Mitsubishi Electric PUZ-M100VKA Service Manual Download Page 19 | Manualshive

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19

OCH707C

PUZ-M100YKA(-ET).TH
PUZ-M125YKA(-ET).TH
PUZ-M140YKA(-ET).TH

Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
High Pressure Switch
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve

21S4
ACL4
DCL
RS
CY1, CY2
P.B.
N.F.
C.B.

Solenoid Valve (4-Way Valve)
Reactor
Reactor
Resistor
Capacitor
Power Circuit Board
Noise Filter Circuit Board
Controller Circuit Board
Fuse <T6.3AL250V>
Switch <Manual Defrost, Defect History
Record Reset, Refrigerant Address>
Switch <Function Switch>

SW5
SW6
SW7
SW8
SW9
SWP
CN31
CN51
CNDM
CNM
X52

F1, F2, F3, F4
SW1

SW4

Switch <Function Switch>
Switch <Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Emergency Operation>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Relay

SYMBOL

TB1
TB2
MC
MF1
63H
TH3
TH4
TH6
TH7
TH8
TH33
LEV-A, LEV-B

SYMBOL

SYMBOL

NAME

NAME

NAME

1 2 3 4 5 6 7 8

OFF

ON

1 2 3 4 5 6 7 8

OFF

ON

SW6-4, 5, 6, 7, 8 *2

MODEL

100Y

1 2 3 4 5 6 7 8

OFF

ON

125Y

140Y

The black square (■) indicates a

switch position.

*1. MODEL SELECT

*2. SW6-1 to 3: Function switch

P.B.

U

POWER
SUPPLY
3N~

400V 50Hz

TB1

V W

RD

WH

BK

MC

7

L 1

L 2

L 3

N

N.F.

CNAC1

(WH)

1

3

CNDC

(PK)

1

3

CNL

(BU)

1

3

CNAC2

(RD)

1

3

CNCT

(RD) 1 2

LO1

LO2

LO3

EI

NI

LI1

LI2

LI3

E3

S1

S2

S3

2

RD

WH

BK

BU

RD

WH

BK

TB2

RD

WH

BK

YE

OG

BN

RD

GNYE

21S4

(GN)

3

1

21S4

X52

BK

E2

BK

BK

TO INDOOR

UNIT

1 2

CN6

(WH)

1 2

CN5

(RD)

CN2

(RD)

1

7 1 2

CN4

(WH)

TB-U

TB-V

TB-W

L3IN

TB-L2

TB-L1

TH8

t°

RD

MS

3~

2

2

CY1

CY2

C. B.

TH6

TH7

TH4

t° t°

t°

CNS

(WH)

CNAC

(WH)

CNDC

(PK)

F2

F1

F3

F4

CN2

(RD)

CN4

(WH)

TH7/6

(RD)

TH4

(WH)

TRANS

CNVMNT

(WH)

CNMNT

(WH)

63H

(YE)

2

7

1

4

2 1

TH3

t°

TH3

(WH)

1 2

RD

RD

1

3

3

1

1

5

1 2

1

7

1

3

1

3

1

2

3

4

MS

3~

MF1

CNF1

(WH)

1

7

63H

LEV-B

(RD)

LEV-B

5

1

M

LEV-A

(WH)

LEV-A

5

1

M

2

CNDM

(WH)

CN51

(WH)

3

1

5

1

1 3

TH33

(YE)

TH33

t°

When M-NET adapter is connected

CN2M

(WH)

CN5 (WH)

CND

(WH)

M-NET

M-NET ADAPTER

TB7

A B S

5

1

5

1

2

1

3

3

3

5

CNM

(WH)

1

14

LED1

LED2

TB-L3

X52CB

L3OUT

DCL

RS

X52CA

TB-P1

TB-P3

BK

ACL4

2

*

1

SW5

SW8

SWP

SW4

SW1

SW6

SW9

SW7

CN31

Never splice the power cable or the indoor-outdoor connection cable,
otherwise it may result in a smoke, a fire or communication failure.

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Summary of Contents for PUZ-M100VKA

Page 1: ...Z M125YKA TH PUZ M125YKA ET TH PUZ M140YKA TH PUZ M140YKA ET TH PARTS CATALOG OCB707 CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 2 3 SPECIFICATIONS 12 4 DATA 13 5 OUTLINES AND DIMENSIONS 16 6 WIRING DIAGRAM 17 7 WIRING SPECIFICATIONS 20 8 REFRIGERANT SYSTEM DIAGRAM 25 9 TROUBLESHOOTING 27 10 FUNCTION SETTING 83 11 MONITORING THE OPERATION DATABY THE REMOTE CONTROLLER 89 12 EASY MAINTENANCE F...

Page 2: ... information is available in the OPERATION MANUAL INSTALLATION MANUAL and the like Precautions during the repair service Do not perform the work involving the electric parts with wet hands Do not pour water into the electric parts Do not touch the refrigerant Do not touch the hot or cold areas in the refrigerating cycle When the repair or the inspection of the circuit needs to be done without turn...

