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Daikin FTXP20-71L, Service Manual

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Daikin FTXP20-71L Service Manual Download Page 171

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Technical data

Service manual

171

ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01

FTXP20~25M + ATXP20~25M

6.4CuT

9.5CuT

9.5CuT

6.4CuT

a

b

c

d

R2T

M1F

a

Field piping (liquid: Ø6.4 mm flare connection)

b

Field piping (gas: Ø9.5 mm flare connection)

c

Crossflow fan

d

Heat exchanger

M1F

Fan motor

R2T

Thermistor (heat exchanger)
Heating
Cooling

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.

Summary of Contents for FTXP20-71L

Page 1: ...Service manual Split Comfora R32 FTXP20 71L FTXP20 35M 9 FTXP50 71M FTXP20 71N ATXP20 35L ATXP20 35M ATXP20 35N RXP20 71L RXP20 71M RXP20 71N ARXP20 35L ARXP20 35M ARXP20 35N...

Page 2: ...ion 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 presen...

Page 3: ...Service Manual Indoor unit models FTXP20 35M9 added Technical data Wiring diagram Wiring diagrams for new models added Version code Description Date ESIE18 01D See below February 2022 The following u...

Page 4: ...17 H3 00 Outdoor unit Malfunction of high pressure switch 27 2 5 18 H6 00 Outdoor unit Malfunction of position detection sensor 28 2 5 19 H8 00 Outdoor unit Malfunction of compressor input system 29 2...

Page 5: ...es 138 3 14 2 Repair procedures 139 4 Third party components 142 4 1 Electrical circuit 142 4 1 1 Checking procedures 142 4 1 2 Repair procedures 143 4 2 Refrigerant circuit 144 4 2 1 Checking procedu...

Page 6: ...r shutting down the system in case of an emergency Name and address of fire department police and hospital Name address and day and night telephone numbers for obtaining service In Europe EN378 provid...

Page 7: ...ls of main circuit capacitors or electrical components before servicing The voltage MUST be less than 50 V DC before you can touch electrical components For the location of the terminals see the wirin...

Page 8: ...like water oil or other substances Protect bystanders from injury and property from possible damage cause by service works WARNING If any work is to be conducted on the refrigerating equipment or any...

Page 9: ...ARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead...

Page 10: ...unit to a utility pipe surge absorber or telephone earth Incomplete earthing may cause electrical shock WARNING ONLY use copper wires Make sure the field wiring complies with the applicable legislati...

Page 11: ...in case analysis is required prior to re use of recovered refrigerant It is essential that electrical power is available before the task is commenced Become familiar with the equipment and its operat...

Page 12: ...ents are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt Do NOT overfill the refrigerant cylinder confirm with the supplier of the refrigerant cylinde...

Page 13: ...TION Do NOT place any objects or equipment on top of the unit Do NOT sit climb or stand on the unit 1 5 Notices NOTICE Make sure water quality complies with EU directive 2020 2184 Check the system for...

Page 14: ...reset the error code via outdoor unit Prerequisite Problem is solved 1 Perform a power reset to reset the error code 2 4 To perform a test run Prerequisite Power supply MUST be in the specified range...

Page 15: ...r Effect Reset The system CANNOT set the internal settings Unit will stop operating Power reset via outdoor unit To solve the error code INFORMATION It is recommended to perform the checks in the list...

Page 16: ...RMATION It is recommended to perform the checks in the listed order 1 Check for objects near the indoor unit that may block the airflow See 4 3 External factors 4152 Possible cause Airflow of the indo...

Page 17: ...sible cause Faulty indoor unit fan motor INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5 4 C4 00 Heat exchanger temperature sen...

Page 18: ...If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5 6 E1 00 Outdoor unit PCB defect Trigger Effect Reset Main PCB detects that EEPROM is abnorm...

Page 19: ...ed above have been performed and the problem is still present contact the helpdesk 2 5 7 E3 00 Outdoor unit Actuation of high pressure switch Trigger Effect Reset High pressure switch opens due to mea...

