Daikin ARY20DV2 Service Manual Download Page 68 | Manualshive

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SiBE01-503

Troubleshooting

Service Diagnosis

59

4.3

Freeze-up Protection Control

or

High Pressure Control

Remote
Controller
Display

A5

Method of
Malfunction
Detection

High pressure control

During heating operations, the temperature detected by the indoor heat exchanger
thermistor is used for the high pressure control (stop, outdoor fan stop, etc.)

Freeze-up protection control (operation halt) is activated during cooling operation according
to the temperature detected by the indoor unit heat exchanger thermistor.

Malfunction
Decision
Conditions

High pressure control

During heating operations, the temperature detected by the indoor heat exchanger
thermistor is above 63°C (FTYN models) or 65°C (ATY models).

Freeze-up protection
When the indoor unit heat exchanger temperature is below 0°C during cooling operation.

Supposed
Causes

Operation halt due to clogged air filter of the indoor unit.

Operation halt due to dust accumulation on the indoor unit heat exchanger.

Operation halt due to short-circuit.

Detection error due to faulty indoor unit heat exchanger thermistor.

Detection error due to faulty indoor unit PCB.

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Summary of Contents for ARY20DV2

Page 1: ...SiBE01 503 SPLIT Pair D Series Applied Models zNon Inverter Pair Heat Pump ...

Page 2: ...SiBE01 503 Table of Contents i Non Inverter Pair D Series zHeat Pump Indoor Unit FTYN25DV3B ATY20DV2 FTYN35DV3B ATY25DV2 ATY35DV2 Outdoor Unit RYN25DV3B ARY20DV2 RYN35DV3B ARY25DV2 ARY35DV2 ...

Page 3: ...18 1 6 Night Set Mode 19 1 7 POWERFUL Operation 20 1 8 Other Functions 21 2 Function of Thermistor 22 3 Control Specification 23 3 1 Four Way Valve Switching 23 3 2 3 Minutes Standby 23 3 3 Compressor Protection Function 23 3 4 Fan OFF Delay 23 3 5 Freeze up Protection Control 23 3 6 Heating Peak cut Control 24 3 7 Liquid Compression Protection Function 24 3 8 Defrost Control 25 Part 5 System Conf...

Page 4: ...al Procedure 71 1 Indoor Unit 72 1 1 Removal of Air Filter 72 1 2 Removal of Front Grille 75 1 3 Removal of Horizontal Blades Vertical Blades 78 1 4 Removal of Electrical Parts Box PCB Swing Motor 80 1 5 Removal of Heat Exchanger 86 1 6 Install of Drain Plug 89 1 7 Removal of Fan Rotor Fan Motor 90 2 Outdoor Unit 94 2 1 Removal of Panels 94 2 2 Removal of Bellmouth and Left Side Plate 96 2 3 Remov...

Page 5: ...SiBE01 503 iv Table of Contents Index i Drawings Flow Charts iii ...

Page 6: ...plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the dischargin...

Page 7: ...the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient streng...

Page 8: ...t be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When replacing the coin battery in the remote controller be sure to disposed of the old batte...

Page 9: ...ng and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet ...

Page 10: ...SiBE01 503 List of Function 1 Part 1 List of Function 1 Functions 2 ...

Page 11: ... Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display 1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual Flexible Voltage Correspon...

Page 12: ...e Worry Free Reliability Durability Auto Restart after Power Failure 3 Step Airflow H P Only Self Diagnosis Digital LED Display Comfort Control Auto Fan Speed Wiring Error Check Indoor Unit Silent Operation Anticorrosion Treatment of Outdoor Heat Exchanger Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual Flexibility Multi Split Split Type Compatible Indoor Unit Intelligent Eye Quick...

Page 13: ...Functions SiBE01 503 4 List of Function ...

Page 14: ...SiBE01 503 Specifications 5 Part 2 Specifications 1 Specifications 6 ...

Page 15: ...Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 19 0 19 0 19 0 19 Power Consumption Rated W 40 40 40 40 Power Factor 92 92 92 92 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm 260 840 330 260 840 330 Weight kg 9 9 Gross Weight kg 11 11 Operation So...

Page 16: ...wnward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current A 0 19 0 19 0 19 0 19 Power Consumption W 40 40 40 40 Power Factor 96 96 96 96 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm 260 840 330 260 840 330 Weight kg 9 9 Gross Weight kg 11 11 Operation Sound H M L dBA ...

Page 17: ... Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current A 0 19 0 19 Power Consumption W 40 40 Power Factor 96 96 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 260 840 330 Weight kg 9 Gross Weight kg 11 Operation Sound H M L dBA 39 34 29 39 34 29 Outdoor Units ARY35DV2 Casing Color Ivory White Compressor Typ...