Page 3: ...manifold Flare tool Charge hose Size adjustment gauge Gas leak detector Vacuum pump adaptor Torque wrench Electronic refrigerant charging scale Make sure that the inside and outside of refrigerant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness Contamination inside refri...

Page 4: ...efrigerant leaks and accumulates it may ignite or poisonous gases may be released 11 Do not install the unit in places where refrigerant may build up or places with poor ventilation such as a semi base ment or a sunken place in outdoor Refrigerant is heavier than air and inclined to fall away from the leak source 12 Do not use means to accelerate the defrosting process or to clean other than those...

Page 5: ...he Refrigeration Equipment Where electrical components are being changed they shall be fit for the purpose and to the correct specification At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assistance The following checks shall be applied to installations using flammable refrigerants The charge size ...

Page 6: ... procedures shall be used However for flammable refrigerants it is important that best practice is followed since flammability is a considera tion The following procedure shall be adhered to remove refrigerant purge the circuit with inert gas evacuate purge again with inert gas open the circuit by cutting or brazing The refrigerant charge shall be recovered into the correct recovery cylinders For ...

Page 7: ...to cylinders ensure that only appropriate refrig erant recovery cylinders are employed Ensure that the correct number of cylinders for holding the total system charge are available All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant i e special cylinders for the recovery of refrigerant Cylinders shall be complete with pressure relief valve and as...

Page 8: ... damaged 8 OCH707C 2 3 PRECAUTIONS WHEN REUSING EXISTING R22 R410A REFRIGERANT PIPES 1 Flowchart 5 Service tools Use the below service tools as exclusive tools for R32 refrigerant No Tool name Specifications 1 Gauge manifold Only for R32 Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R32 Use pressure performance of 5 09MPa G...

Page 9: ...lusive for R32 Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R32 Refrigerant cylinder Refrigerant charge Tool exclusive for R32 Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R32 Charge valve Prevent gas from blowing out when detaching charge...

Page 10: ...four sides is open and in a sufficiently large space with out depressions 2 5 Minimum installation area If you unavoidably install a unit in a space where all four sides are blocked or there are depressions confirm that one of these situations A B or C is satisfied Note These countermeasures are for keeping safety not for specification guarantee A Secure sufficient installation space minimum insta...

Page 11: ...efer to the spec nameplate or installation manual For the amount to be added locally refer to the installation manual Install the indoor unit so that the height from the floor to the bottom of the indoor unit is h0 for wall mounted 1 8 m or more for ceiling suspended cassette and ceiling concealed 2 2 m or more There are restrictions in installation height for each model so read the installation m...

Page 12: ...rotection devices Shell thermistor H P switch Heat exchanger Plate fin coil Fan Fan drive x No Propeller fan x 1 Fan motor output kW 0 200 Air volume K min 79 86 86 79 86 86 Noise level Cooling SPL dB 51 54 55 51 54 55 Heating SPL dB 54 56 57 54 56 57 Cooling PWL dB 70 72 73 70 72 73 Dimensions W mm inch 1 050 41 5 16 D mm inch 330 40 13 1 3 16 H mm inch 981 38 5 8 Weight kg 76 84 84 78 85 85 Refr...

Page 13: ...T TH 2 6 2 8 3 0 3 2 3 4 3 6 4 0 4 4 4 6 4 8 5 0 3 6 PUZ M140VKA ET TH PUZ M100YKA ET TH 2 0 2 2 2 4 2 6 2 8 3 1 3 5 3 9 4 1 3 1 PUZ M125YKA ET TH 2 6 2 8 3 0 3 2 3 4 3 6 4 0 4 4 4 6 4 8 5 0 3 6 PUZ M140YKA ET TH 4 2 COMPRESSOR TECHNICAL DATA Winding temperature at 20 C Service Ref PUZ M100VKA ET TH PUZ M100YKA ET TH PUZ M125 140VKA ET TH PUZ M125 140YKA ET TH Compressor model SVB220FBGMT SVB220FB...

Page 14: ...0 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR COOLING HEATING MODE 55 57 SPL dB LINE APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCT...

Page 15: ...50 1 50 3 50 1 50 3 50 Voltage V 230 400 230 400 230 400 Current A 11 7 4 2 13 0 4 7 17 4 6 3 15 6 5 6 21 5 7 8 19 0 6 9 Refrigerant circuit Discharge Pressure MPa 2 93 2 70 3 12 2 62 3 28 2 79 Suction pressure MPa 0 96 0 70 0 89 0 69 0 84 0 66 Discharge temperature C 90 2 88 7 89 4 81 7 91 88 7 Condensing temperature C 38 0 44 7 39 8 43 5 40 3 45 9 Suction temperature C 14 1 1 3 7 9 0 0 5 6 0 9 R...

Page 16: ...16 OCH707C 5 OUTLINES AND DIMENSIONS Unit mm PUZ M100VKA ET TH PUZ M100YKA ET TH PUZ M125VKA ET TH PUZ M125YKA ET TH PUZ M140VKA ET TH PUZ M140YKA ET TH ...