Page 20: ...it runs without warning for 60 seconds 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 21: ...erform the checks in the listed order 1 Perform a check of the discharge pipe thermistor See 3 13 Thermistors 4129 Possible cause Faulty discharge pipe thermistor or connector fault 2 Check that all s...

Page 22: ...ORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the outdoor unit fan motor See 3 8 Outdoor unit fan motor 4100 Possible cause Faulty outdoor unit fan motor 2...

Page 23: ...l NOT stop operating Automatic reset after a continuous operation for some time If the error occurs too soon unit will stop operating Manual reset via user interface To solve the error code INFORMATIO...

Page 24: ...NFORMATION 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 4144 Possible cause Closed stop valv...

Page 25: ...rform a check of the heat exchanger thermistor See 3 13 Thermistors 4129 Possible cause Faulty heat exchanger thermistor 4 Perform a check of the expansion valve See 3 3 Expansion valve 463 Possible c...

Page 26: ...the refrigerant circuit See 4 2 Refrigerant circuit 4144 Possible cause Non condensables and or humidity in the refrigerant circuit 4 Check if the refrigerant circuit is clogged See 4 2 Refrigerant c...

Page 27: ...d Possible cause Thermal interface grease NOT applied properly on the heat sink INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5...

Page 28: ...heck of the main PCB See 3 7 Main PCB 484 Possible cause Faulty main PCB 3 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4144 Possible cause Closed stop va...

Page 29: ...2 Compressor 452 Possible cause Faulty compressor or miswiring of the compressor power supply cable 3 Perform a check of the reactor See 3 10 Reactor 4122 Possible cause Faulty reactor INFORMATION If...

Page 30: ...e been performed and the problem is still present contact the helpdesk 2 5 22 J6 00 Outdoor unit Malfunction of heat exchanger thermistor Trigger Effect Reset Outdoor heat exchanger thermistor input i...

Page 31: ...sible cause Dirty outdoor heat exchanger INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5 24 L4 00 Outdoor unit Malfunction of i...

Page 32: ...that flows in the inverter DC section Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check...

Page 33: ...face of the heat sink Adjust if needed Possible cause Thermal interface grease NOT applied properly on the heat sink INFORMATION If all procedures listed above have been performed and the problem is s...

Page 34: ...t 4144 Possible cause Non condensables and or humidity in the refrigerant circuit 6 Perform a check of the compressor See 3 2 Compressor 452 Possible cause Faulty compressor or miswiring of the compre...

Page 35: ...6 Indoor unit main PCB 478 Possible cause Faulty indoor unit main PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5 29 U4 00...

Page 36: ...le cause Thermal interface grease NOT applied properly on the heat sink INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 5 30 UA 0...

Page 37: ...ing Service manual 37 ATXP20 35 FTXP20 71 ARXP20 35 RXP20 71 Split Comfora R32 ESIE18 01E 2023 01 INFORMATION If all procedures listed above have been performed and the problem is still present contac...

Page 38: ...annot be used when the outdoor temperature is below 10 C DB When the operation lamp blinks there may be an error code activating the protection device Diagnose with remote controller indication See 2...

Page 39: ...s defective is there a refrigerant leakage Is there capacity loss over the condensor saturation pressure or sound because of air mixed in to the circuit Incorrect size of connection wiring When the op...

Page 40: ...f the mounting wall is too thin you must use cushion material or rubber or change the installation place Refrigerant piping is too short is the length within specified range Due to bad installation or...

Page 41: ...efrigerant system Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Is the refrigerant overcharged Conduct refrigerant collection and vacuum drying and then add p...

Page 42: ...expansion valve capillary Check if there is a temperature difference before and after expansion valve capillary Check if the main valve unit of expansion valve operates by noise vibration Is the check...

Page 43: ...the electric system Check the thermistor Connection with PCB Output Check PCB s HAP LED s if applicable if green led on the control PCB is not blinking then the microprocessor is not working if the g...

Page 44: ...em Check the fan motor Check the magnetic switch Check the overcurrent relay Check the four way valve coil Is there a short circuit Is the four way valve coil broken Check the outdoor PCB Is there a s...

Page 45: ...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 Swing flap does not operate Check swing flap motor Som...

