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Troubleshooting

Service manual

17

FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02

INFORMATION

If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.

1.5.14 F6-00 – Outdoor unit: Abnormal high pressure in cooling

Trigger

Effect

Reset

Outdoor heat exchanger
thermistor measures a
too high temperature.

Unit will NOT stop
operating.

Automatic reset when
temperature drops.

To solve the error code

INFORMATION

It is recommended to perform the checks in the listed order.

1

Clean the outdoor heat exchanger. See

"4 Maintenance"

Possible cause:

Dirty outdoor heat exchanger.

2

Check that all stop valves of the refrigerant circuit are open. See

"3.2 Refrigerant circuit"

Possible cause:

Closed stop valve in the refrigerant circuit.

3

Perform

a

check

of

the

heat

exchanger

thermistor.

See

"2.13 Thermistors"

Possible cause:

Faulty heat exchanger thermistor.

4

Perform a check of the expansion valve. See

"2.3 Expansion valve"

Possible cause:

Faulty expansion valve.

5

Perform a check of the main PCB. See

Possible cause:

Faulty main PCB.

6

Check if the refrigerant circuit is correctly charged. See

"3.2 Refrigerant

Possible cause:

Refrigerant overcharge.

7

Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See

"3.2 Refrigerant circuit"

Possible cause:

Non‑condensables and/or humidity in the refrigerant circuit.

8

Check if the refrigerant circuit is clogged. See

"3.2 Refrigerant circuit"

Possible cause:

Clogged refrigerant circuit.

9

Perform a check of the outdoor unit fan motor. See

"2.9 Outdoor unit fan

Possible cause:

Faulty outdoor unit fan motor.

INFORMATION

If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.

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Содержание Sensira Series

Страница 1: ...Service manual Split Sensira R32 FTXF20 71A FTXF20 25B FTXF20 42C ATXF20 71A ATXF20 42C RXF20 71A RXF20 60B RXF20 42C ARXF20 71A ARXF20 42C...

Страница 2: ...piled the content of this publication to the best of its knowledge No express or implied warranty is given for the completeness accuracy reliability or fitness for particular purpose of its content an...

Страница 3: ...0 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 added Techni...

Страница 4: ...tion sensor 20 1 5 19 H8 00 Outdoor unit Malfunction of compressor input system 21 1 5 20 H9 00 Outdoor unit Malfunction of outdoor air thermistor 21 1 5 21 J3 00 Outdoor unit Malfunction of discharge...

Страница 5: ...ecking procedures 127 3 1 2 Repair procedures 128 3 2 Refrigerant circuit 129 3 2 1 Checking procedures 129 3 2 2 Repair procedures 133 3 3 External factors 136 3 3 1 Checking procedures 136 4 Mainten...

Страница 6: ...roller to reset the error 1 3 To reset the error code via outdoor unit Prerequisite Problem is solved 1 Perform a power reset to reset the error code 1 4 To perform a test run Prerequisite Power suppl...

Страница 7: ...s immediately after power is restored 1 5 Error based troubleshooting 1 5 1 A1 00 PCB abnormality Trigger Effect Reset The system CANNOT set the internal settings Unit will stop operating Power reset...

Страница 8: ...trol 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 See 3 3 External factors 4136 P...

Страница 9: ...2 5 Indoor unit fan motor 464 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 1 5 4 C4...

Страница 10: ...CB 467 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 1 5 6 E1 00 Outdoor unit PCB defe...

Страница 11: ...en performed and the problem is still present contact the helpdesk 1 5 7 E3 00 Outdoor unit Actuation of high pressure switch Trigger Effect Reset High pressure switch opens due to measured pressure a...

Страница 12: ...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 See...

Страница 13: ...n the listed order 1 Perform a check of the discharge pipe thermistor See 2 13 Thermistors 4117 Possible cause Faulty discharge pipe thermistor or connector fault 2 Check that all stop valves of the r...