Page 17: ...nnector Connection for Option Relay SYMBOL TB1 MC MF1 63H TH3 TH4 TH6 TH7 TH8 TH33 SYMBOL SYMBOL NAME NAME NAME 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 100V The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B MS 3 MC CN6 WH t 2 1 2 CN4 WH 1 2 TH8 W V U BK WH RD W V U IC600 CNDC PK 1 3 2 CNAC2 RD CNAC1 WH LI NI 1 3 1 3 IC500 DS E3 E4 EI E2 BK BK BK BK C...

Page 18: ...B SYMBOL SYMBOL NAME NAME NAME 1 2 3 4 5 6 7 8 OFF ON 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 125V 140V The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B MS 3 MC CN6 WH t 2 1 2 CN4 WH 1 2 TH8 W V U BK WH RD W V U IC600 CNDC PK 1 3 2 CNAC2 RD CNAC1 WH LI NI 1 3 1 3 IC500 DS E3 E4 EI E2 BK BK BK BK CN2 RD 7 7 1 TB3B TB1B TB2B TB1A TB2A TB3A BK WH RD RD...

Page 19: ... 1 2 3 4 5 6 7 8 OFF ON 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 100Y 1 2 3 4 5 6 7 8 OFF ON 125Y 140Y The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B U POWER SUPPLY 3N 400V 50Hz TB1 V W RD WH BK MC 7 L1 L2 L3 N N F CNAC1 WH 1 3 CNDC PK 1 3 CNL BU 1 3 CNAC2 RD 1 3 CNCT RD 1 2 LO1 LO2 LO3 EI NI LI1 LI2 LI3 E3 S1 S2 S3 2 RD WH BK BU RD WH BK TB2 RD WH...

Page 20: ...V 3N 3 ph 4 wires 50 Hz 400 V Outdoor unit input capacity Main switch Breaker 1 32 A 40 A 16 A Wiring Wire No size mm 2 Outdoor unit power supply 3 Min 6 3 Min 6 5 Min 1 5 Indoor unit Outdoor unit 2 3 1 5 Polar 3 1 5 Polar 3 1 5 Polar Indoor unit Outdoor unit earth 2 1 Min 1 5 1 Min 1 5 1 Min 1 5 Remote controller Indoor unit 3 2 0 3 Non polar 2 0 3 Non polar 2 0 3 Non polar Circuit rating Outdoor...

Page 21: ... CND CN01 ORANGE CN01 ORANGE S1 S2 S3 L N YELLOW BLUE BLUE YELLOW CND Indoor unit control board Note There are 3 types of labels labels A B and C Affix the appropriate labels to the units according to the wiring method ON OFF Set the SW8 3 to ON 1 2 SW8 3 C B Simultaneous twin triple system Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units ...

Page 22: ...unit Outdoor unit earth Wire No o Size mm Be sure to connect the indoor outdoor connecting cables directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point Indoor unit Outdoor unit Indoor Outdoor separate power s...

Page 23: ...rthing spots on the shield wire noise may enter into the shield wire because the earth wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots In case of single spot earthing noise does not enter into the shield wire because the earth wire and shield wire do not form 1 circuit To avoid communication errors caused by nois...

Page 24: ...ll refrigerant addresses are 00 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 2 50 M NET Address No Setting example Switch setting SW11 1st digit SW12 2nd digit OFF ON 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 ...

Page 25: ...rge Thermistor TH33 Comp surface Compressor Strainer 50 Strainer 100 Strainer 100 4 way valve Muffler Charge plug Charge plug Stop valve Refrigerant GAS pipe connection 15 88 5 8 Refrigerant flow in cooling Refrigerant flow in heating Heat exchanger Thermistor TH6 Condenser Thermistor TH7 Ambient Thermistor TH3 Liquid Distributor LEV B PUZ M100VKA ET TH PUZ M100YKA ET TH PUZ M125VKA ET TH PUZ M125...

Page 26: ...type on the control board of the outdoor unit The compressor and ventila tors indoor and outdoor units start operating refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit Only push the pump down SWP switch if the unit is stopped However even if the unit is stopped and the pump down SWP switch is pushed less than 3 minutes after the compressor stop...

Page 27: ...g settings or auto recovery feature from power failure make proper changes of settings referring to the description of 10 FUNCTION SETTING Make sure to read operation manual before test run Especially items to secure safety Unit conditions at service Check code Actions to be taken for service summary The trouble is reoccurring Displayed Judge the problem and take a corrective action according to 9...

Page 28: ...F3 F4 Remain Vane Check the auto vane with the F1 F2 buttons Press the button to return to Test run operation Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after two hours Test run operation Auto vane check Press the button and open the Vane setting screen Function buttons F1 F2 F3 F4 MENU RETURN SELECT ON OFF 9 2 2 Test r...

Page 29: ...ccurs the following screen will appear Check the error status stop the operation and consult your dealer Contact information dealer s phone number will appear if the information have been registered F1 F2 F3 F4 F1 F2 F3 F4 1 Error information Error reset Error reset Error code Error unit IU Ref address Unt Model name Serial No Reset Page Reset current error Error reset OK Cancel Main menu Reset er...

