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SERVICE MANUAL

Inverter

:DOO0RXQWHG

Single Split

SM-5WMY-A1

R410A

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Содержание FTXB50BV1B

Страница 1: ...SERVICE MANUAL Inverter DOO 0RXQWHG Single Split SM 5WMY A1 R410A...

Страница 2: ...6 2 9 Minimum Off Time Control 16 2 10 Auto Restart 17 2 11 Auto Random Restart 17 2 12 Four Way Valve Control 17 2 13 Outdoor Fan Control 18 2 14 Rotation Regulating Functions 18 2 15 Defrost Cycle 2...

Страница 3: ...mbling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair o...

Страница 4: ...el and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When reloc...

Страница 5: ...ent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When r...

Страница 6: ...easure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit...

Страница 7: ...0 60BV1B x x x x FTXN25 35 50 60MV1 x x x x FTXN25 35 50 60MV1B x x x x FTXN25 35 50 60MV1B9 x x x x ATXN25 35 50 60MV1B x x x x 1 1 2 Outdoor Unit Nomenclature Classification Refrigerant control Fin...

Страница 8: ...TXN25 35L M 1 2 1 1 Main PCB Item Indication on PCB Description 1 A1 Connector for fan motor 2 A2 Connector for swing motor 3 A3 Connector for fan motor feedback 4 A4 Fuse 5 A5 Varistor 6 A6 Connector...

Страница 9: ...er Single Split 3 1 2 1 2 Signal board Item Indication on PCB Description 1 A1 Operation ON OFF switch 2 A2 Led for sleep red 3 A3 Led for timer yellow 4 A4 Led for operation 5 A5 Connector for contro...

Страница 10: ...N50 60L M 1 2 2 1 Main PCB Item Indication on PCB Description 1 A1 Connector for fan motor 2 A2 Connector for swing motor 3 A3 Connector for wired panel 4 A4 Connector for Signal Receiver PCB 5 A5 Con...

Страница 11: ...er Single Split 5 1 2 2 2 Signal board Item Indication on PCB Description 1 A1 Connector for Control PCB 2 A2 LED for operation 3 A3 LED for timer yellow 4 A4 LED for sleep red 5 A5 Operation ON OFF s...

Страница 12: ...Inverter Single Split 6 1 2 3 Outdoor PCB ARXN RXN25 35L M 1 2 3 1 Filter PCB Item Indication on PCB Description 1 S11 Connector for indoor PCB 2 FU3 Fuse 20A 3 V2 V3 Varistor...

Страница 13: ...tronic expansion valve coil 3 S40 Connector for overload protector 4 S70 Connector for fan motor 5 S80 Connector for four way valve coil 6 S90 Connector for thermistors outdoor temperature outdoor hea...

Страница 14: ...on on PCB Description 1 S11 Connector for S10 on main PCB 2 HL1 HN1 S Connector for terminal board 3 E1 E2 Terminal for earth wire 4 HL2 HN2 Connector for HL3 HN3 on main PCB 5 HL4 HN4 Connector for S...

Страница 15: ...lve coil 4 S40 Connector for overload protector 5 S50 Connector for magnetic relay 6 S70 Connector for fan motor 7 S80 Connector for four way valve coil 8 S90 Connector for thermistors outdoor tempera...

Страница 16: ...ctor for IPM PCB 2 A2 Connector for heat sink thermistor 3 A3 Connector for thermistors outdoor air heat exchanger discharge pipe 4 A4 Connector for electronic expansion valve coil 5 A5 A6 Connector f...

Страница 17: ...ngle Split 11 1 2 5 2 IPM board Item Indication on PCB Description 1 A1 A2 A3 Connector to compressor 1 2 5 3 Display board Item Indication on PCB Description 1 A1 Connector to control PCB 2 A2 7 segm...

Страница 18: ...tion Model Max total piping length m Max height difference m Pre charge for up to piping length m Additional charge g m ARXN RXN25M 20 10 7 5 20 ARXN RXN35M 20 10 7 5 20 ARXN RXN50M RXB50B RX50CG 30 1...

