Hitachi Utopia PAS-3HVRG Скачать руководство пользователя страница 30

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TROUBLESHOOTING

1-27

“RUN” light flickers and “ALARM” is indicated on the remote control switch.

The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.

In the case that the discharge gas superheat less than 10 deg. at the top of the compressor is
maintained for one hour, the alarm code is indicated.

Alarm
Code

Decrease of Discharge Gas Superheat

Is the thermistor on
top of compressor
good?

Is superheat value

under 10 degrees

Yes

Check the high-pressure
and compressor discharge
gas temperature and
calculate superheat value
by outdoor unit PCB.

Faulty Thermistor

See page 1-35 for the
thermistor resistance.

Is the thermistor
installed correctly
on the compressor?

Yes

Install it correctly.

Is it at cooling or

heating mode when the

alarm has occurred?

Does outdoor

fan motor operate

correctly?

Is gas leaking?

Yes

Superheat: under

10 degrees

Cooling

Heating Operation

Cooling Operation

Heating

Plug the connector
properly.

Repair leaks of gas.
Correctly charge refrigerant.

Remove the cause of
short path of discharge
air to the air intake of
the outdoor unit.

Is the connection on
indoor unit PCB and

intermediate connector

for expansion valve

connected properly?

Yes

Is refrigerant

correctly charged?

Yes

Charge correct refrigerant
volume.

Replace outdoor fan motor.

Содержание Utopia PAS-3HVRG

Страница 1: ... RCI 4 0HRG RCI 3 0HRG RCI 5 0HRG 2 Way Cassette Type RCD 2 5HRG RCD 4 0HRG RCD 3 0HRG RCD 5 0HRG Ceiling Type RPC 2 5HRG RPC 4 0HRG RPC 3 0HRG RPC 5 0HRG Outdoor Units RAS 3HVRG RAS 4HVRG RAS 5HVRG HITACHI UTOPIA SERIES INVERTER DRIVEN SPLIT SYSTEM HEAT PUMP AIR CONDITIONERS DC Inverter UTOPIA for Europe P5413554 ...

Страница 2: ...on 7 Segment Display 1 61 1 2 6 Function of LEDs 1 62 1 3 Procedure of Checking Each Main Parts 1 64 1 3 1 Self Checking of PCBs using Remote Control Switch 1 64 1 3 2 Self Checking of Remote Control Switch 1 66 1 3 3 Procedure of Checking Other Main Parts 1 68 2 SERVICING 2 1 2 1 Outdoor Unit 2 1 2 1 1 Removing Service Cover 2 1 2 1 2 Removing Air Outlet Grille 2 1 2 1 3 Removing Outdoor Fan 2 2 ...

Страница 3: ...Thermistor 3 9 3 5 1 Thermistor for Indoor Unit 3 9 3 5 2 Thermistor for Outdoor Unit 3 10 3 6 Electronic Expansion Valve 3 12 3 6 1 Electronic Expansion Valve for Outdoor Units 3 12 3 6 2 Electronic Expansion Valve for Indoor Units 3 13 3 7 High Pressure Switch and Pressure Switch for Control 3 14 4 FIELD WORK INSTRUCTION 4 1 4 1 Overheating in Case of Using PC 5H 4 1 4 2 Alarm 36 4 2 4 3 Select ...

Страница 4: ... following setting position shown in the table below Numbering must start from 0 for every outdoor unit b Capacity Code Setting DSW3 No setting is required due to setting before shipment This switch is utilized for setting the capacity code which corresponds to the Horse Power of the indoor unit DSW7 RSW DSW3 DSW5 PCB for Indoor Unit 01 2 3 4 5 6 7 8 9 A B C E F D Rotary Switch Setting Rotary Swit...

Страница 5: ...red due to setting before shipment This switch is utilized for setting the capacity code which corresponds to the Horse Power of the indoor unit 01 2 3 4 5 6 7 8 9 A B C E F D Rotary Switch Setting Rotary Switch Setting No 0 Unit No 1 Unit No 2 Unit No 3 Unit No 4 Unit No 5 Unit No 6 Unit No 7 Unit No 8 Unit No 9 Unit No 10 Unit No 11 Unit No 12 Unit No 13 Unit No 14 Unit No 15 Unit Setting Positi...

Страница 6: ... case of using PC 2H2 set as below RPI 2 0HRG Model Code c Refrigerant Cycle No Setting DSW5 Setting is required Setting position before shipment is all OFF Non Polarity 2 Wired Factory Setting Non Polarity 2 Wired for PC P1H Polarity 3 Wired PCB Left Side Right Side Indication of SW1 Japanese Letters Left Side Polarity 3 Wired for PC 2H2 Right Side SW1 SW1 Turn Right Side 1 2 ON OFF DSW7 1 2 ON O...

Страница 7: ...h from other outdoor units for service and maintenance NOTE DSW2 DSW1 DSW3 DSW4 DSW5 For Test Run Optional Function Setting Ref Cycle No Setting Transmission Setting Capacity 1 Test Run Cooling 2 Test Run Heating 3 OFF 4 Compressor Forced Stop 1 OFF 2 Energy Saving Operation ON Cancel OFF Set 3 Night Shift Mode Low Sound OFF No Set ON Set 4 Cancellation of Outdoor Ambient Temp Limit OFF No Set ON ...

Страница 8: ... Voltage 5V Control Cable Power Source Cable Pay an attention to the phase of power source when wiring L1 1 220V 50Hz 240V 50Hz 220V 60Hz 1 220V 50Hz 240V 50Hz 220V 60Hz Remote Control Switch Cable Field Supplied Shielded Twist Pair Cable 0 75m2 x 2 This cable dose not have any polarity Do not apply an excessive voltage to this cable Rated Voltage 12V Remote Control Switch Option Earth Wiring Eart...

Страница 9: ...y remote control switch see Alarm Code 35 Twin Type Only Outdoor Unit Printed Circuit Board PCB1 2 Turn on the Outdoor Unit 3 Auto addressing Starts Normal Case 1 The outdoor unit s on board 7 segment LED display is not indicated continues to flash after 30 seconds Abnormal Case 2 The outdoor unit s on board 7 segment LED display indicates as follows if there is something wrong A The indoor unit s...