Page 30: ...nu Error Unt dd mm yy Error history Cancel OK Delete error history Error history Check menu Error history deleted 2 Select Error history with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button 3 Select Error history from the Check menu and press the button to view up to 16 error history records Four records are shown per page and the top record on t...

Page 31: ...splayed green once and red twice blink alternately F3 F5 F9 After startup is displayed green twice and red once blink alternately EA Eb After startup is displayed only green lights up 00 After startup is displayed only green lights up 00 indicates digital display 2 Press TEST button twice 1 Turn on the main power supply 3 Press OPERATION SWITCH button 4 Press AIR DIRECTION button 5 Check the outdo...

Page 32: ...y Start this operation from the status of remote controller display turned off A and current operation mode are displayed 3 Press the button to activate mode then check whether cool air blows out from the unit 4 Press the button to activate mode then check whether warm air blows out from the unit 5 Press the button and check whether strong air blows out from the unit 6 Press the button and check w...

Page 33: ... Self check with the F1 or F2 button and press the button 1 Select Service from the Main menu and press the button 3 Check code unit number attribute will appear will appear if no error history is available 4 Resetting the error history Press the F4 button Reset on the screen that shows the check code history A confirmation screen will appear asking if you want to delete the check code history Pre...

Page 34: ...ppear on the remote controller display if the correct voltage 8 5 12 VDC is not supplied to the remote con troller If this is the case check the remote controller wiring and indoor units OK No problems are found with the remote controller Check other parts for problems E3 6832 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission l...

Page 35: ...f Check the error history for each unit using the remote controller 1 Switch to self diagnosis mode Press the CHECK button H in the picture above twice within 3 seconds The display content will change as shown below 2 Set the unit number or refrigerant address you want to diagnose Press the TEMP buttons and F in the picture above to select the desired number or address The number address changes b...

Page 36: ...ay content will change as shown below Press the FILTER button A in the picture in the previous page 3 Remote controller self diagnosis result When the remote controller is functioning correctly Check for other possible causes as there is no problem with the remote controller When the remote controller malfunctions Error display 1 NG blinks The remote controller s transmitting receiv ing circuit is...

Page 37: ...refrigerant address 00 blinks Check that the remote controller s display has stopped before continuing 2 Press the TEMP buttons Select the refrigerant address of the indoor unit for the self diagnosis Note Set refrigerant address using the outdoor unit s DIP switch SW1 For more information see the outdoor unit installation manual 3 Point the remote controller at the sensor on the indoor unit and p...

Page 38: ...8 P8 Pipe temperature error 9 E4 E5 Remote controller signal receiving error 10 11 Pb Indoor unit fan motor error 12 Fb FB Indoor unit control system error memory error etc 14 PL Abnormality of refrigerant circuit E0 E3 Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote co...

Page 39: ...pply terminal block TB1 2 Check following items a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board 3 Check connection of the connector CNDC on the outdoor controller circuit board Refer to 9 9 TEST POINT DIAGRAM 4 Check connection of reactor DCL or ACL Refer to 6 WIRING DIAGRAM 5 a Check connection of outdoor power circuit board PUZ M VKA outdoo...

Page 40: ...Abnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes 2 Abnormal if outdoor controller circuit board recognizes excessive number of indoor units 1 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units 2 Check diameter and length of indoor...

Page 41: ...ring defrosting and discharge thermistor TH4 exceeds 110 C 2 Abnormal if discharge superheat TH4 TH5 increases All the conditions are detected simul taneously for 10 minutes continuously after 6 minutes past from compressor startup including the thermostat indica tion or recovery from defrosting During compressor operation in Cooling only When discharge superheat is less than 80 C in Cooling When ...

Page 42: ...d TH3 TH6 TH7 Outdoor power circuit board CN6 2 Defective thermistor 3 Defective outdoor controller circuit board U6 4250 Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition 1 Outdoor stop valve is closed 2 Decrease of power supply voltage 3 Looseness disconnection or reverse of compressor wiring connection 4 Defective compressor 5 Defect...

Page 43: ...KA 7 Replace outdoor controller circuit board PUZ M VKA 04 Input current sensor error L1 phase open error Decrease in input current through outdoor unit to 0 1 A only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A 1 L1 phase open PUZ M YKA 2 Disconnection or loose connection between TB1 and outdoor noise filter circuit board PUZ M YKA 3 Dis...

Page 44: ...g a Increase in DC bus voltage to 460 V b Decrease in PFC control voltage to 12 V DC or lower c Increase in input current PUZ M VKA only 1 Abnormal increase in power source voltage 2 Decrease in power source voltage instantaneous stop 3 Disconnection of compressor wiring 4 Misconnection of reactor DCL 5 Defective outdoor power circuit board 6 Defective Reactor DCL 7 Disconnection or loose connecti...

