Daikin Split Comfora R32 Service Manual Download Page 110

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Components

Service manual

110

ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71

Split Comfora R32

ESIE18-01C – 2020.07

2.14 Thermistors

2.14.1 Refrigerant side thermistors

Checking procedures

INFORMATION

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

To perform a mechanical check of the specific thermistor

Prerequisite:

Stop the unit operation via the user interface.

Prerequisite:

Turn OFF the respective circuit breaker.

Prerequisite:

Remove the required plate work, see

"2.10 Plate work"

[

92].

Locate the thermistor and remove the insulation if needed. Check that the
thermistor is correctly installed and that there is thermal contact between the
thermistor and the piping 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

Correctly install the thermistor, see

"Repair procedures"

[

112].

To perform an electrical check of the specific thermistor

First perform a mechanical check of the thermistor, see

DANGER: RISK OF ELECTROCUTION

Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.

Locate the thermistor.

INFORMATION

Remove the thermistor from its holder if not reachable with a contact thermometer.

Measure the temperature using a contact thermometer.

Name

Symbol

Location (PCB) Connector

(pins)

Type

Air thermistor

R1T

Main (O/U)

S90:1‑2

Heat
exchanger
thermistor

R2T

Main (O/U)

S90:3‑4

Discharge pipe
thermistor

R3T

Main (O/U)

S90:5‑6

Summary of Contents for Split Comfora R32

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

Page 2: ...tion to the best of its knowledge No express or implied warranty is given for the completeness accuracy reliability or fitness for particular purpose of its content and the products and services presented therein Specifications are subject to change without prior notice Daikin Europe N V explicitly rejects any liability for any direct or indirect damage in the broadest sense arising from or relate...

Page 3: ... unit models ATXP20 35M and FTXP20 71M added Components Swing raster motor Check Repair procedures added Technical data Wiring diagram Wiring diagrams for new models added Technical data Piping diagram Piping diagrams for new models added Technical data Component overview Component overviews for new models added Version code Description Date ESIE18 01C See below July 2020 The following updates hav...

Page 4: ...lfunction 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 pipe thermistor 22 1 5 22 J6 00 Outdoor unit Malfunction of heat exchanger thermistor 22 1 5 23 L3 00 Outdoor unit Electrical box temperature rise problem 22 1 5 24 L4 00 Outdoor unit Malfunction of inverter radiating fin temperature rise 23 ...

Page 5: ...nents 121 3 1 Electrical circuit 121 3 1 1 Checking procedures 121 3 1 2 Repair procedures 122 3 2 Refrigerant circuit 123 3 2 1 Checking procedures 123 3 2 2 Repair procedures 127 3 3 External factors 130 3 3 1 Checking procedures 130 4 Maintenance 132 4 1 To clean the outdoor unit heat exchanger 132 4 2 To clean the indoor unit heat exchanger 132 4 3 To clean the air filters 132 5 Technical data...

Page 6: ...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 supply MUST be in the specified range Prerequisite Test run may be performed in cooling or heating mode Prerequisite Test run should be performed in accordance with the operation manual of the indoor unit to make sure that all functions a...

Page 7: ...oting 1 5 1 A1 00 PCB abnormality Trigger Effect Reset The system CANNOT set the internal settings Unit will stop operating Power reset via outdoor unit To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check for improper combination of the indoor unit and the outdoor unit See the combination table in the Databook for more information 2 Perform a che...

Page 8: ...NFORMATION 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 4130 Possible cause Airflow of the indoor unit is blocked 2 Clean the air filter See 4 Maintenance 4132 Possible cause Faulty or dirty air filter 3 Clean the indoor unit heat exchanger See 4 Maintenance 4132 Possible cause Dirty indoor ...

Page 9: ...465 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 00 Indoor heat exchanger thermistor abnormality Trigger Effect Reset Refrigerant liquid thermistor detects an open or short circuit during compressor operation Unit will stop operating Power reset To solve the error code INFOR...

Page 10: ...e have been performed and the problem is still present contact the helpdesk 1 5 6 E1 00 Outdoor unit PCB defect Trigger Effect Reset Main PCB detects that EEPROM is abnormal Unit will stop operating Manual reset via user interface Power reset To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the main PCB See 2 8 Main PCB 475 Possib...

Page 11: ...ffect Reset High pressure switch opens due to measured pressure above high pressure switch operating point Unit will stop operating Manual reset via user interface High pressure control measured pressure just below high pressure switch operating point occurs 16 times within 300 minutes To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check that all ...

Page 12: ... order 1 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4123 Possible cause Closed stop valve in the refrigerant circuit 2 Perform a check of the discharge pipe thermistor See 2 14 Thermistors 4110 Possible cause Faulty discharge pipe thermistor or connector fault 3 Perform a check of the outdoor unit fan motor See 2 9 Outdoor unit fan motor 481 Possible...

Page 13: ...erform the checks in the listed order 1 Perform a check of the discharge pipe thermistor See 2 14 Thermistors 4110 Possible cause Faulty discharge pipe thermistor or connector fault 2 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4123 Possible cause Closed stop valve in the refrigerant circuit 3 Check if the refrigerant circuit is clogged See 3 2 Refrig...

Page 14: ...ting sensor signal Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the outdoor unit fan motor See 2 9 Outdoor unit fan motor 481 Possible cause Faulty outdoor unit fan motor 2 Perform a check of the inverter PCB See 2 7 Inverter PCB 473 Possible cause Faulty inverter PCB IN...

Page 15: ...r is NOT 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 interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the 4 way valve See 2 1 4 way valve 438 Possible cause Faulty 4 w...

Page 16: ...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 4123 Possible cause Closed stop valve in the refrigerant circuit 2 Check if the refrigerant circuit is correctly charged See 3 2 Refrigerant circuit 4123 Possible cause Refrigerant overcharge or shortage 3 Check for the presence of non...

Page 17: ...erform a check of the heat exchanger thermistor See 2 14 Thermistors 4110 Possible cause Faulty heat exchanger thermistor 4 Perform a check of the expansion valve See 2 3 Expansion valve 454 Possible cause Faulty expansion valve 5 Perform a check of the main PCB See 2 8 Main PCB 475 Possible cause Faulty main PCB 6 Check if the refrigerant circuit is correctly charged See 3 2 Refrigerant circuit 4...

