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Service manual

Split Sensira R32

FTXF20~71A
FTXF20~25B
FTXF20~42C
FTXF20~42D
FTXF20~42E
ATXF20~71A
ATXF20~42C
ATXF20~42D
ATXF20~42E

RXF20~71A

RXF20~60B
RXF20~42C
RXF20~42D
RXF20~42E
ARXF20~71A
ARXF20~42C
ARXF20~42D
ARXF20~42E

Содержание Split Sensira R32

Страница 1: ...l Split Sensira R32 FTXF20 71A FTXF20 25B FTXF20 42C FTXF20 42D FTXF20 42E ATXF20 71A ATXF20 42C ATXF20 42D ATXF20 42E RXF20 71A RXF20 60B RXF20 42C RXF20 42D RXF20 42E ARXF20 71A ARXF20 42C ARXF20 42...

Страница 2: ...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 c...

Страница 3: ...els ARXF20 71A added Indoor unit models ATXF20A and ATXF50 71A added Technical data Wiring diagram Wiring diagrams for new models added Technical data Piping diagram Piping diagrams for new models add...

Страница 4: ...ping diagram Piping diagrams for new models added Compressor thermal protector Checking and repair procedures added Main PCB RXF20 42D and ARXF20 42D unit procedures added Outdoor unit fan motor RXF20...

Страница 5: ...oltage current sensor problem 27 2 5 17 H3 00 Outdoor unit Malfunction of high pressure switch 28 2 5 18 H6 00 Outdoor unit Malfunction of position detection sensor 29 2 5 19 H8 00 Outdoor unit Malfun...

Страница 6: ...control PCB 149 3 14 1 Checking procedures 149 3 14 2 Repair procedures 150 4 Third party components 153 4 1 Electrical circuit 153 4 1 1 Checking procedures 153 4 1 2 Repair procedures 154 4 2 Refrig...

Страница 7: ...ssible place at the product Instructions for 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 f...

Страница 8: ...utes and measure the voltage at the terminals 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...

Страница 9: ...d safe to work in Beware of spilled fluids 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 condu...

Страница 10: ...vered into the correct recovery cylinders WARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigeran...

Страница 11: ...he system with refrigerant Do NOT earth the 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 wi...

Страница 12: ...an oil and refrigerant sample MUST be taken 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...

Страница 13: ...d and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt Do NOT overfill the refrigerant cylinder confirm w...

Страница 14: ...air inlet or aluminium fins of the unit CAUTION 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...

Страница 15: ...emote controller to reset the error 2 3 To 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 P...

Страница 16: ...arts immediately after power is restored 2 5 Error based troubleshooting 2 5 1 A1 00 PCB abnormality Trigger Effect Reset The system CANNOT set the internal settings Unit will stop operating Power res...

Страница 17: ...above 65 C heating peak cut control To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check for objects near the indoor unit that may block the airflow...

Страница 18: ...motor See 3 6 Indoor unit fan motor 481 Possible cause Faulty indoor unit fan motor INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk...

Страница 19: ...se 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 6 E1 00 Outdoor unit PCB defect Trigger Effect R...

Страница 20: ...eat sink INFORMATION If all procedures listed 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...

Страница 21: ...OT stop operating Automatic reset if the unit 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...

Страница 22: ...ror code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the discharge pipe thermistor See 3 13 Thermistors 4140 Possible cause Faulty discharge pipe therm...

Страница 23: ...user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the outdoor unit fan motor See 3 9 Outdoor unit fan motor 4114 Poss...

Страница 24: ...functioning within operation range Unit will 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 i...

Страница 25: ...ia user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant c...

Страница 26: ...stop valve in the refrigerant circuit 3 Perform a check of the heat exchanger thermistor See 3 13 Thermistors 4140 Possible cause Faulty heat exchanger thermistor 4 Perform a check of the expansion v...