Page 18: ...SiBE01 503 Printed Circuit Board Connector Wiring Diagram 9 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 10 1 1 Indoor Unit 10 ...

Page 19: ...onnector for signal receiver PCB 8 S32 Connector for indoor heat exchanger thermistor 9 S33 Connector for outdoor heat exchanger thermistor 10 H1 Connector for compressor outdoor unit 11 H2 H4 Connector for four way valve outdoor unit 12 H3 Connector for fan motor outdoor unit 13 H5 Connector for power supply outdoor unit 1 V1 V2 Varistor 2 JA Address setting jumper JC Power failure recovery funct...

Page 20: ...rcuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 11 Control PCB Signal Receiver PCB S4 S5 S27 LED A J30 JC JA S32 R4670 S33 S6 S7 H5 H4 H3 V2 S1 H2 S2 V1 FU1 H1 LED1 SW1 LED2 S26 RTH R4671 ...

Page 21: ...Printed Circuit Board Connector Wiring Diagram SiBE01 503 12 Printed Circuit Board Connector Wiring Diagram ...

Page 22: ...tic Operation 17 1 5 Programme Dry Function 18 1 6 Night Set Mode 19 1 7 POWERFUL Operation 20 1 8 Other Functions 21 2 Function of Thermistor 22 3 Control Specification 23 3 1 Four Way Valve Switching 23 3 2 3 Minutes Standby 23 3 3 Compressor Protection Function 23 3 4 Fan OFF Delay 23 3 5 Freeze up Protection Control 23 3 6 Heating Peak cut Control 24 3 7 Liquid Compression Protection Function ...

Page 23: ...s The flap presses the warm air above the floor to reach the entire room Cooling Mode During cooling mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room Wide Angle Louvres The louvres made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution Auto Swing The following table explains the auto sw...

Page 24: ... setting button is set to automatic Note 1 During powerful operation fan operates at 1340 1390rpm 2 Fan stops during defrost operation 3 In time of thermostat OFF the fan rotates at following speed Cooling The fan keeps rotating at the set tap Heating The fan rotates at LL tap Air Flow Rate Control for Heating The following drawing explains the principle for fan speed control for heating Air Flow ...

Page 25: ...room temperature and the setpoint Cooling Thermostat OFF Room temperature setpoint 0 C Thermostat ON Room temperature setpoint 1 C Heating Thermostat OFF Room temperature setpoint 2 C Thermostat ON Room temperature setpoint 1 C OFF ON Room temperature setpoint R4725 1 C 0 C OFF OFF ON ON Room temperature setpoint R4726 2 C 1 C ...

Page 26: ...s correction value cooling 1 C heating 1 C Mode switching point and operation ON OFF point are as follows Cooling Heating Room temperature setpoint 2 C Heating Cooling Room temperature setpoint 2 C Cooling thermostat ON Room temperature setpoint 2 C Cooling thermostat OFF Room temperature setpoint 1 C Heating thermostat ON Room temperature setpoint 2 C Heating thermostat OFF Room temperature setpo...

Page 27: ...adjustment and fan adjustment buttons are inoperable in this mode Details of the Control The microcomputer automatically sets the target temperature and fan setting L tap Target temperature is determined as follows Room temperature 18 C Target temperature room temperature at startup Room temperature 18 C Target temperature 18 C Room temperature target temperature Compressor ON ON OFF OFF L tap L t...

Page 28: ...g the room at the set temperature for the first one hour then automatically lowers the temperature setting slightly in the case of heating or raises it slightly in the case of cooling for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Heating Operation Cooling Operation Setpoin...

Page 29: ... pushed the fan speed and the target temperature will be converted to the following states for 20 minutes Ex POWERFUL operation in cooling mode Operation mode Fan speed Target temperature Cooling HH tap 18 C Heating HH tap 30 C R4731 Target temp Fan Set temp 18 C Powerful ON Powerful OFF HH tap Set tap It counts 20 min also in the remote controller Ending condition or in 1 to 3 1 After the lapse o...

Page 30: ... 8 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit The filter traps microscopic particles decompose odours and even deactivates bacteria and viruses It lasts for three years without replacement if washed about once every six months 1 8 5 Mold Proof Air Filte...

Page 31: ...er thermistor is used for high pressure control during cooling operation B Indoor Heat Exchanger Thermistor DCN 1 The indoor heat exchanger thermistor is used to prevent freezing During the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation must be halted Four way valve Compressor R4733 A B ...

Page 32: ...mpressor for 3 minutes after turning it off except when defrosting 3 3 Compressor Protection Function When the compressor turns ON it keeps running at least 120 seconds except when defrosting 3 4 Fan OFF Delay The fan stops 30 seconds after the compressor stops except when defrosting 3 5 Freeze up Protection Control Outline During cooling dry operation freeze up protection control is activated acc...