Страница 19: ...ng Mode Operation The system has 5 operating modes The mode selection is done from indoor using handset The operating modes are Cool Heat Fan Auto Dry 2 2 1 Cooling Mode When Tr Ts 1 5 C Compressor In...

Страница 20: ...Fan speed will maintain same as during fan mode 2 4 Auto Mode Automatic Cooling Heating Function When the automatic operation is selected with the remote controller the microcomputer automatically det...

Страница 21: ...sleep operation operation OFF signal run sleep operation 1hr 1hr shift 0 5 C shift 1 0 C shift 1 0 C shift 2 0 C target temperature COOL or DRY target temperature HEAT no offset on target temperature...

Страница 22: ...Valve EXV control Outdoor coil Used for defrost control Also used for inverter current protection control in Series II Outdoor air Used for defrost outdoor fan speed control Also used for overall cur...

Страница 23: ...the auto random restart function kindly cut off the jumper J_AUTO as highlighted in attachment Please be informed that after disable auto random restart unit is not able to restart with last state mem...

Страница 24: ...Target rotation Defrost control for heat pump model only 2 14 1 Starting Rotation Starting Control To avoid excessive oil discharge from compressor or to promote oil lubrication during startup To prev...

Страница 25: ...ference from the previously calculated rotation I control if the operating frequency is not changed more than a certain fixed time If T is small lower frequency If T is large increase frequency 2 14 5...

Страница 26: ...more than 180s Compressor will stop OD fan stop after 30s and indoor fan can only run at lowest fan speed The unit can only be restarted after 3 minutes When the indoor coil temperature 13 C the compr...

Страница 27: ...protection is activated when the compressor discharge temperature 110 C The compressor will stop and considered trip If the compressor discharge temperature 90 C the compressor frequency will be rese...

Страница 28: ...N25 35L M 14 0A ARXN RXN50 60_L 12 0A ARXN RXN50 60M RXB50 60B RX50 60CGXV1 16 5A When the input current for running compressor exceeds L2 running frequency will be reduced by 1 step If current still...

Страница 29: ...e 1 Hold down ON TIMER CANCEL or OFF TIMER CANCEL for 5 seconds until indication flashes on the handset temperature display section 2 Then press the same button repeatedly A series of error code will...

Страница 30: ...Repeat the normal step to retrieve error by using remote controller step Holding TIMER CANCEL 9 By using this method the error shown will be Last State Error Previous error in this unit 3 1 3 Error Co...

Страница 31: ...nning number shows the parameter number Then the 7 segment will flash again showing the parameter measurement When the 7 segment display is left untouched for 5 min the display will light off Dim Para...

Страница 32: ...E8 AC INPUT OVER CURRENT O O 12 EA 4 WAY VALVE ABNORMALITY O O 13 F3 DISCHARGE PIPE OVERHEAT O O 14 F6 HEAT EXCHANGER OVERHEAT O O 15 H0 COMPRESSOR SENSOR SYSTEM ABNORMAL O 16 H6 POSITION SENSOR ABNO...

Страница 33: ...door PCB 2 Faulty connector connection at indoor Troubleshooting No Any sign of loose or abnormal Yes Turn off unit Check indoor PCB connector conditions including PCB to terminal block and all PCB wi...

Страница 34: ...short circuit Does it conform to the thermistor resistance table Yes No Check indoor air flow Check intake air filter Check fan blower condition Change indoor thermistor Check the dust accumulate ind...

Страница 35: ...Turn off power supply and rotate fan by hand No Connect correctly Change fan motor C4 Description INDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY Supposed Cause 1 Thermistor connector faulty 2 Indoor PC...

Страница 36: ...Cause 1 Thermistor connector faulty 2 Indoor PCB faulty Troubleshooting Yes Normal No Yes Normal Refer thermistor resistance table Page 60 item 6 1 Replace PCB Check thermistor resistance value Check...