Page 46: ...it for it to cool down 2 Verify that the screw is firmly fixing the coil to the valve body 3 Check if any damage or burst is present Is the 4 way valve coil firmly fixed and not visually damaged Actio...

Page 47: ...asured voltage MUST be 0 V DC Are the measured voltages correct Action Yes Perform a position check of the 4 way valve see 3 1 1 Checking procedures 446 No Perform a check the main PCB see 3 7 Main PC...

Page 48: ...de of the 4 way valve 2 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 See 6 3 Piping diagram 4170 Is the flow...

Page 49: ...the flow diagram of the specific operation mode See 6 3 Piping diagram 4170 Is the flow correct Action Yes 4 way valve is OK Return to the troubleshooting of the specific error and continue with the n...

Page 50: ...Repair procedures 4148 1 Remove the 4 way valve coil from the 4 way valve body see 3 1 2 Repair procedures 449 2 Remove and keep the putty if installed and the insulation if installed for re use 3 Sup...

Page 51: ...ve body in the correct location and correctly oriented Insert the pipe ends in the pipe expansions 4 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 5 Wrap a...

Page 52: ...Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 3 2 Compressor 3 2 1 Checking procedures INFORM...

Page 53: ...r see 3 2 2 Repair procedures 458 No Perform an mechanical check of the compressor see 3 2 1 Checking procedures 452 To perform a mechanical check of the compressor Prerequisite First perform an audit...

Page 54: ...see 3 2 1 Checking procedures 452 No Replace the compressor and or damaged dampers see 3 2 2 Repair procedures 458 To perform an electrical check of the compressor 1 First perform a mechanical check o...

Page 55: ...inals to allow correct connection during installation V U W U Wire terminal U V Wire terminal V W Wire terminal W CAUTION Before measuring the compressor motor windings resistance measure the resistan...

Page 56: ...mpressor 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...

Page 57: ...ee 3 2 1 Checking procedures 452 Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Before proceeding DANGER RISK OF ELECTROCUTION Wait...

Page 58: ...he compressor see 3 2 2 Repair procedures 458 3 2 2 Repair procedures To remove the compressor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit...

Page 59: ...minal U V Wire terminal V W Wire terminal W 4 If applicable remove the screw and disconnect the ground wire from the compressor 5 Remove the following thermistors from their holder Suction thermistor...

Page 60: ...ant pipes by heating the brazing point s of the component pipe s using an oxygen acetylene torch 9 Remove the nuts and bolts and remove the compressor from the unit a a b c c c a a Nut b Compressor c...

Page 61: ...pic Therefore remove the caps from the compressor pipes as late as possible 5 Install the compressor on the correct location on the dampers Properly insert the refrigerant pipes in the pipe expansions...

Page 62: ...r 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 Connect the Faston conne...

Page 63: ...solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 3 3 Expansion valve 3 3 1 Checking procedures INFORMATION It i...

Page 64: ...valve body INFORMATION It is highly recommended to perform a power reset after checking the valve using a magnet Does the expansion valve open Action Yes Perform an electrical check of the expansion v...

Page 65: ...orrect location and do NOT apply force as this may damage the connector or connector pins of the PCB Is the measured resistance correct Action Yes Perform an operation check of the expansion valve see...

Page 66: ...closing sequence each expansion valve winding 1 2 3 4 is supplied with 12 V DC from the PCB You will need a good multimeter where its range is set to about 20 V DC and during opening or closing sequen...

Page 67: ...he respective circuit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 If needed remove any parts or insulation to create more space for the removal 2 Remove the cap if ap...

Page 68: ...2 Repair procedures 467 To remove the expansion valve body Prerequisite Recuperate the refrigerant from the refrigerant circuit see 4 2 2 Repair procedures 4148 Prerequisite If needed remove any part...

Page 69: ...ugs or caps on the open pipe ends of the refrigerant piping to avoid dirt or impurities from entering the piping 9 To install the expansion valve body see 3 3 2 Repair procedures 467 To install the ex...

Page 70: ...l see 3 3 2 Repair procedures 467 10 Perform a pressure test see 4 2 1 Checking procedures 4144 11 Add refrigerant to the refrigerant circuit see 4 2 2 Repair procedures 4148 About the installation of...

