.10.2 Repair procedures To correct the wiring from the indoor unit power supply terminal to the indoor unit power PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153].
Page 118 Components A Floor standing indoor unit a Indoor unit power PCB 3 Remove the indoor unit power PCB from the indoor unit. 4 To install the indoor unit power PCB, see "4.10.2 Repair procedures" [ 117]. To install the indoor unit power PCB 1 Install the indoor unit power PCB in the correct location in the switch box.
Page 119 Components A Floor standing indoor unit a Indoor unit power PCB 2 Connect all connectors to the indoor unit power PCB. INFORMATION Use the wiring diagram and connection diagram for correct installation of the connectors, see "7.2 Wiring diagram" [ 226]. 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.
Page 120 Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U 2 To install a fuse on the indoor unit power PCB, see "4.10.2 Repair procedures" [ 117]. To install a fuse on the indoor unit power PCB 1 Install the fuse on the correct location on the PCB.
Page 121: Intelligent Eye Sensor
Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U Is the problem solved? Action No further actions required. Return to "4.9.1 Checking procedures" [ 106] of the indoor unit power PCB and continue with the next procedure.
Page 122 Components To perform a power check of the intelligent eye sensor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 1 Remove the required plate work, see "4.14 Plate work" [ 153]. 2 Turn ON the power of the unit. 3 Remove the control panel from the indoor unit.
Page 123 Components 2 Wave your hand in front of the left side (when facing the indoor unit) of the intelligent eye sensor and measure the voltage between the following pins of the intelligent eye sensor connector S602. Result: The measured voltage MUST be: Connector pins Voltage 2‑3...
Page 124: Repair Procedures
Components 4.11.2 Repair procedures To remove the intelligent eye sensor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153]. 1 Remove the control panel from the indoor unit. a Control panel b Intelligent eye sensor PCB 2 Disconnect the connector from the intelligent eye sensor PCB.
Page 125: Main Pcb
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. To remove the intelligent eye sensor wiring harness Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 126 Components Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153]. 1 Turn ON the power of the unit. 2 Measure the voltage between the black and white wires. Result: The measured voltage MUST be 230 V AC. a Black wire b White wire Is the measured voltage on the PCB Action correct?
Page 127 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 "Checking procedures" [ 125] of the main PCB and continue with the next procedure.
Page 128 Components Is the problem solved? Action Return to "Checking procedures" [ 125] of the PCB and continue with the next procedure. To check the fuse of the main PCB Prerequisite: First perform all earlier main PCB checks, see "Checking procedures" [ 125]. 1 Measure the continuity of the fuse.
Page 129 Components 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. Is the measured rectifier voltage Action correct? Perform a check of the power modules, "Checking procedures" [...
Page 130 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 131 Components c b a 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– DC–...
Page 132 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 133 Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. Repair procedures To remove 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 "4.14 Plate work" [...
Page 134 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 in the switch box. a Power supply wires from X1M b Wire from X1M c Ground wiring d Connector X11A...
Page 135: Class 42~71 Units
Components 4.12.2 Class 42~71 units Checking procedures INFORMATION It is recommended to perform the checks in the listed order. 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 "4.14 Plate work" [...
Page 136 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 "Checking procedures" [ 135] of the main PCB and continue with the next procedure.
Page 137 Components 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 "7.2 Wiring diagram" [ 226]. INFORMATION Correct the wiring as needed.
Page 138 Components 2 Measure the voltage on the rectifier voltage check terminals (+ and –) on the main PCB. Result: The measured voltage MUST be approximately 300~350 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 139 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 140 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. 0.501 V 0.501 V 0.501 V DC– 0.501 V DC– DC– 0.501 V DC– DC–...
Page 141 Components Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153]. 1 Disconnect the power supply wires from the main power supply terminal X1M. 2 Remove the ferrite core (for power supply wires) from the switch box (unplug fixation plug).
Page 142 Components 2 Install the main PCB in the correct location in the switch box. a Power supply wires from X1M b Ferrite core (power supply wires) c Tie strap (power supply wires) d Screw (ground wiring) e Ferrite core (ground wiring) f Connector X12A g Compressor connector h Tie strap (compressor harness)
Page 143: Outdoor Unit Fan Motor
Components 4.13 Outdoor unit fan motor 4.13.1 Class 20~35 units Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the propeller fan blade assembly Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 144 Components INFORMATION Check the DC fan motor power supply (voltage) circuit on the PCB. 2 Turn ON the power of the unit. 3 Activate Cooling or Heating operation via the user interface. 4 Check the functioning of the outdoor unit fan. Outdoor unit fan …...