Page 33: ...le controlling The compressor halts The outdoor fan switches ON OFF according to the temperature of the indoor heat exchanger Conditions for ending Temperature of the indoor heat exchanger 42 C or Cooling or dry mode starts or The operation stops 3 7 Liquid Compression Protection Function In order to obtain the dependability of the compressor the outdoor fan switches ON OFF according to the temper...

Page 34: ...cle to prevent the outdoor heat exchanger being frosted The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing Detail Time chart for 35 class Compressor Heating Defrosting Heating Four way valve Outdoor unit fan Indoor unit fan ON OFF ON OFF ON OFF ON OFF 73sec 86sec 86sec Hot start function 73sec R4734 ...

Page 35: ...Control Specification SiBE01 503 26 Functions and Control ...

Page 36: ...on 28 2 Instructions 29 2 1 Safety Precautions 29 2 2 Names of Parts 31 2 3 Preparation before Operation 34 2 4 AUTO DRY COOL HEAT FAN Operation 37 2 5 Adjusting the Air Flow Direction 39 2 6 POWERFUL Operation 40 2 7 TIMER Operation 41 2 8 Care and Cleaning 43 2 9 Troubleshooting 46 ...

Page 37: ...ever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing ov...

Page 38: ... out repairs accompanying adding refrigerant check the content of the repairs with our service staff Do not attempt to install the air conditioner by your self Incorrect work will result in water leakage electric shocks or fire For installation consult the dealer or a qualified technician In order to avoid electric shock fire or injury if you detect any abnormally such as smell of fire stop the op...

Page 39: ...nage Incomplete draining may cause wetting of the building furniture etc Do not operate the air conditioner with wet hands Do not wash the indoor unit with excessive water only use a slightly wet cloth Do not place things such as vessels containing water or anything else on top of the unit Water may pene trate into the unit and degrade electrical insulations resulting in an electric shock To insta...

Page 40: ...SiBE01 503 Instructions System Configuration 31 2 2 Names of Parts 4 Names of parts Indoor Unit ON OFF 1 3 4 8 9 10 13 14 7 11 12 2 5 6 ...

Page 41: ...tion Push once again to stop it This switch is useful when the remote controller is missing Pressing the switch in an emergency allows you to select cooling or heating page 11 The operation mode refers to the following table 12 Operation lamp green 13 TIMER lamp yellow page 14 14 Signal receiver It receives signals from the remote controller When the unit receives a signal you will hear a short be...

Page 42: ...n page 13 4 ON OFF button Press this button once to start operation Press once again to stop it The button glows even in dark rooms 5 TEMPERATURE adjustment buttons It changes the temperature setting 6 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN page 10 7 FAN setting button It selects the air flow rate setting 8 SWING button page 12 9 ON TIMER button page 15 10 OFF TI...

Page 43: ... use batteries of the same type and replace the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote controller display begins to fade or if reception deteriorates please replace with new alkali batteries Do not use manganese batteries The attached batteries are provided for the initial use of the sy...

Page 44: ...nit 2 Fix the holder to a wall a pillar or similar location with the screws procured locally 3 Place the remote controller on the bottom tabs of the remote controller holder and push ATTENTION About remote controller Never expose the remote controller to direct sunlight Dust on the signal transmitter or receiver will reduce the sensitivity Wipe off dust with soft cloth Signal communication may be ...

Page 45: ...riod for example in spring or autumn turn the breaker OFF If the flap opens turn on the breaker to close it Use the air conditioner in the following conditions Operation outside this humidity or temperature range may cause a safety device to disable the system Recommended temperature setting For cooling 26 C 28 C For heating 20 C 24 C Mode Operating conditions If operation is continued out of this...

Page 46: ...tton and select a operation mode Each pressing of the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Press ON OFF button again Then OPERATION lamp goes off To change the temperature setting 4 Press TEMPERATURE adjustment button DRY or FAN mode AUTO or COOL or HEAT mode The temperature setting is not variabl...

Page 47: ... in lower outdoor temperatures If the heating effect is insufficient it is rec ommended to use another heating appliance in combination with the air conditioner The heat pump system heats the room by circulating hot air around all parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower ...

Page 48: ...b on the left side and the right side blades Notes on flaps and louvers angles When SWING button is selected the flaps swinging range depends on the operation mode See the figure ATTENTION Always use a remote controller to adjust the flaps angle If you attempt to move it forcibly with hand when it is swinging the mechanism may be broken Be careful when adjusting the louvers Inside the air outlet a...

Page 49: ...n with the settings which were used before POWERFUL operation When using POWERFUL operation there are some functions which are not available is displayed on the LCD To cancel POWERFUL operation 2 Press POWERFUL button again disappears from the LCD NOTE Notes on POWERFUL operation POWERFUL operation is not available in modes other than cooling or heating In COOL and HEAT mode To maximize the coolin...

