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Outdoor Unit - RK(X)S42J2V1B

SiBE041101

199

Removal Procedure

Release the earth wire
from the hook.

Remove the 2 screws
and detach the 1 clip to
remove the radiation
shield plate.

Cut off the 5 clamps
and disconnect the wire
harnesses.

Step

Procedure

Points

(R8159)

(R12198)

Radiation shield plate

Clip

(R8161)

(R8162)

Содержание RKS42J2V1B

Страница 1: ...Service Manual Inverter Pair Wall Mounted Type J Series SiBE041101 Applied Models z Inverter Pair Cooling Only z Inverter Pair Heat Pump ...

Страница 2: ...ndoor Unit FTXS20J2V1B FTXS25J2V1B FTXS35J2V1B FTXS42J2V1B FTXS50J2V1B Outdoor Unit RKS20J2V1B RKS25J2V1B RKS35J2V1B RKS42J2V1B RKS50J2V1B zHeat Pump Indoor Unit FTXS20J2V1B FTXS25J2V1B FTXS35J2V1B FTXS42J2V1B FTXS50J2V1B Outdoor Unit RXS20J2V1B RXS25J2V1B RXS35J2V1B RXS42J2V1B RXS50J2V1B ...

Страница 3: ...tion Control 23 1 4 Fan Speed Control for Indoor Units 24 1 5 Program Dry Operation 25 1 6 Automatic Operation 26 1 7 Thermostat Control 27 1 8 NIGHT SET Mode 28 1 9 ECONO Operation 29 1 10 2 Area INTELLIGENT EYE Operation 30 1 11 Inverter POWERFUL Operation 32 1 12 Other Functions 33 2 Function of Thermistor 34 3 Control Specification 35 3 1 Mode Hierarchy 35 3 2 Frequency Control 36 3 3 Controls...

Страница 4: ...istor or Related Abnormality Indoor Unit 86 4 6 Signal Transmission Error between Indoor Unit and Outdoor Unit 87 4 7 Unspecified Voltage between Indoor Unit and Outdoor Unit 88 4 8 Outdoor Unit PCB Abnormality 89 4 9 OL Activation Compressor Overload 92 4 10 Compressor Lock 93 4 11 DC Fan Lock 94 4 12 Input Overcurrent Detection 95 4 13 Four Way Valve Abnormality 96 4 14 Discharge Pipe Temperatur...

Страница 5: ...eat Exchanger 152 1 8 Removal of Swing Motors 155 1 9 Removal of Fan Motor 159 2 Outdoor Unit RK X S20 25 35J2V1B 162 2 1 Removal of Outer Panels Fan Motor 162 2 2 Removal of Electrical Box 171 2 3 Removal of PCBs 174 2 4 Removal of Reactor Partition Plate 182 2 5 Removal of Sound Blankets 184 2 6 Removal of Four Way Valve 186 2 7 Removal of Compressor 189 3 Outdoor Unit RK X S42J2V1B 191 3 1 Remo...

Страница 6: ...hen 2 Units are Installed in 1 Room 243 4 3 Standby Electricity Saving 244 4 4 Facility Setting Jumper and Switch cooling at low outdoor temperature 245 4 5 Jumper and Switch Settings 246 5 Application of Silicon Grease to a Power Transistor and a Diode Bridge 247 Part 9 Appendix 248 1 Piping Diagrams 249 1 1 Indoor Unit 249 1 2 Outdoor Unit 250 2 Wiring Diagrams 254 2 1 Indoor Unit 254 2 2 Outdoo...

Страница 7: ...wer cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock 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 is discharged during the repair work ...

Страница 8: ...lectrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and cause injury Be sure to ...

Страница 9: ...heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire...

Страница 10: ...vent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the ...

Страница 11: ...e to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only Caution Icon Type of Information Description Note Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A cau...

Страница 12: ...SiBE041101 1 List of Functions Part 1 List of Functions 1 Functions 2 1 1 Cooling Only 2 1 2 Heat Pump 3 ...

Страница 13: ...flow Self Diagnosis Digital LED Display COMFORT AIRFLOW Operation Wiring Error Check Function Comfort Control Auto Fan Speed Anti Corrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit NIGHT QUIET Mode Automatic H P C O Compatible Indoor Unit OUTDOOR UNIT QUIET Operation Manual Flexible Power Supply Correspondence 2 Area ...

Страница 14: ...er Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check Function COMFORT AIRFLOW Operation Anti Corrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation H P C O Compatible Indoor Unit NIGHT QUIET Mode Automatic Flexible Power Supply Cor...

Страница 15: ...SiBE041101 Specifications 4 Part 2 Specifications 1 Specifications 5 1 1 Cooling Only 5 1 2 Heat Pump 7 ...

Страница 16: ...e Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 09 0 08 0 08 0 09 0 08 0 08 0 12 0 12 0 11 Power Consumption Rated W 18 18 18 18 18 18 26 26 26 Power Factor 90 9 97 8 93 8 90 9 97 8 93 8 98 5 94 2 98 5 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 295 800 215 295 800 215 29...

Страница 17: ...emovable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 11 0 11 0 11 0 12 0 12 0 11 Power Consumption Rated W 24 24 24 26 26 26 Power Factor 99 2 94 9 90 9 98 5 94 2 98 5 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 295 800 215 295 800 215 Packaged Dimensions H W D mm 289 870 366 289 870 366 Weight kg 10 10 Gross Weight kg 14 ...

Страница 18: ...ntal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 09 0 08 0 08 0 10 0 10 0 09 Power Consumption Rated W 18 18 18 21 21 21 Power Factor 90 9 97 8 93 8 95 5 91 3 97 2 Temperature Control Microcomputer Control Dimensions H W D mm 295 800 215 Packaged Dimensions H W D mm 289 870 366 Weight kg 9 Gross Weight kg 13 Operation Sound H M L SL dB A 38 32 25 22 38 33 28 25 So...

Страница 19: ...ard Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 09 0 08 0 08 0 10 0 10 0 09 0 12 0 12 0 11 0 13 0 13 0 12 Power Consumption Rated W 18 18 18 21 21 21 26 26 26 28 28 28 Power Factor 90 9 97 8 93 8 95 5 91 3 97 2 98 5 94 2 98 5 97 9 93 6 97 2 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 295 800 215 295 80...

Страница 20: ...lter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 11 0 11 0 11 0 14 0 14 0 13 0 12 0 12 0 11 0 15 0 14 0 14 Power Consumption Rated W 24 24 24 30 30 30 26 26 26 32 32 32 Power Factor 99 2 94 9 90 9 97 4 93 2 96 2 98 5 94 2 98 5 97 0 99 4 95 2 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 295 800 215 295 800 215 Pack...

Страница 21: ...01 Printed Circuit Board Connector Wiring Diagram 10 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 11 2 Outdoor Unit 14 2 1 RK X S20 25 35J2V1B 14 2 2 RK X S42J2V1B 16 2 3 RK X S50J2V1B 18 ...

Страница 22: ...S47 Connector for signal receiver PCB 8 H1 H2 H3 FG Connector for terminal board 9 JA Address setting jumper Refer to page 243 for detail JB Fan speed setting when compressor stops for thermostat OFF JC Power failure recovery function auto restart Refer to page 246 for detail 10 LED A LED for service monitor green 11 FU1 F1U Fuse 3 15 A 250 V 12 V1 Varistor 1 S48 Connector for control PCB 1 S49 Co...

Страница 23: ...SiBE041101 Indoor Unit Printed Circuit Board Connector Wiring Diagram 12 PCB Detail PCB 1 Control PCB V1 FU1 S1 S41 S21 S47 JB JA JC S46 S25 LED A S32 FG H1 H2 H3 2P206687 1 ...

Страница 24: ...nit SiBE041101 13 Printed Circuit Board Connector Wiring Diagram PCB 2 Signal Receiver PCB PCB 3 Display PCB PCB 4 INTELLIGENT EYE Sensor PCB 3P210728 1 S48 3P210728 1 RTH1 SW1 S49 LED3 LED2 LED1 3EB86013 1 S26 ...

Страница 25: ...expansion valve coil 3 S40 Connector for overload protector 4 S50 Connector for magnetic relay 5 S70 Connector for fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 S100 Connector for forced operation button PCB 9 HL3 HN3 Connector for filter PCB 10 HR2 Connector for reactor 11 U V W Connector for compresso...

Страница 26: ...ring Diagram PCB Detail PCB 1 Filter PCB PCB 2 Main PCB PCB 3 Forced Operation Button PCB HR1 HL2 S50 on main PCB 3P254234 1 FU1 HN2 S FU3 AC2 E1 E2 AC1 S11 V3 V2 S10 J5 J4 S90 FU2 S100 S50 2P254206 1 S70 S40 S20 S80 HL3 HN3 V1 LED A U VW HR2 SW1 S110 3P255755 1 ...

Страница 27: ...l 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 U V W Connector for compressor 7 HL1 HN1 S Connector for terminal board 8 E E2 Connector for earth 9 HR1 HR2 Connector for reactor 10 LED A LED for service monitor green 11 FU1 FU2 Fuse 3 15 A 250 V 12 FU3 Fuse 30 A 250 V 13 J4 Jumper for facility setting Refer to page 245 for detail 14 J5 Jumper for impr...

Страница 28: ...Outdoor Unit SiBE041101 17 Printed Circuit Board Connector Wiring Diagram PCB Detail HN1 HL1 E S V1 FU1 LED A S80 S20 S90 S70 HR2 HR1 FU2 S40 J5 J4 U V W 2P208173 1 V3 V4 FU3 E2 ...

Страница 29: ...ector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 AC1 AC2 Connector for terminal board power supply 9 E1 E2 Connector for earth 10 HR1 HR2 Connector for reactor 11 U V W Connector for compressor 12 FU1 Fuse 30 A 250 V 13 FU2 FU3 Fuse 3 15 A 250 V 14 V2 V3 V5 V6 V11 Varistor 1 S52 S102 Connector for main PCB 2 LED A LED for ser...

Страница 30: ...d Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Main PCB PCB 2 Service Monitor PCB V3 V11 AC1 FU2 E1 E2 HR1 HR2 FU3 W 2P169046 5 S40 S20 V U S70 S90 S51 S10 AC2 S101 V5 S80 V6 V2 FU1 S102 SW1 3P169059 1 LED A SW4 B SW4 C S52 ...