Page 18: ...cuit 2 Perform a check of the discharge pipe thermistor See 2 14 Thermistors 4110 Possible cause Faulty discharge pipe thermistor or connector fault INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 16 H0 00 Outdoor unit Voltage current sensor problem Trigger Effect Reset Compressor voltage DC is out of range before start up Un...

Page 19: ...rformed and the problem is still present contact the helpdesk 1 5 17 H3 00 Outdoor unit Malfunction of high pressure switch Trigger Effect Reset High pressure switch is activated when compressor is off Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the high pressure switch...

Page 20: ...rm a check of the inverter PCB See 2 7 Inverter PCB 473 Possible cause Faulty inverter PCB 4 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4123 Possible cause Closed stop valve in the refrigerant circuit 5 Check if the refrigerant circuit is clogged See 3 2 Refrigerant circuit 4123 Possible cause Clogged refrigerant circuit 6 Check if the refrigerant ci...

Page 21: ...ter PCB 3 Perform a check of the compressor See 2 2 Compressor 444 Possible cause Faulty compressor or miswiring of the compressor power supply cable 4 Perform a check of the reactor See 2 11 Reactor 4101 Possible cause Faulty reactor INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 20 H9 00 Outdoor unit Malfunction of outdoor...

Page 22: ...ve 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 heat exchanger thermistor input is out of range Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the heat e...

Page 23: ...NFORMATION 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 fin temperature rise Trigger Effect Reset Radiating fin thermistor measures a too high temperature Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the...

Page 24: ...on Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check that all stop valves of the refrigerant circuit are open See 3 2 Refrigerant circuit 4123 Possible cause Closed stop valve in the refrigerant circuit 2 Check if the refrigerant circuit is clogged See 3 2 Refrigerant circuit 4123 Possibl...

Page 25: ... heat sink INFORMATION If all procedures listed above have been performed and the 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 stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the chec...

Page 26: ...uit 4123 Possible cause Non condensables and or humidity in the refrigerant circuit 6 Perform a check of the compressor See 2 2 Compressor 444 Possible cause Faulty compressor or miswiring of the compressor power supply cable 7 Perform a check of the expansion valve See 2 3 Expansion valve 454 Possible cause Faulty expansion valve 8 Check for leaks in the refrigerant circuit Look for oil traces on...

Page 27: ...ary drop of voltage Momentary power failure INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 29 U4 00 Indoor outdoor unit communication problem Trigger Effect Reset Communication failure between outdoor and indoor unit Unit will stop operating Power reset via outdoor unit To solve the error code INFORMATION It is recommended t...

Page 28: ...properly on the heat sink INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 1 5 30 UA 00 Indoor unit outdoor unit mismatching problem Trigger 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...

Page 29: ...ting Service manual 29 ATXP20 35 FTXP20 71 ARXP20 35 RXP20 71 Split Comfora R32 ESIE18 01C 2020 07 INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk ...

Page 30: ...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 remote controller indication See 1 5 Error based troubleshooting 47 Check the remote controller addresses Are the address settings for the remote controller and indoor unit correct Check the operation circuit Is the thermal fuse blown...

Page 31: ...s defective is there a refrigerant leakage Is there capacity loss over the condensor saturation pressure or sound because of air mixed in to the circuit Incorrect size of connection wiring When the operation lamp blinks there may be a thermistor detection error code activating the protection device Check the resistance of all thermistors Check the connection of all thermistors Is there a malfuncti...

Page 32: ...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 specified range Due to bad installation or general conditions there may be deformation of the unit Are all the screws installed and tightened properly Is all piping secured fixed and supported by inserting a cushion material where needed Ins...

Page 33: ...refrigerant system Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Is the refrigerant overcharged Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant In heating mode Check item Detail Does the indoor unit fan run normally Visual inspection Is the indoor unit heat exchanger clogged Visual inspection Is the indoor unit insta...

Page 34: ... expansion valve capillary Check if there is a temperature difference before and after expansion valve capillary Check if the main valve unit of expansion valve operates by noise vibration Is the check valve if applicable clogged Check if there is a temperature difference before and after check valve If YES the check valve is clogged Is there a shortage of refrigerant Conduct refrigerant collectio...

Page 35: ...f 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 microprocessor is not working if the green led on the main PCB is not blinking then the microprocessor is not working if first green LED on the service monitor PCB is not blinking then the microprocessor is not working Check the magneti...

Page 36: ...tem Check the fan motor Check the magnetic switch Check the overcurrent relay Check the four way valve coil Is there a short circuit Is the four way valve coil broken Check the outdoor PCB Is there a short circuit Is the outdoor PCB broken Check the heat exchanger Soiled heat exchanger obstruction Check the airflow Soiled air filter obstruction installation space 1 6 9 Operation stops unit cannot ...

Page 37: ... 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 operate Check swing flap motor Some functions can force the swing flap into a fixed position although swing mode is selected on the remote controller This is not a unit error but a control function to prevent draft to the customer Ch...

Page 38: ... is firmly fixing the coil to the valve body 2 Check if any damage or burst is present Is the 4 way valve coil firmly fixed and not visually damaged Action Yes Perform an electrical check of the 4 way valve see 2 1 1 Checking procedures 438 No Fix or replace the 4 way valve coil see 2 1 2 Repair procedures 441 To perform an electrical check of the 4 way valve Prerequisite First perform a mechanica...

Page 39: ...sition check of the 4 way valve see 2 1 1 Checking procedures 438 No Perform a check the main PCB see 2 8 Main PCB 475 When outdoor temperature does not allow the unit to run in cooling or heating mode INFORMATION Follow this procedure when the outdoor temperature is outside the temperature range for one of the operation modes Heating or Cooling The unit CANNOT operate in the mode for which the ou...

Page 40: ...ith the flow shown in the flow diagram See 5 3 Piping diagram 4145 Is the flow correct Action Yes Skip the next step of this procedure No Perform the next step of this procedure 4 Connect a manifold to one of the service ports of the refrigerant circuit and check the pressure suction discharge Compare with normal operation conditions of the unit Refrigerant pressure correct Action Yes Replace the ...