Страница 10: ...Replace the AC chopper for indoor fan and fuse Replace the AC chopper for indoor fan fan motor and fuse Replace the AC chopper for indoor fan and fuse Short Circuit Supplied between Wires Melted Fuse at Control Circuit Check for any uncovered part of wires Remove the cause of short circuit and replace the fuse Short Circuit of Control Circuit to Earth Measure insulation resistance Measure insulati...

Страница 11: ...dicated in TEST RUN Incorrect Wiring Connection Unconnected Wires to PCB Failure of PCB Failure of PCB 1 Refer to Item 1 3 2 2 Refer to Item 1 3 1 1 Refer to Item 1 3 2 2 Refer to Item 1 3 1 Cause Check Item Action Turn OFF Main Switch Check cable and connections Repair cable or connect it Phenomenon Disconnection or Insufficient Contacting of Remote Control Cable Failure of Remote Control Switch ...

Страница 12: ...or Unit Fan Motor Disconnected Coil Measure insulation resistance Burnt Out Coil Check connections Failure of One of PCBs Disconnected Wiring to PCB Check PCB by self checking 1 Correctly connect wiring Replace PCB if failed Check it by self checking 1 Check it by Check Mode 2 Failure of PCB Replace or correctly connect wires if abnormality exists Failure of Air Inlet Thermistor Failure of Thermis...

Страница 13: ...rect Optional Setting The Comp does not Stop or Start even if the Setting temperature on LCD is Changed Check Setting Condition of Thermistor of Remote Control Switch by Optional Setting Setting and Control 00 Control by Indoor Thermistor for Suction Air 01 Control by Thermistor of Remote Control Switch 02 Control by Average Value of Indoor Thermistor for Suction Air and Thermistor of Remote Contr...

Страница 14: ...hen it is abnormal Replace if failed Replace if PCB is failed Disconnected Wire of Thermistor Measure resistance of coil Failure of 4 Way Valve Disconnected 4 Way Valve Coil Enforced power supply Replace 4 Way valve Incorrect Activation of 4 Way Valve Check connectors Failure of Outdoor Unit PCB Disconnected Wires to PCB Correctly connect wiring Replace it when check mode is not available Failure ...

Страница 15: ... Heat Exchanger Check temp difference at inlet and outlet of strainer Replace strainer in indoor unit Clogged Strainer in Indoor Unit Clogging at Low Pressure Piping Check for clogging Remove clogging Check for connection cord and connector Replace connector Check for clogged air filter Clean air filter Check for obstacle at inlet or outlet Remove obstacles Excessively Low Air Temp to Indoor Unit ...

Страница 16: ...door Unit Remove heat source Is service space for outdoor unit sufficient Secure service space Correct fan speed Replace fan motor Insufficient Air Flow to Outdoor Unit Heat Exchanger Check for clogging Remove clogging Check for connecting cord and connector Replace connector Is there operation sound from coil Replace coil Is thermistor on compressor normal Replace thermistor Is thermistor install...

Страница 17: ...of short circuited air Excessively Low Air Temp through Outdoor Unit Heat Exchanger Measure field supplied piping Use specified pipes Excessively Small Diameter or Long Piping Is outdoor unit heat exchanger clogged Remove clogging Is there any obstacles at inlet or outlet of outdoor unit Remove obstacles Is service space for outdoor unit sufficient Secure sufficient service space Check for speed o...

Страница 18: ...e Check for filter clogging Remove clogging Check for any obstacles at inlet or outlet of indoor unit Remove obstacles Check indoor fan speed Replace fan motor Insufficient Air Flow to Indoor Unit Heat Exchanger Check temp difference between inlet and outlet of 4 way valve Excessively High Suction Pressure Replace failed expansion valve of indoor unit Replace 4 way valve Malfunction or Internal Le...

Страница 19: ... Sound from Compressor Faulty Installation Tightly fix it Ensure superheat Liquid Ref Compression Check it by viewing Remove foreign particles Foreign Particles Inside of Fan Casing Check it by viewing Adjust position of fan runner Indoor Unit Fan Runner is Hitting Casing Check it by viewing Adjust position of propeller fan Outdoor Unit Propeller Fan is Hitting Shroud Check surface of contacts Rep...

Страница 20: ...correct Indoor Unit No Setting Duplication of Indoor Unit No 36 Incorrect Combination of Indoor Unit FSG2E series connects to HVRG series outdoor unit European Area Only HRG series of the indoor unit is connected to FSG 1 and FXG 1 series outdoor units European Area Only 38 Abnormality of Protective Circuit in outdoor Unit Failure of Protection detecting Circuit 41 Overload cooling Possibility of ...

Страница 21: ... No 1 Refer to 1 3 1 Self Checking of PCBs using Remote Control Switch Alarm Code Activation of Safety Device in Indoor Unit THM1 THM2 THM3 THM4 THM5 CN19 CN25 THM1 THM2 THM3 THM4 THM5 THM6 CN1 CN3 CN4 HA CN14 RCI RCD RPI Types Other Types LED1 LED2 LED4 CN12 CN9 CN10 CN14 CN13 R24 Cause Check Item Action Turn OFF Main Switch Phenomenon Activation of Float Switch Check continuity when drain level ...

Страница 22: ...ed This alarm is indicated when one of safety devices is activated during compressor running Alarm Code Activation of Safety Device in Outdoor Unit Does CMC ON when starting Is the voltage between 1 3 of PCN9 220V or 240V during Y52C ON Faulty PCB1 No No Normal PCB1 Yes Yes Does CMC turn ON for more than 3 seconds Yes Yes Check activation of the following safety devices Remove the cause after chec...

Страница 23: ...y High Temp Air to Indoor Unit Heat Exchanger Check wiring Check connections Incorrect Connection Malfunction A Contact Clogging of Heat Exchanger Remove clogging Check for dust on air filter Remove dust Check for any obstacles at inlet or outlet of heat exchanger Remove obstacles Check the service space Secure service space Check for speed Outdoor Fan Cooling Indoor Fan Heating Replace fan motor ...

Страница 24: ... attaching state of discharge gas thermistor Replace thermistor Reattach thermistor Faulty or Malfunction of Expansion Valve Check cycle operating temp and expansion valve opening Charge refrigerant correctly Overcharged Refrigerant Check ambient temp and pressure Recharge refrigerant after vacuum pumping Mixture of Non Condensable Gas in Refrigerant Cycle Check for clogging Remove clogging Cloggi...