Страница 27: ...ence of non condensables and or humidity in the refrigerant circuit See 4 2 Refrigerant circuit 4155 Possible cause Non condensables and or humidity in the refrigerant circuit 4 Check if the refrigera...

Страница 28: ...ct surface 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 proble...

Страница 29: ...compressor power supply cable 2 Perform a check of the main PCB See 3 8 Main PCB 489 Possible cause Faulty main PCB 3 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant...

Страница 30: ...2 Perform a check of the compressor See 3 2 Compressor 454 Possible cause Faulty compressor or miswiring of the compressor power supply cable 3 Perform a check of the reactor See 3 11 Reactor 4135 Po...

Страница 31: ...ORMATION If all procedures listed above have 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 Rese...

Страница 32: ...r heat exchanger See 5 Maintenance 4165 Possible cause Dirty outdoor heat exchanger INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk...

Страница 33: ...current is detected by checking the current 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 perf...

Страница 34: ...n the PCB or refrigerant piping contact surface of the heat sink Adjust if needed Possible cause Thermal interface grease NOT applied properly on the heat sink INFORMATION If all procedures listed abo...

Страница 35: ...rigerant circuit See 4 2 Refrigerant circuit 4155 Possible cause Non condensables and or humidity in the refrigerant circuit 6 Perform a check of the compressor See 3 2 Compressor 454 Possible cause F...

Страница 36: ...a check of the indoor unit main PCB See 3 7 Indoor unit main PCB 484 Possible cause Faulty indoor unit main PCB INFORMATION If all procedures listed above have been performed and the problem is still...

Страница 37: ...ce 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 sti...

Страница 38: ...25B A F TXF20 42C A F TXF20 42D A F TXF20 42E A RXF20 71A RXF20 60B A RXF20 42C A RXF20 42D A RXF20 42E Split Sensira R32 ESIE18 12G 2023 01 INFORMATION If all procedures listed above have been perfor...

Страница 39: ...re 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 may be an error code activating the protection device Diagno...

Страница 40: ...ength within specified range Field piping is 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 Inco...

Страница 41: ...general vibration prevention where needed If 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...

Страница 42: ...5 m Visual inspection Does air enter the refrigerant system Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Is the refrigerant overcharged Conduct refrigerant...

Страница 43: ...tion Is there clogging before or after the expansion valve capillary Check if there is a temperature difference before and after expansion valve capillary Check if the main valve unit of expansion val...

Страница 44: ...voltage 10 supplied Check the insulation of 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...

Страница 45: ...rcharge Air in the system Water in the system 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 coi...

Страница 46: ...ite Dirty site Oil mist Check installation conditions Dirty heat exchanger Air filter Dirty air filter Fan motor Defective fan motor 2 6 11 Swing flap does not operate Symptom Check Detail Swing flap...

Страница 47: ...RNING SCALDING The coil gets hot while energized Wait 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 val...

Страница 48: ...on of the PCB Result The measured voltage MUST be Class Voltage Class 20 42 12 V DC Class 50 71 220 240 V AC INFORMATION Actual energize voltage is 310 V DC 12 V DC is used to keep the coil energized...

Страница 49: ...e measured voltage correct Action Yes Perform a position check of the 4 way valve see 3 1 1 Checking procedures 447 No Perform a check the main PCB see 3 8 Main PCB 489 To perform a position check of...

Страница 50: ...or and continue with the next procedure No Replace the body of the 4 way valve see 3 1 2 Repair procedures 451 When outdoor temperature does not allow the unit to run in cooling or heating mode INFORM...

Страница 51: ...the 4 way valve coil 1 Remove the screw and remove the 4 way valve coil from the 4 way valve body c a b a Screw b 4 way valve coil c 4 way valve body 2 Cut all tie straps that fix the 4 way valve coi...

Страница 52: ...tall 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 3 1 2 Repair procedures 451 To install the...