Page 50: ...FF TIMER operation 1 Press OFF TIMER button The time changes in 1 hour increments every time the button is pushed with a maximum of 9 hours To cancel the OFF TIMER operation 2 Press CANCEL button The TIMER lamp goes off NOTE NIGHT SET MODE When the OFF TIMER is set the air conditioner automatically adjusts the temperature setting 1 0 C up in COOL 1 0 C down in HEAT to prevent excessive cooling hea...

Page 51: ...he TIMER lamp goes off To combine ON TIMER and OFF TIMER A sample setting for combining the two timers is shown below ATTENTION In the following cases set the timer again After a breaker has turned OFF After a power failure After replacing batteries in the remote controller 1 2 ON OFF The TIMER lamp lights up Display Example The air conditioner is currently operating You want to have it run for an...

Page 52: ...he front panel Set the 3 keys of the front panel into the slots and push them in all the way Close the front panel slowly and push the panel at the 3 points 1 on each side and 1 in the middle Check to see if the rotating axis in the upper center section is moving CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When removing or attachin...

Page 53: ... wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apatite Photocatalytic Air Purifying Filter The Titanium Apatite Photocatalytic Air Purifying Filter can be renewed by washing it with water once every 6 months We recommend replacing it once every 3 years Maintenance 1 Remove dust with a v...

Page 54: ...s and the outlets of the indoor unit and the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the ser vice shop if this is the case Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may ...

Page 55: ...er or steam when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit This happens when the air in the room is cooled into mist by the cold air flow during cooling operation The indoor unit gives out odour This happens when smells of the room furniture or cigar...

Page 56: ...he windows and doors closed Are the air flow rate and the air direction set appropriately Operation stops suddenly OPERATION lamp flashes Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the air conditioner with the re...

Page 57: ...ectly you will help to prevent potential negative consequences for the environment and human health Please contact the installer or local authority for more information Batteries must be removed from the remote controller and disposed of separately in accordance with relevant local and national legislation In certain operating conditions the inside of the air conditioner may get foul after several...

Page 58: ...d notifies with a long beep NOTE Fault diagnosis CODE MEANING SYSTEM 00 NORMAL INDOOR UNIT A1 INDOOR PCB DEFECTIVENESS A5 HIGH PRESSURE CONTROL OR FREEZE UP PROTECTOR A6 FAN MOTOR FAULT C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR C9 FAULTY SUCTION AIR TEMPERATURE SENSOR OUTDOOR UNIT F6 HIGH PRESSURE CONTROL IN COOLING J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR 1 A short beep and two consecutive b...

Page 59: ...Instructions SiBE01 503 50 System Configuration ...

Page 60: ...it PCB Abnormality 58 4 3 Freeze up Protection Control or High Pressure Control 59 4 4 Fan Motor or Related Abnormality AC motor 61 4 5 Thermistor or Related Abnormality Indoor Unit 62 4 6 High Pressure Control in Cooling 63 4 7 Thermistor or Related Abnormality Outdoor Unit 65 5 Check 67 5 1 Thermistor Resistance Check 67 5 2 Installation Condition Check 68 5 3 Outdoor Unit Fan System Check 69 5 ...

Page 61: ... of the indoor or outdoor unit is activated or when the thermistor malfunctions disabling equipment operation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation Lamp ON OFF Indicator lamps Operation lamp green TIMER lamp yellow ON OFF button R4112 ...

Page 62: ...failure of 2 to 10 cycles can stop air conditioner operation Operation lamp OFF Check the outdoor air temperature Heating operation cannot be used when the outdoor air temperature is 20 C or higher and cooling operation cannot be used when the outdoor air temperature is below 15 C RYN models or 10 C ARY models Diagnosis with remote controller indication 57 Equipment operates but does not cool or d...

Page 63: ... indication changes in the sequence shown below and notifies with a long beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute No Code No Code No Code 1 00 12 F6 23 A1 2 U4 13 C7 24 E1 3 L5 14 A3 25 UA 4 E6 15 H8 2...

Page 64: ...the digit does not blink 2 Press the TEMP button Press TEMP or TEMP and change the digit until you hear the sound of beep or pi pi 3 Diagnose by the sound pi The number of tens does not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code See 7 4 Enter the diagnosis mode again Press the MODE button R4735 ...

Page 65: ...he sound pi The both numbers of tens and units do not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code 7 Determine the error code The digits indicated when you hear the beep sound are error code Error codes and description Refer to page 57 8 Exit from the diagnosis mode Press the MODE button R4739 R47...