Страница 25: ...intained for 3 minutes after normal transmitting between indoor units and outdoor unit and also abnormality is maintained for 30 seconds after the micro computer is automatically reset The alarm is indicated when the abnormal transmitting is maintained for 30 seconds from starting of the outdoor unit Investigate the cause of overcurrent and take necessary action when fuses are melted or the breake...

Страница 26: ...ses of outdoor unit power supply No Check wiring between outdoor unit and indoor units or fuse EF1 for PCB1 No Does refrigerant system setting between DSW4 on PCB1 and DSW5 on PCB1 correspond Yes No Does Alarm occur with all indoor units Yes No Faulty PCB1 PCB1 Outdoor Unit Printed Circuit Board PCB1 Indoor Unit Printed Circuit Board Outdoor Unit Check other indoor units No No No Is the fuse for P...

Страница 27: ... replace fuse Short Circuit between Wires Measure insulation resistance Remove short circuit and replace fuse Short Circuit of Control Circuit to Ground Disconnected Wires Insufficient Contacting or Incorrect Connection Check continuity of wires Check for looseness of connection screws Check terminal Nos Replacing wires repairing tightening screws and correct wiring Between Outdoor Unit and Indoor...

Страница 28: ...intained for 30 seconds after the micro computer is automatically reset The alarm is indicated when the abnormal transmitting is maintained for 30 seconds from starting of the outdoor unit Alarm Code Abnormal Transmitting between Inverter and Outdoor PCB1 Normal ISPM check the wiring again Yes Yes No Is LED2 Green on PCB1 flickering Faulty PCB1 No Is LED2 Green on PCB1 flickering Faulty ISPM Incor...

Страница 29: ...ange DC1000V R S W RB V T U N PD P TB2 R216 R215 ZN20 LED201 ZN202 R201 R200 CN207 CN206 CN9 PC207 C PC208 CN8 RB N P P1 Does the voltage fall during operation by operation of other apparatus Is connection correctly between ISPM and DCL CB or CMC Does LED201 on ISPM ON Check capacitors CB Restart operation Check wiring and cable capacity Connect correctly Replace capacitors Capacitors have high vo...

Страница 30: ...ck the high pressure and compressor discharge gas temperature and calculate superheat value by outdoor unit PCB Faulty Thermistor See page 1 35 for the thermistor resistance No No No Is the thermistor installed correctly on the compressor Yes Install it correctly No No Is it at cooling or heating mode when the alarm has occurred Does outdoor fan motor operate correctly Is gas leaking Yes Yes Yes N...

Страница 31: ...looseness replace connector or repair connections Incorrect Connection Check connections Replace PCB and check operation Faulty PCB Fault Replace PCB if faulty Repair wiring connections Disconnected Wires for Ex Valve Control Check ref cycle and the electrical system Repair wiring Ref Cycle is Different from the Electrical System Measure pressure Refer to Figure in Test Run of TCII Correctly charg...

Страница 32: ...he top of the compressor is maintained higher than 140 C for 5 seconds during cooling 2 The temperature of the thermistor on the top of the compressor is maintained higher than 120 C for 10 minutes or the temperature of the thermistor on the top of the compressor is maintained higher than 140 C for 5 seconds during heating Alarm Code Excessively High Discharge Gas Temperature at the Top of Compres...

Страница 33: ...ake of PCB Is resistance of THM1 between 0 24kΩ and 840kΩ Cause Check Item Action Turn OFF Main Switch Phenomenon Faulty Intake Air Thermistor Check resistance Replace thermistor if faulty Fault Check connection Repair wiring and connections Incorrect Connection Replace PCB and check operation Replace PCB if faulty Faulty PCB NOTE This data is applicable to the following thermistors 1 Indoor Unit ...

Страница 34: ... for Indoor Unit Heat Exchanger Liquid Refrigerant Pipe Temperature Freeze Protection Thermistor Yes Connect it No Refer to page 1 30 for thermistor resistance Faulty PCB Is the thermistor connected to THM2 of PCB Yes Faulty Thermistor No Is resistance of THM2 between 0 24 and 840kΩ Cause Check Item Action Turn OFF Main Switch Phenomenon Faulty Air Outlet Thermistor Check resistance Replace thermi...

Страница 35: ... Alarm Code Abnormality of Thermistor for Indoor Unit Heat Exchanger Gas Refrigerant Pipe Temperature Gas Piping Thermistor Refer to page 1 30 for thermistor resistance Yes Yes Connect it No Faulty Thermistor Faulty PCB No Is it connected to THM5 of PCB Is resistance of THM5 between 0 24kΩ and 840kΩ Cause Check Item Action Turn OFF Main Switch Phenomenon Faulty Thermistor for Indoor Unit Heat Exch...

Страница 36: ...door fan run Is fan motor hot Is continuity present at the internal thermostat of indoor fan motor Is connection bad at the connector Is the coil resistance of fan motor normal Check indoor temperature If it is unusual take suitable action to reduce it Cause Check Item Action Turn OFF Main Switch Phenomenon Activation of Internal Thermostat for Indoor Unit Fan Motor Measure resistance by tester Ch...

Страница 37: ...ith the fan speed setting is Hi Yes Replace PCB2 No No Faulty PCB1 Replace PCB1 Is fan motor speed control command to fan motor correctly Faulty PCB1 or Transformer Insufficient voltage for PCB1 Faulty PCB1 or Transformer Faulty Fan Motor Is LED4 on PCB1 OFF Replace PCB1 or Transformer Replace PCB1 or Transformer Replace Fan Motor No Yes Faulty PCB2 Is the voltage between GND of PCB1 and PC1 2 of ...

Страница 38: ... OFF Main Switch Phenomenon Faulty Top of Compressor Thermistor Check resistance Replace thermistor if faulty Fault Check wiring to PCB1 Repair wiring and connections Incorrect Connection Replace PCB1 and check operation Replace PCB1 if faulty Faulty PCB1 Yes Connect it No Faulty PCB Is the thermistor connected to THM9 of PCB Yes Faulty Thermistor No Is resistance of THM9 between 1kΩ and 6kΩ Tempe...

Страница 39: ...uring running operation continues based on the assumption that the outdoor temperature is 35 C Cooling 6 C Heating Alarm Code Abnormality of Thermistor for Outdoor Air Temperature Outdoor Unit Ambient Thermistor Yes Yes Connect it No Faulty Thermistor Refer to page 1 30 Faulty PCB1 No Is it connected to THM7 TA of PCB1 Is resistance of THM7 between 0 2kΩ and 500kΩ Cause Check Item Action Turn OFF ...