Страница 37: ...Momentary voltage drop Momentary power failure 2 Damage of EEPROM 3 Faulty outdoor unit PCB 4 Broken hardness between PCB Troubleshooting Error still occur No Yes Grounded Yes Turn on the power again...

Страница 38: ...e electronic expansion or the coil Discharge pipe thermistor disconnected No Yes Insert thermistor in position Check resistance of 2 terminals connector S40 Malfunction Resistance between 2 WHUPLQDOV...

Страница 39: ...er page 61 item 6 3 5HIHU SDJH LWHP Resistance IROORZ VSHF No Yes Compressor stop without UXQQLQJ No Yes Change outdoor PCB Change compressor Turn off unit Disconnect compressor wire hardness U V W an...

Страница 40: ...valve coil Replace it as required Emergency stop without compressor running No Yes Replace the compressor Yes Replace the compressor System shut down after errors repeated several times No Turn off po...

Страница 41: ...Troubleshooting Turn on the power Check rotation pulse input on outdoor unit PCB Fan rotates smoothly No Yes Turn off power and reconnect connector Fan motor connector disconnected No Yes Foreign mat...

Страница 42: ...Change outdoor Control Box Check with the inverter checker Check outdoor fan motor outdoor ambient temperature refrigerant charge level Turn off the power and disconnect the harness U V and W No Refer...

Страница 43: ...ur way valve coil Replace the defective thermistor s Malfunction Replace the outdoor unit PCB Reconnect the thermistor s Reconnect the harness Resistance between harnesses No Yes Any thermistor discon...

Страница 44: ...tor Outdoor temperature thermistor Functioning Functioning Replace the defective thermistor s Check the refrigerant line Malfunction Refrigerant shortage Four way valve Water mixed Stop valve Function...

Страница 45: ...tallation condition Functioning Functioning Functioning Functioning Malfunction Change the installation location or direction Clean the outdoor heat exchanger Replace the outdoor fan motor Reconnect t...

Страница 46: ...arness 2 Outdoor unit PCB defective 3 Defective compressor Troubleshooting Disconnect the reactor wire and measure resistance between terminal Any abnormal Yes No Check reactor connection Check reacto...

Страница 47: ...Yes No problem Keep on running No Replace the harness Replace the PCB Check the harness S30 H0 ARXN RXN50 60L M Description COMPRESSOR SENSOR SYSTEM ABNORMAL Supposed Cause 1 Broken and disconnected h...

Страница 48: ...losed 5 Input voltage out of specification Troubleshooting Normal Compressor harness connected as specified No Yes Check for short circuit Check with inverter checker Check the electrolytic capacitor...

Страница 49: ...sses connected as specified No Yes Check for short circuit Check with inverter checker Check the electrolytic capacitor voltage Turn off the power Disconnect the harness U V and W Replace the outdoor...

Страница 50: ...he power Check the electrolytic capacitor voltage Any LED off No Correct the power supply or replace the outdoor unit PCB Reconnect the electrical components or compressor harnesses as specified Elect...

Страница 51: ...PCB defective Troubleshooting Connection correct No Yes Change outdoor PCB Restart the system and check connector between main board and IPM board Check compressor harness connection Does it connect p...

Страница 52: ...ting No Yes Turn on the power again Check the indoor heat exchanger thermistor resistance value in the heating operation Check the thermistor resistance value Normal J3 error the discharge pipe temper...

Страница 53: ...at sink thermistor resistance Change heat sink or check outdoor fan condition Turn off the unit and turn on back after 20 mins Resistance normal Heat sink temperature A C No Yes Outdoor fan functionin...

Страница 54: ...em Has the PCB been replaced Above A C Check the radiation fin temperature Check the outdoor fan Malfunction No Functioning Radiation fin dirty Yes Check if silicon grease is applied properly on the r...

Страница 55: ...ion condition Check with the inverter analyzer Check the power supply voltage Turn off the power and turn it on again to start the system See if the same error occurs No Turn off the power and reconne...