Page 66: ...e System 00 Normal Indoor Unit A1 Indoor unit PCB abnormality 58 A5 Freeze up protection control or high pressure control 59 A6 Fan motor or related abnormality AC motor 61 C4 Heat exchanger thermistor abnormality 62 C9 Room temperature thermistor abnormality 62 Outdoor Unit F6 High pressure control in cooling 63 J6 Heat exchanger thermistor or related abnormality 65 ...

Page 67: ...ero cross detection in approximately 1 25 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Connector connection check note YES Is it normal NO Correct connections Replace PCBs R1400 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Model Typ...

Page 68: ...re detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is above 63 C FTYN models or 65 C ATY models Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Causes Operation halt due to clogged ...

Page 69: ...umulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passage Clean the air filter Clean the heat exchanger Replace the indoor unit PCB Replace the thermistor replace the indoor unit PCB Caution Be sure to turn off power switch before connect or disconnect con...

Page 70: ...ror due to faulty indoor unit PCB Troubleshooting Check No 16 Refer to P 69 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate smoothly Is there an output Is it at the rated voltage Is there conductivity NO Check the capacitor s conductivity Check the fan motor voltage immediately after re start Is it at the rated voltage Check the fan motor voltage N...

Page 71: ...istor above about 100 C less than 670Ω Room temperature thermistor above about 70 C less than 1 7kΩ Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 06 Refer to P 67 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor Check the connector connection YES Correct the connection Replace the thermistor Replace the indoor unit PCB Replace t...

Page 72: ...g sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 63 C RYN models or 65 C ARY models Deactivated when the temperature drops below 48 C RYN models or 50 C ARY models Supposed Causes The installation space is not large enough Faulty outdoor unit fan Faulty heat exchanger...

Page 73: ... damage may be occurred Replace the fan motor Repair the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Change the air outlet grille position Change the installation location Clean the heat exchanger Check the installation space Check No 09 Outdoor fan check Judgment Check No 06 Heat exchanger thermistor check Check No 07 Installation condition check Abnormal N...

Page 74: ...tected by checking the thermistor input voltage to the microcomputer A thermistor error is detected by checking the temperature Malfunction Decision Conditions The thermistor input is above 4 96 V or below 0 04 V with the power on Outdoor heat exchanger thermistor above about 100 C less than 670Ω Supposed Causes Connector in poor contact Thermistor defective Indoor unit PCB defective ...

Page 75: ...rmistor Replace the indoor unit PCB R4743 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again on remote controller NO YES YES YES NO Indoor heat exchanger thermistor functioning NO Connector or thermistor disconnected NO YES Normal Check No 06 Check the thermistor resistance value Check No 06 Check the indoor heat ex...

Page 76: ...PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 10kΩ B 3950 Temperature C 20 99 0 kΩ 15 74 0 10 56 0 5 42 0 0 32 0 5 25 0 10 20 0 15 16 0 20 13 0 25 10 0 30 8 0 35 7 0 40 5 3 45 4 0 50 3 5 10 75 50 25 R4744 ...

Page 77: ...er Change the installation location or direction Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 46 C or lower Check the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the opposite direction R4745 Abnormal YES YES YES Does the discharged air from other outdoor...

Page 78: ...B Æ Replace the PCB Failure of 2 Æ faulty Hall IC Æ Replace the fan motor Both 1 and 2 result Æ Replace the PCB Check the fan motor lead wire connector for secure connection Abnormal YES NO NO Continuity Are the resistance at connector leads 1 red black 2 white black Check the fan capacitor for continuity Does the outdoor fan rotate Does the outdoor unit fan start just after the power is turned on...

Page 79: ...Check SiBE01 503 70 Service Diagnosis ...

Page 80: ...Parts Box PCB Swing Motor 80 1 5 Removal of Heat Exchanger 86 1 6 Install of Drain Plug 89 1 7 Removal of Fan Rotor Fan Motor 90 2 Outdoor Unit 94 2 1 Removal of Panels 94 2 2 Removal of Bellmouth and Left Side Plate 96 2 3 Removal of Electrical Device Mounting Plate 97 2 4 Removal of Propeller Fan and Fan Motor 98 2 5 Removal of Sound Blanket 99 2 6 Removal of Partition Plate 101 2 7 Removal of C...

Page 81: ...rced cooling operation will be carried out for approx 15 minutes When the signal receiver catches a signal from the remote controller it produces beep sound and the operation lamp blinks 2 Remove the air filters 1 Pull protrusions on left and right sides of panel with fingers and open front grille all the way 2 Lift center section of air filter and disengage hooks Remove air filter by pulling forw...

Page 82: ...vided on the both sides of the unit s panel and open up the panel to the position higher than it will stop Support the front panel by one hand while remove the rotation axis at the upper center by the other hand And pull out the front panel forward to remove 2 Remove front panel from the unit Step Procedure Points ...

Page 83: ...Indoor Unit SiBE01 503 74 Removal Procedure 3 When restoring the air filter make sure that the projection parts on the panel are in the guide groove and then shut the panel Step Procedure Points ...