Страница 40: ...hed to the heat exchanger as shown below figure Cause Check Item Action Turn OFF Main Switch Phenomenon Faulty Thermistor for Evaporating Temperature during Heating Check resistance Replace thermistor if faulty Fault Check wiring to PCB1 Repair wiring and connections Incorrect Connection Replace PCB1 and check operation Replace PCB1 if faulty Faulty PCB1 Alarm Code Abnormality of Thermistor for Ev...

Страница 41: ... Yes Yes Is DSW3 on the indoor unit PCB set correctly Set the capacity for PCB No Cause Check Item Action Turn OFF Main Switch Phenomenon Check combination of indoor units and capacity setting on PCB Correctly set dip switch DSW3 Incorrect Capacity Setting of Indoor Unit Check outdoor unit model by calculating total indoor units capacity Ensure that total indoor unit capacity is 100 Total Indoor U...

Страница 42: ...s alternately indicated on the set temperature section and the alarm code is indicated on the display of the outdoor unit PCB This alarm code is indicated when AC 220V or 240V is supplied to voltage PCN9 1 and 3 on PCB1 in the outdoor unit during CMC is opened Alarm Code Abnormality of Picking up Circuit for Protection Outdoor Unit Alarm Code Incorrect Indoor Unit No Setting RUN light flickers and...

Страница 43: ...han 55 degree and top of compressor temperature is more than 95 degree Yes Yes Yes Yes Faulty PCB1 No No No Faulty PCB1 No Is CMC ON Is CMC ON more than 3 seconds Is protection device activated Is the voltage between PCN9 1 and 3 220V 240V Check the following value by remote control switch 1 Top of Compressor Temperature 95o C or less 2 Evaporating Temperature of Outdoor Unit 55oC or less If excee...

Страница 44: ...temp and pressure Recharge refrigerant after vacuum pumping Mixture of Non Condensable Gas in Refrigerant Cycle Check for clogging Remove clogging Clogging of Discharge Piping Check continuity of Fuse Replace it if faulty Melted Fuse Replace new PCB and check Replace it if faulty Failure of PCB Measure discharge pressure Check continuity after decreasing of pressure Replace it if faulty Faulty Pre...

Страница 45: ...the following value by remote control switch 1 Top of Compressor Temperature 95o C or less 2 Liquid Refrigerant Piping Temperature of Indoor Unit 55oC or less If exceeding the above value repair it Cause Check Item Action Turn OFF Main Switch Phenomenon Clogging of Heat Exchanger Remove it Remove it Remove it Check for dust on air filter Check for any obstacle at inlet or outlet of heat exchanger ...

Страница 46: ...ck ambient temp and pressure Recharge refrigerant after vacuum pumping Mixture of Non Condensable Gas in Refrigerant Cycle Check decreasing air flow volume at pressure switch for control activative Replace thermistor for evaporating temp if faulty Faulty of Outdoor Fan Control Check activated pressure and connecting wire Replace it if pressure switch for control is faulty Faulty of Pressure Switch...

Страница 47: ...CB Is resistance of THM3 and THM8 between 0 24kΩ and 500kΩ Connect it No Repair leaks of gas No Recharge refrigerant Yes Cause Check Item Action Turn OFF Main Switch Phenomenon Faulty Freeze Protection Thermistor of Indoor Unit Evaporating Thermistor of Outdoor Unit Excessively Low Suction Pressure in Vacuum Check resistance Replace thermistor if faulty Fault Check wiring to PCB Repair wiring and ...

Страница 48: ... 18Hz after compressor is started one of the absolute value of running current at each phase Phase U Phase U Phase V Phase V is less than 0 5A including 0 5A Alarm Code Abnormality of Current Transformer 0A Detection 1 P17 is shown at 7 segment on the outdoor unit PCB 2 Perform the high voltage discharge work by referring to 1 3 3 before checking and replacing the inverter parts Replace Comp Resta...

Страница 49: ...mulated time reaches up to 3 5 minutes in 10 minutes 1 Before replacing or the checking of inverter components refer to item 1 3 3 regarding electrical discharge Alarm Code Activating Protection Against Instantaneous Overcurrent of Inverter 1 Refer to next page Restart operation No Smaller than activation current Yes The ISPM is normal Activation Current 14 5A 16 0A 24 5A Model 3HP 4HP 5HP Is disc...

Страница 50: ...urrent as same as rated current Page 1 46 Is it 170V more during operation by operation of apparatus Check the ISPM 1 Is it 170V or more during operation Replace the ISPM 2 Restart operation Does it trip soon Are the input currents of single phase nearly equal 3 _ Yes Yes Yes Yes Yes Yes Yes It trips No No No No No No No No No Input currents out of balance It trips immediately Faulty Good Is the s...

Страница 51: ...rding electrical discharge 2 Regarding the checking of the ISPM refer to item 1 3 3 2 3 Turn ON the No 1 switch of the dip switch DSW1 on ISPM when restarting with disconnecting the terminals of the compressor After troubleshooting turn OFF the No 1 switch of the dip switch DSW1 on ISPM 4 Silicone grease P22760 is available as a spare parts Alarm Code Protection Activation of ISPM Yes Yes Yes Turn...

Страница 52: ...operation is performed up to the occurrence of 2 times Conditions ISPM Thermistor is more than 100 deg Alarm Code Activating Protection Against Temperature Increasing of Inverter Fin Yes No Restart operation Does it trip soon Is the heat exchanger of outdoor unit clogged No Apply the silicon grease between ISPM and fin securely 2 Replace the ISPM 1 Replace the ISPM 1 Remove clogging Yes Yes No Is ...

Страница 53: ...occurs when the fan motor is stopped Alarm Code Abnormality of Fan Motor Protection Are the connectors abnormal Good Replace the fan motor In the case that the fan motor does not run even the PCB1 is replaced replace ISPM Remove the foreign matter Does the motor run This alarm is indicated due to detected overcurrent by the contrary wind This is normal No Alarm code is not indicated Yes Does the f...