Page 145 Components Are the measured resistance values Action correct? Perform a check of the main PCB, see "Checking procedures" [ 125]. Replace the DC fan motor, see "Repair procedures" [ 145]. Problem solved? After all checking procedures listed above have been performed: Is the problem solved? Action No further actions required.
Page 146 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 Disconnect the DC fan motor connector from the main PCB. a DC fan motor connector b DC fan motor harness c Switch box...
Page 147: Class 42~71 Units
Components 4 Route the DC fan motor harness upwards and attach the DC fan motor harness to the switch box. 5 Connect the DC fan motor connector to the connector on the main PCB. 6 Install the propeller fan blade assembly, see "Repair procedures" [ 145].
Page 148 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 "Repair procedures" [ 150]. Perform a mechanical check of the DC fan motor assembly, see "Checking procedures" [...
Page 149 Components 5 Confirm via the service monitoring tool that the DC fan motor assembly receives an ON signal. 6 Turn OFF the unit via the user interface. 7 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 150 Components Is the measured voltage 0 V DC? Action Perform a check of the main PCB, see "Checking procedures" [ 135]. Continue with the next step. 13 Connect the DC fan motor connector to the PCB. Remove the plastic insert from the connector for easier measurement. CAUTION Ensure that the system CANNOT start the fan.
Page 151 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 "Repair procedures" [ 150].
Page 152 Components 4 Detach the DC fan motor harness from the switch box. 5 Slightly bend the harness retainers (at the back of the fan motor bracket) to detach the DC fan motor harness. 6 Remove the 4 screws that fix the DC fan motor assembly. 7 Remove the DC fan motor assembly from the unit.
Page 153: Plate Work
Components a Nut b Propeller fan blade assembly Is the problem solved? Action No further actions required. Return to "Checking procedures" [ 147] of the outdoor unit fan motor and continue with the next procedure. 4.14 Plate work 4.14.1 Outdoor unit To remove the refrigerant connection cover DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING...
Page 154 Components 3× 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 155 Components a Screw b Front plate 2 Remove the front plate. To remove the switch box 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. Prerequisite: Turn OFF the respective circuit breaker.
Page 156 Components 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. 5 Remove the wire clamp. 6 Remove the screws that fix the right side plate assembly. 7 Cut the cable tie.
Page 157 Components a Cable tie b Switch box 8 Lift and remove the switch box from the outdoor unit. 9 To install the switch box, see "4.14 Plate work" [ 153]. To install the switch box INFORMATION This procedure is just an example and may differ on some details for your actual unit. 1 Install the switch box on the correct location in the outdoor unit.
Page 158 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 159: 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 4.14.2 Indoor unit To open the front panel ATXM-R and FTXM-R units 1 Hold the front panel by the panel tabs on both sides and open it. Floor standing units 1 Slide both sliders in the direction of the arrows until they click.
Page 160 Components 2 Open the front panel. To close the front panel ATXM-R and FTXM-R units 1 Set the filters as they were. 2 Gently press the front panel at both sides and at the center until it clicks. Floor standing units 1 Close the front panel and slide both sliders until they click.
Page 161 Components Floor standing units 1 Open the front panel, see "4.14 Plate work" [ 153]. 2 Remove the string. 3 Remove the front panel. To remove the front grille ATXM-R and FTXM-R units CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system.
Page 162 Components Floor standing units 1 Remove the front panel. See "4.14 Plate work" [ 153]. 2 Remove the 4 screws, remove the grille from 4 tabs on the top and remove the front grille while pulling it toward you. 4× a Front grille b Tabs To remove the electrical wiring box cover ATXM-R and FTXM-R units...
Page 163 Components 2 Open the electrical wiring box cover by pulling the protruding part on the top of the cover. 3 Unhook the tab(s) on the bottom and remove the electrical wiring box cover. a Screw b Protruding part on the top of the cover c Tab Floor standing units TO OPEN THE TERMINAL BLOCK...
Page 164 Components a Screw b Wiring box cover c Tabs To remove the switch box ATXM-R and FTXM-R units Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153].
Page 165 Components A Class 50~71 unit 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, the swing flap motor, the swing raster motor and the streamer unit from the indoor unit main PCB.
Page 166 Components d Plate e Indoor unit main PCB f Switch box screw g Switch box 3 Remove the screw to disconnect the grounding wire from the back side of the switch box. 4 Remove the screw and remove the plate from the indoor unit heat exchanger to create access to the heat exchanger thermistor.