Page 71: ...r 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 Is the problem solved Action Yes No further actions...

Page 72: ...sing new tie straps 5 Install the insulation cap on the expansion valve coil if applicable Is the problem solved Action Yes No further actions required No Return to 3 3 1 Checking procedures 463 of th...

Page 73: ...easure the resistance between the Faston connections of the high pressure switch Result The switch MUST be open INFORMATION If the high pressure switch was triggered open it will stay open until the r...

Page 74: ...pressure switch Heat the brazing point of the high pressure switch pipe using an oxygen acetylene torch and remove the high pressure switch pipe from the refrigerant pipe using pliers a c b b a High...

Page 75: ...or destroy it 5 After soldering is done stop the nitrogen supply after the component has cooled down 6 Connect the Faston connectors to the high pressure switch 7 Perform a pressure test see 4 2 1 Ch...

Page 76: ...uisite First perform a mechanical check of the DC fan motor assembly see 3 5 1 Checking procedures 475 1 Remove the cover from the switch box see 3 9 Plate work 4111 2 Disconnect the DC fan motor conn...

Page 77: ...uit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 Remove the switch box see 3 9 Plate work 4111 2 Click the indoor unit fan motor cover out of the indoor unit If needed...

Page 78: ...with the next procedure 3 6 Indoor unit main PCB 3 6 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a power check of the indoor unit main PCB...

Page 79: ...door unit PCB see 3 6 2 Repair procedures 481 No See To check the power supply to the indoor unit 4 1 2 Repair procedures 4143 for the next steps To perform an electrical check of the indoor unit main...

Page 80: ...onnected and that all connectors are fully plugged in 2 Check that no connectors or wires are damaged 3 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4159 INFORMATIO...

Page 81: ...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 9 Plate work 4111 1 Correct...

Page 82: ...pports b b a b a Indoor unit main PCB b PCB support 2 Connect all connectors to the indoor unit main PCB INFORMATION Use the wiring diagram and connection diagram for correct installation of the conne...

Page 83: ...work see 3 9 Plate work 4111 1 Remove the fuse from the PCB a a Fuse 2 To install a fuse on the indoor unit PCB see 3 6 2 Repair procedures 481 To install a fuse on the indoor unit main PCB 1 Install...

Page 84: ...e work 4111 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 b a Black wire b White wire Is the measured voltage o...

Page 85: ...ed voltage on the PCB correct Action Yes Return to 3 7 1 Checking procedures 484 of the PCB and continue with the next procedure No Continue with the next step 3 Check the power supply to the unit see...

Page 86: ...lable on the PCB If NOT update using the updater tool Does the HAP LED blink in regular intervals 1 second ON 1 second OFF Action Yes Return to 3 7 1 Checking procedures 484 of the main PCB and contin...

Page 87: ...aker 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 diag...

Page 88: ...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 chec...

Page 89: ...RXP50 71N units Prerequisite First perform all earlier main PCB checks see 3 7 1 Checking procedures 484 1 Measure the continuity of the fuse If no continuity is measured the fuse has blown a a Fuse...

Page 90: ...dures 484 of the main PCB and continue with the next procedure To check the rectifier voltage of the main PCB Prerequisite First perform all earlier main PCB checks see 3 7 1 Checking procedures 484 1...

Page 91: ...Repair procedures 496 To perform a diode module check 1 First check the rectifier voltage of the main PCB see 3 7 1 Checking procedures 484 INFORMATION If the rectifier voltage is OK the diode module...

Page 92: ...XP20 35N RXP20 35N units 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...

Page 93: ...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...

Page 94: ...ith the test leads of the multi meter VDC Com Ref VDC Com Ref U DC 0 501 V DC U O L V DC 0 501 V DC V O L W DC 0 501 V DC W O L DC U 0 501 V U DC O L DC V 0 501 V V DC O L DC W 0 501 V W DC O L Power...

Page 95: ...C U O L V DC 0 475 V DC V O L W DC 0 475 V DC W O L DC U 0 475 V U DC O L DC V 0 475 V V DC O L DC W 0 475 V W DC O L Are the test results OK Action Yes Power modules are OK Return to 3 7 1 Checking p...