Page 41: ...See 5 3 Piping diagram 4145 Is the flow correct Action Yes 4 way valve is OK Return to the troubleshooting of the specific error and continue with the next procedure No Perform the next step of this procedure 9 Connect a manifold to one of the service ports of the refrigerant circuit and check the pressure suction discharge Compare with normal operation conditions of the unit Refrigerant pressure ...

Page 42: ...1 2 Repair procedures 441 2 Cut the 4 way valve pipes using a pipe cutter INFORMATION The cutting locations of the 4 way valve pipes can differ due to the pipe cutter needing sufficient space to go around the pipes It is up to the technician to define the best cutting locations If any refrigerant pipes are cut these need to be replaced during installation of the 4 way valve body c d a b a a 4 way ...

Page 43: ...gen pressure MUST NOT exceed 0 02 MPa 3 Wrap a wet rag around the 4 way valve and solder the 4 way valve pipes to the 4 way valve CAUTION Overheating the valve will damage or destroy it 4 After soldering is done stop the nitrogen supply after the component has cooled down c d a b a a 4 way valve pipe b 4 way valve c Putty d Insulation 5 Install the putty if available and the insulation if availabl...

Page 44: ... the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 2 2 Compressor 2 2 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform an auditive check of the compressor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the res...

Page 45: ... the refrigerant A mechanical lock is present on the compressor Action Yes Replace the compressor see 2 2 2 Repair procedures 450 No Perform an mechanical check of the compressor see 2 2 1 Checking procedures 444 To perform a mechanical check of the compressor Prerequisite First perform an auditive check of the compressor see 2 2 1 Checking procedures 444 Prerequisite Stop the unit operation via t...

Page 46: ...ck of the compressor 1 First perform a mechanical check of the compressor see 2 2 1 Checking procedures 444 DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure the rectifier voltage is below 10 V DC before proceeding 2 Remove the cover of the compressor wire terminals a a Compressor wire terminals cover 3 Disconnect the Faston connecto...

Page 47: ...bstracted from the measured winding resistance 4 Measure the resistance between the compressor motor windings U V V W and U W Result All measurements MUST be approximately the same Compressor motor winding measurements are correct Action Yes Continue with the next step No Replace the compressor see 2 2 2 Repair procedures 450 5 Measure the continuity of the U V and W wires between the compressor a...

Page 48: ... PCB 473 12 Measure the current in each phase U V and W while compressor is operating All measurements MUST be the same Compressor motor winding current measurements are correct Action Yes Perform an insulation check of the compressor see 2 2 1 Checking procedures 444 No Preventively replace the compressor see 2 2 2 Repair procedures 450 To perform an insulation check of the compressor Prerequisit...

Page 49: ...he position of the Faston connectors on the compressor wire terminals to allow correct connection during installation a a a a Faston connector 4 Set the Megger voltage to 500 V DC or 1000 V DC 5 Measure the insulation resistance between the following terminals The measured insulation resistance MUST be 3 MΩ U ground V ground W ground Compressor insulation measurements are correct Action Yes Compre...

Page 50: ...ressor insulation Prerequisite Recuperate the refrigerant from the refrigerant circuit see 3 2 2 Repair procedures 4127 1 If needed remove any parts to create more space for the removal of the compressor DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure the rectifier voltage is below 10 V DC before proceeding 2 Remove the cover of th...

Page 51: ...red joint using a pipe cutter a a a Compressor pipe 5 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 6 Heat the ends of the compressor pipes using an oxygen acetylene torch and remove the compressor pipe ends 7 Stop the nitrogen supply when the piping has cooled down 8 Remove the all the nuts and remove the compressor from the unit ...

Page 52: ...for re use 11 To install the compressor see 2 2 2 Repair procedures 450 To install the compressor 1 Check the state of the dampers Replace if worn 2 Install the 3 dampers in the correct location on the unit a a b c c c a a Nut b Compressor c Damper INFORMATION The compressor dampers may look different 3 Remove the caps from the compression pipe and suction pipe CAUTION The oil in the compressor is...

Page 53: ...pes 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 pipes will damage or destroy the compressor 6 After soldering is done stop the nitrogen supply after the component has cooled down 7 Connect the Faston connectors to the compressor wire terminals U V and W a a a a Faston connector 8 Install t...

Page 54: ... Prerequisite Power OFF the unit for 3 minutes Then turn ON the unit and listen to the expansion valve assembly If the expansion valve does NOT make a latching sound continue with the electrical check of the expansion valve see 2 3 1 Checking procedures 454 Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the requi...

Page 55: ...xpansion valve body see 2 3 2 Repair procedures 457 To perform an electrical check of the expansion valve 1 First perform a mechanical check of the expansion valve see 2 3 1 Checking procedures 454 2 Disconnect the electrical connector of the expansion valve coil from the appropriate PCB and measure the resistance of all windings between the pins of each phase wire and the common wire using a mult...

Page 56: ...ant flows through the expansion valve Check that the valve is NOT bleeding Result There MUST be NO flow through the expansion valve 5 When the expansion valve is open according to the service monitoring tool check the inlet 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 th...

Page 57: ... the troubleshooting of the specific error and continue with the next step No Replace the expansion valve see 2 3 2 Repair procedures 457 Problem solved After all checking procedures listed above have been performed 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 2 3 2 Repair procedures To remo...

Page 58: ...tor harness 4 Disconnect the expansion valve motor connector from the main PCB a a Expansion valve motor 5 To install the expansion valve motor see 2 3 2 Repair procedures 457 To remove the expansion valve body Prerequisite Recuperate the refrigerant from the refrigerant circuit see 3 2 2 Repair procedures 4127 Prerequisite If needed remove any parts or insulation to create more space for the remo...

Page 59: ...t circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 6 Heat the ends of the expansion valve pipes using an oxygen acetylene torch and remove the expansion valve pipe ends 7 Stop the nitrogen supply when the piping has cooled down 8 To install the expansion valve body see 2 3 2 Repair procedures 457 To install the expansion valve body 1 Install the expansion valve body in the correct location a...