Страница 54: ...00 Unit Code E 00 Alarm Code Incorrect Wiring Among Indoor Units Yes Is wiring among indoor units right No JP4 Repair the wiring among indoor units Turn off the main power switch and cut the wire JP4 at remote control switch then turn on the main power switch again Cause Check Item Action Turn OFF Main Switch Phenomenon Wiring Trouble Check the wiring No Repair the wiring correctly Incorrect Wirin...

Страница 55: ...ecrease in Discharge Gas Superheat 08 Increase in Discharge Gas Temperature 41 Cooling Overload 42 Heating Overload 47 Low Pressure Decrease Protection Activating These alarms are able to be checked by the CHECK Mode 1 Follow the action indicated in each alarm chart These alarms are cleared only by turning OFF the main power switch to the system However careful attention is required before startin...

Страница 56: ... COOL HIGH A C CHECK COOL HIGH A C CHECK COOL HIGH A C CHECK COOL HIGH VENTI A C CHECK COOL HIGH A C ADDS RN CHECK CHECK After 7 seconds See A To View the Next Indication TEMP Press TEMP Press Check Mode 1 Current data will be displayed Check Mode 2 Data held immediately before failure will be displayed Check Mode PC P1H Use the remote control CHECK switch in the following cases 1 When the RUN lam...

Страница 57: ...sor o C 5 Outdoor Unit Ambient Air Temp oC 6 Indoor Unit Heat Exchanger Gas Pipe Temp o C 7 Outdoor Unit Evaporating Temp during Heating oC 8 Control Information 9 Discharge Gas Temp at the Top of Comp Chamber o C 10 See 1 3 1 Self Checking of PCB s using Remote Control Switch in Service Manual NOTE 1 During transient period such as starting time etc may be indicated for a limited time This is ind...

Страница 58: ...at 17 Retry due to Inverter Tripping Retry due to Abnormal Current to Comp 18 Retry due to Voltage Decrease Other Retry due to Inverter 19 Expansion Valve Opening Change Protection 20 Operation Mode Changeover of Indoor Unit 21 Enforced Thermo OFF Twin Type Only NOTE 5 24 Thermo OFF during Energy Saving Operation 25 Retry due to Input Protection NOTE 1 Explanation of Term Thermo ON A condition tha...

Страница 59: ...pment DSW4 Indication with 16 numbers In case of Twin Type it is indicated P02 The indication of 255 is normal This is an indication for internal information for the remote control switch This does not have any specific meaning This is an indication for internal information This is an indication for internal information This is an indication for frequency of inverter The capacity of the indoor uni...

Страница 60: ...e Indication of Temperature etc 1 Indoor Unit Intake Air Temp at Thermistor oC Indoor Unit Discharge Air Temp at Thermistor o C 2 Indoor Unit Heat Exchanger Liquid Pipe Temp Freeze Protection o C 3 Outdoor Air Temp o C 4 Indoor Heat Exchanger Gas Pipe Temp o C 5 Evaporating Temp at Heating o C 6 Control Information 7 Discharge Gas Temp at the Top of Comp Chamber o C 8 to next page Correspond to ch...

Страница 61: ... Valve MV1 Opening 14 Indoor Unit Expansion Valve Opening 13 Expansion Opening Indication Compressor Running Current A 15 Estimated Electric Current Indication Temperature Indication Returns to Temperature Indication Correspond to check mode 1 Correspond to check mode 1 Correspond to check mode 1 Correspond to check mode 1 Correspond to check mode 1 Correspond to check mode 1 Correspond to check m...

Страница 62: ...rter Compressor PSW3 PSW2 4 PSW2 PSW3 Request Frequency from Indoor Unit PSW3 PSW2 5 PSW2 PSW3 Outdoor Air Flow Ratio PSW3 PSW2 6 PSW2 PSW3 Outdoor Unit Expansion Valve Opening PSW3 PSW2 7 PSW2 PSW3 Y21 FAN2 YCH 63H2 FAN1 Check PSW3 PSW2 In case that frequency is higher than 100Hz two digits flicker 25 to 115 Hz In case that frequency is higher than 100Hz two digits flicker 00 to 100 In case that ...

Страница 63: ...sion Valve Opening PSW3 PSW2 15 PSW2 PSW3 00 to 100 Indoor Unit Heat Exchanger Liquid Pipe Temperature Freeze Protection PSW3 PSW2 16 PSW2 PSW3 19 to 127 C In case that expansion valve opening is higher than 100 two digits flicker Indicates 19 when below 19 C Indoor Unit Intake Air Temperature PSW3 PSW2 17 PSW2 PSW3 Indoor Unit Discharge Air Temperature PSW3 PSW2 18 PSW2 PSW3 Indoor Unit Cause of ...

Страница 64: ...stop signal comes from all rooms NOTE The protection control code being indicated on 7 segment display is changed to an alarm code when the abnormal operation occurs Also the same alarm code is indicated on the remote control switch Protection Control Low Pressure Ratio Control Code Protection Control Insufficient Voltage Excessively High Voltage Retry Code Inverter Trip Retry High Pressure Increa...

Страница 65: ...cates the transmission state between Yellow the indoor unit and outdoor unit Normal Condition Flickering One Time Some Seconds Abnormal Condition Activated or Deactivated more than 30 seconds or Flickering 30 times 1 second 3 LED4 This LED4 indicates the power supply 5V for Red micro computer Normal Condition Activated Abnormal Condition Deactivated Part Name Contents of Functions Remarks This ind...

Страница 66: ...or unit and outdoor unit Normal Condition Flickering Abnormal Condition Activated or Deactivated 18 SEG1 This SEG1 indicate the following alarm protective safety device has tripped or checking items Part Name Contents of Functions Name of Printed Circuit Board LED Red This indicates the voltage between both terminal of capacitor 201 CB1 and CB2 for inverter part Activated The voltage between both ...

Страница 67: ...y 3 Abnormality 1 After Approx 5 sec Max 30 sec in case of transmission failure between indoor unit and outdoor unit Max 3 Types of Abnormalities indicated Result After 1 Seconds After 7 Seconds After 1 Seconds After 1 Seconds to next page Contents Abnormality 2 Heat Exchanger Evaporation Temp Thermistor Low Pressure Sensor Comp Discharge Gas Temp Thermistor High Pressure Sensor Transmission of In...