Page 45: ...rd cannot receive normally any data from remote controller board or from other indoor controller board for 3 minutes Check code E4 2 Indoor controller board cannot receive any signal from remote controller for 2 minutes Check code E4 1 Check disconnection or looseness of indoor unit or transmission wire of remote controller 2 Set one of the remote controllers main if there is no problem with the a...

Page 46: ...efective transmitting receiving circuit of indoor controller board 6 Noise has entered into transmission wire of remote controller E6 6840 Indoor outdoor unit communication error Signal receiving error 1 Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on 2 Abnormal if indoor controller board could not receive any signal normally for 3...

Page 47: ...ondenser evaporator thermistor Defective refrigerant circuit 2 Reverse connection of extension pipe on plural units connection 3 Reverse wiring of indoor outdoor unit connecting wire on plural units connection 4 Defective detection of indoor room temperature and pipe condenser evaporator temperature thermistor 5 Stop valve is not opened completely Pipe temperature Detected as abnormal when the pip...

Page 48: ...n are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect transmission of control and central control system of outdoor unit then abnormality is detected 1 Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote controller is not connected to terminal block for central control TB7 of outdoor unit 2 Che...

Page 49: ...nerated address 3 Check disconnection or looseness of abnormality generated or abnormality detected transmission wire terminal block and connector 4 Check if tolerance range of transmission wire is not exceeded 5 Check if type of transmission wire is correct or not If the cause of trouble is not any of 1 5 above repair the defect then turn off the power supply of outdoor unit indoor unit and FRESH...

Page 50: ...r supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected 3 Contact failure of transmis sion wire of indoor unit of LOSSNAY 4 Disconnection of transmission connector CN2M of indoor unit 5 Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is non existent 1 The unit of former address d...

Page 51: ...on indoor controller board 1 When LED3 is not blinking Check indoor outdoor connecting wire for Miswiring Reverse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is normal 4 Check LED display on outdoor controller circuit board Refer to 9 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Check protection device connector 63H for contact failure Refer t...

Page 52: ...on for 2 minutes at most after the power supply ON 2 Local remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Local remote controller operation is prohibited by centralized controller etc since it is connected to MELANS 3 Phenomena of No 2 1 Normal operation 2 Normal operation 3 Check the phenomena No 2 6 Remote controller displ...

Page 53: ...iagnosis after turning on the main power Normal The startup diagnosis will be over in around 2 minutes Miswiring of indoor outdoor connecting wire Breaking of indoor outdoor connecting wire S3 Defective indoor controller board Defective outdoor controller circuit board Refer to Self diagnosis action table in order to solve the trouble In case of communication errors the display of remote controlle...

Page 54: ...rcuit board have melted Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses have melted The fuses on the outdoor controller circuit board will have been melted when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board have melted Check if miswiring breaking or poor contact is ca...

Page 55: ...door controller circuit board Replace the outdoor controller circuit board Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Defective indoor power board Replace the indoor power board Defective outdoor power circuit board Replace the outdoor...

Page 56: ...al block TB5 of the indoor unit Defective remote controller Replace the remote controller Breaking or poor contact of the remote controller wire Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10 V and 16 V DC the indoor controller board must be defective The remote co...

Page 57: ...ne Calls From Customers How to Respond Note 1 Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied 2 Unit cannot be restarted for a while after it s stopped 2 Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microprocessor s directive Once the compressor is stopped the unit cannot be restarted for 3 m...

Page 58: ...nit sometimes 4 This is not a malfunction This is the sound when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition 5 A sound similar to water flowing is heard from the unit 5 This is not a malfunction This is the sound when the refrigerant is flowing inside the indoor unit The fan speed does not match the setting of the remote controller...

Page 59: ...y sweat and water drips down Note Make use of optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once Water or moisture is expelled from the outdoor unit Batteries are being exhausted Replace them and press the reset button of remote controller The display of wireless remote controller gets dim or does not come on The indoor unit does not receive a s...

Page 60: ...isconnect the connector then measure the resistance with a tester Winding temperature 20 C Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Ω Open or short Refer to the next page Fan motor MF1 MF2 Measure the resistance between the terminals with a tester Winding temperature 20 C Normal W V U 39 kΩ 105kΩ 4 3 kΩ 9 6 kΩ Open or short TH3 TH6 TH7 TH8 Measure the resistance between the...

Page 61: ...aker to start test run TEST POINT 1 VDC between 1 and 4 of the fan connector VDC 250 380 V DC TEST POINT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC Correct the wiring Replace outdoor controller board Replace outdoor controller board C B and fan motor MF1 Replace outdoor controller board Is the voltage normal Is there contact failure Yes No Did the fuse blow No Yes Check the operation o...

Page 62: ...7 k 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465 k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heatsink TH8 20 C 250 k 30 C 160 k 40 C 104 k 50 C 70 k 60 C 48 k 70 C 34 k 80 C 24 k 90 C 17 5 k 100 C 13 0 k 110 C 9 8 k High temperature thermistor Thermistor Discharge TH4 Thermistor Comp surface TH33 0 10 20 30 40 50 20 10 0 10...