Page 96: ...oken wires Is the problem solved Action Yes No further actions required No Return to 3 7 1 Checking procedures 484 of the PCB and continue with the next procedure To remove the main PCB ARXP L ARXP M...

Page 97: ...ctive circuit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 Disconnect all connectors and Faston connectors from the main PCB a a a b b a Screw b PCB support 2 Remove t...

Page 98: ...upply terminal X1M 7 Connect the red wire to the main power supply terminal X1M 8 Fix the ferrite core for power supply wiring to the switch box fixation plug 9 Connect all connectors to the main PCB...

Page 99: ...ct installation of the connectors see 6 2 Wiring diagram 4159 Is the problem solved Action Yes No further actions required No Return to 3 7 1 Checking procedures 484 of the PCB and continue with the n...

Page 100: ...rrect location on the PCB CAUTION Make sure the fuse is plugged in correctly contact with the fuse holder a a Fuse Is the problem solved Action Yes No further actions required No Return to 3 7 1 Check...

Page 101: ...fan motor see Repair procedures 4104 That fan motor fixation bolts are correctly installed and fixed Correct as needed 2 Manually rotate the fan motor shaft Check that it rotates smoothly 3 Check the...

Page 102: ...red resistance MUST be VDC Comm Resistance 1 4 71 79 1 7 4 7 10 GND 1 OL 4 7 11 1 96 k 12 10 9 k 13 INFORMATION The measured resistance values may deviate from the listed values due to instability dur...

Page 103: ...ee Checking procedures 4100 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...

Page 104: ...Yes Perform a check of the main PCB see 3 7 1 Checking procedures 484 No Replace the DC fan motor see Repair procedures 4104 Problem solved After all checking procedures listed above have been perform...

Page 105: ...rom the unit 9 To install the DC fan motor assembly see Repair procedures 4104 To install the DC fan motor assembly 1 Install the DC fan motor assembly in the correct location 2 Fix the DC fan motor a...

Page 106: ...ted on its base see Repair procedures 4109 2 Check the state of the propeller fan blade assembly for damage deformations and cracks Is the propeller fan blade assembly damaged Action Yes Replace the p...

Page 107: ...specific error and continue with the next procedure Does not rotate or rotates for a short time Continue with the next step INFORMATION The DC fan motor connector MUST be plugged into the appropriate...

Page 108: ...connector S71 pins 2 4 rotation command on the PCB Result The measured voltage should be 0 7 V DC It should NOT be 0 V DC Is the measured voltage 0 V DC Action Yes Perform a check of the main PCB see...

Page 109: ...e 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 4109 To remov...

Page 110: ...otor harness to the switch box 5 Install a new tie strap to fix the DC fan motor harness to the switch box 6 Connect the DC fan motor connector to the connector on the main PCB 7 Lock the ferrite bead...

Page 111: ...2 1 1 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...

Page 112: ...tails for your actual unit Prerequisite Remove the top plate see 3 9 Plate work 4111 1 Loosen and remove the screws that fix the front plate a a a a a a a Screw b Front plate 2 Remove the front plate...

Page 113: ...on some details for your actual 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...

Page 114: ...ESIE18 01E 2023 01 f a d c b e 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 wi...

Page 115: ...tch box from the outdoor unit 9 To install the switch box see 3 9 Plate work 4111 To install the switch box INFORMATION This procedure is just an example and may differ on some details for your actual...

Page 116: ...e wire terminals 4 Install the wire clamp and fix it using the screws 5 Connect all connectors to the main PCB INFORMATION Use the wiring diagram and connection diagram for correct installation of the...

Page 117: ...71 Split Comfora R32 ESIE18 01E 2023 01 a b a Cable tie b Switch box 7 Install the insulation on the upper side of the switch box a b a Insulation b Main PCB 3 9 2 Indoor unit To open the front panel...

Page 118: ...the left or the right and pulling it toward you Result The front panel shaft on 1 side will be disconnected 3 Disconnect the front panel shaft on the other side in the same manner a a Front panel shaf...

Page 119: ...ard you 1 2 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 b a Service cover...