Page 167 Components To re-install the front panel ATXM-R and FTXM-R units 1 Attach the front panel. Align the shafts with the slots and push them all the way in. 2 Close the front panel, see "4.14 Plate work" [ 153]. Floor standing units 1 Insert the front panel into the grooves of the unit (3 places) and attach the string.
Page 168 Components A Class 50~71 unit 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 2 Route the connectors of the indoor unit fan motor, swing flap motor, swing raster motor and streamer unit inside the switch box and connect them to the indoor unit main PCB.
Page 169: Reactor
Components e Indoor unit main PCB f Switch box screw g Switch box 2 Route the connectors of the indoor unit fan motor, swing flap motor, damper motor, streamer unit and thermistors (air + heat exchanger) inside the switch box and connect them to the indoor unit main PCB. 3 Install and tighten the two screws to secure the switch box.
Page 170 Components 2 Remove the main PCB, see "Repair procedures" [ 133]. The reactor measuring points are ONLY reachable on the back side of the main PCB. 3 Measure the resistance of the reactor using a low ohm multi meter. Result: The resistance MUST be as follows: Measuring points Resistance...
Page 171 Components Is the inductance measurement Action correct? Replace the reactor, see "4.15.2 Repair procedures" [ 172]. Class 42~71 units 1 Check that the reactors are firmly installed on the main PCB. a Reactor L803 b Reactor L804 2 Remove the main PCB, see "Repair procedures" ...
Page 172: Repair Procedures
Components Is the resistance measurement correct? Action Replace the reactor, see "4.15.2 Repair procedures" [ 172]. 4 Measure the inductance of the reactor using an LCR meter. Result: The inductance MUST be as follows: Measuring points Resistance c‑d 88.5~101.5 µH a L803 b L804 c Measuring point d Measuring point Is the inductance measurement...
Page 173: Repair Procedures
Components After complete check of the indoor unit Action main PCB, is the problem solved? Replace the streamer unit, see "4.16.2 Repair procedures" [ 173]. 4.16.2 Repair procedures To remove the streamer unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 174 Components To install the streamer unit 1 Install the streamer unit in the correct location on the indoor unit. A Wall mounted indoor unit a Streamer unit connector b Streamer unit A Floor standing indoor unit a Streamer unit connector b Streamer unit 2 Connect the streamer unit harness to the streamer unit.
Page 175: Swing Flap Motor
Components 4.17 Swing flap motor 4.17.1 Wall mounted indoor units - Class 20~42 Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 176 Components a Swing flap b Screw (swing flap motor fixation) c Swing flap motor d Coupling piece 5 Remove the swing flap motor from the coupling piece. 6 To install the swing flap motor, see "Repair procedures" [ 175]. To install the swing flap motor 1 Install the coupling piece on the swing flap motor.
Page 177: Wall Mounted Indoor Units - Class 50~71
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 4.17.2 Wall mounted indoor units - Class 50~71 Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 178 Components Pins Measured resistance (Ω) 706.8~813.2 Swing flap motor resistance Action measurements are correct? Replace the swing flap motor wiring harness, see "Repair procedures" [ 178]. Replace the swing flap motor, see "Repair procedures" [ 178]. Repair procedures To remove the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 179 Components To install the swing flap motor 1 Connect the wiring harness to the swing flap motor. 2 Install the swing flap motor on the correct location on the indoor unit. Make sure the swing flap motor shaft is correctly inserted in the link. a Main swing flap b Secondary swing flap c Screw (swing flap motor fixation)
Page 180 Components a Screw (drain hose) b Drain hose c Swing raster motor cover 4 Remove the swing raster motor cover. 5 Disconnect the wiring harness from the swing raster motor. 6 Remove the swing flap motor wiring harness. 7 To install the swing flap motor wiring harness, see "4.20.2 ...
Page 181: Floor Standing Indoor Units
Components 4.17.3 Floor standing indoor units Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153].
Page 182 Components Pins Measured resistance (Ω) 706.8~813.2 Swing flap motor resistance Action measurements are correct? Replace the swing flap motor wiring harness, see "Repair procedures" [ 182]. Replace the swing flap motor, see "Repair procedures" [ 182]. Repair procedures To remove the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 183 Components To install the swing flap motor 1 Install the coupling piece on the swing flap motor. Install the spring to fix the coupling piece. 2 Connect the wiring harness to the swing flap motor. 3 Install the swing flap motor in the correct location on the indoor unit. a Swing flap b Screw (swing flap motor fixation) c Swing flap motor...