Страница 56: ...thermistor Put the thermistor back to actual position Check the indoor coil outdoor coil and discharge pipe thermistor resistance Thermistor in actual position Resistance normal EXV functioning Any l...

Страница 57: ...bleshooting Is the voltage fluctuation within 10 from the rated value No Yes Yes Check the power supply voltage Turn on the power Check the connection of the compressor harness Yes Disturbance factors...

Страница 58: ...the indoor unit outdoor unit connection wires No Check the LED A on the outdoor unit PCB Check the power supply waveform Check the voltage of the connection wires on the indoor terminal board between...

Страница 59: ...ng outdoor unit PCB mounted or defective Troubleshooting OK No Yes Are the connecting wires connected properly Yes No Correct the connection Match the compatible models Matched compatibly No Yes Chang...

Страница 60: ...Wiring Connection 54 4 0 Wiring Connection Model ATXN FTXN 25 35L M ARXN RXN 25 35L M...

Страница 61: ...Wiring Connection 55 Model ATXN FTXN 50 60L ARXN RXN 50 60L...

Страница 62: ...Wiring Connection 56 Model ATXN FTXN 50 60M ARXN RXN 50 60M...

Страница 63: ...NDOOR UNIT OUTDOOR UNIT PIPING GAS PIPING LIQUID 2 WAY VALVE STRAINER STRAINER ELECTRONIC EXPANSION VALVE 3 WAY VALVE DISCHARGE PIPE THERMISTOR ACCUMULATOR COMPRESSOR MUFFLER MUFFLER AIR THERMISTOR HE...

Страница 64: ...0 3 3 18E 01 3 26E 01 3 33E 01 47 44 4E 00 4 52E 00 4 60E 00 2 3 04E 01 3 11E 01 3 18E 01 48 4 29E 00 4 37E 00 4 42E 00 1 2 90E 01 2 97E 01 3 03E 01 49 4 15E 00 4 22E 00 4 30E 00 0 2 78E 01 2 84E 01 2...

Страница 65: ...33 7 31E 00 7 40E 00 7 50E 00 83 1 45E 00 1 49E 00 1 54E 00 34 7 04E 00 7 14E 00 7 23E 00 84 1 41E 00 1 45E 00 1 49E 00 35 6 79E 00 6 88E 00 6 98E 00 85 1 37E 00 1 41E 00 1 45E 00 36 6 54E 00 6 64E 00...

Страница 66: ...nnector and check the continuity Start heating operation Replace four way valve S80 voltage at 180 280V with compressor on Four way valve coil resistance at Yes Yes Replace outdoor PCB Replace four wa...

Страница 67: ...nce at a Yes Yes Replace outdoor PCB Replace four way valve coil No Four way valve coil Cooling Dry No continuity Heating Continuity Refer Figure 1 below No Fig 1 Voltage at S80 220 240 VAC Compressor...

Страница 68: ...the power module as below i Disconnect compressor harness connector from outdoor PCB ii Follow table below to measure resistance between or power module terminal or diode bridge and the U V or W termi...

Страница 69: ...0 V is applied 1 Set operation off and power off Disconnect the connector S70 2 Check that the voltage between the pins 4 7 is 320 VDC 3 Check that the control voltage between the pins 3 4 is 15 VDC 4...

Страница 70: ...mperature The outdoor temperature should be within the operation range Is the airflow blocked by obstacles or winds blowing in the opposite direction No Change the installation location direction or r...

Страница 71: ...ster positive terminal for digital tester Power transistor UVW Power transistor UVW Positive terminal of tester negative terminal for digital tester UVW Power transistor UVW Power transistor Normal re...

Страница 72: ...waveform is a sine wave Fig 1 Check if there is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 R1726 R1444 6 11 Retrived parameter using D checker cable and software O...

Страница 73: ...roduct manufactured in an ISO certified facility This document contains the most current information as of this orienting For the most up to date product information please go to www daikin oyl com my...

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