Страница 14: ...ORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the outdoor unit fan motor See 2 9 Outdoor unit fan motor 492 Possible cause Faulty outdoor unit fan motor 2 P...

Страница 15: ...fter 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 INFORMATION It is recommended to perform the che...

Страница 16: ...It is recommended to perform the checks in the listed order 1 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4129 Possible cause Closed stop valve in the re...

Страница 17: ...ve in the refrigerant circuit 3 Perform a check of the heat exchanger thermistor See 2 13 Thermistors 4117 Possible cause Faulty heat exchanger thermistor 4 Perform a check of the expansion valve See...

Страница 18: ...non condensables and or humidity in the refrigerant circuit See 3 2 Refrigerant circuit 4129 Possible cause Non condensables and or humidity in the refrigerant circuit 4 Check if the refrigerant circu...

Страница 19: ...roperly on the heat sink INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 17 H3 00 Outdoor unit Malfunction of high pressure swi...

Страница 20: ...a check of the main PCB See 2 8 Main PCB 474 Possible cause Faulty main PCB 3 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4129 Possible cause Closed stop...

Страница 21: ...m a check of the compressor See 2 2 Compressor 444 Possible cause Faulty compressor or miswiring of the compressor power supply cable 3 Perform a check of the reactor See 2 11 Reactor 4111 Possible ca...

Страница 22: ...If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 22 J6 00 Outdoor unit Malfunction of heat exchanger thermistor Trigger Effect Reset Outdoor...

Страница 23: ...outdoor heat exchanger INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 24 L4 00 Outdoor unit Malfunction of inverter radiating...

Страница 24: ...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 3 2 Refrigerant circuit 4129 Possi...

Страница 25: ...he problem is still present contact the helpdesk 1 5 26 P4 00 Outdoor unit Malfunction of radiating fin temperature sensor Trigger Effect Reset Radiating fin thermistor input is out of range Unit will...

Страница 26: ...pressor power supply cable 7 Perform a check of the expansion valve See 2 3 Expansion valve 453 Possible cause Faulty expansion valve 8 Check for leaks in the refrigerant circuit Look for oil traces o...

Страница 27: ...ating Power reset via outdoor unit To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check if the power supply is conform with the regulations See 3 1 E...

Страница 28: ...rigger Effect Reset Signal transmission between outdoor and indoor unit abnormality Improper combination of outdoor and indoor unit Unit will stop operating Power reset via outdoor unit To solve the e...

Страница 29: ...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 Diagnose with r...

Страница 30: ...in 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 Incorrect size...

Страница 31: ...ibration 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 specifie...

Страница 32: ...al 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 collectio...

Страница 33: ...here 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 valve operat...

Страница 34: ...0 supplied Check the insulation of the electric system Check the thermistor Connection witch PCB Output Check PCB s HAP LED s if applicable if green led on the control PCB is not blinking then the mic...

Страница 35: ...ir 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 coil broken...

Страница 36: ...site Oil mist Check installation conditions Dirty heat exchanger Air filter Dirty air filter Fan motor Defective fan motor 1 6 11 Swing flap does not operate Symptom Check Detail Swing flap does not...

Страница 37: ...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 valve coil firmly...

Страница 38: ...Class 20 42 12 V DC Class 50 71 220 240 V AC 7 De activate Heating and activate Cooling operation via the user interface 8 Measure the voltage on the 4 way valve connection on the PCB Result The measu...

Страница 39: ...way valve see 2 1 1 Checking procedures 437 When outdoor temperature is mild and unit can switch between heating and cooling INFORMATION This procedure is ONLY possible when the outdoor temperature i...

Страница 40: ...ature is outside the temperature range for one of the operation modes Heating or Cooling The unit CANNOT operate in the mode for which the outdoor temperature is outside its temperature range See the...

Страница 41: ...4 way valve coil c 4 way valve body 2 Cut all tie straps that fix the 4 way valve coil harness 3 Disconnect the 4 way valve coil connector from the appropriate PCB 4 To install the 4 way valve coil se...