Страница 68: ...ircuit Fan Circuit Protection Circuit PCB in Outdoor Unit Relay Circuit Dip Switch Option Circuit 3 In the case that this troubleshooting is performed in the system using the central station indication of the central station may change during this procedure However this is not abnormal ADDS RN TEMP Press ex Indication of Unit No 1 CHECK Press RESET ADDS RN Result After 1 Second After 1 to 5 Second...

Страница 69: ...ollowing 3 switches During operation they can be depressed TEMP 4 After the LCD indication changes as shown in the right figure the RUN indicator flickers twice To the next page 6 The LCD indication changes as shown below The remote control switch automatically starts to check the transmission circuit 5 The LCD indication changes as shown below Depress all the switches 13 switches one by one Every...

Страница 70: ...l switch is activated again the RUN indicator is ON and the operation is started Therefore depress switch and stop operation NOTES 1 In case that the operation is not automatically started when the remote control switch is activated again the detection circuit for momentary stoppage may be abnormal However it would not interfere the normal operation 2 There is a case that the operation is automati...

Страница 71: ...ower than DC50V b Connect connecting wires to an electrical solder bit c Connect the wires to terminals P and N on ISPM Discharging is started resulting in hot solder bit d Wait for 2 or 3 minutes and measure the voltage once again Check to ensure that no voltage is charged TB3 R S W RB V T U N PD P TB2 R216 R215 ZN20 LED201 ZN202 R201 R200 CN207 CN206 CN9 PC207 C PC208 CN8 RB N P P1 Solder Bit Pl...

Страница 72: ...of ISPM measure the resistance If all the resistances are more than 100 kΩ it is normal d By touching the side of the tester to the N terminal of ISPM and the side of the tester to R and S of ISPM measure the resistance If all the resistances are more than 1 kΩ it is normal 2 Checking Procedures ISPM Rectification Parts of Internal Circuit of ISPM Common R S T P1 N TB3 R S W RB V T U N PD P TB2 R2...

Страница 73: ... If all the resistances are more than 100 kΩ it is normal h By touching the side of the tester to the N terminal of ISPM and the side of the tester to U V and W of ISPM measure the resistance If all the resistances are more than 1 kΩ it is normal P N U V W TB3 R S W RB V T U N PD P TB2 R216 R215 ZN20 LED201 ZN202 R201 R200 CN207 CN206 CN9 PC207 C PC208 CN8 RB N P P1 U V W P TB3 R S W RB V T U N PD...

Страница 74: ...e side of the tester to N terminal of ISPM If the resistance is more than 90 kΩ it is normal m By touching the side of the tester to the RB terminal of ISPM and the side of the tester to N terminal of ISPM If the resistance is more than 90 kΩ it is normal P1 PB P N N TB3 R S W RB V T U N PD P TB2 R216 R215 ZN20 LED201 ZN202 R201 R200 CN207 CN206 CN9 PC207 C PC208 CN8 RB N P P1 RB P TB3 R S W RB V ...

Страница 75: ...sistance If all the resistances are from 1 to 5 kΩ it is normal d By touching the side of the tester to the L2 terminal of ACT module and the side of the tester to the I terminal of ACT module measure the resistance If all the resistances are from 50 to 200 kΩ it is normal 3 Checking Procedures ACT Module for 5HP only Outer Appearance and Internal Circuit of ACT Module L2 P Power Factor Control L1...

Страница 76: ...n does not increase during cooling Fully Closed It is abnormal if the temperature does operation not increase Locked It is abnormal under the following It is abnormal if the liquid pipe pressure with conditions The temperature of freeze does not increase and the outlet Slightly Open protection thermistor becomes lower temperature of the expansion valve than the suction air temperature when decreas...

Страница 77: ......

Страница 78: ...If necessary seal pipe ends using caps or tape Remove the two fixing screws upper part 1 lower part 1 slide the service cover downward and remove 2 1 2 Removing Air Outlet Grille Remove the two 2 fixing screws of the shroud Lift the air outlet grille holding the lower parts and unhook the extrusion 3 locations of the air outlet grille from the shroud Phillips Screwdriver Tool TURN OFF all power so...

Страница 79: ... 4 fixing screws for the motor TURN OFF all power source switches NOTES 1 When mounting the motor ensure the cables point directly downward Fix the protection tube edge downward to ensure the water may not keep in it 2 Fix the motor wires onto the motor clamp with a plastic tie to prevent them obstructing the propeller fans 3 Mounting Propeller Fan Insert the skidding protection part of fan boss i...

Страница 80: ...iring from the compressor terminals NOTE Check to ensure each terminal Nos when connecting the compressor power wires If incorrectly connected the compressor will fail due to reverse rotation 5 Remove the soundproof cover thermistor holder on the compressor and thermistor TURN OFF all power source switches Phillips Screwdriver Charge Hose Adjustable Wrench 2 Tool Upper Cover Rear Cover Front Pipe ...

Страница 81: ...ll power source switches NOTES 1 To prevent contamination of the refrigerant with water or foreign particles do not expose open pipes to atmosphere for long periods If necessary seal pipe ends using caps or tape 2 Remove the caps for the new compressor just before replacing the compressor Seal suction and discharge pipe using tape when mounting to prevent the foreign particles barge in the compres...

Страница 82: ...minals b Remove the high pressure switch and pressure switch for control from the brazing part by a burner TURN OFF all power source switches Phillips Screwdriver Charge Hose Burner Tool Upper Cover Screw M5 Q ty 9 Liquid Tank Front Pipe Cover Pipe Rear Cover Rear Cover Valve Stay Electrical Box Electrical Box Upper Cover Liquid Tank High Pressure Switch High Pressure Switch Pressure Switch for Co...

Страница 83: ...e electrical box c Remove the coil for the reversing valve after removing the fixing screw 1 piece 2 1 7 Removing Coil for Reversing Valve TURN OFF all power source switches Phillips Screwdriver Tool RAS 3HVRG and 4HVRG RAS 5HVRG Do not touch the electrical parts when LED201 Red on the ISPM is lit to prevent from an electrical shock Fixing Screw for Reversing Valve Coil Reversing Valve Coil Upper ...

Страница 84: ... that LED201 Red is OFF when turning the power plate 3 Disconnect the CN5A connector on the PCB1 of the electrical box 4 Pull out the coil for expansion valve on the liquid tank upwards 2 1 8 Removing Coil for Expansion Valve TURN OFF all power source switches Phillips Screwdriver Spanner Tool Do not touch the electrical parts when LED201 Red on the ISPM is lit to prevent from an electrical shock ...