Page 84: ...re Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the service cover 1 Remove a service cover mounting screw Open service cover upward A switch for field setting is not provided in particular ...

Page 85: ...pped in the existing models are not provided 2 Disengage the two hooks on the upper part In case that the hooks are not pressed from above remove the front panel and then remove the grille while pushing the hook through a clearance between the front grille and the heat exchanger At the upper part there are two hooks in the left and the right Disengage the hooks by pressing knobs with a screwdriver...

Page 86: ...t Removal Procedure 77 3 The front grille can be removed in a manner to pull out the upper part forward and lift up the lower part When restoring the grille Make sure whether each hook is set as it was Step Procedure Points ...

Page 87: ...r turning off all power supplies before disassembling work Step Procedure Points 1 Remove the horizontal blades 1 Lift horizontal blade to open position Screw stoppers inside the flap which were equipped in the existing models are not provided 2 Disengage horizontal blade from blade retaining section 3 Bend blade slightly and remove it from the unit ...

Page 88: ...the blade to the tip while rotating it 2 Restore the two fixed parts of the horizontal blade onto the hook 2 Remove the vertical blades 1 Disengage the vertical blade s joint from the fixed plate 2 Remove the blade forward Five vertical blades are integrated with the joint rod so only one blade can t be exchanged Step Procedure Points ...

Page 89: ...ssembling work Step Procedure Points Remove the front grill 1 Remove the electrical parts box 1 Disconnect the connection wires 2 Disconnect the connectors of fan motor S1 and S7 Pay attention to the direction of the retainer of the thermistor so that the retainer will not touch the harness same as the existing models 3 Disconnect the connector of swing motor S6 4 Remove heat exchanger thermistor ...

Page 90: ...or Unit Removal Procedure 81 5 Remove a screw on the terminal strip The electrical parts box can be removed instead of disengaging the terminal strip 6 Remove a screw on the electrical parts box Step Procedure Points ...

Page 91: ...Indoor Unit SiBE01 503 82 Removal Procedure 7 Pull up the electrical parts box forward to remove A hook is provided on the behind Step Procedure Points ...

Page 92: ...circuit board PCB 1 Remove the shelter 2 Disengage the front plate of the electrical parts box Disengage the knobs by pushing the two hooks at the top and the bottom 3 Sliding to the left the front part of the electrical parts box can be removed Step Procedure Points ...

Page 93: ...Indoor Unit SiBE01 503 84 Removal Procedure 4 Disengage the four knobs on the back of the signal receiver PCB 5 Signal receiver PCB Step Procedure Points ...

Page 94: ...it board 3 Remove the swing motor assembly 1 To remove swing motor assembly remove two screws Manual adjusting for the vertical blades Provide a supporter so that the joint link will not drop off in case the horizontal blade assembly is removed Step Procedure Points S4 S5 S27 LED A J30 JC JA S32 R4673 S33 S6 S7 H5 H4 H3 V2 S1 H2 S2 V1 FU1 H1 ...

Page 95: ...nto refrigerating cycle Mixing of air or other gas causes abnormal temperature rise in refrigerating cycle and this results in pipe rupture or personal injuries Pay attention so that the residual drain will not make a floor dirty In case that a drain hose is buried inside a wall remove it after the drain hose in the wall is pulled out 1 Remove the drain hose Make curing so that the residual drain ...

Page 96: ...o an angle of 10 to 20 degrees Be careful to prevent pipe deformation 6 Disengage hooks located right and left side and pull heat exchanger forward The hooks are symmetrically placed in the right and the left Lift the heat exchanger slightly upward to the right and the left hook comes to be disengaged easily Step Procedure Points ...

Page 97: ...03 88 Removal Procedure 7 Lift and remove heat exchanger Caution When removing or re installing heat exchanger be sure to wear protective gloves or wrap heat exchanger with cloths Fins can cut fingers Step Procedure Points ...

Page 98: ...power supplies before disassembling work Step Procedure Points 1 Disconnect drain hose The drain pan is integrated with the bottom plate 2 Pull out the drain plug in the left on the drain pan by hand 3 Insert the drain hose Push it into the inner part firmly 4 Push the drain plug into the right by Allen wrench Push it into the inner part firmly ...

Page 99: ... 7 Removal of Fan Rotor Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the heat exchanger 1 To remove right side panel remove three screws ...

Page 100: ...SiBE01 503 Indoor Unit Removal Procedure 91 2 Disengage hook 3 Loosen the hexagon head set screw on the fan rotor Step Procedure Points ...

Page 101: ...Indoor Unit SiBE01 503 92 Removal Procedure 4 Remove the motor and fan rotor 5 Remove a screw on the left side panel Step Procedure Points ...