Страница 42: ...the 4 way valve pipe ends 7 Stop the nitrogen supply when the piping has cooled down 8 To install the 4 way valve body see 2 1 2 Repair procedures 441 To install the 4 way valve body 1 Remove the coil...

Страница 43: ...circuit see 3 2 2 Repair procedures 4133 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 valve body 2 Install and tighte...

Страница 44: ...o the compressor when it tries to operate Judge if a mechanical lock is present INFORMATION If you have a multimeter with data logging functionality record the current in 1 of the U V W wires at compr...

Страница 45: ...the compressor dampers for any damage a a 1 Damper INFORMATION The compressor dampers may look different Compressor dampers are in a good condition Action Yes Perform an electrical check of the compre...

Страница 46: ...ctors 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 motor winding...

Страница 47: ...e terminal W 7 Install the compressor insulation 8 Turn ON the power using the respective circuit breaker 9 Start the unit operation via the user interface 10 Wait for or create condition to operate t...

Страница 48: ...ce 1 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure the rectifier voltage is below 10 V DC b...

Страница 49: ...air procedures To remove the compressor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see...

Страница 50: ...ng installation V U W U Wire terminal U V Wire terminal V W Wire terminal W 4 Cut the compressor pipes below the soldered joint using a pipe cutter a a a Compressor pipe 5 Supply nitrogen to the refri...

Страница 51: ...emove the bushings and keep them for re use 11 To install the compressor see 2 2 2 Repair procedures 449 To install the compressor 1 Check the state of the dampers Replace if worn 2 Install the 3 damp...

Страница 52: ...any other components near the compressor and solder the compressor pipes to the refrigerant pipes a a a Compressor pipe CAUTION Overheating the compressor pipes and the oil inside the compressor pipe...

Страница 53: ...ical check of the expansion valve Prerequisite Power OFF the unit for 3 minutes Then turn ON the unit and listen to the expansion valve assembly If the expansion valve does NOT make a latching sound c...

Страница 54: ...ctrical check of the expansion valve see 2 3 1 Checking procedures 453 No Replace the expansion valve body see 2 3 2 Repair procedures 456 To perform an electrical check of the expansion valve 1 First...

Страница 55: ...nterface 3 With the unit operating connect the service monitoring tool to the unit 4 When the expansion valve is closed according to the service monitoring tool check the inlet and outlet of the valve...

Страница 56: ...et and outlet of the valve with a contact thermometer or use an expansion valve stethoscope to see if refrigerant flows through the expansion valve Result Refrigerant MUST flow through the expansion v...

Страница 57: ...position of the expansion valve coil before removal a b a Expansion valve motor b Expansion valve motor harness INFORMATION The expansion valve and motor can have a different configuration layout 4 C...

Страница 58: ...figuration layout 3 Cut the expansion valve pipes using a pipe cutter 4 Remove the expansion valve body 5 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 6 He...

Страница 59: ...it 4 After soldering is done stop the nitrogen supply after the component has 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...

Страница 60: ...B WARNING When reconnecting a connector to the PCB make sure to connect it on the correct location and do NOT apply force as this may damage the connector or connector pins of the PCB 4 Fix the expans...

Страница 61: ...he expansion valve motor harness using new tie straps 5 Install the insulation cap on the expansion valve motor if applicable Is the problem solved Action Yes No further actions required No Return to...

Страница 62: ...ng between the high pressure switch and the appropriate PCB If NO continuity is measured repair as needed see 5 2 Wiring diagram 4142 4 Measure the resistance between the Faston connections of the hig...

Страница 63: ...res To remove the high pressure switch Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see...

Страница 64: ...ressure switch and solder the high pressure switch pipe to the refrigerant pipe a c b b a High pressure switch b Faston connector c High pressure switch pipe CAUTION Overheating the pressure switch wi...

Страница 65: ...ures 464 No Replace the DC fan motor assembly see 2 5 2 Repair procedures 465 To perform an electrical check of the DC fan motor assembly Prerequisite First perform a mechanical check of the DC fan mo...