Страница 31: ...10 2 Area INTELLIGENT EYE Operation 30 1 11 Inverter POWERFUL Operation 32 1 12 Other Functions 33 2 Function of Thermistor 34 3 Control Specification 35 3 1 Mode Hierarchy 35 3 2 Frequency Control 36 3 3 Controls at Mode Changing Start up 38 3 4 Discharge Pipe Temperature Control 40 3 5 Input Current Control 41 3 6 Freeze up Protection Control 42 3 7 Heating Peak cut Control 42 3 8 Outdoor Fan Co...

Страница 32: ...et by the following 2 parameters coming from the operating indoor unit The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature Additional Control Parameters The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation Inverter Principle To re...

Страница 33: ... cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency Forced Cooling Operation Refer to page 240 for detail Refrigerant circulation rate high high f low f freq variable Refrigerant circulation rate low high speed low speed R2812 Amount of heat...

Страница 34: ... Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner When the horizontal swing and vertical swing are both set to auto mode the airflow becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown in the fol...

Страница 35: ...The following drawing explains the principle of fan speed control for cooling In automatic fan speed operation upper limit is at M tap in 30 minutes from the operation start Heating On heating mode the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature Note 1 During POWERFUL operation fan r...

Страница 36: ...mperature at start up and the target temperature is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor temperature at start up Target temperature X Thermostat OFF point Y Thermostat ON point Z 24ºC or more Room thermistor temperature at start up X 2 5ºC X 0 5ºC or Y...

Страница 37: ...ction value 1 The set temperature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 2 5 C 2 Cooling Heating switching point Tr Tt 2 5 C 3 Thermostat ON OFF point...

Страница 38: ...ns to the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry Heating B A OFF ON C Room thermistor temperature target temperature 1 5 C R12319 Cooling 0 5 C Dry 0 5 C Cooling 2 ...

Страница 39: ...then automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions and also conserves electricity Cooling Heating R10870 TIMER operation NIGHT SET Mode ON Target temperature 0 5 C temperature shift Operation stops at the set ...

Страница 40: ...m the wireless remote controller by pushing the ECONO button When this function is activated the maximum capacity also decreases The remote controller can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation This function can only be set when the unit is running Pressing the ON OFF button on the remote controller cancels the function This function and POWERFUL operation canno...

Страница 41: ...the indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20 msec 10 200 msec and when the ON signal continues 3 sec it judges human is in the room as the motion signal is ON 2 area INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area Image of 2 area INTELLIGENT EYE 1 sec sampling 20 msec High Low ...

Страница 42: ...the airflow direction to area B left side 2 Detection signal ON in area A Shift the airflow direction to area B left side 3 Detection signal ON in area B Shift the airflow direction to area A right side 4 Detection signal OFF in both area A and B No change When the detection signal is OFF for 20 minutes in both area A and B the unit starts energy saving operation Others For dry operation you canno...

Страница 43: ...inutes Ex POWERFUL operation in cooling mode Operation mode Fan speed Target temperature COOL H tap 50 rpm 18 C DRY Dry rotating speed 50 rpm Lowered by 2 5 C HEAT H tap 50 rpm 31 C FAN H tap 50 rpm AUTO Same as cooling heating in POWERFUL operation The target temperature is kept unchanged R7096 Target temp Fan 50 rpm 18 C H tap Set tap 20 minutes Ending condition or in 1 to 3 1 After the lapse of...

Страница 44: ...F button for 5 to 9 seconds while the unit is not operating Refer to page 240 for detail Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 12 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter as a single highly effective filter The filter t...

Страница 45: ...lace of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is used for detecting disconnection of the discharge pipe thermistor C Indoor Heat Exchanger Thermistor 1 The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature The system sets the target discharge pipe...

Страница 46: ... include defrosting Note Unless specified otherwise an indoor dry operation command is regarded as cooling operation Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Stop mode except for cooling modes by indoor command Preheating operation During C capacitor is discharging Stop R2830 Air conditioner control mode Forced operatin...

Страница 47: ...unctions Compressor protection input current discharge pipe temperature freeze up protection 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following function Pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency For Heat Pump Model 1 Determ...

Страница 48: ...olume airflow rate and other factors PI Control Determine Frequency Up Down by D Signal 1 P control The D value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 2 I control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the D valu...

Страница 49: ...re 90 C Control B ON condition Discharge pipe temperature 20 C OFF condition Discharge pipe temperature 22 C Radiation fin temperature 90 C RK X S42J2V1B ON Condition When the discharge pipe temperature is below 10ºC the inverter operation in open phase starts OFF Condition When the discharge pipe temperature is higher than 12ºC the inverter operation in open phase stops RK X S50J2V1B Outdoor temp...

Страница 50: ... compressor for heating 2 When the operation mode changes to cooling from heating 3 When starting compressor for defrosting or resetting 4 When starting compressor for the first time after the reset with the power is ON 5 When starting compressor for heating next to the suspension of defrosting 6 When starting compressor next to the fault of switching over cooling heating Set the lower limit frequ...

Страница 51: ...ther Detail Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Drooping zone The timer starts and the frequency is drooping Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency is increased Reset zone The upper limit of frequency is canceled 20 25 35 class 42 class 50 class A ºC 110 110 110 B ºC 105 103 103 C ºC 101 102 101 5 D ºC ...

Страница 52: ...y is pulled down by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current drooping and stop value according to the outdoor temperature The current droops when outdoor temperature becomes higher than a certain level depending on the model 20 class 25 class 35 class Cooling Heating Cooling ...

Страница 53: ...the frequency upper limit to prevent abnormal high pressure Detail R4561 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Drooping zone Stop zone 0 C 5 5 C 7 5 C 9 5 C 13 C Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Drooping zone The timer starts and the frequency is drooping Keep zone The upper limit of frequency is kept Up zone...

Страница 54: ... rotation speed of the outdoor fan is reduced by the command of the indoor outdoor quiet operation 7 Fan control for POWERFUL operation The rotation speed of the outdoor fan is increased while the POWERFUL operation 8 Fan speed control for pressure difference upkeep The rotation speed of the outdoor fan is controlled for keeping the pressure difference while cooling with low outdoor temperature Wh...

Страница 55: ... minutes More than A minutes of accumulated time pass since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with outdoor heat exchanger temperature J C 20 class 25 35 class 42 class 50 class A minutes 28 28 30 44 B Hz 76 76 48 55 C Hz 86 86 70 90 D seconds 50 50 60 60 E seconds 60 60 120 120 F seconds 600 600 650 460 G seconds 50 6...

Страница 56: ...nsion valve control when the discharge pipe thermistor is disconnected Feedback Control 1 Discharge pipe temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 Control when frequency changed Control for abnormally high discharge pipe temperature Operation pattern function not function When power is turned ON...

Страница 57: ...f the discharge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 3 11 6 Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensing temperature If...

Страница 58: ... value in a certain time period the target discharge pipe temperature control is canceled and the target opening of the electronic expansion valve is changed according to the shift 3 11 8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature and the electronic expansion valve opening is adjusted so that th...

Страница 59: ...r consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is small comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking a power consumption II Detecting by discharge pipe temperature If the discharge...

Страница 60: ... Controller 51 2 2 AUTO DRY COOL HEAT FAN Operation 52 2 3 Adjusting the Airflow Direction 54 2 4 COMFORT AIRFLOW and INTELLIGENT EYE Operation 56 2 5 POWERFUL Operation 60 2 6 OUTDOOR UNIT QUIET Operation 61 2 7 ECONO Operation 62 2 8 OFF TIMER Operation 63 2 9 ON TIMER Operation 64 2 10 WEEKLY TIMER Operation 65 ...

Страница 61: ...er 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 over...

Страница 62: ...blades page 12 12 COMFORT SENSOR button 13 WEEKLY TIMER operation page 23 14 SELECT button 15 OFF TIMER button page 21 16 ON TIMER button page 22 17 TIMER CANCEL button It cancels the timer setting page 21 22 18 CLOCK button 1 5 6 2 3 4 ARC452A3 7 8 13 14 15 17 Open the front cover 10 9 11 12 16 18 It displays the current settings In this illustration each section is shown with its displays on for...

Страница 63: ...setting 4 Press or AUTO HEAT DRY FAN COOL AUTO or COOL or HEAT operation DRY or FAN operation Press to raise the temperature and press to lower the temperature The temperature setting is not variable Set to the temperature you like The air conditioner operates with the operation mode of your choice From the next time on the air conditioner will operate with the same operation mode Each pressing of...

Страница 64: ... 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 the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit A pinging sound may be hear...

Страница 65: ...rflow direction Upper Lower Right Left 3 D Right and left airflow direction To start auto swing is displayed on the LCD The louvers vertical blades will begin to swing The following illustrations show respective airflow directions and are displayed on the LCD The flaps and louvers move in turn To cancel 3 D airflow press either or again The flaps or louvers will stop moving is displayed on the LCD...

Страница 66: ...8 80 Press and when the flaps or louvers have reached the desired position Always use a remote controller to adjust the angles of the flaps and louvers If you attempt to move the flaps and louvers forcibly with hand when they are swinging the mechanism may be broken Always use a remote controller to adjust the louvers angles In side the air outlet a fan is rotating at a high speed The flaps swingi...

Страница 67: ...on and in the downward direction while in HEAT operation which will provide a comfortable wind that will not come in direct contact with people INTELLIGENT EYE is the infrared sensor which detects the human movement If no one is in the room for more than 20 minutes the operation automatically changes to energy saving operation The INTELLIGENT EYE sensor according to the following situations Use th...

Страница 68: ... will stop movement of them The INTELLIGENT EYE lamp lights up The lamp will be lit while human movements are detected INTELLIGENT EYE COMFORT AIRFLOW Press and select blank on the LCD COMFORT AIRFLOW and INTELLIGENT EYE The flaps will adjust the airflow direction upward while cooling and adjust the airflow direction downward while heating page 14 The sensors will detect the movement of people in ...

Страница 69: ...ple in the areas This may occur depending on the clothes the people are wearing if there are no movements of the people in the areas The airflow direction from the louvers will be leftward if there are people in both areas 1 and 2 or if there is a person right in front of the sensors because the sensors on the both sides will detect the person Due to the position of the sensor people might be expo...