Page 120: ...isite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 Disconnect the power supply wiring from the power supply terminal X1M 2 Remove the s...

Page 121: ...ox and connect them to the indoor unit PCB 3 Install and tighten the screw to secure the switch box 4 Install the heat exchanger thermistor in its holder 5 Connect the grounding wires to the heat exch...

Page 122: ...e rectifier voltage is below 10 V DC before proceeding 3 Remove the cover of the compressor wire terminals a a Compressor wire terminals cover 4 Visually check the reactor for any damage or burnt out...

Page 123: ...e the required plate work see 3 9 Plate work 4111 2 Open the compressor insulation DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure th...

Page 124: ...11 1 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 Prereq...

Page 125: ...quisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 Remove both swing flaps from the indoor unit by clicking it out 2 Remove the cover...

Page 126: ...troubleshooting of the specific error and continue with the next procedure 3 12 Swing raster motor 3 12 1 Checking procedures To perform an electrical check of the swing raster motor Prerequisite Stop...

Page 127: ...ir procedures 4127 3 12 2 Repair procedures To remove the swing raster motor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisi...

Page 128: ...ing raster motor and remove the motor Keep the rod and bracket for reuse 8 To install the swing raster motor see 3 12 2 Repair procedures 4127 To install the swing raster motor 1 Install the swing ras...

Page 129: ...m solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 3 13 Thermistors 3 13 1 Refrigerant side thermistors Checkin...

Page 130: ...9 2 Locate the thermistor INFORMATION Remove the thermistor from its holder if not reachable with a contact thermometer 3 Measure the temperature using a contact thermometer Name Symbol Location PCB C...

Page 131: ...81 08 76 93 73 01 69 32 21 22 23 24 25 26 27 28 29 23 91 22 85 21 85 20 90 20 00 19 14 18 32 17 54 16 80 51 52 53 54 55 56 57 58 59 6 91 6 65 6 41 6 65 6 41 6 18 5 95 5 74 5 14 0 65 84 30 16 10 60 4...

Page 132: ...ue matches the resistance determined through the measured temperature but the temperature for the corresponding thermistor is NOT correct on the user interface display replace the applicable PCB INFOR...

Page 133: ...via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 9 Plate work 4111 1 Disconnect the connector from the display PCB 2 Press...

Page 134: ...MATION 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 4159 ALWAYS re...

Page 135: ...the unit 2 Connect the connector to the display PCB Other refrigerant side thermistors 1 Install the thermistor as follows For outdoor unit air ambient thermistor Insert the thermistor in the protect...

Page 136: ...en 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 thermistor harness...

Page 137: ...50 7 18 80 2 47 9 8 7 6 5 4 3 2 1 106 03 100 41 95 14 90 17 85 49 81 08 76 93 73 01 69 32 21 22 23 24 25 26 27 28 29 23 91 22 85 21 85 20 90 20 00 19 14 18 32 17 54 16 80 51 52 53 54 55 56 57 58 59 6...

Page 138: ...the thermistor match with the temperature determined resistance Action Yes Thermistor is OK Return to the troubleshooting of the specific error and continue with the next procedure No Replace the spec...

Page 139: ...main PCB see 3 6 1 Checking procedures 478 5 As there are no further check procedures for this component perform a check of the indoor unit main PCB to check if the wifi control PCB needs to be repla...

Page 140: ...CB assembly Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To remove the wifi control PCB wiri...

Page 141: ...ctor 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 p...

Page 142: ...hases MUST NOT exceed 2 Is the measured voltage power supply correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Adjust the power supply see...

Page 143: ...with the wiring diagram see 6 2 Wiring diagram 4159 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the speci...

Page 144: ...tion Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 4 2 Refrigerant circuit 4 2 1 Checking procedures INFORMATION It is rec...

Page 145: ...ad the pressure on the pressure gauge If at the start of the unit operation the pressure is high or very low the refrigerant circuit might be clogged 7 On the refrigerant liquid piping between the ind...

Page 146: ...increases on the capacity control Low pressure is maintained at a certain level High pressure drooping control Operating frequency comes to the lowest level Subcooling degree becomes higher The tempe...