Page 63: ... valve is locked more sound can be heard No sound is heard when the pulse number moves from B to A in case coil is burnt out or motor is locked by open phase Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve LEV M 1 6 ø4 ø4 ø3 ø2 ø1 1 GY OG RD YE BK 2 3 4 5 Connector LEV A LEV B 12 V DC Outdoor controller board Dri...

Page 64: ...herwise pipes can bend due to stress How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly at...

Page 65: ...t for how to set the indoor unit 3 During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible 4 Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the...

Page 66: ... of low level sound priority mode 1 to 3 Input of external contact point SW7 Demand control setting 63H High pressure switch SW4 Test operation SW6 Model select SW5 Function switch TH4 Thermistor Discharge TH7 6 Thermistor Ambient 2 phase pipe VFG Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF17 4 VSP Voltage between pins of C5A C5B 0 V DC when stopped 1 6 5 V DC when oper...

Page 67: ...ect to the outdoor controller circuit board CNAC CNDC Connect to the outdoor controller circuit board CNDC LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 400 V AC OUTPUT Connect to the outdoor power circuit board TB L1 L2 L3 CNCT Primary current Connect to the outdoor power circuit board CN5 CNL Connect to the ACL4 E3 Connect to the electrical parts box E2 Connect to the electrical parts box PUZ...

Page 68: ... S N2 P3 U V W N3 L3 P2 L1 L2 CNAC1 CNAC2 230 V AC Connect to the outdoor controller circuit board CNAC EI E2 E3 E4 Connect to the earth CN2 Connect to the outdoor controller circuit board CN2 1 5 Transmitting signal to outdoor controller circuit board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 16 V DC 6 5 16 V DC 7 5 16 V DC CN4 Connect to the outdoor controller circuit board CN4 NI LI Voltage o...

Page 69: ...rent Connect to the outdoor noise filter circuit board CNCT CN4 Connect to the outdoor controller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 1 5 Power circuit board Transmitting signal to the controller board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 Not used 6 5 16 V DC 7 5 16 V DC 5 1 2 6 7 Diode module DIP IPM TAB connector on X52CA Connect to the RS resistor TB...

Page 70: ...IP SW1 1 on the outdoor controller board from OFF to ON 2 Manual defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous manual defrost is finished Pipe temperature is less than or equal to 8 C Manual defrost will finish if certain conditions have been satisfied Manual de...

Page 71: ...function 2 Power failure automatic recovery 2 Auto recovery No auto recovery When power supply ON 3 4 5 6 No function SW7 4 1 Setting of demand control 3 SW7 1 SW7 2 Power consumption Demand switch ON OFF OFF 0 Operation stop ON OFF 50 OFF ON 75 2 3 Max Hz setting cooling Max Hz cooling o 0 8 Normal Always 4 Max Hz setting heating Max Hz heating o 0 8 Normal Always 5 No function 6 Defrost Hz setti...

Page 72: ...lay A SW1 OG 1 3 BN RD E B F CNDM X X C D A Circuit diagram example Demand function B On site arrangement X Y Relay C External input adapter PAC SC36NA E D Outdoor unit control board E Max 10 m F Power supply for relay By performing the following modification energy consumption can be reduced to 0 100 of the normal consumption The demand function will be activated when a commercially available tim...

Page 73: ...ignal receiving error is detected by remote controller Remote controller transmitting error is detected by remote controller Remote controller signal receiving error is detected by indoor unit Remote controller transmitting error is detected by indoor unit Serial communication error Communication between outdoor controller board and outdoor power board Communication between outdoor controller boar...

Page 74: ...H3 TH4 TH6 TH7 TH8 and TH33 on outdoor controller board and connector CN6 on outdoor power board are disconnected 2Measure resistance value of outdoor thermistors Abnormality of heatsink temperature 1Check if indoor outdoor units have a short cycle on their air ducts 2Measure resistance value of outdoor thermistor TH8 1Check the outdoor fan motor 2Check if connector TH3 on outdoor controller board...

Page 75: ...eiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4 units or more Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Startup time over Communication error except for outdoor unit Display Inspection unit 0 1 2 3 4 Outdoor unit Indoor unit 1 Indo...

Page 76: ...ours or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 s 0 5 s 2 s 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 to 50 0 to 50 Note Omit the figures after the decimal fractions A Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement ...

Page 77: ...nd ones digit are displayed by turns Example When 130 C 0 5 s 0 5 s 2 s C A Code display Code display 0 to 50 When no error history 0 and are displayed by turns When no error history 0 and are displayed by turns 1 ON 2 3 4 5 6 Thermostat ON time 0 to 999 Test run elapsed time 0 to 120 0 to 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Exampl...

Page 78: ...ture are displayed by turns C 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns C C C 8 to 39 Indoor pipe temperature Liquid TH2 2 Indoor 2 39 to 88 Indoor pipe temperature Cond Eva TH5 2 Indoor 2 39 to 88 1 ON 2 3 4 5 6 The number of connected indoor units Unit 0 to 4 The number o...