Страница 53: ...efrigerant to the refrigerant circuit see 4 2 2 Repair procedures 4159 To install the 4 way valve coil 1 Install the 4 way valve coil on the 4 way valve body c a b a Screw b 4 way valve coil c 4 way v...

Страница 54: ...rd the current in 1 of the U V W wires at compressor start up If mechanical lock is present logged current will drastically increase to a peak value and the unit will trigger an error INFORMATION If a...

Страница 55: ...5 Check the compressor dampers for any damage a a a Damper INFORMATION The compressor dampers may look different Compressor dampers are in a good condition Action Yes Perform an electrical check of t...

Страница 56: ...ston connectors on the compressor wire terminals 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 mot...

Страница 57: ...rminal 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 th...

Страница 58: ...orm an electrical check of the compressor see 3 2 1 Checking procedures 454 Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Before pr...

Страница 59: ...tinue with the next procedure No Replace the compressor see 3 2 2 Repair procedures 459 3 2 2 Repair procedures To remove the compressor Prerequisite Stop the unit operation via the user interface Pre...

Страница 60: ...nectors on the compressor wire terminals to allow correct connection during installation V U W U Wire terminal U V Wire terminal V W Wire terminal W 4 If applicable remove the screw and disconnect the...

Страница 61: ...en 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 heati...

Страница 62: ...pipes of the new compressor CAUTION The oil in the compressor is hygroscopic Therefore remove the caps from the compressor pipes as late as possible 5 Install the compressor on the correct location on...

Страница 63: ...es and the oil inside the compressor pipes will damage or destroy the compressor 9 After soldering is done stop the nitrogen supply after the component has cooled down 10 Install the compressor therma...

Страница 64: ...2 Repair procedures 459 16 Perform a pressure test see 4 2 1 Checking procedures 4155 17 Add refrigerant to the refrigerant circuit see 4 2 2 Repair procedures 4159 Is the problem solved Action Yes N...

Страница 65: ...ectors from the compressor thermal protection INFORMATION Make sure that the wiring between the compressor thermal protector and the connector on the PCB is properly connected and NOT damaged check co...

Страница 66: ...at the correct temperature Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Replace the compressor thermal protector see 3 3 2 Repair procedures 4...

Страница 67: ...tors from the compressor thermal protector 4 Separate the compressor thermal protector and the compressor thermal protector bracket a b a Compressor thermal protector b Compressor thermal protector br...

Страница 68: ...r b Faston connector c Bracket 3 Install the compressor thermal protector in the compressor housing 4 Install the wire terminals cover on the compressor a a Compressor wire terminals cover 5 Install t...

Страница 69: ...de the expansion valve magnet over the expansion valve body and gently rotate the magnet clockwise counterclockwise to manually close open the expansion valve Listen to check if the valve is closing o...

Страница 70: ...4 5 a 1 2 3 4 5 1 2 5 3 4 a Connector Connector pin 1 6 Connector pin 2 6 Connector pin 3 6 Connector pin 4 6 a a Connector 3 Check the insulation resistance of the coil by measuring the resistance b...

Страница 71: ...valve 6 Wait for the PCB to command the expansion valve to open when closed or to close when open pulse output to expansion valve visible on service monitoring tool INFORMATION If the PCB does NOT com...

Страница 72: ...the troubleshooting of the specific error and continue with the next procedure 3 4 2 Repair procedures To remove the expansion valve coil Prerequisite Stop the unit operation via the user interface P...

Страница 73: ...ix the expansion valve coil harness 5 Disconnect the expansion valve coil connector from the main PCB 6 To install the expansion valve coil see 3 4 2 Repair procedures 472 To remove the expansion valv...

Страница 74: ...t 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 acet...

Страница 75: ...s cooled down a b c a Putty b Expansion valve pipe c Expansion valve body a b a Expansion valve pipe b Expansion valve body INFORMATION The expansion valve and coil can have a different configuration...

Страница 76: ...priate 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 4 Fix t...

Страница 77: ...B 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 required No Ret...