Страница 85: ...y unhooking the extrusion parts 2 1 9 Removing Printed Circuit Board PCB1 TURN OFF all power source switches Phillips Screwdriver Long Nose Pliers Tool Do not touch the electrical components When handling the PCB1 take care of not to use excessive force as this will cause damage Terminal Board Transformer Partition Plate Power Plate PCB1 for Control Holder Holder Holder PCB1 for Control ...

Страница 86: ...Spanner Tool Do not touch the electrical parts when LED201 Red on the ISPM is lit to prevent from an electrical shock NOTES 1 Identify terminal Nos with the mark band Nos when reassembling If incorrectly connected malfunction or damage to the electrical parts will occur 2 When changing the PCB ensure to set all the dip switches to the same configuration as the original RAS 3HVRG and 4HVRG RAS 5HVR...

Страница 87: ...the ACT module NOTES 1 Do not remove the insulation part from the screw after removing the screws 2 Do not lose the insulation sheet between ACT module and fin TURN OFF all power source switches NOTES 1 Identify terminal Nos with the mark band Nos when reassembling If incorrectly connected malfunction or damage to the electrical parts will occur 2 In the case of mounting ACT module check the insul...

Страница 88: ...ire connecting to the noise filter Remove the noise filter by holding the expanded part of the holders 6 pcs with long nose pliers NOTE When reassembling identify terminal Nos with the mark band Nos 2 1 11 Removing Electrical Components TURN OFF all power source switches Phillips Screwdriver Long Nose Pliers Tool Do not touch the electrical parts when LED201 Red is on the ISPM is lit to prevent fr...

Страница 89: ......

Страница 90: ...Decrease The unit is stopped when the ISPM temperature is higher than 100o C Earth Detection The unit is stopped when the compressor is earthing Some of the output terminals between U and V V and W W and U has a short circuit Overload control as a current greater than Rated Current X105 Overload control release at a current smaller than Rated Current X 88 Excessive Low Voltage at a voltage is lowe...

Страница 91: ... Fin mm 2 ISPM HS17A1F06 3HP and 4HP HF30A1F06 5HP 3 ACT Module LACT33020B RAS 3HVRG and RAS 4HVRG Capacitor Power Plate Fuse LED201 Red Reactor Noise Filter Magnetic Contactor 1 2 3 RAS 5HVRG 1 2 Reactor Power Plate Noise Filter Fuse Capacitor Magnetic Contactor LED201 Red ...

Страница 92: ...ons Rated Current of AC Chopper 2 1A 5 6A Applicable Power Source Output Voltage Output Current Maximum 2 1A 5 6A Control Method Chopping Frequency Input Duty Signal Accuracy of Output Voltage Output Characteristics Soft Start Overcurrent Protection Method Overcurrent Setting Minimum 2 1A 5 6A Overcurrent Protection Area Single Phase 220 240V 10 50 60Hz Single Phase 220 240V 10 AC Chopper Control ...

Страница 93: ...Models AC220 240V From Control PCB Input Duty Signal From Control PCB R S 1 3 PCN201 PCN202 PCN203 PCN204 5 1 3 CN201 1 3 5 1 3 5 1 3 C MFE AC220 240V From Control PCB Input Duty Signal From Control PCB R S R1 SUB1 MAIN1 1 3 CN201 C MFE NORMAL COM2 COM1 S1 E1 98 110 45 CAUTION CN201 PCN201 PCN203 PCN202 PCN204 R1 CN201 S1 COM1 COM2 SUB1MAIN1 CAUTION 180 69 124 ...

Страница 94: ...e motor 1 are installed to the unit and rotated simultaneously 2 Louver 4 Stopper AS 1 Motor 3 Bearing AS 3 Bearing AS 4 Motor 0 zero Reset 1 Motor 2 Louver Steel Plate Stopper Press the AUTO LOUVER of the remote control switch during auto louver operation The AS stopper of the louver 2 touches the steel plate stopper and the louver is reset to the 0 position The power supply for the motor 1 is tu...

Страница 95: ...Louver Stoppage Press the AUTO LOUVER of the remote control switch during auto louver operation The crank 2 touches the stopper of the fixing plate of motor 7 and the louver is reset to the 0 position The power supply for the motor 1 is turned OFF when the louver is at the setting position The louver 6 is stopped at the setting position Bearing Louver Arm Shaft B Arm Stopper Arm Shaft A Crank Bear...

Страница 96: ...d at the rack 3 and the circular reciprocating force gives the driving force to the louver 4 and rotates the louver 2 Auto Louver Stoppage 1 AS Motor 2 Pinion 3 Rack 4 Bearing 5 Cover 6 Louver 1 AS Motor 2 Pinion 3 Rack 6 Louver Stopper 5 Cover Press the AUTO LOUVER of the remote control switch during auto louver operation The rack 3 touches the stopper of the cover 6 and the louver is reset to th...

Страница 97: ...ter frame of the fixed scroll 2 The gas inside of the compression space is compressed toward the center of the scroll 3 The compression space is minimum at the center of the scroll and the gas compressed at the maximum is discharged from the outlet port of at the center of the scroll 4 The above procedures Suction Compression Discharge is repeated continuously Fixed Scroll Rotating Scroll Compress...

Страница 98: ... room temperature is controlled by the thermistor for indoor suction air temperature detecting the temperature at the suction air inlet of the indoor unit The setting temperature is indicated on the L C D of the remote control switch by number Adjust the setting temperature for prevention from excessive cooling and heating It is recommended to set the temperature as follows Economical Cooling Oper...

Страница 99: ...rature of compressor increases during heating operation the unit is controlled according to the following method An electronic expansion valve of indoor units and high pressure refrigerant is returned to the compressor through the accumulator decreasing compressor temperature If the compressor upper part temperature increases exceeding 132o C even if an electronic expansion valve opens the compres...

Страница 100: ...haracteristics for the thermistor is the same with the value of outdoor ambient temperature thermistor as shown in the figure below 0 10 20 30 40 50 60 70 80 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 82 61 46 35 27 20 5 16 12 5 10 8 5 3 3 6 2 5 90 Ambient Temperature o C Thermistor Resistance KΩ Thermistor Characteristics Operation Upper Part Temperature of Compressor Cooling Over 127o C 10 min...