Page 147: ...cooling control with low outdoor air Low pressure rises with increasing opening degree of the electronic expansion valve and the operating frequency slightly increases due to the capacity control High...

Page 148: ...gnificantly higher 5K non condensables gasses are most likely present in the refrigerant Any non condensables found in the refrigerant circuit Action Yes To replace the refrigerant see 4 2 2 Repair pr...

Page 149: ...ee the correct procedure for the component that needs to be repaired See also Repair information 4150 for more details Is the problem solved Action Yes No further actions required No Return to the tro...

Page 150: ...ke sure to use the appropriate equipment and tools according to the refrigerant and unit type R32 can be charged in gas phase Make sure to use a digital scale no charging cylinder Execute correct vacu...

Page 151: ...and stop forced cooling operation Refrigerant piping repair Make sure to cover open pipe ends during repair so no dust or moisture can enter Make sure to re apply insulation removed during repair Pip...

Page 152: ...the system If multiple vacuum cycles need to be performed break the vacuum between the cycles using dry nitrogen Depending on the site conditions as mentioned above lower pressure values MIGHT be nee...

Page 153: ...1 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 Yes No...

Page 154: ...oor unit heat exchanger from dust leaves using a fin comb or compressed air N2 CAUTION Avoid bending or damaging the hair fins of the outdoor unit heat exchanger during the cleaning process Do NOT use...

Page 155: ...the cleaning process CAUTION Rinse out the cleaning agent until there is NO cleaning agent left Otherwise the corrosion of heat exchanger and drain pan may occur Pay attention to the cleaning agent t...

Page 156: ...ted in lukewarm water Dry the air filters in the shade Be sure to remove the titanium apatite deodorising filter It is recommended to clean the air filters every 2 weeks ATXP M ATXP N FTXP M FTXP N 6...

Page 157: ...f easily wash the air filters with a neutral detergent diluted in lukewarm water Dry the air filters in the shade Be sure to remove the titanium apatite deodorising and silver particle filters It is r...

Page 158: ...ailed 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 gu...

Page 159: ...iring diagram Indoor Indoor Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote control Wireless remote control Horizontal Horizontal Vertical Ver...

Page 160: ...oard R1T Room thermistor R2T Suction pipe thermistor S6 S602 Connector S1W Operation switch V2 Varistor X1M Terminal strip Z C Ferrite core FTXP20 35M9 1 Wiring diagram English Translation Wiring diag...

Page 161: ...Caution When the main power is turned off and then back on again operation will resume automatically 3 Legend A1P A4P Printed circuit board BZ Buzzer FG Frame ground FU1 Fuse H Harness IPM Intelligen...

Page 162: ...er Signal receiver Wireless remote control Wireless remote control Horizontal Horizontal Vertical Vertical WI FI control adapter WI FI control adapter Shield plate Shield plate 2 Notes English Transla...

Page 163: ...relay R1T Room thermistor R2T Suction pipe thermistor S1 S800 Connector S1W Operation switch V1 Varistor X1M Terminal strip Z C Ferrite core FTXP50 71L FTXP50 71M FTXP50 71N 1 Wiring diagram English T...

Page 164: ...and then back on again operation will resume automatically 3 Legend FG HE S6 S900 Connector F1U FU1 Fuse T1R L301 Transformer M1F Fan motor M S Swing flap motor K1R MR10 Magnetic relay A P Printed ci...

Page 165: ...diagram Wiring diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Note Note Connection X1M Main terminal Field supply PCB Protective earth Field...

Page 166: ...hermistor Y1E Electronic expansion valve Z C Noise filter ferrite core Z F Noise filter ARXP20 35N RXP20 35N 1 Wiring diagram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Ou...

Page 167: ...pressor motor M1F Fan motor A1P Printed circuit board PS Switching power supply Q1L Overload protector R1T Thermistor air R2T Thermistor heat exchanger R3T Thermistor discharge SA Surge arrestor S10 S...

Page 168: ...RN Green GRY Grey ORG Orange RED Red WHT White YLW Yellow For the power requirements refer to the nameplate 3 Legend C Capacitor D Diode DB1 Diode bridge E1 E2 HL1 HN1 S U V W Connector FU1 FU2 FU3 Fu...