Page 60: ...e body a b a Expansion valve pipe b Expansion valve body INFORMATION The expansion valve and motor can have a different configuration layout 5 Reinstall the putty 6 To install the expansion valve motor see 2 3 2 Repair procedures 457 7 Add refrigerant to the refrigerant circuit see 3 2 2 Repair procedures 4127 About the installation of the expansion valve motor NOTICE Select the correct type To in...

Page 61: ...t location and do NOT apply force as this may damage the connector or connector pins of the PCB 4 Fix the 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 2 3 1 Checking procedures 454 of the expansion valve and continue with the next procedure To inst...

Page 62: ... 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 2 3 1 Checking procedures 454 of the expansion valve and continue with the next procedure 2 4 High pressure switch 2 4 1 Checking procedures To perform an electrical check of the high pressure switch Prerequisite Stop the unit opera...

Page 63: ...Measure the resistance between the Faston connections of the high pressure switch Result The switch MUST be open INFORMATION If the high pressure switch was triggered open it will stay open until the refrigerant pressure drops below the reset pressure of the high pressure switch 7 Lower the pressure of the nitrogen in the refrigerant circuit just above reset pressure of the high pressure switch 8 ...

Page 64: ...igh pressure switch b Faston connector c High pressure switch pipe 3 Cut the high pressure switch pipe using a pipe cutter 4 Remove the high pressure switch from the unit 5 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 6 Heat the end of the high pressure switch pipe using an oxygen acetylene torch and remove the high pressure switch pipe end 7 Stop the n...

Page 65: ...refrigerant to the refrigerant circuit see 3 2 2 Repair procedures 4127 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 2 5 Indoor unit fan motor 2 5 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical check of the DC fan motor a...

Page 66: ...rror and continue with the next procedure No Replace the DC fan motor see 2 5 2 Repair procedures 466 2 5 2 Repair procedures To remove the DC fan motor assembly Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 492 1 Pull the clip and remove the heat exchanger thermistor ...

Page 67: ...from the indoor unit 7 Remove the indoor unit fan motor from the indoor unit 8 To install the indoor unit fan motor see 2 5 2 Repair procedures 466 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 indoor unit fan motor cover on the indoor unit a a Indoor unit fan motor cover 4 Put ...

Page 68: ...t the grounding wires to the heat exchanger using the screws 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 2 6 Indoor unit main PCB 2 6 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a power check of the indoor unit main PCB Prerequisi...

Page 69: ...d the indoor unit PCB see 2 6 2 Repair procedures 471 No See To check the power supply to the indoor unit 3 1 2 Repair procedures 4122 for the next steps To perform an electrical check of the indoor unit main PCB Procedure not available yet To check if the correct spare part is installed Prerequisite First perform all earlier checks of the indoor unit PCB see 2 6 1 Checking procedures 468 1 Visit ...

Page 70: ...connected and that all connectors are fully plugged in 2 Check that no connectors or wires are damaged 3 Check that the wiring corresponds with the wiring diagram see 5 2 Wiring diagram 4137 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to 2 6 1 Checking procedures 468 of the indoor unit PCB and continue with the next procedure To c...

Page 71: ...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 492 1 Correct the wiring from the indoor unit power supply terminal to the PCB see 5 2 Wiring diagram 4137 Is the problem solved Action Yes No further actions required No Return to 2 6 1 Checking procedures 468 of ...

Page 72: ...connection diagram for correct installation of the connectors see 5 2 Wiring diagram 4137 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 Is the problem solved Action Yes No further actions required No Return to 2 6 1 Checking procedures 468 of the indoor unit PCB a...

Page 73: ...e fuse on the correct location on the PCB CAUTION Make sure the fuse is plugged in correctly contact with the fuse holder a a Fuse Is the problem solved Action Yes No further actions required No Return to 2 6 1 Checking procedures 468 of the indoor unit PCB and continue with the next procedure 2 7 Inverter PCB 2 7 1 Checking procedures As the inverter PCB is integrated in the main PCB of the unit ...

Page 74: ...s U V and W INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation Connect the Faston connectors to the Inverter Analyzer SPP number 2238609 4 Turn ON the power of the unit 5 Use the remote control to activate the inverter test Press and simultaneously Press Select T test run mode Press to select FAN Press to start po...

Page 75: ...CB see 2 7 2 Repair procedures 475 Problem solved After all checking procedures listed above have been performed 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 2 7 2 Repair procedures As the inverter PCB is integrated in the main PCB of the unit see 2 8 Main PCB 475 for the repair procedures 2...

Page 76: ... Continue with the next step 3 Check the power supply to the unit see 3 1 1 Checking procedures 4121 Does the unit receive power Action Yes Correct the wiring from the main power supply terminal to the main PCB see 2 8 2 Repair procedures 478 No Adjust the power supply to the unit see 3 1 2 Repair procedures 4122 To check the HAP LED of the main PCB Prerequisite First check the power supply to the...

Page 77: ... part is installed for the capacity adapter Is the correct spare part for the PCB installed Action Yes Return to 2 8 1 Checking procedures 475 of the main PCB and continue with the next procedure No Replace the main PCB see 2 8 2 Repair procedures 478 To check the wiring of the main PCB Prerequisite First perform all earlier main PCB checks see 2 8 1 Checking procedures 475 Prerequisite Stop the u...

Page 78: ...lem solved After all checking procedures listed above have been performed 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 2 8 2 Repair procedures To correct the wiring from the main power supply terminal to the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Tu...

Page 79: ...work see 2 10 Plate work 492 1 Disconnect all connectors from the main PCB a a b b a a Screw b PCB support 2 Remove the screws from the main PCB 3 Carefully pull the main PCB from the PCB supports 4 Remove the main PCB from the unit 5 To install the main PCB see 2 8 2 Repair procedures 478 To install the main PCB 1 Apply grease to the PCB contact surface of the heat sink Distribute the grease as e...

Page 80: ...ectors see 5 2 Wiring diagram 4137 Is the problem solved Action Yes No further actions required No Return to 2 8 1 Checking procedures 475 of the PCB and continue with the next procedure To remove a fuse of the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 492...

Page 81: ...r actions required No Return to 2 8 1 Checking procedures 475 of the PCB and continue with the next procedure 2 9 Outdoor unit fan motor 2 9 1 Class 20 35 units Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical check of the propeller fan blade assembly Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF...