Страница 70: ...ation during which the sensors of the INTELLIGENT EYE are working to detect the movement of people When the sensors detect people the louvers will direct the airflow in such way that it will not be blown directly on them If there are no people the air conditioner will go into energy saving operation after 20 minutes If no presence detected in the room for 20 minutes the energy saving operation wil...

Страница 71: ... not available POWERFUL operation cannot be used together with ECONO COMFORT AIRFLOW or OUTDOOR UNIT QUIET operation Priority is given to the function of whichever button is pressed last POWERFUL operation can only be set when the unit is running POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonst...

Страница 72: ... operation To cancel OUTDOOR UNIT QUIET operation This function is available in COOL HEAT and AUTO operation This is not available in FAN and DRY operation POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time Priority is given to the function of whichever button is pressed last Even the operation is stopped using the remote controller or the indoor unit ON OFF switch...

Страница 73: ...rrent and power consumption Normal operation Maximum during normal operation Maximum during ECONO operation ECONO operation From start up until set temperature is reached The maximum running current and power consumption of the air conditioner in ECONO operation vary with the connecting outdoor unit ECONO operation can only be set when the unit is running ECONO operation is a function which enable...

Страница 74: ...correct If not set the clock to the present time Press until the time setting reaches the point you like Each pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly To cancel the OFF TIMER Operation When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The ...

Страница 75: ...N TIMER and OFF TIMER A sample setting for combining the 2 timers is shown below NOTE In the following cases set the timer again Example Present time 23 00 The unit operating OFF TIMER at 0 00 ON TIMER at 14 00 Combined Display Check that the clock is correct If not set the clock to the present time Press until the time setting reaches the point you like Each pressing of either button increases or...

Страница 76: ...ed for each day of the week It is convenient if the WEEKLY TIMER is set according to the family s life style Tuesday to Friday Use the copy mode to make settings for Tuesday to Friday because these settings are the same as those for Monday see page 27 Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER The effective use of the copy mode ensures ease of making r...

Страница 77: ... 00 25 C 27 C Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF Monday blank ON TIMER OFF TIMER Make sure the day of the week and time are set If not set the day of the week and time The day of the week and the reservation number of the current day will be displayed 1 to 4 settings can be made per day Press to select the desired day of the week and reservation number Pressing the changes the r...

Страница 78: ...ooling The unit operates at 18 C even if it is set at 10 to 17 C Heating The unit operates at 30 C even if it is set at 31 to 32 C The set temperature is only displayed when the mode setting is on The temperature will be set and go to the next reservation setting To continue further settings repeat the procedure from step 4 Be sure to direct the remote controller toward the indoor unit and check f...

Страница 79: ...e time The ON OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active The WEEKLY TIMER will go into standby state and will disappear from the LCD When ON OFF TIMER is up the WEEKLY TIMER will automatically become active Only the time and set temperature with the weekly timer are sent with the Set the weekly timer only after setting the operation mode the fan strength and t...

Страница 80: ...gram 4 ON OFF ON OFF Monday Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF COPY A reservation made once can be copied another day of the week The whole reservation of the selected day of the week will be copied Tuesday to Friday Press to confirm the day of the week to be copied The whole reservation of the selected day of the week will be copied Press to select the destination day of the we...

Страница 81: ... of the selected day of the week will be copied To continue copying the settings to other days of the week repeat step 4 and step 5 is displayed on the LCD and WEEKLY TIMER operation is activated The entire reservation of the source day of the week is copied in the copy mode In the case of making a reservation change for any day of the week individually after copying the content of weekly reservat...

Страница 82: ...ation press the again Setting Displays Normal Confirmation The day of the week and the reservation number of current day will be displayed Press to select the day of the week and the reservation number to be confirmed To change the confirmed reserved settings select the reservation number and press The mode is switched to setting mode Go to setting mode step 4 page 24 is displayed on the LCD and W...

Страница 83: ... reservation will be deleted This function can be used for deleting reservations for each day of the week It can be used while confirming or setting reservations Select the day of the week to be canceled with The reservation of the selected day of the week will be deleted Hold for 5 seconds while normal display Be sure to direct the remote control toward the main unit and check for a receiving ton...

Страница 84: ...bnormality 96 4 14 Discharge Pipe Temperature Control 98 4 15 High Pressure Control in Cooling 100 4 16 Compressor System Sensor Abnormality 101 4 17 Position Sensor Abnormality 103 4 18 DC Voltage Current Sensor Abnormality 20 25 35 42 Class 106 4 19 CT or Related Abnormality 50 Class 107 4 20 Thermistor or Related Abnormality Outdoor Unit 109 4 21 Electrical Box Temperature Rise 111 4 22 Radiati...

Страница 85: ...41101 Service Diagnosis 74 5 10 Capacitor Voltage Check 128 5 11 Power Module Check 128 5 12 Inverter Checker Check 129 5 13 Rotation Pulse Check on the Outdoor Unit PCB 131 5 14 Main Circuit Short Check 132 ...

Страница 86: ...e thermistor malfunctions 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 Service Monitor The indoor unit has one green LED LED A on the control PCB When the microcomputer works in order the LED A blinks 1 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the microc...

Страница 87: ...ck the outdoor temperature Heating operation cannot be used when the outdoor temperature is 20 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 C Diagnose with remote controller indication 80 The unit operates but does not cool or does not heat Check for wiring and piping errors in the connection between the indoor unit and outdoor unit Check for thermistor...

Страница 88: ...nce shown below Note 1 A short beep pi and two consecutive beeps pi pi indicate non corresponding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode No Code No Code No Code 1 00 13 C7 25 UA 2 U4 14 A3 26 UH 3 L5 15 H8 27 P4 4 E6 16 H9 28 L3 5 H6 17 C9 29 L4 6 H0 18 C4 30...

Страница 89: ...beep or pi pi 3 Diagnose by the sound pi The figure of the ten s place does not accord with the error code pi pi The figure of the ten s place accords with the error code but the one s not beep The both figures of the ten s and one s place accord with the error code The figures indicated when you hear the beep sound are error code Refer to page 80 4 Press the MODE button The figure of the one s pl...

Страница 90: ...both figures of the ten s and one s place accord with the error code 7 Determine the error code The figures indicated when you hear the beep sound are error code Error codes and description Refer to page 80 8 Press the MODE button to exit from the diagnosis mode The display means the trial operation mode Refer to page 242 for trial operation 9 Press the ON OFF button twice to return to the normal ...

Страница 91: ...ity 86 Outdoor Unit E1 Outdoor unit PCB abnormality 89 E5 OL activation compressor overload 92 E6 Compressor lock 93 E7 DC fan lock 94 E8 Input overcurrent detection 95 EA Four way valve abnormality 96 F3 Discharge pipe temperature control 98 F6 High pressure control in cooling 100 H0 Compressor system sensor abnormality 101 H6 Position sensor abnormality 103 H8 DC voltage current sensor abnormali...

Страница 92: ...ion of connector Troubleshooting Note Check the following connector Check the combination of the indoor and outdoor unit OK Check the connection of connectors See Note Correct the connection OK Error repeats YES NO NO YES NO YES R11704 Caution To secure the connection once disconnect the connector and then reconnect it Match the compatible models Replace the indoor unit PCB 1 Replace the indoor un...

Страница 93: ...ing heating operation the temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc Malfunction Decision Conditions Freeze up protection control During cooling operation the indoor heat exchanger temperature is below 0 C Heating peak cut control During heating operation the indoor heat exchanger temperature is above 65...

Страница 94: ...an the air filter Clean the indoor heat exchanger Replace the indoor unit PCB Replace the thermistor Does it conform to the thermistor characteristic chart Check the air filter Check the dust accumulation on the indoor heat exchanger Is there any short circuit Is it very dirty Is it very dirty Check the air passage Be sure to turn off the power switch before connecting or disconnecting connectors ...

Страница 95: ... is used to determine abnormal fan motor operation Malfunction Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supposed Causes Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor...

Страница 96: ... fan rotate smoothly Does the fan rotate Is the motor power supply voltage 310 340 VDC generated Is the motor control voltage 15 VDC generated Turn off the power supply and rotate the fan by hand Turn the power on and start operation Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 01 Check the output of the fan motor connector R12...

Страница 97: ...mpressor operation Supposed Causes Disconnection of connector Defective thermistor Defective indoor unit PCB Troubleshooting Check No 06 Refer to P 125 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor YES R7134 NO Check No 06 Check the thermistor resistance value YES NO Caution Correct the connection Replace the thermistor Replace the indoor unit PCB Is it normal Is it normal Che...

Страница 98: ...pply waveform Check the voltage of the connection wires on the indoor terminal board between No 1 and No 3 and between No 2 and No 3 YES YES Replace the indoor unit PCB Locate the cause of the disturbance of the power supply waveform and correct it NO R12160 NO YES YES NO NO Caution Correct the indoor unit outdoor unit connection wires Diagnose the outdoor unit PCB Before you check the LED A cance...

Страница 99: ...iring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R11707 Caution NO YES YES YES NO NO Check the code numbers 2P01234 for example of the indoor and outdoor unit PCB with the Parts List Match the compatible models Change for the correct PCB Replace the indoor unit PCB or the outdoor unit PCB OK Matched com...

Страница 100: ...rness between PCBs Noise Momentary fall of voltage Momentary power failure etc Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO YES YES R14186 YES NO NO Replace the outdoor unit PCB Ground the system Zero cross signal abnormality Replace the outdoor unit PCB Replace the harness Check to see if the outdoor unit is ...

Страница 101: ... or disconnecting connectors or parts may be damaged NO YES YES YES NO R12188 YES NO Replace the outdoor unit PCB Ground the system Zero cross signal abnormality Replace the outdoor unit PCB Replace the harness Check to see if the outdoor unit is grounded Is LED A blinking Grounded NO Replace the connecting wires between the indoor and outdoor units Check the voltage between No 1 and No 2 on the o...

Страница 102: ...power switch before connecting or disconnecting connectors or parts may be damaged YES NO NO YES Turn on the power again Check to see if the unit is grounded Replace the outdoor unit PCB Ground the system The cause can be external factors other than malfunction Investigate the cause of noise Error again Grounded ...