Страница 101: ...r R407C Working Temperature Range 30o C to 65o C 30o C to 60o C Operating Time of Coil less than 50 Mounting Direction Drive Shaft in Vertical Direction within an Angle of 45o as Maximum Flow Direction Reversible Drive Method 4 Phase Pulse Motor Method Rated Voltage DC12V 1 8V Drive Condition 83PPS Pulse Width at ON 36mm sec OFF 60mm sec 1 2 Phase Excitation Coil Resistance each Phase 46Ω 10 at 20...

Страница 102: ...vation Procedure Phase 2φ 4φ 3φ 1φ 1 2 3 4 1 Specifications Items Specifications Type EDM Type Refrigerant Used R22 or R407C Working Temperature Range 30o C to 70o C With Coils Not Electrified Mounting Direction Drive Shaft in Vertical Direction Motor Upside and 90o in Four Direction Flow Direction Reversible Rated Electricity Drive Method 4 Phase Pulse Motor Method Rated Voltage DC12V 1 2V Drive ...

Страница 103: ...hen the discharge pressure reaches 2 75MPa during heating operation gas by pass control or fan control are performed Electrical Box Upper Cover Liquid Tank High Pressure Switch High Pressure Switch Pressure Switch for Control Pressure Switch for Control Discharge Pipe Brazing Part Brazing Part RAS 3HVRG and 4HVRG Electrical Box Upper Cover Liquid Tank High Pressure Switch Pressure Switch for Contr...

Страница 104: ...tialize the memory by following procedure 1 Depress Λ V High and Medium simultaneously 2 7 segment and LED will be lit 3 Depress all the touch type switches one by one 4 7 segment indicates Ou 5 Transmission check will be performed 6 After 3 seconds 7 segment indicates 77 for Main Unit or 88 for Sub Unit or EE Abnormal 7 After 3 seconds voltage check will be performed 8 After 3 seconds 7 segment i...

Страница 105: ...ystem didn t operate Cause Combination of the indoor unit and outdoor unit was wrong Countermeasure Check an applicable unit model code as shown below 4 2 Alarm 36 Outdoor Unit DC Inverter UTOPIA DC Inverter UTOPIA Indoor Unit SET FREE RAS HVRG Applicable Not Applicable FSG2E HRG SET FREE FSG 1 and FXG 1 RAS FSG 1 RAS FXG 1 ...

Страница 106: ...for above Example 3 Vertical Common Pipe VP30 for above Example Drain Piping Drain Piping Connection 1 25 to 1 100 Down Slope Common Drain Piping This drain pipe shall be separating from other pipes Incorrect Upward Slope Unit Rising Part Incorrect Correct Inner Diameter mm Slope 1 100 VP20 20 27 VP25 25 50 VP30 31 88 VP40 40 175 VP50 51 334 VP20 VP25 VP30 VP40 VP50 VP65 VP75 Table A Permissible D...

Страница 107: ...ase balance Inspect for faulty contact caused by loosened terminal connections oxidized contacts foreign matter and other items Inspect for electrical insulation resistance f Control and Protective Devices Setting Do not readjust the setting in the field unless the setting is maintained at a point other than the point listed in 9 SAFETY AND CONTROL DEVICE SETTING of TCII 2 For Indoor Unit a Air Fi...

Страница 108: ... oP AC Inverter Frequency H1 Required Frequency H2 Outdoor Fan Step Fo Outdoor Unit Expansion Valve Opening Eo Discharge Gas Temperature Td Heat Exchanger Liquid Pipe Temperature TE Outdoor Temperature To Inverter Stoppage Cause Code iT Inverter Fin Temperature TF Control Information A1 Compressor Running Current Indoor Unit Unit No Expansion Valve Opening EO Heat Exchanger Liquid Temp LO Intake A...

Страница 109: ...p bA 98 C Micro Computer State Indication I U Micro Computer C1 O U Micro Computer C2 D Stopping Cause State Indication Stopping Cause State Indication d1 E Alarm Occurrence Times of Abnormality E1 Times of Power Failure E2 Times of Abnormal Transmitting E3 Times of Inverter Tripping E4 F Automatic Louver State Louver Sensor State F1 H Pressure Frequency State Indication Discharge Pressure H1 99 S...

Страница 110: ...heat exchanger ditto GOOD or NOT GOOD 16 Check for leakage at 4 way valve ditto GOOD or NOT GOOD 17 Check for leakage at check valve ditto GOOD or NOT GOOD 18 Check for leakage at liquid tank ditto GOOD or NOT GOOD 19 Check for leakage at strainer ditto GOOD or NOT GOOD 20 Check for leakage at electronic Ex Valve ditto GOOD or NOT GOOD 21 Check for leakage at piping ditto GOOD or NOT GOOD 22 Check...

Страница 111: ......

Страница 112: ...Specifications in this catalog are subject to change without notice in order that HITACHI may bring the latest innovations to their customers Catalog No P5413554 2003 Printed in Japan N ...

Страница 113: ... 0 9 9 0 8 0 0 1 2 3 42 4 5 6 7 8 9 0 8 0 0 1 2 3 42 4 7 6 5 7 8 9 0 8 0 0 1 2 3 4 24 9 7 6 5 7 8 9 0 5 5 0 8 0 0 1 2 3 4 5 4 5 8 9 0 0 8 0 0 1 2 3 4 5 4 9 7 6 5 7 8 9 0 0 8 0 0 1 2 3 4 4 5 6 9 7 8 9 0 8 0 0 1 2 3 4 8 5 4 5 9 5 8 9 0 A 0 8 0 0 1 2 3 46 4 BC4 A 7 0 8 0 0 1 2 3 46 4 5 BC4 ...

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Страница 115: ...h2iU hO L Q M W R2L O K _ L M iN I O R h2iT hO L Q M W R2L O K _ L M iN I O R h2i hO L Q M W R2L O K _ L M iN I O R 4 8 5 Q R N N OXQ L M 9j W M M L Q h8 h_ WcL R M d N R _ I M L N Q 3iU 3W O bL Q I iN I O RU 3iT 3W O bL Q I iN I O RU 3S 3O I Q P N O bW O 3k U 5 Q W M 6L O3d W O bL M N O 3k T l_ M W M 6L O3d W O bL M N O 3k 1 L m _ L RhL J W3d W O bL M N O 3k Z I hL J W3d W O bL M N O nkT 4W I YN ...

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