Страница 66: ...fan motor cover for easier removal a a Indoor unit fan motor cover 3 Remove the rubber from the indoor unit 4 Remove the indoor unit fan motor from the indoor unit 5 To install the indoor unit fan mot...

Страница 67: ...he 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 2 10 Plate work...

Страница 68: ...rt number corresponds with the spare part number indicated in the webbank Is the correct spare part for the indoor unit PCB installed Action Yes Return to 2 6 1 Checking procedures 467 of the indoor u...

Страница 69: ...s 467 of the indoor unit main PCB and continue with the next procedure Problem solved After all checking procedures listed above have been performed Is the problem solved Action Yes No further actions...

Страница 70: ...quisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 4101 1 Disconnect all connectors from the indoor unit main PCB 2 Carefully pull the indo...

Страница 71: ...the problem solved Action Yes No further actions required No Return to 2 6 1 Checking procedures 467 of the indoor unit main PCB and continue with the next procedure To remove a fuse of the indoor un...

Страница 72: ...k of the inverter PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 4...

Страница 73: ...ansistor check operation may damage the compressor INFORMATION Wait for 3 minutes for the power transistor check operation to start 6 All LED s on the Inverter Analyzer must lit 7 Turn off the respect...

Страница 74: ...es As the inverter PCB is integrated in the main PCB of the unit see 2 8 Main PCB 474 for the repair procedures 2 8 Main PCB 2 8 1 Class 20 42 units Checking procedures INFORMATION It is recommended t...

Страница 75: ...er supply to the unit see 3 1 2 Repair procedures 4128 To check the HAP LED of the main PCB Prerequisite First check the power supply to the main PCB see Checking procedures 474 1 Locate the HAP LED o...

Страница 76: ...g of the main PCB Prerequisite First perform all earlier main PCB checks see Checking procedures 474 Prerequisite Stop the unit operation via the user interface 1 Turn OFF the respective circuit break...

Страница 77: ...n 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 Checking procedures 474 1 Turn ON the power of the...

Страница 78: ...ectifier voltage is NOT OK replace the main PCB Below procedure describes how to check the diode module itself Prerequisite Stop the unit operation via the user interface 2 Turn OFF the respective cir...

Страница 79: ...ration via the user interface 1 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure the rectifier...

Страница 80: ...Check the power module IPM2 in reference with the image and the table below e d a b c a U b V c W d DC e DC INFORMATION When measuring on the front of the main PCB make sure to locally remove the pro...

Страница 81: ...urn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 4101 1 Disconnect all connectors from the main PCB 2 Disconnect the power supply wires from the m...

Страница 82: ...ound wires through the ferrite core s Install the ground wiring on the switch box and fix using the screw 5 Route the reactor wires towards the reactor and connect the Faston connectors to the reactor...

Страница 83: ...use from the PCB a a Fuse 2 To install a fuse on the main PCB see Repair procedures 481 To install a fuse on the main PCB WARNING For continued protection against risk of fire replace only with same t...

Страница 84: ...urn 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 PCB corre...

Страница 85: ...uisite First perform all earlier main PCB checks see Checking procedures 484 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part number cor...

Страница 86: ...her actions required No Return to Checking procedures 484 of the PCB and continue with the next procedure To check the fuse of the main PCB Prerequisite First perform all earlier main PCB checks see C...

Страница 87: ...orm a check of the power module see Checking procedures 484 No Replace the main PCB see Repair procedures 489 To perform a diode module check 1 First check the rectifier voltage of the main PCB see Ch...

Страница 88: ...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 489 To perform a power module check Prerequisite First check the rectifier voltage of the ma...

Страница 89: ...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 484 of the main PCB and...

Страница 90: ...ector h Tie strap compressor harness i Ferrite core compressor harness j Screw k Main PCB 3 Remove the screw and remove the ground wiring from the switch box Route the ground wire out of the ferrite c...