Страница 103: ...tive stop valve Troubleshooting Check No 04 Refer to P 123 Check No 05 Refer to P 124 Check No 06 Refer to P 125 Check No 11 Refer to P 127 R11999 Caution YES NG Discharge pipe thermistor NO OK OK NG Refrigerant shortage Water mixed Stop valve NG OK NG OK Insert the thermistor in position Replace the discharge pipe thermistor Replace the electronic expansion valve or the coil Refer to the refriger...

Страница 104: ...es without any other error Supposed Causes Compressor locked Compressor harness disconnected Troubleshooting Check No 14 Refer to P 129 Turn off the power Disconnect the harnesses U V and W R14170 Caution NO YES YES NO NO YES Check No 14 Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the pow...

Страница 105: ...her error Supposed Causes Disconnection of the fan motor Foreign matters stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 15 Refer to P 131 R11708 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate the fan Check No 15 Check the rotation pulse input on the outdoor unit PCB Turn off the power and reconnect the connector Remove them Replace the outdoo...

Страница 106: ...switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the wires have been disconnected and reconnected for part replacement for example and the system is interrupted by an input overcurrent take the following procedure R14171 NO YES YES NO Start operation and measure the input current Check No 08 Check the dischar...

Страница 107: ...ditions A following condition continues over 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry room thermistor temp indoor heat exchanger temp 5 C Heating indoor heat exchanger temp room thermistor temp 5 C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Di...

Страница 108: ...way valve defective or dust clogged Reconnect in position Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R11710 Four way valve coil disconnected loose Harness out of connector Any thermistor disconnected Check No 06 Check the thermistors Check No 11 Check the refrigerant line Check No 05 Check the four way valve switching output C...

Страница 109: ...s the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective discharge pipe thermistor Defective outdoor heat exchanger thermistor or outdoor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB St...

Страница 110: ...rigerant shortage Four way valve Water mixed Stop valve OK OK OK NG NG Check No 06 Check the thermistors Check No 11 Check the refrigerant line Check No 04 Check the electronic expansion valve Replace the defective thermistor Replace the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB Be sure to turn off the power switch before conn...

Страница 111: ... thermistor Defective outdoor unit PCB Troubleshooting Check No 04 Refer to P 123 Check No 06 Refer to P 125 Check No 07 Refer to P 126 Check No 08 Refer to P 126 Check No 09 Refer to P 127 R11897 Caution Replace the fan motor Reconnect the connector or fan motor lead wires Replace the stop valve Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB Replace the electronic expa...

Страница 112: ...sor output converted to voltage value The DC voltage before compressor start up is below 50 V Supposed Causes Broken or disconnection of harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO R11712 YES Turn off the power and turn it on again YES NO Replace the harness No problem Keep ...

Страница 113: ...O YES Connect it properly NO YES Replace the reactor NO YES Replace the compressor or the compressor relay harness Restart the operation again and if the error occurs again replace the outdoor unit PCB NO YES Disconnect the reactor from the outdoor unit PCB and measure the resistance value between reactor terminals with tester Disconnect the compressor relay harness from the outdoor unit PCB and m...

Страница 114: ...ng condition through the position detection circuit Malfunction Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supposed Causes Disconnection of the compressor relay cable Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is ou...

Страница 115: ...ated R14172 NO NO NO YES YES NO YES YES Check No 29 Check the short circuit of the diode bridge Check No 14 Check with the inverter checker Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB Replace the compressor Correct the power supply o...

Страница 116: ...wer Correct the power supply Voltage as rated R14173 NO NO YES NO YES YES Check No 14 Check with the inverter checker Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB Replace the compressor Correct the power supply or replace the outdoor ...

Страница 117: ...r running frequency and the input current Malfunction Decision Conditions The compressor running frequency is above 52 Hz If the error repeats 4 times the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor unit PCB Troubleshooting Replace the outdoor unit PCB Caution Be sure to turn off the power switch before connectin...

Страница 118: ...ing frequency and CT detected input current Malfunction Decision Conditions The compressor running frequency is more than 55 Hz and the CT input current is below 0 5 A If the error repeats 4 times the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective power module Breakage of wiring or disconnection Defective reactor Defective ...

Страница 119: ... on the power again and restart operation Current guideline Compressor running 320 50 VDC Any LED OFF Running current as shown at right with relay cable 1 or 2 Voltage within the allowable range Supply voltage 15 Replace the outdoor unit PCB Replace the outdoor unit PCB Replace the outdoor unit PCB Check the supply voltage Replace the compressor Capacitor charged when the indoor unit or outdoor un...

Страница 120: ...V 42 class 0 02 V with the power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Defective thermistor Defective heat exchanger thermistor in the case of J3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation Defecti...

Страница 121: ...following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Replace the indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check No 06 ...

Страница 122: ...h the compressor off the radiation fin temperature is above A C The error is cleared when the radiation fin temperature drops below B C To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector De...

Страница 123: ...r and turn it on again Check the radiation fin temperature Check No 07 Check the installation condition Radiation fin dirty Above A C Check No 09 Check the outdoor fan or related Error again or outdoor fan activated Replace the outdoor unit PCB Clean up the radiation fin Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the fan motor...

Страница 124: ...he compressor on is above A C The error is cleared when the radiation fin temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied ...

Страница 125: ...ion fin dirty Check No 09 Check the outdoor fan or related Error displayed again Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not apply it See Note Check the power transistor and the radiation fin for looseness If they are found to be fit tightly replace the outdoor unit PCB or the power transistor Clean up the radiation fin Silicon grease Part No 1172...

Страница 126: ...hile the compressor is running A speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supposed Causes Poor installation condition Closed stop valve Defective p...

Страница 127: ...ule Check No 07 Check the installation condition Check No 14 Check with the inverter checker Turn off the power and disconnect the harnesses U V and W Turn off the power and reconnect the harnesses Turn on the power again and start operation Turn off the power and turn it on again to start the system See if the same error occurs Check the supply voltage Keep on using as it is Check the connectors ...

Страница 128: ...erant shortage detection III Refrigerant shortage is detected by checking the difference between suction and discharge temperature Malfunction Decision Conditions Refrigerant shortage detection I The following conditions continue for 7 minutes 20 25 35 42 class Input current input voltage A output frequency B Output frequency C 50 class Input current D output frequency E Output frequency F Refrige...

Страница 129: ...uses Disconnection of the discharge pipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature thermistor Closed stop valve Refrigerant shortage refrigerant leakage Poor compression performance of compressor Defective electronic expansion valve K C Cooling room thermistor temperature indoor heat exchanger temperature 4 0 outdoor heat exchanger temperature outdoor tempe...

Страница 130: ... pipe flare or replace the union Check the power transistor harness for looseness Correct it as required Also replace the cracked pipe Check the pipes for improper contact Correct them as required Also replace the cracked pipe Replace the electronic expansion valve Replace the defective one s Completed Refrigerant shortage error again Oil oozing at internal piping Stop valve closed Compressor vibr...

Страница 131: ...oltage detection The voltage detected by the DC voltage detection circuit is below 150 180 V depending on the model Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer The voltage is over 400 V If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supp...

Страница 132: ...before connecting or disconnecting connectors or parts may be damaged NO YES YES NO YES Precaution before turning on the power again NO Replace the fan motor or the outdoor unit PCB Check the supply voltage Rotate the fan by hand Disturbance factors Noise Power supply distortion Repeat a few times Make sure the power has been off for at least 30 seconds Turn on the power again System restarted Doe...

Страница 133: ...hen the data sent from the PM1 can not be received for 9 seconds The error counter is reset when the data from the PM1 can be successfully received Supposed Causes Defective outdoor unit PCB Troubleshooting R7185 Caution NO YES Turn off the power and turn it on again Error again Replace the outdoor unit PCB The cause can be an external factor other than the malfunction Observe the operating condit...

Страница 134: ...r off and on again and check to see if the EV generate latching sound 3 If the EV does not generate latching sound in the above step 2 disconnect the connector and check the continuity using a tester 4 Check the continuity between the pins 1 6 2 6 3 6 and 4 6 If there is no continuity between the pins the EV coil is faulty 5 If the continuity is confirmed in the above step 3 the outdoor unit PCB i...

Страница 135: ...oil from the connector and check the continuity Start heating operation Four way valve coil Cooling Dry No continuity Heating Continuity Replace the outdoor unit PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 Ω S80 voltage at 220 240 VAC with compressor on Fig 1 R11904 Fig 1 Voltage at S80 220 240 VAC Time Compressor ON ...

Страница 136: ...re and resistance is shown in the table and the graph below For the models in which the thermistor is directly mounted on the PCB disconnect the connector for the PCB and measure Thermistor temperature C Resistance kΩ 20 211 0 15 150 0 10 116 5 5 88 0 0 67 2 5 51 9 10 40 0 15 31 8 20 25 0 25 20 0 30 16 0 35 13 0 40 10 6 45 8 7 50 7 2 R25 C 20 kΩ B 3950 K Tester Resistance range R11906 kΩ 150 100 5...

Страница 137: ...utdoor heat exchanger very dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temperature The outdoor temperature should be 46 C or lower R11718 Not dirty YES YES Dirty NO NO NO YES Is the air filter or indoor outdoor heat exchanger dirty Is the connection...

Страница 138: ...m disturbance near the zero cross sections circled in Fig 2 5 9 Inverter Units Refrigerant System Check Check No 11 R7159 YES YES NO NO Outdoor fan system is functioning Check the outdoor fan system Go to Check No 15 Outdoor fan running Fan motor lead wire connector disconnected Reconnect the connector Fig 1 Fig 2 Refrigerant system check Check for refrigerant leakage See the service diagnosis on ...

Страница 139: ...is approx 0 V before checking Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi tester Evaluate the measurement results for a judgment Multimeter DC voltage range R13538 Negative termi...

Страница 140: ...in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect ...

Страница 141: ... lit uniformly the compressor is defective Replace the compressor 2 When the LEDs are not lit uniformly check the power module Refer to Check No 13 3 If NG in Check No 13 replace the power module PCB If OK in Check No 13 check if there is any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB Ca...