Page 102: ...oval Procedure 93 6 Disengage a hook from the backward 7 Since the fan bearing is made of rubber push it strongly off from the inside The bearing can be removed just as the left side plate is attached with Step Procedure Points ...

Page 103: ...moved when the fixed screw is removed As three hooks are provided at three portions slide the cover downward to remove The forced cooling operation in the pumping down mode can be carried out by pushing the operation switch on the main unit for five seconds The existing models can do it through the switch on the PC board just as well The layout of the connection ports for the flares has been chang...

Page 104: ...d screw in the rear of the top plate Once lift the top plate and then remove it forward The left side plate and the bellmouth can be removed all at once When restoring the top plate move it horizontally and get it down for the easy work 5 The front plate and the left side plate can be removed when the one fixed screw is removed Sectional view at the front Step Procedure Points Top plate Left side ...

Page 105: ...upplies before disassembling work Step Procedure Points 1 The bellmouth is attached with two screws and four hooks Remove the bellmouth beginning the front plate after removing the two screws which are set below 2 Remove the two screws and pull the bellmouth forward to remove as the four hooks are provided Slide the bellmouth in the arrow direction to disengage the hook B ...

Page 106: ...after turning off all power supplies before disassembling work Step Procedure Points 1 To remove the shelter 1 Remove the three fixed screws for removing the shelter 2 Remove the shelter 2 To remove the switch box 1 Remove all the harness 2 Remove two fixing screws of electrical device mounting plate 3 Remove the electrical device mounting plate ...

Page 107: ...oved when the washer faced nut M8 is removed Be sure to avoid forgetting to restore the shelter and to avoid losing or damaging it When restoring match the mark of the propeller fan with the D cut of the motor shaft The fan should be restored so that the mark z will be at upper part of the fan motor 2 Remove two screws for removing the fan motor The lead wires are disengaged by raising the hooks w...

Page 108: ... Points 1 To remove the right side plate 1 Remove the three screws for removing the right side plate 2 Lift the right side plate to disengage the hooks Insert the three hooks for the restoration 2 To remove the sound blanket Since the sound blanket is torn easily remove it carefully When restoring the sound blanket should pass the internal side of the piping 1 Untie the string of the sound blanket...

Page 109: ...E01 503 100 Removal Procedure 2 Pull out the sound blanket Since the sound blanket is torn easily remove it carefully When restoring sound blanket should pass the internal side of the piping Step Procedure Points R4750 ...

Page 110: ...g Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 To remove the partition plate 1 Disengage the lead wires from the wire clip 2 Remove the two screws fixing the partition plate 3 Pull the partition plate upward to remove ...

Page 111: ...Outdoor Unit SiBE01 503 102 Removal Procedure 4 When restoring the partition plate put the hook into the bottom frame Step Procedure Points ...

Page 112: ... turning off all power supplies before disassembling work Step Procedure Points 1 To remove the parts around the compressor Be careful so as not to burn the compressor terminals or the name plate 1 Remove the terminal cover the lead wires of the compressor and the partition plate so as not to be burnt out by a gas brazing machine ...

Page 113: ...l about pipes and so on which were heated up by a gas brazing machine so as not to get burnt on your hands Pay attention so that the heat exchanger s fins will not be burnt 3 Remove the nut by means of an open end wrench Begin your work after recognizing complete empty of refrigerant in the refrigerant circuit Be sure to apply nitrogen s permutation when heating up the brazing part 1 Remove the br...

Page 114: ...SiBE01 503 Others 105 Part 8 Others 1 Others 106 1 1 Trial Operation and Testing 106 1 2 Pump Down Operation 106 1 3 Jumper Settings 107 ...

Page 115: ...er in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to shut off the power to the air conditioner the system will restore the original operation mode when the circuit breaker is opened again 1 2 Pump Down Operation In order to protect the environment be sure to pu...

Page 116: ...etallic cover to remove it 4 claws on the electrical parts box Cut the jumper JA on PCB Wireless remote controller Cut the jumper J4 1 3 2 Jumper Setting R4758 Address J4 CUT EXIST 1 2 Metallic cover PCB Electric parts box Claws 4 points Wireless remote controller J4 CUT 2 ADDRESS JA EXIST 1 JA JC C1 C31 J30 JP11 ADDRESS Jumper On indoor control PCB Function When connected factory set When cut JC ...

Page 117: ...Others SiBE01 503 108 Others ...

Page 118: ...SiBE01 503 Appendix 109 Part 9 Appendix 1 Piping Diagrams 110 1 1 Indoor Units 110 1 2 Outdoor Units 111 2 Wiring Diagrams 113 2 1 Indoor Units 113 2 2 Outdoor Units 113 ...