Page 184: Swing Raster Motor
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 4.18 Swing raster motor 4.18.1 Checking procedures To perform an electrical check of the swing raster motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 185: Repair Procedures
Components Pins Measured resistance (Ω) 353.4~406.6 706.8~813.2 Swing raster motor resistance Action measurements are correct? Replace the swing raster motor wiring harness, see "4.18.2 Repair procedures" [ 185]. Replace the swing raster motor, see "4.18.2 Repair procedures" [ 185]. 4.18.2 Repair procedures To remove the swing raster motor Class 20~42 indoor unit Prerequisite: Stop the unit operation via the user interface.
Page 186 Components a Screw (drain hose) b Drain hose 4 Remove the 2 screws that fix the swing raster motor assembly to the indoor unit. a Screw (swing raster motor assembly) b Swing raster motor assembly c Fan guard d Swing raster motor rod 5 Remove the fan guard.
Page 187 Components Class 50~71 indoor unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153]. 1 Remove the switch box, see "4.14 Plate work" [ 153]. 2 Put a small drain pan (or container) under the drain hose.
Page 188 Components a Screw (swing raster motor fixation) b Swing raster motor c Gear 9 Remove the swing raster motor from the gear. 10 Disconnect the wiring harness from the swing raster motor. 11 To install the swing raster motor, see "4.18.2 Repair procedures" [ 185].
Page 189 Components 7 Install the 2 screws to fix the swing raster motor assembly. Do NOT yet tighten the screws. a Screw (swing raster motor assembly) b Swing raster motor assembly c Fan guard d Swing raster motor rod 8 Connect the swing raster motor rod to the swing raster shaft using soft tools. 9 Tighten the 2 screws to properly fix the swing raster motor assembly.
Page 190 Components Class 50~71 indoor unit 1 Connect the wiring harness to the swing raster motor. 2 Install the gear on the swing raster motor shaft. 3 Install the swing raster motor (and gear) on the correct location on the bracket. a Screw (swing raster motor fixation) b Swing raster motor c Gear...
Page 191 Components 10 Install the fan guard. 11 Install the swing raster motor cover. 12 Connect the drain hose to the indoor unit. a Screw (drain hose) b Drain hose 13 Install the drain hose fixation bracket. Install and tighten the screw. 14 Install the switch box, see "4.14 Plate work" [...
Page 192: Thermistors
Components 4.19 Thermistors 4.19.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the specific thermistor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [...
Page 193 Components Wall mounted indoor units Name Symbol Location Connector Inter- Referen (PCB) (pins) mediate connector (table) (pins) Indoor unit Display PCB S800:5‑11 S27:1‑2 on air (room) A3P on display PCB thermistor main PCB (I/ Heat Main (I/U) S501:1‑2 exchanger thermistor Floor standing indoor units Name Symbol...
Page 194 Components T °C kΩ T °C kΩ T °C kΩ T °C kΩ –9 106.03 23.91 6.91 –8 100.41 22.85 6.65 –7 95.14 21.85 6.41 –6 90.17 20.90 6.65 –5 85.49 20.00 6.41 –4 81.08 19.14 6.18 –3 76.93 18.32 5.95 –2 73.01...
Page 195 Components ▪ E.g. R1T thermistor: ▪ Measured temperature with contact thermometer: 23.1°C, ▪ Resistance value determined through temperature (using the thermistor table A): Resistance at 23°C: 21.85 kΩ, Resistance at 24°C: 20.90 kΩ, ▪ Disconnect connector and measure resistance between S90 pin 1‑2: Measured resistance: 21.86 kΩ, ▪...
Page 196: Repair Procedures
Components 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 "7.2 Wiring diagram" [ 226]. Replace the specific thermistor, see "4.19.2 Repair procedures" [ 196].
Page 197 Components Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "4.14 Plate work" [ 153]. 1 Locate the thermistor that needs to be removed. 2 Remove the thermistor from the thermistor holder as follows: ▪ For outdoor unit air (ambient) thermistor: Open the thermistor holder and remove the thermistor from the holder.
Page 198 Components 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 "7.2 Wiring diagram" [ 226]. ALWAYS replace the complete set of thermistors wired to the same connector.