Страница 142: ...C 4 Check that the rotation command voltage between the pins 2 4 is 0 15 VDC 5 Keep operation off and power off Connect the connector S70 6 Check whether 2 pulses 0 15 VDC are output at the pins 1 4 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB If NG in step 4 Defective...

Страница 143: ...ce between the pins of the DB1 as below If the resistance is or less than 1 kΩ short circuit occurs on the main circuit 20 25 35 class 42 class terminal of the tester in case of digital terminal 2 3 4 2 3 1 terminal of the tester in case of digital terminal 4 2 3 1 2 3 Resistance in OK several kΩ several MΩ several kΩ several MΩ Resistance in NG 0 Ω or 0 0 0 Ω or R12035 Tester 1 2 3 4 R12266 Teste...

Страница 144: ...ition Plate 182 2 5 Removal of Sound Blankets 184 2 6 Removal of Four Way Valve 186 2 7 Removal of Compressor 189 3 Outdoor Unit RK X S42J2V1B 191 3 1 Removal of Outer Panels 191 3 2 Removal of Electrical Box 193 3 3 Removal of PCB 198 3 4 Removal of Sound Blankets 203 3 5 Removal of Outdoor Fan Fan Motor 205 3 6 Removal of Thermistors 208 3 7 Removal of Four Way Valve Electronic Expansion Valve 2...

Страница 145: ...t pressed for 5 seconds the forced cooling operation is performed for about 15 minutes 2 Remove the air filters 1 Hold the both sides of the front panel and open the panel to the position where it stops 2 Slightly push up the center knob of the air filter and release the hooks The air filter is not marked for difference between the right and left sides The air filter can be set easily by inserting...

Страница 146: ...rifying filter is not marked for difference between the right and left sides 2 Remove the Titanium apatite photocatalytic air purifying filter ASSY by bending the air filter and unfastening the projections from the air filter frame 3 Remove the Titanium apatite photocatalytic air purifying filter from its frame at 5 positions by bending it Step Procedure Points R7904 Air filter Titanium apatite ph...

Страница 147: ...er supplies before disassembling work Step Procedure Points 1 Hold the both sides of the front panel and open the panel over the position where it stops 2 Slide the left rotary shaft to the right and release it 3 Slide the right rotary shaft to the left and release it 4 Remove the front panel R7906 Front panel R7907 Rotary shaft R7909 Rotary shaft R7910 ...

Страница 148: ... front panel make sure that the shaft is fitted in the guide before closing the panel Caution on Mounting When mounting the front panel fit the right and left rotary shafts one by one into the grooves and fully push them in position Step Procedure Points R7908 Shaft ...

Страница 149: ...er supplies before disassembling work Step Procedure Points 1 Remove the service cover 1 Remove the screw of the service cover Preparation Remove the front panel according to the Removal of Front Panel 2 Pull out the service cover diagonally down in the direction of the arrow 3 The figure shows the appearance of the inside R7911 Service cover R8077 R7913 ...

Страница 150: ...ure 2 Remove the front grille 1 Remove the 2 screws one each at the right and left 2 The front grille has 3 hooks at the top 3 Unfasten the left hook 4 Unfasten the center hook Step Procedure Points R12267 R8076 Hooks R7917 Front grille R7918 ...

Страница 151: ...he right hook 6 Pull the upper part of the front grille out and lift the lower part up and then remove the front grille Caution on Mounting When mounting the front grille make sure that the 3 hooks are fastened as they were Step Procedure Points R8078 R12268 ...

Страница 152: ...to the upper side and the small horizontal blade to the lower side Do not put them in the wrong place 2 Unfasten the center shaft while bending the horizontal blade large slightly 3 Unfasten the left shaft 4 Unfasten the key alignment shaft at the right side Caution on Mounting There is a key alignment at the right shaft When mounting insert the right shaft first while turning After inserting the ...

Страница 153: ...g the horizontal blade small slightly 2 Unfasten the left shaft 3 Unfasten the key alignment shaft at the right side 3 Remove the fan guards 1 Unfasten the hooks at the lower part of the fan guard with a flat screwdriver 2 Remove the fan guard Step Procedure Points R7925 Horizontal blade small R7926 R7927 Key R7928 R8079 ...

Страница 154: ...ock rod 3 Unfasten the hooks at the upper 3 positions by pressing them with a flat screwdriver 4 Remove the vertical blade ASSY A vertical blade ASSY has 5 fins It is impossible to replace only one fin The vertical blade ASSY is not marked for difference between right and left Step Procedure Points R12270 Vertical blade ASSY Pivot Interlock shaft R10302 Interlock rod R10303 R12269 Hook ...

Страница 155: ...tep Procedure Points 1 The figure shows the connections of wire harnesses Preparation Remove the front grille according to the Removal of Front Grille 2 Remove the screw of the wire fixture 3 Remove the screws on the terminal board to disconnect the connecting wires 4 Disconnect the connector for fan motor S1 R7931 Electrical box R7932 Wire fixture R7933 Terminal board Connecting wires R7934 S1 ...

Страница 156: ...elease the harness for swing motors from the hook 7 Pull out the indoor heat exchanger thermistor Be careful not to lose the clip of the thermistor 8 Remove the screw and detach the earth wire Step Procedure Points R7935 S41 R7936 R7937 Indoor heat exchanger thermistor Clip R11268 R7938 Earth wire ...

Страница 157: ...at the upper far side by pressing it from above and pulling the electrical box toward yourself 11 Lift up the electrical box and pull it out There is a hook also at the lower part of the back When mounting the electrical box make sure that it is securely fastened Step Procedure Points R3939 R8081 Hook R8082 ...

Страница 158: ...ration Remove the electrical box according to the Removal of Electrical Box 2 Unfasten the hooks at the upper 2 positions of the shield plate 3 Unfasten the hook at the side of the shield plate 4 Lift up the shield plate to unfasten the lower hooks and remove it 2 Remove the terminal board 1 Remove the screw to remove the terminal board R8083 Signal receiver PCB Control PCB Shield plate INTELLIGEN...

Страница 159: ... the signal receiver unit 1 Unfasten the 3 hooks 2 Unfasten the book on the opposite side and lift up the signal receiver unit 3 Remove the signal receiver unit Step Procedure Points R12277 Signal receiver unit R8262 R12278 Hook R8088 Signal receiver unit ...

Страница 160: ...T EYE sensor PCB 2 Disconnect the connector S26 from the INTELLIGENT EYE sensor PCB 5 Remove the signal receiver PCB 1 Unfasten the 3 hooks and remove the signal receiver PCB 2 Disconnect the connector S48 from the signal receiver PCB Step Procedure Points R8092 INTELLIGENT EYE sensor PCB R8093 S26 R8090 Signal receiver PCB R8091 S48 ...

Страница 161: ...re shows the connection of wire harness for the display PCB 2 Unfasten the 4 hooks and remove the display PCB 3 Disconnect the connector S49 from the display PCB 7 Remove the control PCB 1 Unfasten the lower 2 hooks of the control PCB Step Procedure Points R8094 Display PCB R10318 Hook R8096 LED 3 Green LED 1 Green S49 LED 2 Yellow R8097 Hook Control PCB ...

Страница 162: ...gures show the names of the PCB component parts S1 DC fan motor S21 HA connector S25 INTELLIGENT EYE sensor PCB S26 control PCB S32 indoor heat exchanger thermistor S41 swing motors S46 display PCB S47 signal receiver PCB S48 S49 control PCB Refer to page 12 13 for detail Step Procedure Points R8098 R8099 S32 S1 S21 S47 S25 S46 S41 R8100 S48 S49 S26 LED2 Yellow LED3 Green LED1 Green ...

Страница 163: ...alve open air may be sucked in to generate an over pressure in refrigeration cycle thus resulting in pipe rupture or accidental injury 3 Lift up the indoor unit slightly and pull out the drain hose The illustration is for the case of left piping Place a plastic sheet under the drain pan to prevent from wetting the floor with remaining drain If the drain hose is embedded in the wall disconnect the ...

Страница 164: ...ut the pipe 2 Widen the auxiliary pipe by about 10 20 degrees Caution When dismounting or mounting the indoor heat exchanger be sure to wear gloves or wrap it with cloth before proceeding You may be injured by the fins 3 Remove the 2 screws on the left side 4 Unfasten the upper hook on the right side with a flat screwdriver Step Procedure Points R10622 Piping fixture R10543 Unbending angle 10 20 d...

Страница 165: ...ening the lower hook lift up the indoor heat exchanger by its right side When mounting the indoor heat exchanger make sure that the right hooks are fastened 6 Remove the indoor heat exchanger Step Procedure Points R14192 Lower hook Indoor heat exchanger R14193 ...

Страница 166: ...upplies before disassembling work Step Procedure Points 1 Remove the swing motor for vertical blade 1 Lift the indoor unit with a wooden base 2 Remove the screw behind the drain hose and disconnect the drain hose 3 Remove the screw at the rear and remove the screws on the right and the left side of the swing motors R10323 R10329 Drain hose R10330 Swing motors ...

Страница 167: ...crewdriver 5 Remove the swing motor unit 6 Detach the interlock shaft from the swing motor with a flat screwdriver 7 Remove the vertical blade interlock with a flat screwdriver Step Procedure Points R12270 Vertical blade ASSY Pivot Interlock shaft R8126 Swing motor unit R8127 Interlock shaft R10331 Vertical blade interlock ...

Страница 168: ...ndoor Unit SiBE041101 157 Removal Procedure 8 Remove the 2 screws 9 Remove the swing motor for vertical blade 10 Disconnect the connector Connector green Step Procedure Points R10332 Screws R10333 R10334 ...

Страница 169: ...osite the horizontal blades do not move smoothly or the noise may be heard 1 Set the motor for the upper blade first connector white 2 Then set the motor for the lower blade connector red 3 Fix the both motors with a screw 1 Remove the screw and remove the swing motors for horizontal blades 2 Disconnect the harnesses from the motors Step Procedure Points R8131 Connector for lower blade red Connect...

Страница 170: ... off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel Preparation Remove the indoor heat exchanger according to the Removal of Indoor Heat Exchanger 1 Remove the 2 screws and remove the right side panel 2 Release the fan motor wire harness from the hook R8112 R8113 Right side panel R8114 R8115 ...