Страница 78: ...and the appropriate PCB If NO continuity is measured repair as needed see 6 2 Wiring diagram 4169 For A RXF20 35A RXF20 25B A RXF20 42C and A RXF42D units ONLY Make sure that the compressor thermal pr...

Страница 79: ...rocedure No Replace the high pressure switch see 3 5 2 Repair procedures 479 3 5 2 Repair procedures To remove the high pressure switch Prerequisite Stop the unit operation via the user interface Prer...

Страница 80: ...the high pressure switch see 3 5 2 Repair procedures 479 To install the high pressure switch 1 Remove the plug or cap from the refrigerant piping and make sure it is clean 2 Install the high pressure...

Страница 81: ...Check that the fan is correctly installed on the DC fan motor Correct as needed 3 Manually rotate the fan and check the friction of the DC fan motor shaft bearing Is the DC fan motor shaft friction n...

Страница 82: ...the DC fan motor connector from the appropriate PCB 3 Measure the resistance between the pins 1 2 1 3 and 2 3 of the DC fan motor connector Result All measurements MUST be 70 9 78 3 DC fan motor measu...

Страница 83: ...3 6 2 Repair procedures 482 To install the DC fan motor assembly 1 Install the indoor unit fan motor in its correct location on the fan 2 Install the rubber in front of the fan motor 3 Click the indo...

Страница 84: ...work 4124 1 Turn ON the power of the unit 2 Measure the voltage between the black and white wires on the PCB The measured voltage MUST be 230 V AC a b a Black wire b White wire Is the measured voltag...

Страница 85: ...lace the indoor unit main PCB see 3 7 2 Repair procedures 486 To check the wiring of the indoor unit main PCB Prerequisite First perform all earlier checks of the indoor unit main PCB see 3 7 1 Checki...

Страница 86: ...Return to the troubleshooting of the specific error and continue with the next procedure 3 7 2 Repair procedures To correct the wiring from the indoor unit power supply terminal to the indoor unit ma...

Страница 87: ...CB b PCB support 3 Remove the indoor unit main PCB from the indoor unit 4 To install the indoor unit main PCB see 3 7 2 Repair procedures 486 To install the indoor unit main PCB 1 Install the indoor u...

Страница 88: ...e of the indoor unit main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 10 Plat...

Страница 89: ...orm a power check of the main PCB A RXF20 35A RXF20 25B A RXF20 42C A RXF42D units Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prer...

Страница 90: ...ON the power of the unit 2 Measure the voltage between pins 1 2 of the connector S10 on the main PCB Result The measured voltage MUST be 230 V AC a a Connector S10 Is the measured voltage on the PCB c...

Страница 91: ...P 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 intervals 1 second ON 1 second OFF Action Yes Return to...

Страница 92: ...it breaker 2 Check that all wires are properly connected and that all connectors are fully plugged in 3 Check that no connectors or wires are damaged 4 Check that the wiring corresponds with the wirin...

Страница 93: ...on CAUTION Make sure that the Faston connectors are disconnected from the compressor wire terminals and connected to the Inverter Analyzer before starting the power transistor check operation If NOT p...

Страница 94: ...se of the main PCB A RXF20 35A RXF20 25B A RXF20 42C A RXF42D units Prerequisite First perform all earlier main PCB checks see Checking procedures 489 1 Measure the continuity of the fuse If no contin...

Страница 95: ...ures 4101 No Return to Checking procedures 489 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 check...

Страница 96: ...ocedures 489 No Replace the main PCB see Repair procedures 4101 To perform a diode module check 1 First check the rectifier voltage of the main PCB see Checking procedures 489 INFORMATION If the recti...

Страница 97: ...t b V AC in c V AC in d V DC out d c b a A A A RXF20 35D A RXF20 42E 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...

Страница 98: ...quisite 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...

Страница 99: ...RMATION 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 VDC Com Ref VDC Com Ref U DC 0 501 V DC U O L V DC 0 501 V...