Страница 91: ...nd connect the compressor connector 5 Install new tie straps to fix the compressor harness to the switch box 6 Route the ground wire through the ferrite core Install the ground wiring on the switch bo...

Страница 92: ...ssembly damaged Action Yes Replace the propeller fan blade assembly see Repair procedures 494 No Perform a mechanical check of the DC fan motor assembly see Checking procedures 492 To perform a mechan...

Страница 93: ...e 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 turned OFF...

Страница 94: ...wly rotate the fan blade propeller 1 turn and measure the voltage on the DC fan motor connector pins 10 12 Result 4 pulses MUST be measured 13 Repeat the previous step and measure the voltage on the D...

Страница 95: ...lightly 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 the DC fan...

Страница 96: ...ure 2 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 Prerequisite S...

Страница 97: ...on Yes Perform an electrical check of the DC fan motor assembly see Checking procedures 496 No Replace the DC fan motor assembly see Repair procedures 499 To perform an electrical check of the DC fan...

Страница 98: ...fan motor see Repair procedures 499 9 Turn ON the power of the unit 10 With the DC fan motor connector S70 disconnected from the inverter PCB measure the voltage on the connector pins 4 7 fan motor po...

Страница 99: ...of the main PCB see Checking procedures 474 No Replace the DC fan motor see Repair procedures 499 Problem solved After all checking procedures listed above have been performed Is the problem solved A...

Страница 100: ...ach 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 procedures 499...

Страница 101: ...2E 2021 02 a b a Nut b Propeller fan blade assembly Is the problem solved Action Yes No further actions required No Return to Checking procedures 496 of the outdoor unit fan motor and continue with th...

Страница 102: ...ust an example and may differ on some details for your actual unit Prerequisite Stop the unit operation via the user interface 1 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Wa...

Страница 103: ...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 2 10 Plate wo...

Страница 104: ...t Sensira R32 ESIE18 12E 2021 02 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 a Electri...

Страница 105: ...e 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 2 10 Plate work 4101 To install the switch box INFORM...

Страница 106: ...ectrical 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 connection diagr...

Страница 107: ...32 ESIE18 12E 2021 02 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 2 10 2 Indoor unit To open the front panel 1 Hold the front...

Страница 108: ...nel 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 shaft To open the service cover 1 Remove 1 screw from the service cover...

Страница 109: ...le push it up and then toward you 1 2 To remove the electrical wiring box cover 1 Remove the front grille 2 Remove 1 screw from the electrical wiring box 3 Open the electrical wiring box cover by pull...

Страница 110: ...3 Remove the screws to disconnect the grounding wires from the heat exchanger a a b c d e a Grouding wire screw b Heat exchanger thermistor c Indoor unit PCB d Switch box screw e Switch box 4 Disconne...

Страница 111: ...ack on the front grille 3 Install the air filter and then mount the front panel 2 11 Reactor 2 11 1 Checking procedures To perform an electrical check of the reactor Prerequisite Stop the unit operati...

Страница 112: ...128 7 m Is the resistance measurement correct Action Yes Return to the troubleshooting of the specific error and continue with the next step No Replace the reactor see 2 11 2 Repair procedures 4114 Cl...

Страница 113: ...rect Action Yes Proceed with the next step No Replace the reactor see 2 11 2 Repair procedures 4114 4 Measure the inductance of the reactor using an LCR meter Result The inductance MUST be as follows...

Страница 114: ...terface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 2 10 Plate work 4101 2 Remove the Faston connectors to disconnect the wires from the reactor 3 Remove...

Страница 115: ...k 4101 1 Disconnect the swing flap motor connector from the indoor unit main PCB 2 Measure the resistance between the following pins of the motor connector Result The measurements MUST be as shown in...

Страница 116: ...ing flap motor from the swing flap 5 To install the swing flap motor see 2 12 2 Repair procedures 4115 To install the swing flap motor 1 Install the swing flap motor in the correct location on the swi...