Page 82: ...d 2 Manually rotate the fan motor shaft Check that it rotates smoothly 3 Check the friction of the DC fan motor shaft bearing Is the DC fan motor shaft friction normal Action Yes Perform an electrical check of the DC fan motor assembly see Checking procedures 481 No Replace the DC fan motor assembly see Repair procedures 484 To perform an electrical check of the DC fan motor assembly 1 First perfo...

Page 83: ...e from the listed values due to instability during the measurements Are the measured resistance values correct Action Yes Continue with the next step No Replace the DC fan motor see Repair procedures 484 9 With the DC fan motor connector S71 disconnected from the main PCB measure the voltage on the connector pins 10 11 fan motor control on the inverter PCB Result The voltage MUST be 15 10 V DC Is ...

Page 84: ... further actions required No Return to the troubleshooting of the specific error and continue with the next procedure Repair procedures To remove the propeller fan blade assembly Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 2 10 Plate work 492 2 Remove the nut that fixes the propeller fan blade...

Page 85: ...otor assembly see Repair procedures 484 To install the DC fan motor assembly 1 Install the DC fan motor assembly in the correct location 2 Fix the DC fan motor assembly to the unit by tightening the screws 3 Route the DC fan motor harness through the harness retainers and bend the harness retainers to attach the DC fan motor harness 4 Attach the DC fan motor harness to the switch box 5 Install a n...

Page 86: ...nted on its base see Repair procedures 490 2 Check the state of the propeller fan blade assembly for damage deformations and cracks Is the propeller fan blade assembly damaged Action Yes Replace the propeller fan blade assembly see Repair procedures 490 No Perform a mechanical check of the DC fan motor assembly see Checking procedures 486 To perform a mechanical check of the DC fan motor assembly ...

Page 87: ...s 486 Rotates for a short time Perform an electrical check of the DC fan motor assembly fan motor rotates for a short time see Checking procedures 486 To perform an electrical check of the DC fan motor assembly fan motor does not rotate 1 First perform a functionality check of the outdoor unit fan motor assembly see Checking procedures 486 INFORMATION The DC fan motor connector MUST be plugged int...

Page 88: ...PCB correct Action Yes Replace the DC fan motor assembly see Repair procedures 490 No Perform a check of the inverter PCB see 2 7 1 Checking procedures 473 To perform an electrical check of the DC fan motor assembly fan motor rotates for a short time 1 First perform a functionality check of the outdoor unit fan motor assembly see Checking procedures 486 INFORMATION The DC fan motor connector MUST ...

Page 89: ...otor control on the inverter PCB Result The voltage MUST be 15 10 V DC Are both measured voltages correct Action Yes Continue with the next step No Perform a check of the inverter PCB see 2 7 1 Checking procedures 473 9 Measure the voltage on the DC fan motor connector S71 pins 2 4 rotation command on the PCB Result The measured voltage should be 0 7 V DC It should NOT be 0 V DC Is the measured vo...

Page 90: ...mbly a b a Nut b Propeller fan blade assembly 3 Pull and remove the propeller fan blade assembly from the DC fan motor assembly INFORMATION Use a pulley remover if the propeller cannot be removed manually 4 To install the propeller fan blade assembly see Repair procedures 490 To remove the DC fan motor assembly 1 Remove the propeller fan blade assembly from the DC fan motor assembly see Repair pro...

Page 91: ...x 5 Install a new tie strap to fix the DC fan motor harness to the switch box 6 Connect the DC fan motor connector to the connector on the main PCB 7 Lock the ferrite bead 8 Lock the ferrite bead 9 Install the propeller fan blade assembly see Repair procedures 490 To install the propeller fan blade assembly 1 Install the propeller fan blade assembly on the DC fan motor assembly CAUTION Do NOT inst...

Page 92: ...on cover DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 1 2 1 2 3 2 2 1 1 1 To remove the top plate INFORMATION This procedure is just an example and may differ on some details for your actual unit Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Loosen and remove the screws that fix the top plate ...

Page 93: ...etails for your actual unit Prerequisite Remove the top plate see 2 10 Plate work 492 1 Loosen and remove the screws that fix the front plate a a a a a a a Screw b Front plate 2 Remove the front plate 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 work 492...

Page 94: ...r on some details for your actual unit Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 2 10 Plate work 492 1 Remove the insulation on the upper side of the switch box a b a Insulation b Main PCB 2 Disconnect all connectors from the main PCB 3 Disconnect the electrical power supply wirin...

Page 95: ...2 ESIE18 01C 2020 07 f a d c b e a Electrical power supply wiring b Wire terminals c Screws d Wire clamp e Screws f Right side plate assembly 4 Remove the screws that fix the wire clamp 5 Remove the wire clamp 6 Remove the screws that fix the right side plate assembly 7 Cut the cable tie ...

Page 96: ...tch box from the outdoor unit 9 To install the switch box see 2 10 Plate work 492 To install the switch box INFORMATION This procedure is just an example and may differ on some details for your actual unit 1 Install the switch box on the correct location in the outdoor unit 2 Install the right side plate assembly on the outdoor unit and fix it using the screws ...

Page 97: ...he wire terminals 4 Install the wire clamp and fix it using the screws 5 Connect all connectors to the main PCB INFORMATION Use the wiring diagram and connection diagram for correct installation of the connectors see 5 2 Wiring diagram 4137 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 con...

Page 98: ... 71 Split Comfora R32 ESIE18 01C 2020 07 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 panel by the panel tabs on both sides and open it ...

Page 99: ... front panel at both sides and at the center until it clicks To remove the front panel 1 Hold the front panel by the panel tabs on both sides and open it a a Panel tabs a a Panel tabs 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 side in the same m...

Page 100: ...move the front grille CAUTION Wear adequate personal protective equipment protective gloves safety glasses when installing maintaining or servicing the system 1 Remove the front panel to remove the air filter 2 Remove 2 screws class 20 35 or 3 screws class 50 71 from the front grille 3 Push down the 3 upper hooks marked with a symbol with 3 circles a b a a Upper hook b Symbol with 3 circles 4 We r...