Страница 100: ...c A A A RXF20 35A RXF20 25B A RXF20 42C A RXF42D units a U b V c W d DC e DC e d a b c A A A RXF20 35D A RXF20 42E units a U b V c W d DC e DC INFORMATION When measuring on the front of the main PCB...

Страница 101: ...he main power supply terminal to the main PCB A RXF20 35D A RXF20 42E units Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove th...

Страница 102: ...lug 5 Disconnect the Faston connectors from the reactor 6 Remove the screw and remove the ground wiring from the switch box 7 Remove the screws from the main PCB 8 Carefully pull the main PCB from the...

Страница 103: ...2 Install the main PCB in the correct location on the PCB supports d d e e d a a b c a Power supply wiring b Red wire c Ground wire d Screw e PCB support 3 Install and tighten the screws 4 Install th...

Страница 104: ...screws 4 Connect all connectors and Faston connectors to the main PCB INFORMATION Use the wiring diagram and connection diagram for correct installation of the connectors see 6 2 Wiring diagram 4169 I...

Страница 105: ...install a fuse on the main PCB A RXF20 35A RXF20 25B A RXF20 42C A RXF42D units WARNING For continued protection against risk of fire replace only with same type and rating of fuse 1 Install the fuse...

Страница 106: ...4124 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 on the P...

Страница 107: ...ed Prerequisite First perform all earlier main PCB checks see Checking procedures 4106 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part...

Страница 108: ...No further actions required No Return to Checking procedures 4106 of the PCB and continue with the next procedure To check the fuse of the main PCB Prerequisite First perform all earlier main PCB chec...

Страница 109: ...Yes Perform a check of the power module see Checking procedures 4106 No Replace the main PCB see Repair procedures 4111 To perform a diode module check 1 First check the rectifier voltage of the main...

Страница 110: ...51 0 52 V c d O L c a 0 51 0 52 V a c O L 4 If the diode module is NOT OK replace the main PCB see Repair procedures 4111 To perform a power module check Prerequisite First check the rectifier voltage...

Страница 111: ...01 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 Are the test results OK Action Yes Power module is OK Return to Checking procedures 4106 of the ma...

Страница 112: ...iring e Ferrite core ground wiring f Connector X12A g Compressor connector h Tie strap compressor harness i Ferrite core compressor harness j Screw k Main PCB 4 Remove the screw and remove the ground...

Страница 113: ...the ferrite core for compressor harness to the switch box fixation plug 5 Install new tie straps to fix the compressor harness to the switch box 6 Install the ground wiring on the switch box and fix u...

Страница 114: ...tion Yes Replace the propeller fan blade assembly see Repair procedures 4117 No Perform a mechanical check of the DC fan motor assembly see Checking procedures 4114 To perform a mechanical check of th...

Страница 115: ...e with the next step 5 Turn OFF the unit via the user interface 6 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been t...

Страница 116: ...DC fan motor connector pins 10 12 Result 4 pulses MUST be measured 13 Repeat the previous step and measure the voltage on the DC fan motor connector pins 10 13 Result 4 pulses MUST be measured Pulses...

Страница 117: ...ller fan blade does NOT rotate as this could affect resistance measurements 9 Set the Megger voltage to 500 V DC or 1000 V DC 10 Measure the insulation resistance for the motor terminals Measurements...

Страница 118: ...ch box 6 Slightly bend the harness retainers to detach the DC fan motor harness 7 Remove the 4 screws that fix the DC fan motor assembly 8 Remove the DC fan motor assembly from the unit 9 To install t...

Страница 119: ...xt procedure 3 9 2 Class 50 71 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 Prere...

Страница 120: ...rmal Action Yes Perform an electrical check of the DC fan motor assembly see Checking procedures 4119 No Replace the DC fan motor assembly see Repair procedures 4122 To perform an electrical check of...