Страница 117: ...g or ambient for air thermistor Is the thermistor correctly installed thermal contact between the thermistor and the piping Action Yes Perform an electrical check of the specific thermistor see Checki...

Страница 118: ...2 S27 1 2 on display PCB B Heat exchanger thermistor R2T Main I U S32 1 2 A 4 Determine the thermistor resistance that matches the measured temperature Thermistor Table A T C k T C k T C k T C k 20 19...

Страница 119: ...61 46 26 44 05 41 95 31 32 33 34 35 36 37 38 39 15 43 14 79 14 18 13 59 13 04 12 51 12 01 11 52 11 06 61 62 63 64 65 66 67 68 69 4 70 4 54 4 38 4 23 4 08 3 94 3 81 3 68 3 56 Thermistor Table B T C k...

Страница 120: ...erface display replace the applicable PCB INFORMATION See the overview of the thermistors at the start of the procedure and the 5 2 Wiring diagram 4142 to determine if the specific thermistor is eithe...

Страница 121: ...e respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 4101 1 Disconnect the connector from the display PCB 2 Press the latches to unlock and remove the display P...

Страница 122: ...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 procedure and 5 2 Wiring d...

Страница 123: ...ay PCB in the correct location on the unit 2 Connect the connector to the display PCB Other refrigerant side thermistors 3 Install the thermistor in the thermistor holder as follows For outdoor unit a...

Страница 124: ...g 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 7 Fix the thermistor harness using new tie...

Страница 125: ...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 87 1 2 3 4 5 6 7 8 9 62 54 59 43 56 49 53 71 51 09 48 61 46 26 44 05 41 95 31 32 33 34 3...

Страница 126: ...ira R32 ESIE18 12E 2021 02 INFORMATION All thermistors have a resistance tolerance of 3 Does the measured resistance of the thermistor match with the temperature determined resistance Action Yes Therm...

Страница 127: ...on the power supply terminal X1M Result The voltage MUST 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 troublesh...

Страница 128: ...ng as needed 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 1 2 Repair procedures To adjust...

Страница 129: ...to the troubleshooting of the specific error and continue with the next procedure 3 2 Refrigerant circuit 3 2 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed o...

Страница 130: ...2 5 4K an internal pipe obstruction may be present at this location INFORMATION Focus on positions with a potential risk for clogging such as Filters Valves Brazing points INFORMATION A bigger temper...

Страница 131: ...amount Higher degree of overcharge Degree of overcharge To maintain high pressure frequency decreases under the capacity control Low pressure drops due to closed outdoor unit electronic expansion valv...

Страница 132: ...o compressor capacity decreasing Operating frequency comes to the lowest level Heating Frequency Low pressure High pressure Proper amount Higher degree of shortage Degree of refrigerant shortage To ma...

Страница 133: ...e the refrigerant see 3 2 2 Repair procedures 4133 No Return to the troubleshooting of the specific error and continue with the next procedure To perform a pressure test of the refrigerant circuit 1 P...

Страница 134: ...repaired See also Repair information 4135 for more details Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the nex...

Страница 135: ...iate 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 vacuum drying procedure after...

Страница 136: ...apply insulation removed during repair Pipe expansion flare making Remove any burrs on the cut surface using the correct tool such as reamer or scraper note that excessive deburring can thin the pipe...

Страница 137: ...e troubleshooting of the specific error and continue with the next procedure No Wait for the outdoor temperature to return within the operating range To check for objects that may block the airflow 1...

Страница 138: ...indoor unit heat exchanger 1 Straighten the hair fins 2 Clear the indoor unit heat exchanger from dust using a fin comb or compressed air N2 CAUTION Avoid bending or damaging the hair fins of the ind...

Страница 139: ...lem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 4 4 To clean the air filters 1 Push the tab at the centre...

Страница 140: ...0 25B FTXF20 42C ATXF20 71A ATXF20 42C RXF20 71A RXF20 60B RXF20 42C ARXF20 71A ARXF20 42C Split Sensira R32 ESIE18 12E 2021 02 Is the problem solved Action No Return to the troubleshooting of the spe...