Page 79: ...e is 0 C or less and temperature are displayed by turns When the thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Outdoor ambient temperature TH7 39 to 88 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns Normal Overvoltage error Undervoltage error Input current sensor error L1 phase open error Abnormal power synchro...

Page 80: ...o postponement Code display Error history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns 6 Outdoor 2 phase pipe TH6 7 Outdoor ambient temperature TH7 8 Outdoor heatsink TH8 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Error thermistor display When there is no error thermistor is displayed Code display Operation frequenc...

Page 81: ...mperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor heatsink temperature TH8 on error occurring 40 to 200 40 to 200 When the temperature is 0 C or less and temperature are displayed by turns When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 15 15 15 ...

Page 82: ...ssor operating frequency 1 ON 2 3 4 5 6 Code display The following code will be a help to know the operating status of unit Display Compressor operating frequency control Display Compressor operating frequency control Primary current control Secondary current control 1 2 1 4 8 2 The tens digit The ones digit In this digit the total number of activated control is displayed Preventive control for ex...

Page 83: ... on all the indoor units Initial setting Initial setting Initial setting ta A B 2 ta A B 2 ta A ta A No 2 The data of the sensor on the indoor unit that connected with remote controller ta A ta B ta A ta A No 3 The data of the sensor on main remote controller ta C ta C ta C ta C OUTDOOR INDOOR REMOTE MAIN REMOTE SUB INDOOR OUTDOOR INDOOR REMOTE MAIN REMOTE SUB OUTDOOR INDOOR REMOTE MAIN OUTDOOR IN...

Page 84: ...ervice to make the maintenance setting Maintenance password is required Note The initial maintenance password is 9999 Change the default password as necessary to prevent unauthorized access Have the password available for those who need it If you forget your maintenance password you can initialize the password to the default password 9999 by pressing and holding the F1 and F2 buttons simultaneousl...

Page 85: ... change the setting number with the F3 or F4 button 1 Select Service from the Main menu and press the button Checking the indoor unit No When the button is pressed the target indoor unit will start fan operation If the unit is common or when running all units all indoor units for the selected refrigerant address will start fan operation F1 F2 F3 F4 Function setting Ref address Sending data Grp 5 W...

Page 86: ...tting Press E Specified indoor unit FAN operation Change refrigerant address or unit No 2 Switch to function setting mode Press A and B at the same time with the remote controller stopped First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection position is given For actual operations refer to steps 1 to...

Page 87: ...to the selected unit number In this case the refrigerant address and unit number may be incorrect so repeat steps 2 and 3 to set the correct ones When grouping different refrigerant systems if an indoor unit other than the one to which the refrigerant address has been set performs fan operation there may be another refrigerant address that is the same as the specified one In this case check the DI...

Page 88: ...ect the wireless remote controller toward the receiver of the indoor unit and press the button 3 Set the unit number Press the temp button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Notes 1 If a unit number that cannot be recognized by the unit is entered 3 beep...

Page 89: ...uired setting with the F3 or F4 button Ref address setting 0 15 Request code setting Press the button Data will be collected and displayed F1 F2 F3 F4 Request code Request Request Request code Ref address Request code Cursor Ref address Request code Cursor Request code 004 Discharge temperature 69 C Data display Relay output state C 4 Operation mode Operation state Request code 0 1 Select Service ...

Page 90: ...d refrigerant address Screen B 4 Press the CLOCK buttons and to set the desired request code No 5 Press the FILTER button to perform data request The requested data will be displayed at C in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatically even if the data cha...

Page 91: ...Unit No 1 Indoor unit Intake air temperature Unit No 2 Indoor unit Intake air temperature Unit No 3 Indoor unit Intake air temperature Unit No 4 Indoor unit Liquid pipe temperature Unit No 1 Indoor unit Liquid pipe temperature Unit No 2 Indoor unit Liquid pipe temperature Unit No 3 Indoor unit Liquid pipe temperature Unit No 4 Indoor unit Cond Eva pipe temperature Unit No 1 Indoor unit Cond Eva pi...

Page 92: ...t Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displ...

Page 93: ...history 2 second to last Error history 3 third to last Abnormal thermistor display TH6 TH7 TH8 Operation mode at time of error Compressor Operating current at time of error Compressor Accumulated operating time at time of error Compressor Number of operation times at time of error Discharge temperature at time of error Outdoor unit 2 phase pipe temperature TH6 at time of error Outdoor unit Ambient...

Page 94: ...ol For indoor fan pulsation control For indoor DC brushless motor control Indoor Fan operating time After filter is reset Indoor Total operating time Fan motor ON time Indoor fan output value Sj value Indoor fan output value Pulsation ON OFF Indoor fan output value duty value Indoor unit Capacity setting information Indoor unit SW3 information Wireless pair No indoor control board side setting Ind...

Page 95: ... state Operation mode Indoor unit Control state Request code 50 Data display Operation mode Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 RequestingcompressortoturnOFF F There are no corresponding units Outdoor unit Control state Request code 51 Da...