Страница 121: ...t step No Replace the DC fan motor see Repair procedures 4122 9 Turn ON the power of the unit 10 With the DC fan motor connector S70 disconnected from the main PCB measure the voltage on the connector...

Страница 122: ...check of the main PCB see Checking procedures 489 No Replace the DC fan motor see Repair procedures 4122 Problem solved After all checking procedures listed above have been performed Is the problem so...

Страница 123: ...rs to detach the DC fan motor harness 7 Remove the 4 screws that fix the DC fan motor assembly 8 Remove the DC fan motor assembly from the unit 9 To install the DC fan motor assembly see Repair proced...

Страница 124: ...ESIE18 12G 2023 01 a b a Nut b Propeller fan blade assembly Is the problem solved Action Yes No further actions required No Return to Checking procedures 4119 of the outdoor unit fan motor and contin...

Страница 125: ...dure 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 ELECTRO...

Страница 126: ...the front plate To remove the compressor sound insulation INFORMATION This procedure is just an example and may differ on some details for your actual unit Prerequisite Remove the front plate see 3 10...

Страница 127: ...42E Split Sensira R32 ESIE18 12G 2023 01 a b a Insulation b Main PCB 2 Disconnect all connectors from the main PCB 3 Disconnect the electrical power supply wiring from the wire terminals f a d c b e...

Страница 128: ...side plate assembly 7 Cut the cable tie a b a Cable tie b Switch box 8 Lift and remove the switch box from the outdoor unit 9 To install the switch box see 3 10 Plate work 4124 To install the switch b...

Страница 129: ...ct 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 INFORMATION Use the wiring diagram and connect...

Страница 130: ...RXF20 60B A RXF20 42C A RXF20 42D A RXF20 42E Split Sensira R32 ESIE18 12G 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...

Страница 131: ...4 2 Remove the front panel by sliding it to 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...

Страница 132: ...of the front grille push it up and then toward 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 horizont...

Страница 133: ...it operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 10 Plate work 4124 1 Disconnect the power supply wiring from...

Страница 134: ...aster motor if equipped inside the switch box 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 C...

Страница 135: ...actor for any damage or burnt out components If any damage is found replace the reactor see 3 11 2 Repair procedures 4137 Class 20 42 units 1 Check the connections of the reactor on the main PCB and c...

Страница 136: ...actor 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...

Страница 137: ...2 Repair procedures For class 20 42 units See procedures below For class 50 71 units As the reactors are part of the main PCB replace the complete main PCB See Repair procedures 4101 To remove the re...

Страница 138: ...crews that fix the reactor to the switch box 3 Connect the Faston connectors to the reactor Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specifi...

Страница 139: ...2 5 3 4 3 5 4 5 Swing flap motor resistance measurements are correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Replace the swing flap motor...

Страница 140: ...coupling piece a b c a Cover b Screw c Swing flap motor 2 Install and tighten the screw to fix the swing flap motor 3 Connect the connector to the swing flap motor 4 Install the cover 5 Install both...

Страница 141: ...ures 4144 To perform an electrical check of the specific thermistor 1 First perform a mechanical check of the thermistor see Checking procedures 4140 2 Locate the thermistor INFORMATION Remove the the...

Страница 142: ...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 91 6 65 6 41 6 65 6 41...

Страница 143: ...thermistors If the measured resistance value matches the resistance determined through the measured temperature but the temperature for the corresponding thermistor is NOT correct on the user interfa...

Страница 144: ...elow Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 10 Plate work 4124 1 Disconnect...

Страница 145: ...opriate PCB and remove the thermistor 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 proc...

Страница 146: ...the display PCB in the correct location on 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 ther...

Страница 147: ...onnect 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 pi...

Страница 148: ...91 2 82 2 72 2 64 2 55 10 111 99 20 25 01 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 3...

Страница 149: ...sistance of 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 Repl...