Page 101: ...ox 3 Open the electrical wiring box cover by pulling the protruding part on the top of the cover 4 Unhook the tab on the bottom and remove the electrical wiring box cover a a c b a 1 3 2 a Tab b Protruding part on the top of the cover c Screw 5 To re install the cover first hook the bottom tab onto the electrical wiring box and slide the cover into the 2 upper tabs 2 11 Reactor 2 11 1 Checking pro...

Page 102: ...actor will trip at a temperature of 115 C and will reset at a temperature of 95 C 6 Using a megger device of 500 V DC check the insulation resistance Make sure there is no earth leakage Is the measured insulation resistance correct Action Yes Continue with the next step No Replace the reactor see 2 11 2 Repair procedures 4102 7 Measure the continuity of the reactor Is the continuity measurement co...

Page 103: ...over of the compressor wire terminals a a Compressor wire terminals cover 4 Disconnect the connector 5 Remove the clip and remove the reactor from the compressor 6 To install the reactor see 2 11 2 Repair procedures 4102 To install the reactor 1 Install the reactor in the correct location and install the clip 2 Connect the reactor connector 3 Install the cover of the compressor wire terminals a a ...

Page 104: ...ct the motor connector from the indoor unit PCB 2 Measure the resistance between the following pins of the motor connector The measurements MUST be as shown in the table below Pins Measured resistance Ω 1 2 235 1 3 1 4 1 5 2 3 470 2 4 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 proced...

Page 105: ...p 5 To install the swing flap motor see 2 12 2 Repair procedures 4104 To install the swing flap motor 1 Install the swing flap motor in the correct location on the swing flap 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 Is the problem solved Action Yes No further actions requ...

Page 106: ...measurements MUST be as shown in the table below Pins Measured resistance Ω 1 2 380 1 3 1 4 1 5 2 3 760 2 4 2 5 3 4 3 5 4 5 Swing raster 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 raster motor see 2 13 2 Repair procedures 4106 2 13 2 Repair procedures To remove the swing raster m...

Page 107: ...ctors of the indoor unit fan motor the swing flap motor and the swing raster motor if equipped from the indoor unit PCB 4 Remove the screw and remove the switch box from the indoor unit 5 Remove the swing raster motor cover a b c a Swing raster motor cover b Swing raster motor assembly c Screw 6 Remove the 2 screws that fix the swing raster motor assembly to the indoor unit 7 Disconnect the swing ...

Page 108: ...eep the rod and bracket for reuse 11 To install the swing raster motor see 2 13 2 Repair procedures 4106 To install the swing raster motor 1 Install the swing raster motor on the bracket using the 2 screws Do NOT yet tighten the screws 2 Install the rod on swing raster motor shaft 3 Bring the swing raster motor assembly to the correct position in the indoor unit and guide the swing raster shaft in...

Page 109: ...lace 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 9 Route the connectors of the indoor unit fan motor swing flap motor and swing raster motor if equipped inside the switch box and connect them to the indoor unit PCB 10 Install and tighten the screw to secure the switch box 11 Install the heat exchanger thermistor in its holder 12 C...

Page 110: ...e thermistor correctly installed thermal contact between the thermistor and the piping Action Yes Perform an electrical check of the specific thermistor see Checking procedures 4110 No Correctly install the thermistor see Repair procedures 4112 To perform an electrical check of the specific thermistor 1 First perform a mechanical check of the thermistor see Checking procedures 4110 DANGER RISK OF ...

Page 111: ...9 81 9 42 9 06 8 71 8 37 8 05 7 75 7 46 71 72 73 74 75 76 77 78 79 3 32 3 21 3 11 3 01 2 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 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...

Page 112: ...In most cases the user interface allows to monitor the 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 interface display replace the applicable PCB Does the measured resistance of the thermistor match with the temperature determined resistance Action Yes T...

Page 113: ...the thermistor holder 6 Cut all tie straps that fix the thermistor harness 7 Disconnect the thermistor connector from the appropriate 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 procedure and 5 2 Wiring diagram 4137 ALWAYS replace the complete set of therm...

Page 114: ...1 Pull the clip and install the thermistor in the specific thermistor holder Make sure the clip is in the correct position blocking the thermistor c a b e d f f a Clip b Thermistor c Thermistor holder d Insulation e Thermistor wire f Tie strap 2 Connect the thermistor connector to the appropriate PCB INFORMATION Some of the thermistors are wired to the same connector See connector and pin informat...

Page 115: ...urther actions required No Return to the troubleshooting of the specific error and continue with the next procedure 2 14 2 Other thermistors Checking procedures To perform a mechanical check of the room thermistor 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 492 1 Loc...

Page 116: ...MATION The thermistors may vary according to the specific unit 3 Determine the thermistor resistance that matches the measured temperature Type 1 thermistor T C kΩ T C kΩ T C kΩ T C kΩ 20 197 81 10 39 96 40 10 63 70 3 44 19 18 17 16 15 14 13 12 11 186 53 175 97 166 07 156 80 148 10 139 94 132 28 125 09 118 34 11 12 13 14 15 16 17 18 19 38 08 36 30 34 62 33 02 31 50 30 06 28 70 27 41 26 18 41 42 43...

Page 117: ...e pins of the thermistor connector 6 Check that the measured resistance value matches the resistance determined through the measured temperature earlier step in the procedure E g R1T thermistor Measured temperature with contact thermometer 23 1 C Resistance value determined through temperature using the table for type 1 thermistors Resistance at 23 C 21 85 kΩ Resistance at 24 C 20 90 kΩ Disconnect...

Page 118: ...rerequisite Remove the required plate work see 2 10 Plate work 492 1 Locate the thermistor on the appropriate PCB 2 Measure the temperature using a contact thermometer INFORMATION The thermistors may vary according to the specific unit 3 Determine the thermistor resistance that matches the measured temperature Type 1 thermistor T C kΩ T C kΩ T C kΩ T C kΩ 20 197 81 10 39 96 40 10 63 70 3 44 19 18 ...

Page 119: ...he appropriate connection points of the thermistor 5 Check that the measured resistance value matches the resistance determined through the measured temperature earlier step in the procedure E g Measured temperature with contact thermometer 23 1 C Resistance value determined through temperature using the table for type 1 thermistors Resistance at 20 C 24 3 kΩ Resistance at 25 C 19 4 kΩ Measure res...