Page 199 Components ▪ For refrigerant piping thermistors: Pull the clip and install the thermistor in the specific thermistor holder. Make sure the clip is in the correct position (blocking the thermistor). a Clip b Thermistor c Thermistor holder d Insulation e Thermistor wire f Tie strap 2 Route the thermistor harness towards the appropriate PCB.
Page 200: Wifi Control Pcb
Components ▪ Install all other thermistors wired to the connector in their thermistor holder, ▪ Route the thermistor harness of all thermistors towards the appropriate PCB or intermediate connector, ▪ Connect the thermistor connector. 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.
Page 201: Repair Procedures
Components A Floor standing indoor unit a Wifi control PCB assembly Is the measured power supply voltage Action correct? Skip the next step.. Continue with the next step. 4 Measure the output voltage between between the pins 4‑5 on the connector S801 on the indoor unit main PCB.
Page 202 Components 2 Carefully click the complete wifi control PCB assembly out of the indoor unit. A Wall mounted indoor unit a Wifi control PCB assembly A Floor standing indoor unit a Wifi control PCB assembly 3 To install wifi control assembly, "4.20.2 ...
Page 203 Components A Wall mounted indoor unit a Wifi control PCB assembly A Floor standing indoor unit a Wifi control PCB assembly 2 Connect the harness to the wifi control PCB assembly. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 204 Components 5 To install the wifi control PCB wiring harness, see "4.20.2 Repair procedures" [ 201]. To install the wifi control PCB wiring harness 1 Connect the wiring harness connector to the indoor unit main 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 pins of the PCB.
Page 205: 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 "4.14 Plate work" [ 153].
Page 206: 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 "5.1.2 Repair procedures" [ 206]. Adjust the power supply to the unit, see "5.1.2 Repair procedures" [ 206]. 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 207: 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 "4.14 Plate work" [ 153].
Page 208 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 209 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 210 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 211 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 212: Repair Procedures
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" [ 212]. 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 213 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" [ 214] 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 214 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 215: 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 216 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 217: 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 218: To Clean The Indoor Unit Heat Exchanger In Extreme Condition
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 219: To Clean The Front Panel
Maintenance 6.5 To clean the front panel Floor standing units WARNING Do NOT let the indoor unit get wet. Possible consequence: Electrical shock or fire. NOTICE ▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide. Possible consequence: Discoloration and deformation. ▪...
Page 220: To Clean The Air Filters
Maintenance 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 Floor standing units ▪ REMOVE THE FILTER 1 Remove the front panel, see "4.14 Plate work" [ 153].
Page 221 Maintenance 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 222 Maintenance Note: (class 50~71) The titanium apatite deodorising filter and the silver allergen removal air purifying filter MUST be removed before cleaning the air filter. 3 Remove the titanium apatite deodorising filter and the silver particle filter from all 4 claws. a Claw 4 Wash the air filters with water or clean them with a vacuum cleaner.
Page 223: To Clean The Titanium Apatite Deodorising Filter And The Silver Particle Filter (Ag-Ion Filter)
Maintenance 6.7 To clean the titanium apatite deodorising filter and the silver particle filter (Ag-ion filter) INFORMATION Clean the filter with water every 6 months. 1 Remove: ▪ for class 15~42: silver allergen removal air purifying filter from the tabs ▪...
Page 224 Maintenance To order titanium apatite deodorising filter or silver particle filters, contact your dealer. Item Part number Titanium deodorising filter KAF970A46 Silver particle filter KAF057A41 RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32 ESIE20-11B –...
Page 225: 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 226: 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 227 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 228 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 229 Technical data FTXM20~42R + ATXM25+35R 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 UNIT S102...
Page 230 Technical data FTXM50~71R + ATXM50R 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 UNIT S102...
Page 231 Technical data FVXM-A 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. S101 Wireless remote controller C101 C102 S103...
Page 232: Wiring Diagram: Outdoor Unit
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 233 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 234 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 235 Technical data RXM20~35R + ARXM25+35R 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 For the power requirements, refer to the nameplate.
Page 236 Technical data RXM50+60R + ARXM50~71R 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 Field wiring For the power requirements, refer to the nameplate.
Page 237: Piping Diagram
Technical data 7.3 Piping diagram 7.3.1 Piping diagram: Indoor unit FTXM20R 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 238 Technical data FTXM25~42R + ATXM25+35R 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 ·6.4·...
Page 239 Technical data FTXM50+60R + ATXM50R 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 6.4 CuT 12.7 CuT 12.7 CuT...