Страница 141: ...information setting mode 5 1 1 Detailed information setting mode Indoor unit See the installer reference guide on business portal for more information 5 1 2 Detailed information setting mode Outdoor u...

Страница 142: ...ram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote control Wireless remote co...

Страница 143: ...gnetic relay PCB1 PCB2 PCB3 Printed circuit board R1T Room thermistor R2T Suction pipe thermistor S6 S602 Connector S1W Operation switch V2 Varistor X1M Terminal strip Z C Ferrite core FTXF50 71A ATXF...

Страница 144: ...When the main power is turned off 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...

Страница 145: ...Wiring diagram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Note Note Connection X1M Main termin...

Страница 146: ...S20 S90 Connector V2 V3 Varistor X1M Terminal strip Y1S Reversing solenoid valve coil PTC1 Thermistor Y1E Electronic expansion valve Z C Noise filter ferrite core Z F Noise filter RXF50A 1 Wiring dia...

Страница 147: ...1C Compressor motor M1F Fan motor MR Magnetic relay N Neutral PAM Pulse amplitude modulation PCB Printed circuit board PS Switching power supply Q1L Overload protector R1T R2T R3T Thermistor S2 S90 Te...

Страница 148: ...pply PCB Protective earth Earth Field wire NOTES GRY Grey BLK Black WHT White BRN Brown RED Red GRN Green YLW Yellow ORG Orange BLU Blue For the power requirements refer to the nameplate 3 Legend C Ca...

Страница 149: ...arrestor V1 V2 V3 Varistor X11A X14A Connector X1M Terminal strip Y1E Electronic expansion valve coil Y1S Reversing solenoid valve coil Z C Ferrite core Z F Noise filter RXF71A RXF50 60B ARXF50 71A 1...

Страница 150: ...HN1 S U V W Connector FU1 FU2 FU3 Fuse IPM Intelligent power module L Live M1C Compressor motor M1F Fan motor MR Magnetic relay N Neutral N 4 N 5 Number of passes PAM Pulse amplitude modulation PCB P...

Страница 151: ...t 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 motor R2T The...

Страница 152: ...35C 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 h...

Страница 153: ...T 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 Thermistor heat exchanger...

Страница 154: ...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 Thermistor hea...

Страница 155: ...eld 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 outdo...

Страница 156: ...ping 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...

Страница 157: ...onnection 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 Thermisto...

Страница 158: ...ection 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 Thermistor h...

Страница 159: ...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 Thermistor comp...

Страница 160: ...3T 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 Filter h Muff...

Страница 161: ...F20 60B RXF20 42C ARXF20 71A ARXF20 42C Split Sensira R32 ESIE18 12E 2021 02 5 4 Component overview 5 4 1 Component overview Indoor unit a b c d e f h g a Heat exchanger b Heat exchanger thermistor R2...

Страница 162: ...erview 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 c Expansion valve l Discharge pipe thermistor R3T...

Страница 163: ...data Service manual 163 FTXF20 71A FTXF20 25B FTXF20 42C ATXF20 71A ATXF20 42C RXF20 71A RXF20 60B RXF20 42C ARXF20 71A ARXF20 42C Split Sensira R32 ESIE18 12E 2021 02 5 5 Field information report Se...

Страница 164: ...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 165: ...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 166: ...1 For an overview of the available service tools check the Business Portal http www mydaikin eu 2 Go to the tab After sales support on the left navigation pane and select Technical support 3 Click th...

Страница 167: ...1 Field settings Indoor unit To control the indoor unit fan during thermostat off in cooling INFORMATION As this unit has no remote controller installed order the remote controller ARC480A1 separately...

Страница 168: ...e 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 operating w...

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Страница 172: ...ESIE18 12E 2021 02 Copyright 2018 Daikin Verantwortung f r Energie und Umwelt...

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