Страница 171: ...screws of the fan motor fixing plate 4 Unfasten the hook of the fan motor fixing plate and remove the plate 2 Remove the fan rotor 1 Dislocate the fan rotor by sliding it to the right Step Procedure Points R8116 Fan motor fixing plate R8117 R8118 R8119 Fan rotor ...

Страница 172: ...h approx 5 mm left 2 Tighten the screw until it stops Then turn the screw in one scroll 3 Move the fan rotor and confirm the fan motor and the fan rotor are installed appropriately 4 Tighten the screw completely if appropriate 5 If not appropriate go back to 1 3 Press the bearing ASSY from outside 4 Remove the bearing Step Procedure Points R8120 Lock screw Fan motor R2808 Side face of rotor Side f...

Страница 173: ...er turning off all power supplies before disassembling work Step Procedure Points 1 Appearance features Take care not to cut your finger by the fins of the outdoor heat exchanger 2 Remove the panels The stop valve cover is united with the shield plate When reassembling make sure to fit the 5 hooks 1 Remove the screw of the stop valve cover Pull down the stop valve cover and remove it DAIKIN INVERT...

Страница 174: ...crews and lift the top panel 3 Remove the drip proof plate 4 Remove the 4 screws and remove the discharge grille The discharge grille has 4 hooks Step Procedure Points DAIKIN INVERTER Top panel R7190 DAIKIN INVERTER R7191 Drip proof plate DAIKIN INVERTER R7192 Discharge grille R7193 ...

Страница 175: ... S20 25 35J2V1B Removal Procedure 164 5 Remove the 8 screws of the front panel 6 Unfasten the hooks Pull and remove the front panel The front panel has 4 hooks Step Procedure Points DAIKIN INVERTER R11825 Front panel R11826 Hooks ...

Страница 176: ...ut size M6 1 Remove the washer fitted nut of the outdoor fan 2 Remove the outdoor fan When reassembling align mark of the outdoor fan with D cut section of the motor shaft 3 Release the outdoor temperature thermistor Step Procedure Points R14205 Outdoor fan 10 mm R12236 R11828 D cut R11829 Outdoor temperature thermistor ...

Страница 177: ...t RK X S20 25 35J2V1B Removal Procedure 166 4 Cut the clamp 5 Disconnect the connector for the fan motor S70 6 Release the fan motor lead wire from the hook Step Procedure Points R11830 R11831 S70 R11832 Fan motor lead wire ...

Страница 178: ...5 35J2V1B SiBE041101 167 Removal Procedure 7 Remove the screw and remove the fan motor fixing frame When reassembling fit the lower hooks into the bottom frame Step Procedure Points R11833 Fan motor fixing frame R12314 R7206 ...

Страница 179: ...hen reassembling put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan 9 Remove the 4 screws and remove the fan motor 4 Remove the right side panel 1 Remove the 2 screws on the rear side Step Procedure Points R11835 R3249 Lead wire Outdoor fan R12311 Fan motor R12162 ...

Страница 180: ...69 Removal Procedure 2 Remove the 4 screws on the right side panel 3 Remove the screw near the stop valves 4 Unfasten the hook on the rear side When reassembling make sure to fit the hook Step Procedure Points R12163 Right side panel R11839 R11842 ...

Страница 181: ...it RK X S20 25 35J2V1B Removal Procedure 170 5 Lift up the right side panel and remove it When reassembling make sure to fit the hook 6 Lift up the guard net and remove it Step Procedure Points R12272 Hook R11841 Guard net ...

Страница 182: ...er supplies before disassembling work Step Procedure Points 1 Disconnect the connector for the overload protector S40 Preparation Remove the panels and disconnect the connector for the fan motor according to the Removal of Outer Panels Fan Motor 2 Disconnect the connector for the four way valve coil S80 3 Disconnect the 2 connectors for the reactor R11846 S40 R11848 S80 R11844 ...

Страница 183: ... for the compressor 5 Disconnect the connector for the electronic expansion valve coil S20 6 Cut the clamp 7 Pull out the outdoor heat exchanger thermistor Be careful not to lose the clip for the thermistor Step Procedure Points R11845 R11847 S20 R11850 R11851 Outdoor heat exchanger thermistor Clip ...

Страница 184: ...101 173 Removal Procedure 8 Release the discharge pipe thermistor Be careful not to lose the clip for the thermistor 9 Lift and remove the electrical box Step Procedure Points Discharge pipe thermistor R11849 R12279 Clip R11852 Electrical Box ...

Страница 185: ...f all power supplies before disassembling work Step Procedure Points 1 Remove the main PCB You can remove the main PCB when you disconnect the lead wires on the terminal board without removing the electrical box 1 Feature of the main PCB 2 Remove the screw on the terminal board 3 Release the 2 earth terminals R11853 R11854 Terminal board R11855 Earth terminal ...

Страница 186: ...peration button PCB Disconnect the connector S110 to remove the forced operation button PCB Be careful of a sharp protrusion at the back of the forced operation button PCB 5 Disconnect the relay connector 6 Cut the clamp Step Procedure Points Forced operation button PCB R11856 R11857 R11858 ...

Страница 187: ...1 Outdoor Unit RK X S20 25 35J2V1B Removal Procedure 176 7 Release the harness 8 Cut the clamps at the 2 locations 9 Disconnect the connector for the filter PCB S10 Step Procedure Points R11859 R11860 R11861 S10 ...

Страница 188: ... for the magnetic relay S50 and for the forced operation button PCB S100 11 Disconnect the connector for the filter PCB HL3 HN3 12 Release the harnesses from the hook 13 Release the harness for the outdoor temperature thermistor Step Procedure Points R11862 S100 S50 HL3 HN3 R11863 R11864 R11865 ...

Страница 189: ...remove the main PCB Refer to page 15 for detail S10 HL3 HN3 filter PCB S20 electronic expansion valve coil S40 overload protector S50 magnetic relay S70 fan motor S80 four way valve coil S90 thermistors S100 forced operation button PCB Step Procedure Points R11866 R11867 R11868 S50 S100 S90 S10 HN3 HL3 S80 S20 S40 S70 ...

Страница 190: ... S20 25 35J2V1B SiBE041101 179 Removal Procedure 2 Remove the filter PCB 1 Release the harnesses from the hook 2 Cut the clamp 3 Release the harnesses from the hook Step Procedure Points R11869 Filter PCB R11871 R11872 ...

Страница 191: ...nit RK X S20 25 35J2V1B Removal Procedure 180 4 Release the harnesses from the hooks 5 Remove the screw 6 Unfasten the 2 hooks 7 Lift and pull out the filter PCB Step Procedure Points R11873 R11874 R11876 Filter PCB R11877 ...

Страница 192: ...Outdoor Unit RK X S20 25 35J2V1B SiBE041101 181 Removal Procedure 8 Feature of the filter PCB Refer to page 15 for detail Step Procedure Points R11878 ...

Страница 193: ...all power supplies before disassembling work Step Procedure Points 1 Remove the reactor Preparation Remove the outer panels according to the Removal of Outer Panels Fan Motor Remove the electrical box according to the Removal of Electrical Box 1 Remove the screw and remove the reactor 2 Remove the partition plate 1 Remove the 2 screws R11879 Reactor R11880 R12273 Partition plate ...

Страница 194: ...J2V1B SiBE041101 183 Removal Procedure 2 The partition plate has a hook on the lower side Lift and pull the partition plate to remove When reassembling fit the lower hook into the bottom frame Step Procedure Points R12280 R11883 ...

Страница 195: ... more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the sound blanket top Since the piping ports are torn easily remove the sound blanket carefully 2 Untie the string and open the sound blanket outer 3 Lift and remove the sound blanket outer R11884 Sound blanket top R11885 Sound blanket outer R11886 ...

Страница 196: ...r Unit RK X S20 25 35J2V1B SiBE041101 185 Removal Procedure 4 Pull the sound blanket inner out 5 Pull the sound blanket bottom out Step Procedure Points R11887 Sound blanket inner Sound blanket bottom R11888 ...

Страница 197: ...wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Pull out the electronic expansion valve coil 2 Remove the terminal cover 3 Disconnect the lead wires of the compressor R7233 Electronic expansion valve coil R7234 Terminal cover V W U R7235 Red U Yellow V Blue W ...

Страница 198: ...oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 C...

Страница 199: ... cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Step Procedure Points R7250 ...

Страница 200: ... environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Cautions for restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with w...

Страница 201: ...eans because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals the name plate the heat exchanger fin 4 Lift the compressor up and remove it R12032 Suction side ...

Страница 202: ...rocedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Appearance features 2 Remove the panels 1 Remove the 2 screws to remove the top panel and 8 screws to remove the front panel The front panel has 4 hooks DAIKIN INVERTER R7186 R12281 R9363 Top panel Hooks Hooks Discharge grille Front panel ...

Страница 203: ...ve the discharge grille When reassembling make sure to fit the 4 hooks 3 Remove the screw and remove the stop valve cover The stop valve cover is united with the shield plate When reassembling make sure to fit the 5 hooks Step Procedure Points R9364 R8139 Stop valve cover R12213 Shield plate ...

Страница 204: ...ting wires When reassembling fasten the wires with screws on the terminal board 1 Remove the 3 screws to remove the wiring fixture Then remove the all screws to disconnect the power supply cables and the connecting wires 2 Remove the electrical box 1 Release the outdoor temperature thermistor 2 Lift up the guard net and remove it R12192 Wiring fixture Power supply cable Connecting wire Terminal bo...

Страница 205: ... remove the right side panel 4 Remove the screw of the terminal board 5 Disconnect the connector for the fan motor S70 For removal procedure of the fan motor lead wire refer to Removal of Outdoor Fan Fan Motor Step Procedure Points R12217 Right side panel R12218 Terminal board R0254 S70 ...

Страница 206: ...nnector for the overload protector S40 7 Disconnect the connector for the electronic expansion valve coil S20 8 Disconnect the connector for the four way valve coil S80 9 Disconnect the connector for the thermistors S90 Step Procedure Points R0255 S40 R0256 S20 R0257 S80 R0258 S90 ...

Страница 207: ...ompressor 11 Disconnect the 2 connectors for the reactor 12 Release the discharge pipe thermistor Be careful not to lose the clip for the thermistor 13 Detach the clamp for the thermistors from the electrical box Step Procedure Points R0259 R0260 R12197 Discharge pipe thermistor R12279 Clip R0262 R12196 ...