Page 96: ... 1 Error content 2 0 0 Error content 1 Detected Display Overvoltage Undervoltage L1 phase Power synchronizing error error open error signal error 0 1 2 3 4 5 6 7 8 9 A b C d E F Error content 2 Detected Display Converter Fo PAM error error 0 1 2 3 1 1 2 Note Refer to 9 4 SELF DIAGNOSIS ACTION TABLE for more information Actuator output state 1 Display SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8...

Page 97: ... unit Capacity setting display Request code 70 Outdoor unit Setting information Request code 71 Data display Setting information 1 Setting information 2 0 0 Setting content Display Setting value 0 1 50 2 75 0 3 100 Data display Capacity 25 28 125 140 20 100 Model M100 M125 M140 Setting information 1 Display Defrost mode 0 Standard 1 For high humidity Setting information 2 Display Single Heat pump ...

Page 98: ... Capacity setting state 00 10 42 01 11 02 12 48 03 13 04 14 05 15 06 16 07 17 08 18 09 19 0A 1A 0b 1b 0C 1C 0d 1d 0E 1E 0F 1F Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42disconnected Wireless pair No indoor control board side setting Request code 165 Data display 0 0 See the table on the right ...

Page 99: ... run time COMP On Off COMP frequency A Hz Hr times Hr Ref address Cool Ref address Cool Ref address Cool Sub cool OU TH4 temp OU TH6 temp OU TH7 temp IU air temp IU HEX temp IU filter time Select Smooth maintenance with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button Select Service from the Main menu and press the button Set each item Select the ...

Page 100: ...ata with the air conditioner stopped skip to step 4 Fixed Hz operation The operating frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Display A 3 Press the FILTER button to confirm the setting Display D Waiting for stabilization Stabilized After 10 to 2...

Page 101: ... exchanger temperature Comp discharge temperature Outdoor ambient temperature INDOOR UNIT INLET TEMP INDOOR UNIT H EXC TEMP INDOOR UNIT FILTER USE H Indoor room temperature Heat exchanger temperature Filter operating time 12 340 hours Display C Waiting for response Blinking After approx 10 seconds 1 1 Refrigerant address 00 Twin Refrigerant address 00 Outdoor unit Indoor unit 02 Indoor unit 01 Out...

Page 102: ... 8 Indoor heat exchanger temperature 7 Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable C C C C Stable Unstable Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 C or higher or indoor intake air temperature is 23 C or...

Page 103: ...oller circuit board Symbols on the board CNF1 Fan motor LEV A and LEV B LEV 5 Disconnect the pipe side connections of the following parts Thermistor Liquid TH3 Thermistor Discharge TH4 Thermistor 2 phase pipe Ambient TH7 6 High pressure switch 63H Thermistor Comp surface TH33 4way valve 21S4 6 Remove a nut from the terminal cover See Photo16 17 7 Remove the terminal cover and disconnect the compre...

Page 104: ...are correct 2 When exchanging the reactor make sure to exchange all the 3 reactors 8 Remove 2 electrical parts box fixing screws 4 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 6 YKA type Electrical parts box Electrical parts box fixing screw Photo 5 VKA type Electrical parts box This photo is fo...

Page 105: ... 2 on the bottom plate of the electrical parts box See Photo 11 10 Remove the reactor See Photo 11 Note 1 When reassembling the electrical parts box make sure that the wirings are correct Photo 9 Photo 11 Screws2 Electrical parts box Connectors of Reactor Reactor 5 Removing the thermistor 2 phase pipe TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the co...

Page 106: ... fixing screws 5 12 and remove the cover panel rear See Photo 1 5 Remove 4 right side panel fixing screws 5 12 in the rear of the unit and remove the right side panel See Photo 18 6 Disconnect the connectors TH3 white TH4 white and TH33 black on the controller circuit board in the electrical parts box 7 Loosen the fastener for the lead wire under the electrical parts box See Photo 14 8 Pull out th...

Page 107: ...V B RD on the controller circuit board in the electrical parts box 9 Removing LEV 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 cover panel front fixing screws 5 12 and remove the cover panel front See Photo 1 4 Remove 4 cover panel rear fixing screws 5 12 and remove the cover panel rear 5 Remove 3 valve bed fixing screws 4 10 and 4 stop valve fixing screws 5...

Page 108: ...the service panel See Photo 1 Removing the 4 way valve coil 2 Remove 4 way valve coil fixing screw M5 6 5 3 Remove the 4 way valve coil by sliding the coil toward you 4 Disconnect the connector 21S4 green on the outdoor multi controller circuit board in the electrical parts box 12 Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electr...

Page 109: ...109 OCH707C ...

Page 110: ...N Specifications are subject to change without notice CCopyright 2018 MITSUBISHI ELECTRIC CORPORATION Issued Jul 2020 No OCH707 REVISED EDITION C Issued Sep 2019 No OCH707 REVISED EDITION B Issued Apr 2019 No OCH707 REVISED EDITION A Published Dec 2018 No OCH707 Made in Japan ...

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