Page 120: ...or unit PCB 2 Disconnect the connector of the room thermistor PCB from the indoor unit PCB 3 Press the latches to unlock and remove the room thermistor PCB from the indoor unit PCB 4 To install the room thermistor PCB see Repair procedures 4112 To install the room thermistor PCB 1 Install the room thermistor PCB in the correct location on the indoor unit PCB 2 Connect the connector of the room the...

Page 121: ... 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 troubleshooting of the specific error and continue with the next procedure No Adjust the power supply see 3 1 2 Repair procedures 4122 To check the power supply to the indoor unit Prerequisite Stop the unit operation via the user interface P...

Page 122: ...d 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 the power supply 1 Make sure that the power source is in line with the requirements described in the databook 2 Adjust the power supply within 50 Hz 3 Is the problem solved Action Yes No further actions required No Return to the trou...

Page 123: ...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 order To check if the stop valves are open Prerequisite Remove the required plate work see 2 10 Plate work 492 1 Remove the caps a a b c a Cap b Liquid stop valve c Gas stop valve 2 Check if the stop valves are completely open The refrigeran...

Page 124: ...perature difference is measured 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 temperature drop before and after the expansion valve can be normal however excessive ice is indicating a malfunction of the expansion valve or internal obstruction of the val...

Page 125: ...ing Proper 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 valve High pressure drops or rises immediately after the overload control is complete Low pressure rises due to decreased frequency Frequency comes to the minimum level The electronic expansion...

Page 126: ...Operating frequency comes to the lowest level Heating Frequency Low pressure High pressure Proper amount Higher degree of shortage Degree of refrigerant shortage To maintain low pressure frequency initially increases due to the capacity control Frequency drops due to the low pressure drooping control High pressure is maintained at a constant level Frequency comes to the minimum level Discharge pip...

Page 127: ...ocedures 4127 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 Perform a pressure test in line with local legislation Is the pressure in the refrigerant circuit correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Replace the leaking part of t...

Page 128: ...e problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To recuperate the refrigerant Prerequisite Stop the unit operation via the user interface 1 Manually open all expansion valves 2 Connect the vacuum pump manifold recovery unit and refrigerant bottle to the service port of the refrigerant circuit as sho...

Page 129: ...g to the refrigerant and unit type Make sure to use a digital scale no charging cylinder Execute correct vacuum drying procedure after repair 0 1 MPa 760 mm Hg 750 Torr 1 bar for at least 1 hour Connect the unit according to the available service ports Use related field setting where necessary to open expansion valve solenoid valve To perform refrigerant pump down operation The unit is equipped wi...

Page 130: ...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 walls and cause cracking of the pipe Make sure the flare has the correct size use a flare gauge Make sure no particles remain in the piping Apply just a drop of refrigerant oil on the inner surface of the flare Make sure the flare c...

Page 131: ... 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 Check for the presence of object s near the indoor unit that may block the airflow Remove the object s as needed Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and ...

Page 132: ...red No Return to the troubleshooting of the specific error and continue with the next procedure 4 2 To clean the indoor unit heat exchanger 1 Straighten the hair fins 2 Clear the indoor unit heat exchanger from dust leaves using a fin comb or compressed air N2 CAUTION Avoid bending or damaging the hair fins of the indoor unit heat exchanger during the cleaning process Is the problem solved Action ...

Page 133: ...vacuum cleaner 5 Soak in lukewarm water for about 10 to 15 minutes INFORMATION If the dust does NOT come off easily wash the air filters with a neutral detergent diluted in lukewarm water Dry the air filters in the shade Be sure to remove the titanium apatite deodorising filter It is recommended to clean the air filters every 2 weeks ATXP M FTXP M 6 Push the tab at the centre of each air filter th...

Page 134: ...er or clean them with a vacuum cleaner 10 Soak in lukewarm water for about 10 to 15 minutes INFORMATION If the dust does NOT come off easily wash the air filters with a neutral detergent diluted in lukewarm water Dry the air filters in the shade Be sure to remove the titanium apatite deodorising and silver particle filters It is recommended to clean the air filters every 2 weeks Is the problem sol...

Page 135: ...Service manual 135 ATXP20 35 FTXP20 71 ARXP20 35 RXP20 71 Split Comfora R32 ESIE18 01C 2020 07 Is the problem solved Action No Return to the troubleshooting of the specific error and continue with the next procedure ...

Page 136: ...tailed information setting mode Indoor unit See the installer reference guide on business portal for more information 5 1 2 Detailed information setting mode Outdoor unit See the installer reference guide on business portal for more information 5 1 3 Detailed information setting mode Remote controller See the installer reference guide on business portal for more information ...

Page 137: ... Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote control Wireless remote control Horizontal Horizontal Vertical Vertical 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective earth A Rectifier Field wire NOTES BLK Black BLU Blue BRN Brown GRN Green ORG Or...

Page 138: ...board R1T Room thermistor R2T Suction pipe thermistor S6 S602 Connector S1W Operation switch V2 Varistor X1M Terminal strip Z C Ferrite core FTXP20 35M9 1 Wiring diagram English Translation Wiring diagram Wiring diagram Indoor Indoor Outdoor Outdoor Transmission circuit Transmission circuit Signal receiver Signal receiver Wireless remote control Wireless remote control Horizontal Horizontal Vertic...

Page 139: ...w Caution When the main power is turned off and then back on again operation will resume automatically 3 Legend A1P A4P Printed circuit board BZ Buzzer FG Frame ground FU1 Fuse H Harness IPM Intelligent power module LED 1 LED 2 Light emitting diode M1F Fan motor M S Swing flap motor MR Magnetic relay R1T Room thermistor R2T Suction pipe thermistor S6 S602 Connector S1W Operation switch V2 Varistor...

Page 140: ...ol Wireless remote control Horizontal Horizontal Vertical Vertical 2 Notes English Translation Connection X1M Main terminal Field supply PCB Protective earth Field wire NOTES BLK Black RED Red BLU Blue WHT White GRN Green YLW Yellow ORG Orange Caution 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 ...

Page 141: ...35 RXP20 71 Split Comfora R32 ESIE18 01C 2020 07 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 Diode bridge H1O BZ Buzzer C Capacitor SR WLU Signal receiver ...