Page 169: ...XP20 71 Split Comfora R32 ESIE18 01E 2023 01 S1PH High pressure switch S2 S90 Terminal connector SA1 Surge arrestor V1 V2 V3 Varistor X11A Connector X1M Terminal strip Y1E Electronic expansion valve Y...

Page 170: ...6 4CuT 9 5CuT 9 5CuT 6 4CuT a b c d R2T M1F a Field piping liquid 6 4 mm flare connection b Field piping gas 9 5 mm flare connection c Crossflow fan d Heat exchanger M1F Fan motor R2T Thermistor heat...

Page 171: ...1F a Field piping liquid 6 4 mm flare connection b Field piping gas 9 5 mm flare connection c Crossflow fan d Heat exchanger M1F Fan motor R2T Thermistor heat exchanger Heating Cooling INFORMATION The...

Page 172: ...1F a Field piping liquid 6 4 mm flare connection b Field piping gas 9 5 mm flare connection c Crossflow fan d Heat exchanger M1F Fan motor R2T Thermistor heat exchanger Heating Cooling INFORMATION The...

Page 173: ...e a Field piping liquid 6 4 mm flare connection b Field piping gas 12 7 mm flare connection c Crossflow fan d Heat exchanger e Distributor M1F Fan motor R2T Thermistor heat exchanger Heating Cooling...

Page 174: ...liquid 6 4 mm flare connection b Field piping gas 9 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 Comp...

Page 175: ...alve with service port gas e Muffler with filter f Heat exchanger g Accumulator h Muffler S1PH High pressure switch M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T...

Page 176: ...b Field piping gas 9 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 M1F Fan R1T Thermistor o...

Page 177: ...e with service port gas e Muffler with filter f Heat exchanger g Accumulator h Muffler S1PH High pressure switch M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T The...

Page 178: ...6 4 mm flare connection b Field piping gas 12 7 mm flare connection c Stop valve liquid d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter i Heat exchanger j Accumulator M1C C...

Page 179: ...Field piping liquid 6 4 mm flare connection b Field piping gas 12 7 mm flare connection c Stop valve liquid d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter i Heat exchange...

Page 180: ...plit Comfora R32 ESIE18 01E 2023 01 6 4 Component overview 6 4 1 Component overview Indoor unit ATXP L FTXP L a b c d e f h g a Heat exchanger b Heat exchanger thermistor R2T c Fan motor d Swing flap...

Page 181: ...1 Split Comfora R32 ESIE18 01E 2023 01 ATXP M ATXP N FTXP M FTXP N a b c d e f h g i j a Heat exchanger b Heat exchanger thermistor R2T c Fan motor d Swing flap e Swing flap motor f Room thermistor R1...

Page 182: ...h m m a Air thermistor R1T j Service PCB b Heat exchanger k High pressure switch only for RXP50 71L RXP50 71M RXP50 71N and ARXP20 35M c Expansion valve l Discharge pipe thermistor R3T d Heat exchange...

Page 183: ...6 Technical data Service manual 183 ATXP20 35 FTXP20 71 ARXP20 35 RXP20 71 Split Comfora R32 ESIE18 01E 2023 01 6 5 Field information report See next page...

Page 184: ...tion is required Please fill out the following form before contacting your distributor FIELD INFORMATION REPORT Key person information Name Company name Your contact details Phone number E mail addres...

Page 185: ...CB A1P Software version hydro PCB A5P Software version user interface Software version outdoor PCB Minimum water volume Maximum water volume Brine composition and mixture Brine freeze up temperature S...

Page 186: ...vice 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 ove...

Page 187: ...set temperature in heating operation INFORMATION When there is a big difference between the indoor room temperature and the set temperature in heating mode adjust the target set temperature field sett...

Page 188: ...ng 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 recommend...

Page 189: ...n the circuit board using nippers or a similar tool to expand the operation range of the outdoor unit down to 15 C INFORMATION The outdoor unit will stop operating when the temperature drops below 20...

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Page 192: ...ESIE18 01E 2023 01 Copyright 2019 Daikin Verantwortung f r Energie und Umwelt...

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