Page 119: ...NG 4 8CuT 7 0CuT 9 5CuT HEAT EXCHANGER 7 0CuT 7 0CuT 4D048781 FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 7 9CuT CROSS FLOW FAN FAN MOTOR THERMISTOR ON HEAT EXCH M INDOOR UNIT REFRIGERANT FLOW HEATING COOLING 7 0CuT 7 0CuT 9 5CuT HEAT EXCHANGER 7 0CuT 7 0CuT 4D048782 FIELD PIPING FIELD PIPING 6 4CuT 12 7CuT 7 9CuT CROSS FLOW FAN FAN MOTOR THERMISTOR ON HEAT EXCH M INDOOR UNIT REFRIGERANT FLOW COOLING ...

Page 120: ... satisfaction M 06010 Delete the outdoor temperature thermistor from the service manual SiBE01 503 on page 111 and 112 Refer to the attached pages Case Model RYN25DV3B RYN35DV3B ARY20DV2 ARY25DV2 ARY35DV2 Delete outdoor temperature thermistor from drawing SiBE01 503 ...

Page 121: ...PING FIELD PIPING 6 4CuT 9 5CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 1 CAPILLARY TUBE 2 CHECK VALVE REFRIGERANT FLOW HEATING COOLING 3D048804 9 5CuT 6 4CuT 7 9CuT OUTDOOR UNIT PROPELLER FAN HEAT EXCHANGER 7 9CuT M COMPRESSOR 9 5CuT FOUR WAY VALVE ON HEATING 7 9CuT 7 9CuT ACCUMULATOR HEAT EXCHANGER THERMISTOR OUTDOOR TEMPERATURE THERMISTOR CAPILLARY TUBE 1 9 5CuT REFRIGERANT FLOW COOLING HEATIN...

Page 122: ...EFRIGERANT FLOW COOLING HEATING 9 5CuT 6 4CuT 6 4CuT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 1 CAPILLARY TUBE 2 CHECK VALVE GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE FIELD PIPING FIELD PIPING 6 4CuT 12 7CuT PROPELLER FAN M FOUR WAY VALVE ON HEATING COMPRESSOR ACCUMULATOR MUFFLER 3D048806 ...

Page 123: ...E ARREATER T1R TRANSFORMER V1 V2 VARISTOR TFU THERMAL FUSE MR1 MR4 MAGNETIC RELAY WHT BRN BLU BLK RED GRN YLW RED WHT BLK YLW YLW WHT RED CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN PROTECTIVE EARTH C20 RUNNING CAPACITOR Fu1 Fu2 Fu3 FUSE H1P H2P PILOT LAMP M1F FAN MOTOR 3D048079C indoor POWER SUPPLY ARY20 25 220V50Hz RYN25 35...

Page 124: ...or S R C M1C M1F 1 M 1 M POWER SUPPLY 220V 50Hz GRN YLW BLU BLU BLK BLU RED RED RED YLW WHT RED BLK RED NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS C1R C2R RUNNING CAPACITOR X10A CONNECTOR M1C COMPRESSOR MOTOR X1M X2M TERMINAL STRIP M1F FAN MOTOR Y1R REVERSING SOLENOIDE VALVE COIL R1T THERMISTOR PROTECTIVE EARTH F1U FUSE 3D048126A ...

Page 125: ... diagnosis mode 55 drain hose 86 89 drain plug 89 E electrical device mounting plate 97 electrical parts box 80 error codes 00 57 A1 58 A5 59 A6 61 C4 62 C9 62 F6 63 J6 65 F F6 63 fan motor 80 90 98 fan off delay 23 fan rotor 90 fan speed control 15 four way valve switching 23 freeze up protection control 23 59 front grille 75 front panel 73 front plate 95 FU1 10 functions 2 fuse 10 G gas piping 8...

Page 126: ...0 80 S2 10 S26 10 S27 10 S32 10 S33 10 S4 10 S5 10 S6 10 80 S7 10 80 safety precautions 29 self diagnosis digital display 21 service check function 54 service cover 75 shelter 83 97 signal receiver 72 signal receiver PCB 11 84 signal receiving sign 21 sound blanket 99 specifications 6 stop valve cover 94 SW1 10 swing motor 80 85 switch box 97 T terminal strip 58 81 thermistor function 22 heat exch...

Page 127: ...FF button on indoor unit 21 operation lamp location 52 outdoor unit fan system check 69 P piping diagrams ARY20DV2 111 ARY25DV2 111 ARY35DV2 112 ATY20DV2 110 ATY25DV2 110 ATY35DV2 110 FTYN25DV3B 110 FTYN35DV3B 110 RYN25DV3B 111 RYN35DV3B 111 POWERFUL operation 20 programme dry function 18 pump down operation 106 S signal receiver PCB 11 T thermistor 22 thermistor or related abnormality indoor unit...

Page 128: ...on product corrosion Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorized part...

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