Страница 150: ...4150 No Perform a check of the indoor unit main PCB see 3 7 1 Checking procedures 484 5 As there are no further check procedures for this component perform a check of the indoor unit main PCB to check...

Страница 151: ...Connect the harness to the wifi control PCB 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 pro...

Страница 152: ...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 t...

Страница 153: ...ST be 230 V AC 10 5 Unbalance between the phases 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 nex...

Страница 154: ...amaged 3 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4169 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No...

Страница 155: ...noise filter fuse 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 4 2 Refrigerant circuit 4 2 1...

Страница 156: ...peration the pressure is high or very low the refrigerant circuit might be clogged 7 On the refrigerant liquid piping between the indoor unit heat exchanger and the outdoor unit heat exchanger coil us...

Страница 157: ...lowest level Subcooling degree becomes higher The temperature of liquid connection piping becomes lower High pressure gradually rises with increasing operating frequency Low pressure rises with loweri...

Страница 158: ...lightly increases due to the capacity control High pressure decreases due to compressor capacity decreasing Operating frequency comes to the lowest level Heating Frequency Low pressure High pressure P...

Страница 159: ...t circuit Action Yes To replace the refrigerant see 4 2 2 Repair procedures 4159 No Return to the troubleshooting of the specific error and continue with the next procedure To perform a pressure test...

Страница 160: ...ds to be repaired See also Repair information 4161 for more details Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue wit...

Страница 161: ...quired Make 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 cor...

Страница 162: ...vacuum is reached Close the gas stop valve 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...

Страница 163: ...n indication of the presence of moisture in 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 mention...

Страница 164: ...F20 42E Split Sensira R32 ESIE18 12G 2023 01 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...

Страница 165: ...1 Straighten the hair fins 2 Clear the outdoor 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 excha...

Страница 166: ...ents Rinse the heat exchanger and drain pan with water after the cleaning process CAUTION Rinse out the cleaning agent until there is NO cleaning agent left Otherwise the corrosion of heat exchanger a...

Страница 167: ...2 ESIE18 12G 2023 01 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 f...

Страница 168: ...Detailed information setting mode 6 1 1 Detailed information setting mode Indoor unit See the installer reference guide on business portal for more information 6 1 2 Detailed information setting mode...

Страница 169: ...20 42D 1 Wiring diagram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote contro...

Страница 170: ...E18 12G 2023 01 3 Legend BZ Buzzer FG Frame ground FU1 Fuse H Harness IPM Intelligent power module LED 1 LED 2 Light emitting diode M1F Fan motor M S Swing flap motor MR Magnetic relay PCB1 PCB2 PCB3...

Страница 171: ...Transmission circuit Wireless remote control Wireless remote control Horizontal Horizontal Vertical Vertical 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective earth...

Страница 172: ...42E Split Sensira R32 ESIE18 12G 2023 01 R1T R2T Thermistor BS1 S1W Operation switch R2V V2 Varistor X1M Terminal strip Z C Ferrite core IPM Intelligent power module H P LED Pilot lamp V1R DB301 Diod...

Страница 173: ...or Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote control Wireless remote control Horizontal Horizontal Shield plate Shield plate 2 Notes Eng...

Страница 174: ...motor MR Magnetic relay R1T Room thermistor R2T Suction pipe thermistor S1 S800 Connector S1W Operation switch V1 Varistor X1M Terminal strip Z C Ferrite core Wiring diagram 3D142366 A2P BLK 1 1 S800...

Страница 175: ...elow RXF20 35A RXF20 25B RXF20 42C RXF42D ARXF20 35A ARXF20 42C ARXF42D 1 Wiring diagram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge D...

Страница 176: ...or M1C Compressor 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 arre...

Страница 177: ...g diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Note Note Connection X1M Main terminal Field supply PCB Protective earth Earth Field wire NO...