Page 240 Technical data FTXM71R 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 6.4 CuT 12.7 CuT 15.9 CuT a Field piping (liquid: Ø6.4 mm flare connection)
Page 241 Technical data FVXM25+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. 4.0CuT 5.0CuT 4.0CuT 5.0CuT 4.0CuT 5.0CuT (6.4CuT)
Page 242 Technical data FVXM50A 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. 4.0CuT 5.0CuT 4.0CuT 5.0CuT 4.0CuT 5.0CuT (6.4CuT)
Page 243: Piping Diagram: Outdoor Unit
Technical data 7.3.2 Piping diagram: Outdoor unit RXM20~35R + ARXM25+35R 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 244 Technical data RXM42R 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 245 Technical data RXM50+60R + ARXM50+60R 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·...
Page 246 Technical data RXM71R + ARXM71R 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·...
Page 247: Component Overview
Technical data 7.4 Component overview 7.4.1 Component overview: Outdoor unit RXM20~35R + ARXM25+35R a Air thermistor R1T i Main PCB A1P b Heat exchanger j Power supply terminal X1M c Heat exchanger thermistor R2T k Expansion valve Y1E d Muffler with filter l Muffler e Stop valve with service port (gas) m Accumulator...
Page 248 Technical data RXM42~71R + ARXM50~71R a Air thermistor R1T j Main PCB A1P b Heat exchanger k Power supply terminal X1M c Heat exchanger thermistor R2T l Muffler d Liquid receiver m Expansion valve Y1E e Stop valve with service port (gas) n Muffler with filter f Stop valve (liquid) o Accumulator...
Page 249: Component Overview: Wall Mounted Indoor Unit
Technical data 7.4.2 Component overview: Wall mounted indoor unit FTXM20~42R + ATXM25+35R a Heat exchanger h Display PCB A3P b Streamer unit i Swing flap c Indoor unit main PCB A1P j Fan d Switch box k Heat exchanger thermistor R2T e Indoor unit power PCB A2P l Indoor unit fan motor M1F f Wifi control PCB A6P...
Page 250 Technical data FTXM50~71R + ATXM50R a Heat exchanger h Swing flap b Indoor unit main PCB A1P i Fan c Switch box j Heat exchanger thermistor R2T d Indoor unit power PCB A2P k Indoor unit fan motor M1F e Wifi control PCB A6P l Swing raster motor M1S f Intelligent eye sensor (PCB A5P) m Swing flap motor M2S...
Page 251: Component Overview: Floor Standing Indoor Unit
Technical data 7.4.3 Component overview: Floor standing indoor unit FVXM-A a Heat exchanger i Switch box b Streamer unit j Service PCB A4P c Swing flap k Indoor unit power PCB A2P d Upper air outlet assembly l Humidity sensor (PCB A5P) e Swing flap motor M1S m Heat exchanger thermistor R1T f Display PCB A3P...
Page 252: Field Information Report
Technical data 7.5 Field information report See next page. RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32 ESIE20-11B – 2022.02...
Page 253 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 254 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 255: Service Tools
Technical data 7.6 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 256: Field Settings
Technical data 7.7 Field settings 7.7.1 To control heating only mode Prerequisite: Stop operation of the unit. 1 Press , and simultaneously. 2 Press 3 Select SU. 4 Press to confirm. 5 Press 6 Select 19. 7 Press to confirm. 8 Press 9 Select 1 (0: factory setting, 1: heating only).
Page 257: To Control The Indoor Unit Fan During Thermostat Off In Cooling
Technical data 7.7.3 To control the indoor unit fan during thermostat off in cooling Wall mounted units 1 Press , and simultaneously. 2 Press 3 Select SU. 4 Press to confirm. 5 Press 6 Select 4. 7 Press to confirm. 8 Press 9 Select 0 (0: fan ON, 1: fan OFF (factory setting)).
Page 258: To Change Auto Restart On To Off
Technical data 7.7.4 To change auto restart ON to OFF INFORMATION After power failure, the unit will automatically restart (default setting). It is possible to switch OFF auto restart. For example: after a long power failure, generators have to start‑up. As there is limited energy and the air conditioners do NOT have priority, it is recommended to switch OFF auto restart.
Page 259: To Reduce Maximum Sound Levels
Technical data 7.7.6 To reduce maximum sound levels INFORMATION ONLY applicable for RXM-R9 and ARXM-R9 units. 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 260 ESIE20-11B 2022.02 Verantwortung für Energie und Umwelt...

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