Страница 208: ...Outdoor Unit RK X S42J2V1B SiBE041101 197 Removal Procedure 14 Remove the screw in front of the electrical box 15 Lift and remove the electrical box Step Procedure Points R0263 R0264 ...

Страница 209: ... Step Procedure Points 1 Remove the screw and remove the electrical box cover Preparation Remove the panels according to the Removal of Outer Panels Remove the electrical box according to the Removal of Electrical Box 2 Detach the insulation sheet The trimmed part goes front 3 Remove the 2 screws of the earth terminals R12274 Electrical box cover R8156 R8157 Insulation sheet Earth terminals R8158 ...

Страница 210: ...dure 4 Release the earth wire from the hook 5 Remove the 2 screws and detach the 1 clip to remove the radiation shield plate 6 Cut off the 5 clamps and disconnect the wire harnesses Step Procedure Points R8159 R12198 Radiation shield plate Clip R8161 R8162 ...

Страница 211: ...ve the 8 screws in total to remove the PCB 8 Lift up the back side slightly and unfasten the hooks of the front When reassembling make sure that the hooks of the electrical box are placed on the PCB 9 Lift up the PCB Step Procedure Points R8163 R8164 R8166 Hooks R8167 ...

Страница 212: ... 10 Remove the PCB 11 Detach the terminals from the terminal board Refer to page 17 for detail S20 electronic expansion valve coil S40 overload protector S70 fan motor S80 four way valve coil S90 thermistors Step Procedure Points R8168 R8169 S70 S40 S90 S20 S80 ...

Страница 213: ...SiBE041101 Outdoor Unit RK X S42J2V1B Removal Procedure 202 12 Remove the screw of the radiation fin Step Procedure Points R12214 Radiation fin R8171 ...

Страница 214: ...urning off all power supplies before disassembling work Step Procedure Points 1 Remove the partition plate When reassembling fit the lower hook into the bottom frame 1 Remove the 2 screws 2 The partition plate has hooks on the lower side Lift and pull the partition plate to remove R12282 Partition plate R8174 R8175 Remove the screw to remove the reactor ...

Страница 215: ...anket carefully 1 Untie the string open the sound blanket outer and pull it out 2 Remove the sound blanket top upper 3 Remove the sound blanket top lower 4 Open the sound blanket inner and pull it out Step Procedure Points R12199 Sound blanket outer R8180 R12200 Sound blanket top upper R8178 Sound blanket top lower R12201 Sound blanket inner ...

Страница 216: ...efore disassembling work Step Procedure Points 1 Remove the outdoor fan The screw has reverse winding Nut size M6 1 Remove the washer fitted nut of the outdoor fan 2 Remove the outdoor fan When reassembling align mark of the outdoor fan with D cut section of the motor shaft 2 Remove the fan motor 1 Disconnect the connector for the fan motor S70 R8181 10 mm R12236 R8182 D cut R8183 R8184 S70 ...

Страница 217: ...Removal Procedure 206 2 The figure shows the arrangement of the fan motor lead wire 3 Remove the 1 screw of the fan motor fixing frame 4 Remove the fan motor fixing frame Step Procedure Points R8185 R12202 Fan motor fixing frame R8187 R8188 ...

Страница 218: ...an motor lead wire 6 Release the fan motor lead wire When reassembling put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan 7 Remove the 4 screws and 4 rubber vibration isolators to remove the fan motor Step Procedure Points R8189 R7627 Lead wire Outdoor fan R12215 R8190 R8191 ...

Страница 219: ...ure Points 1 Release the discharge pipe thermistor Be careful not to lose the clip for the thermistor 2 Cut the clamp and pull out the outdoor heat exchanger thermistor 3 The thermistors for outdoor temperature discharge pipe outdoor heat exchanger are united as one assembly 4 The figure shows the arrangement of the thermistors R8192 Discharge pipe thermistor R12279 Clip R8193 Outdoor heat exchang...

Страница 220: ...wer supplies before disassembling work Step Procedure Points 1 Remove the peripheries Preparation Remove the sound blankets Detach the four way valve coil and the 2 clamps and then detach the wire harnesses 1 Remove the screw and remove the four way valve coil 2 Pull out the electronic expansion valve coil 3 Remove the putty 4 Remove the terminal cover R7703 R8203 R8204 R8205 R8195 Terminal cover ...

Страница 221: ...erant gas Cautions for restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconn...

Страница 222: ...tting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Step Procedure Points R8209 ...

Страница 223: ...inutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the lead wires of the compressor 3 Unfasten the hooks with a flat screwdriver to remove the overload protector R8195 Terminal cover R8196 Red U Yellow V Blue W U W V R8197 U W V R8198 U W V ...

Страница 224: ...happen that the refrigerant oil in the compressor catches fire prepare wet cloth so as to extinguish fire immediately Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heati...

Страница 225: ...ry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect Note Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get...

Страница 226: ... to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the panels Take care not to cut your finger by the fins of the outdoor heat exchanger 1 Remove the 4 screws and lift the top panel 2 Remove the 4 screws and remove the discharge grille Slide the discharge grille upwards and remove it Top panel R12283 R12315 Discharge grille...

Страница 227: ... The discharge grille has 4 hooks 3 Remove the 6 screws of the front panel 4 Push the front panel and lift the shield plate to unfasten the hooks Step Procedure Points Front panel R12284 Shield plate R14194 1 Push the front panel 2 Lift the shield plate upwards ...

Страница 228: ...the left side hooks and then the right side hook Remove the front panel Lift the front panel while pushing the left side panel inwards Lift the front panel and unfasten the right side hook When reassembling fit the right side of the front panel first Step Procedure Points ...

Страница 229: ...val Procedure 218 2 Remove the stop valve cover 1 Remove the screw of the stop valve cover 2 Pull down the stop valve cover to unfasten the hooks and remove it The stop valve cover has 6 hooks Step Procedure Points Stop valve cover R5252 R5254 ...

Страница 230: ...p Procedure Points 1 Remove the electrical box cover Preparation Remove the top panel and the front panel according to the Removal of Outer Panels This procedure is not necessary to remove the outdoor fan only 1 Remove the screw of the shield plate 2 Unfasten the 2 hooks and remove the shield plate 3 Unfasten the 4 hooks of the electrical box cover and remove it R5255 Shield plate Hook R12029 Elec...

Страница 231: ...t RK X S50J2V1B Removal Procedure 220 2 Remove the fan motor 1 Disconnect the connector for the fan motor S70 2 Release the fan motor lead wire from the 7 hooks Step Procedure Points R5258 S70 R5259 Fan motor lead wire R5260 ...

Страница 232: ...door fan with D cut section of the motor shaft 4 Remove the lower 2 screws from the fan motor first Be sure to remove the lower screws first If the upper screws are removed first the fan motor the center of gravity of which is toward the front may tilt down or fall getting you injured 5 Then remove the upper 2 screws Step Procedure Points R5262 Outdoor fan 10 mm R12236 R5263 R5264 Fan motor ...

Страница 233: ... 222 6 Release the fan motor lead wire from the 2 hooks and pull the fan motor out When reassembling put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan Step Procedure Points R5265 Fan motor lead wire ...

Страница 234: ...ore disassembling work Step Procedure Points 1 Remove the 2 screws of the shield plate Preparation Remove the top panel and the front panel according to the Removal of Outer Panels 2 Slide the shield plate upward to unfasten the 1 hook on the bottom left and then remove the shield plate 3 Disconnect the 2 power supply cables and the 1 earth wire R5266 Shield plate R5267 R5268 Earth wire ...

Страница 235: ...Unit RK X S50J2V1B Removal Procedure 224 4 Disconnect the 2 earth wires 5 Remove the 3 screws of the right side panel 6 Remove the screw of the electrical box Step Procedure Points Earth wires R5269 R5270 Right side panel ...

Страница 236: ...insert the 2 hooks of the lower part and the 1 hook of the upper back 8 Disconnect the connectors of the front side S20 electronic expansion valve coil S40 overload protector S80 four way valve coil S90 thermistors 9 Disconnect the relay connector for the compressor Step Procedure Points R5272 Hook R5273 Hooks R5275 S40 S20 S90 S80 ...

Страница 237: ...226 10 Release the clamp of the compressor relay harness with pliers 11 Detach the clamp and release the thermistor lead wires from the hook 12 Remove the screw Step Procedure Points R5277 Compressor relay harness R5278 Thermistor lead wire Hook Clamp R12316 ...

Страница 238: ...it RK X S50J2V1B SiBE041101 227 Removal Procedure 13 Release the harness of the outdoor temperature thermistor from the hook 14 Lift and remove the electrical box Step Procedure Points R9403 R5279 Electrical box ...

Страница 239: ...s before disassembling work Step Procedure Points 1 Disconnect the connectors from the service monitor PCB S52 S102 Preparation Remove the electrical box according to the Removal of Electrical Box 2 Detach the 4 clamps with pliers 3 Remove the screws of the terminal board and the earth wire R5280 Service monitor PCB S52 S102 Clamps R5281 R12285 Terminal board Earth wire ...

Страница 240: ...e 4 Unfasten the hook on the right 5 Open the terminal board 6 Disconnect the harnesses 1 Black 2 White 3 Red L1 Black L2 Brown N1 White N2 Blue 7 Disconnect the 2 connectors for the reactor HR1 HR2 Step Procedure Points R5285 N2 N1 L1 3 2 1 L2 R11473 HR2 HR1 ...

Страница 241: ... RK X S50J2V1B Removal Procedure 230 8 Remove the 3 screws of the main PCB 9 Unfasten the 4 hooks 10 Lift up and remove the main PCB Refer to page 19 for detail Step Procedure Points Main PCB R5287 R5288 Hooks Main PCB R5289 ...

Страница 242: ...utes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the sound blanket back 2 Remove the sound blanket outer Since the piping ports are torn easily remove the sound blanket carefully 3 Remove the sound blanket top upper Sound blanket back R5293 Sound blanket outer R5294 Sound blanket top upper ...