Страница 178: ...strip Y1S Reversing solenoid valve coil PTC1 Thermistor Y1E Electronic expansion valve coil Z C Ferrite core Z F Noise filter Wiring diagram 3D134368 BLU RED 5 1 WHT YLW ORG M1F MS 3 RED YLW BLU 3 15...

Страница 179: ...r Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective earth Earth Field wire NOTES BLK Black WHT White B...

Страница 180: ...SIE18 12G 2023 01 N Neutral PAM Pulse amplitude modulation PCB Printed circuit board PS Switching power supply Q1L Overload protector R1T R2T R3T Thermistor S2 S90 Terminal connector SA1 Surge arresto...

Страница 181: ...utdoor Outdoor Condenser Condenser To indoor unit To indoor unit Power supply Power supply Discharge Discharge 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective eart...

Страница 182: ...tic relay N Neutral N 4 N 5 Number of passes through ferrite core PAM Pulse amplitude modulation PCB Printed circuit board PS Switching power supply Q1L Overload protector R1T R2T R3T Thermistor S1PH...

Страница 183: ...g diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective earth Earth Field wire NOTES BLK Bl...

Страница 184: ...amplitude modulation PCB Printed circuit board PS Switching power supply Q1L Overload protector R1T R2T R3T Thermistor S1PH High pressure switch S2 S90 Terminal connector SA1 Surge arrestor V1 V2 V3 V...

Страница 185: ...ndoor unit FTXF20 35A 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 moto...

Страница 186: ...B FTXF20 35C FTXF20 35D 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 mo...

Страница 187: ...E 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 hea...

Страница 188: ...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 e...

Страница 189: ...TXF42D ATXF42E a b c d R2T M1F 6 4CuT 6 4CuT 9 5CuT 9 5CuT 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 T...

Страница 190: ...2 7CuT 12 7CuT 6 4CuT a b c d R2T M1F 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 Therm...

Страница 191: ...tion 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 Thermis...

Страница 192: ...PH HPS a Field piping 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 Accumula...

Страница 193: ...uT a Field piping 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...

Страница 194: ...a Field piping 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 M...

Страница 195: ...m 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 Compressor M1F Fan R1T Thermistor outdoor air R2T...

Страница 196: ...lare connection c Stop valve liquid d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter j Heat exchanger j Accumulator M1C Compressor M1F Fan R1T Thermistor outdoor air R2T The...

Страница 197: ...id d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter i Heat exchanger j Accumulator M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T Thermi...

Страница 198: ...R1T R2T R3T Y1E Y1S e e e i j S1PH M1F a 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 Filt...

Страница 199: ...1A RXF20 60B A RXF20 42C A RXF20 42D A RXF20 42E Split Sensira R32 ESIE18 12G 2023 01 6 4 Component overview 6 4 1 Component overview Indoor unit a b c d e f h g a Heat exchanger b Heat exchanger ther...

Страница 200: ...w Outdoor unit i j h k l n m o p q a b c d e f g h m m a Air thermistor R1T j Service PCB b Heat exchanger k High pressure switch NOT for RXF50A A RXF20 35D and A RXF20 42E c Expansion valve l Dischar...

Страница 201: ...vice manual 201 A F TXF20 71A FTXF20 25B A F TXF20 42C A F TXF20 42D A F TXF20 42E A RXF20 71A RXF20 60B A RXF20 42C A RXF20 42D A RXF20 42E Split Sensira R32 ESIE18 12G 2023 01 6 5 Field information...

Страница 202: ...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...

Страница 203: ...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...

Страница 204: ...ools 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 supp...

Страница 205: ...is unit order one of the following remote controllers and perform as described below ARC480A11 ARC480A53 ARC466A33 ARC466A58 ARC466A67 Using remote controller ARC480A11 or ARC480A53 1 Press and simult...

Страница 206: ...or office with people 1 Cut the jumper J6 on the circuit board using nippers or a similar tool to expand the operation range of the outdoor unit down to 15 C INFORMATION The outdoor unit will stop ope...

Страница 207: ......

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