Page 142: ... diagram Wiring diagram Indoor Indoor Outdoor Outdoor Condenser Condenser Discharge Discharge 2 Notes English Translation Note Note Connection X1M Main terminal Field supply PCB Protective earth Field wire NOTES 1 Refer to the nameplate for the power requirements 3 Legend C Capacitor D401 D402 Diode DB1 Diode bridge FU2 FU3 Fuse IPM Intelligent power module K30R K10R MR4 Magnetic relay L1R Reactor...

Page 143: ... Thermistor Y1E Electronic expansion valve Z C Noise filter ferrite core Z F Noise filter RXP50 71L RXP50 71M 1 Wiring diagram English Translation Wiring diagram Wiring 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 Black BLU Blue BRN Brown GRN Green ...

Page 144: ...lligent 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 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 Varistor X11A Connector X1M Terminal strip Y1E Electronic expansion valve Y...

Page 145: ...9 5CuT 9 5CuT 6 4CuT a b c d R2T M1F a Field piping liquid Ø6 4 mm flare connection b Field piping gas Ø9 5 mm flare connection c Crossflow fan d Heat exchanger M1F Fan motor R2T Thermistor heat exchanger Heating Cooling INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found in the technica...

Page 146: ...1F a Field piping liquid Ø6 4 mm flare connection b Field piping gas Ø9 5 mm flare connection c Crossflow fan d Heat exchanger M1F Fan motor R2T Thermistor heat exchanger Heating Cooling INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found in the technical data book ...

Page 147: ...ield piping liquid Ø6 4 mm flare connection b Field piping gas Ø12 7 mm flare connection c Crossflow fan d Heat exchanger e Distributor M1F Fan motor R2T Thermistor heat exchanger Heating Cooling INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found in the technical data book ...

Page 148: ...uid Ø6 4 mm flare connection b Field piping gas Ø9 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 outdoor air R2T Thermistor heat exchanger R3T Thermistor compressor discharge Y1E Electronic expansion valve Y1S Solenoid valve 4 way valve Cooling Heating INFORMATION The...

Page 149: ...e with service port gas e Muffler with filter f Heat exchanger g Accumulator h Muffler S1PH High pressure switch M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T Thermistor compressor discharge Y1E Electronic expansion valve Y1S Solenoid valve 4 way valve Cooling Heating INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the ...

Page 150: ...4 mm flare connection b Field piping gas Ø12 7 mm flare connection c Stop valve liquid d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter i Heat exchanger j Accumulator M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T Thermistor compressor discharge S1PH High pressure switch Y1E Electronic expansion valve Y1S Solenoid valve 4 way valve He...

Page 151: ...d piping liquid Ø6 4 mm flare connection b Field piping gas Ø12 7 mm flare connection c Stop valve liquid d Stop valve gas e Muffler f Liquid receiver g Filter h Muffler with filter i Heat exchanger j Accumulator M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T Thermistor compressor discharge S1PH High pressure switch Y1E Electronic expansion valve Y1S Solenoid v...

Page 152: ... with service port gas e Muffler with filter f Heat exchanger g Accumulator h Muffler S1PH High pressure switch M1C Compressor M1F Fan R1T Thermistor outdoor air R2T Thermistor heat exchanger R3T Thermistor compressor discharge Y1E Electronic expansion valve Y1S Solenoid valve 4 way valve Cooling Heating INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the u...

Page 153: ...Split Comfora R32 ESIE18 01C 2020 07 5 4 Component overview 5 4 1 Component overview Indoor unit ATXP L FTXP L a b c d e f h g a Heat exchanger b Heat exchanger thermistor R2T c Fan motor d Swing flap e Swing flap motor f Room thermistor R1T PCB g Switch box h Indoor unit PCB ...

Page 154: ... RXP20 71 Split Comfora R32 ESIE18 01C 2020 07 ATXP M FTXP M a b c d e f h g i j a Heat exchanger b Heat exchanger thermistor R2T c Fan motor d Swing flap e Swing flap motor f Room thermistor R1T PCB g Switch box h Indoor unit PCB i Swing raster motor j Swing raster ...

Page 155: ...e f g h m m a Air thermistor R1T j Service PCB b Heat exchanger k High pressure switch only for RXP50 71L RXP50 71M and ARXP20 35M c Expansion valve l Discharge pipe thermistor R3T d Heat exchanger thermistor R2T m Muffler e Liquid receiver n Accumulator f Stop valve with service port gas o Compressor g Stop valve liquid p Fan motor h 4 way valve coil q Fan i Main inverter PCB ...

Page 156: ...5 Technical data Service manual 156 ATXP20 35 FTXP20 71 ARXP20 35 RXP20 71 Split Comfora R32 ESIE18 01C 2020 07 5 5 Field information report See next page ...

Page 157: ...ation 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 address Site address Your reference Date of visit Claim information Title Problem description Error code Trouble date Problem frequency Investigation steps done Insert picture of the trouble Current situat...

Page 158: ...PCB 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 Space heating control leaving water temperature room thermostat external room thermostat Space heating setpoint Domestic hot water control reheat only schedule only reheat schedule Domestic hot water ...

Page 159: ...le 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 the button Service tools An overview of the available service tools for the different products is shown Also additional information on the service tools instruction latest software can be found here ...

Page 160: ...perature in heating operation INFORMATION When there is a big difference between the indoor room temperature and the set temperature in heating mode adjust the target set temperature field setting Target temperature remote controller set temperature 2 5 C For example Remote controller set temperature 20 C Target temperature 20 C 2 5 C 22 5 C Thermo off temperature 24 5 C 1 Press and simultaneously...

Page 161: ...tart default setting It is possible to switch OFF auto restart For example after a long power failure generators have to start up As there is limited energy and the air conditioners do NOT have priority it is recommended to switch OFF auto restart 1 Press and simultaneously 2 Press 3 Select SU 4 Press to confirm 5 Press 6 Select 10 7 Press to confirm 8 Press 9 Select 0 0 fan ON 1 fan OFF 10 Press ...

Page 162: ... 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 when the temperature drops below 20 C and start back up once the temperature rises again 2 Below is an overview of the other jumpers settings J5 No function for this unit J8 Cold region setting changing the operating range from 10 C t...

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