Страница 243: ...r 6 Release the discharge pipe thermistor Be careful not to lose the clip for the thermistor 7 Cut the clamp and pull out the outdoor heat exchanger thermistor Step Procedure Points Sound blanket top lower R11398 Sound blanket inner R5296 R12286 Discharge pipe thermistor R12287 Clip Outdoor heat exchanger thermistor R5292 Clamp ...

Страница 244: ...storation 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Note Do not use a metal saw for cutting pipes by all means because the sawdust co...

Страница 245: ... the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Before working make sure that the refrigerant gas is empty in the circuit Be...

Страница 246: ...Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the lead wires of the compressor Terminal cover R5302 R12204 Yellow V Red U Blue W ...

Страница 247: ... exposed to flames toxic gas may be generated Warning Since it may happen that the refrigerant oil in the compressor catches fire prepare wet cloth so as to extinguish fire immediately Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Before working make sure that the refrigerant gas is em...

Страница 248: ...ere is easy to disconnect and restore 2 Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect Note Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame c...

Страница 249: ...n 240 3 Trial Operation 242 4 Field Settings 243 4 1 Model Type Setting 243 4 2 When 2 Units are Installed in 1 Room 243 4 3 Standby Electricity Saving 244 4 4 Facility Setting Jumper and Switch cooling at low outdoor temperature 245 4 5 Jumper and Switch Settings 246 5 Application of Silicon Grease to a Power Transistor and a Diode Bridge 247 ...

Страница 250: ... Detail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation Refer to page 240 for forced cooling operation Gas stop valve Valve cap Close Liquid stop valve Service port R13628 Hex...

Страница 251: ...n ON OFF button SW1 on the indoor unit for 5 seconds 2 Press the forced cooling operation ON OFF button SW1 on the outdoor unit Command frequency 20 25 35 class 58 Hz 42 class 47 Hz 50 class 66 Hz End The forced cooling operation ends when any of the following conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 on the i...

Страница 252: ...ation and Field Settings Outdoor Unit 50 class Note 42 class models have no forced operation ON OFF button on the outdoor unit PCB Carry out forced cooling operation from indoor unit LED A SW4 ON A B CD S102 SW1 S2 R14176 Forced operation ON OFF switch ...

Страница 253: ...em then restarts operation with the previous mode when the circuit breaker is restored In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature Trial operation may be disabled in either mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 C to 28 C in cooling mode 20 C to 24 C...

Страница 254: ...p model Set the DIP switch to H P Cooling only model Set the DIP switch to C O 4 2 When 2 Units are Installed in 1 Room When 2 indoor units are installed in 1 room 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address Both the indoor unit PCB and the wireless remote controller need alteration Indoor Unit PCB 1 Remove the front grille 2 screws 2 Remove the ...

Страница 255: ... 25 35 class models following procedure is required for turning ON the function 1 Check that the main power supply is turned OFF Turn OFF if it has not been turned OFF 2 Remove the stop valve cover 3 Disconnect the selective connector for standby electricity saving 4 Turn ON the main power supply Caution Before connecting or disconnecting the selective connector for standby electricity saving make...

Страница 256: ... to 15 C by cutting jumper or turning on switch on the outdoor unit PCB If the outdoor temperature falls to 20 C or lower the operation stops If the outdoor temperature rises the operation starts again RKS20 25 35J2V1B RKS42J2V1B 1 2 3 S70 S40 S2 S90 J5 J4 J3 R12187 Cut the jumper J4 Top panel Notch PCB J3 J4 J5 J7 PCB Hook Fan motor lead wire Electrical box R14267 Electrical box cover Insulation ...

Страница 257: ...wing pages Indoor unit page 12 Outdoor unit page 15 17 For the location of the switch refer to page 19 LED A SW4 ON A B CD S102 SW1 S2 R12186 Turn on the switch SW4 B Jumper Function When connected factory set When cut JB on indoor unit PCB Fan speed setting when compressor stops for thermostat OFF effective only at cooling operation Fan speed setting Remote controller setting Fan rpm is set to 0 ...

Страница 258: ...r encouraging the heat radiation of the power transistor and the diode bridge Applying the paste should be implemented in accordance with the following instruction Remark There is the possibility of failure with smoke in case of bad heat radiation Wipe off the old silicon grease completely on a radiation fin Apply the silicon grease evenly to the whole Do not leave any foreign object such as solde...

Страница 259: ...SiBE041101 Appendix 248 Part 9 Appendix 1 Piping Diagrams 249 1 1 Indoor Unit 249 1 2 Outdoor Unit 250 2 Wiring Diagrams 254 2 1 Indoor Unit 254 2 2 Outdoor Unit 254 ...

Страница 260: ... REFRIGERANT FLOW FIELD PIPING 9 5CuT 6 4CuT FIELD PIPING M COOLING INDOOR UNIT FAN MOTOR HEAT EXCHANGER 6 4CuT HEATING THERMISTOR ON HEAT EXCH 4D058897E CROSS FLOW FAN COOLING 9 5CuT 6 4CuT M INDOOR UNIT 6 4CuT REFRIGERANT FLOW HEATING FAN MOTOR FIELD PIPING HEAT EXCHANGER FIELD PIPING 12 7CuT 4D058898E THERMISTOR ON HEAT EXCH ...

Страница 261: ...WITH FILTER MUFFLER WITH FILTER MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE FOURWAY VALVE NORMALLY OFF DISCHARGE PIPE THERMISTOR 3D059588B 9 5CuT MUFFLER COMPRESSOR 7 0CuT 9 5CuT 9 5CuT HEAT EXCHANGER REFRIGERANT FLOW 4 8CuT 6 4CuT 9 5CuT PROPELLER FAN M FIELD PIPING ACCUMULATOR 9 5CuT 6 4CuT 7 9CuT 6 4CuT 6 4CuT FIELD PIPING MUFFLER 7 0CuT 4 8CuT OUTDOOR UNIT COOLING MUFFLER 9 5CuT 9 5Cu...

Страница 262: ...CHARGE PIPE THERMISTOR 3D059591A OUTDOOR TEMPERATURE THERMISTOR OUTDOOR UNIT 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PROPELLER FAN MUFFLER HEAT EXCHANGER 7 9CuT 7 9CuT M COMPRESSOR 12 7CuT 12 7CuT 7 9CuT 7 9CuT 4 0CuT 4 0CuT CAPILLARY TUBE 4 CAPILLARY TUBE 1 12 7CuT MUFFLER 12 7CuT 6 4CuT 12 7CuT 6 4CuT 6 4CuT 6 4CuT FIELD PIPING REFRIGERANT FLOW FIELD PIPING 12 7 C...

Страница 263: ... WITH FILTER MUFFLER WITH FILTER MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE FOUR WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR 7 9CuT 9 5CuT 7 9CuT 7 0CuT M HEAT EXCHANGER MUFFLER 6 4CuT FIELD PIPING 9 5CuT HEATING 6 4CuT FIELD PIPING 9 5CuT 6 4CuT MUFFLER 9 5CuT REFRIGERANT FLOW 7 0CuT COOLING φ 4 0 ID 2 0CuT 4 8CuT PROPELLER FAN COMPRESSOR OUTDOOR UNIT 9 5CuT 6 4CuT 4 8CuT 9 5CuT MUFF...

Страница 264: ...WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR 3D059590B OUTDOOR UNIT 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PROPELLER FAN MUFFLER HEAT EXCHANGER 7 9CuT 7 9CuT M COMPRESSOR 12 7CuT 12 7CuT 7 9CuT 7 9CuT 4 0CuT 4 0CuT CAPILLARY TUBE 4 CAPILLARY TUBE 1 9 5CuT MUFFLER 9 5CuT 6 4CuT 12 7CuT 6 4CuT 6 4CuT 6 4CuT 6 4CuT FILTER RECEIVER FIELD PIPING FIELD PIPING REFRIGERA...

Страница 265: ...IPM1 FU3 Z3C X1M DB1 L1R HR1 20A HR2 AC1 L1 BRN L 1 BLK 1 MRM10 AC2 HN3 V2 WHT 2 2 N DB2 HN2 C5 HA2 HA1 S BLU GRY RED 3 3 HL3 C119 HL2 V3 ORG C6 FU1 L Q1 MR30 3 15A 1 WHT 1 V1 BLK N PCB2 DB3 BLK FU2 BLK 3 15A GRN YLW SA1 S11 S10 BLK BLK E1 W V U BLK IPM2 BLK 9 9 BLK MR30_B E2 MR30_A MRCW GRN BLU RED S70 YLW S100 S50 Z2C S90 S20 S40 X11A PCB1 S80 1 3 3 1 1 2 4 10 13 11 1 12 7 1 6 1 1 2 6 N 2 GRN ou...

Страница 266: ...S90 X11A CONNECTOR BLK BLACK BLU BLUE BRN BROWN GRN GREEN ORG ORANGE RED RED WHT WHITE YLW YELLOW 3D059615A MRM10 N HL1 YLW YLW V HR2 CONDENSER BLK S20 2 BLU BLK FU2 3 15A R2T V3 S90 DB2 W BLK DB3 Q1L 6 L M1F E FU1 BRN M R3T Z1C ORG V1 FU3 RED V BLK X11A MRM20 HR1 1 Z2C 3 S80 1 N 3 S N 3 RED HN1 S70 BLK RED N 7 30A Z4C 3 IPM1 C95 L1R BRN M1C V4 MR30 E2 C94 N BLK MS W MS R1T L1 1 indoor RED WHT SA1...

Страница 267: ...D PROTECTOR PM1 POWER MODULE PCB1 2 PRINTED CIRCUIT BOARD STEEL METAL TERMINAL STRIP FIXED PLATE 3D056145B L1R GRN GRN YLW WHT WHT Z1C X1M Z5C X12A FU3 HR2 GRN 7 HR1 RED RED M1F E1 E2 L SA2 MRM20 3 15A M BLU V2 Z2C AC1 BLU MRM10 BRN N BRN 6 P 1 N L BRN S70 ORG 9 8 ORG 1 WHT WHT V11 Z3C 7 N V6 AC2 2 BLU BLK M1C PM1 X11A WHT U U Z4C X2M RED RED 5 1 1 V V 1 M RED YLW YLW 4 2 2 3 S10 W 3 BLU BLU 3 3 W...

Страница 268: ...al carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 ...

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