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9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air

conditioner, which uses DC motor for the indoor fan

motor and the outdoor fan motor. And the capacity-

proportional control compressor which can change the

motor speed in the range from 12 to 100 rps is mounted.
The DC motor drive circuit is mounted to the indoor

unit. The compressor and the inverter to control fan

motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the

indoor unit controller.
The indoor unit controller drives the indoor fan motor

based upon command sent from the remote controller,

and transfers the operation command to the outdoor

unit controller.
The outdoor unit controller receives operation

command from the indoor unit side, and controls the

outdoor fan and the pulse motor valve. (PMV)
Besides, detecting revolution position of the

compressor motor, the outdoor unit controller controls

speed of the compressor motor by controlling output

voltage of the inverter and switching timing of the

supply power (current transfer timing) so that motors

drive according to the operation command.
And then, the outdoor unit controller transfers reversely

the operating status information of the outdoor unit to

control the indoor unit controller.

Operations followed to judgment of

serial signal from indoor side.

• Detection of inverter input current and current

release operation

• Over-current detection and prevention operation

to IGBT module (Compressor stop function)

• Compressor and outdoor fan stop function when

serial signal is off (when the serial signal does not

reach the board assembly of outdoor control by

trouble of the signal system)

• Transferring of operation information (Serial

signal) from outdoor unit controller to indoor unit

controller

• Detection of outdoor temperature and operation

revolution control

• Defrost control in heating operation

(Temp. measurement by outdoor heat exchanger

and control for 4-way valve and outdoor fan)

3. Contents of operation command signal

(Serial signal) from indoor unit controller to

outdoor unit controller

The following three types of signals are sent from

the indoor unit controller.
• Operation mode set on the remote controller
• Compressor revolution command signal defined

by indoor temperature and set temperature

(Correction along with variation of room

temperature and correction of indoor heat

exchanger temperature are added.)

• Temperature of indoor heat exchanger
• For these signals ([Operation mode] and

[Compressor revolution] indoor heat exchanger

temperature), the outdoor unit controller monitors

the input current to the inverter, and performs the

followed operation within the range that current

does not exceed the allowable value.

4. Contents of operation command signal

(Serial signal) from outdoor unit controller

to indoor unit controller

The following signals are sent from the outdoor unit

controller.
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• Existence of protective circuit operation

For transferring of these signals, the indoor unit

controller monitors the contents of signals, and

judges existence of trouble occurrence.
Contents of judgment are described below.
• Whether distinction of the current operation

status meets to the operation command signal

• Whether protective circuit operates

When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

As the compressor adopts four-pole brushless DC

motor, the frequency of the supply power from

inverter to compressor is two-times cycles of the

actual number of revolution.

1. Role of indoor unit controller

The indoor unit controller judges the operation

commands from the remote controller and assumes

the following functions.
• Judgment of suction air temperature of the indoor

heat exchanger by using the indoor temp. sensor.

(TA sensor)

• Judgment of the indoor heat exchanger

temperature by using heat exchanger sensor

(TC sensor) (Prevent-freezing control, etc.)

• Louver motor control
• Indoor fan motor operation control
• LED (Light Emitting Diode) display control
• Transferring of operation command signal

(Serial signal) to the outdoor unit

• Reception of information of operation status

(Serial signal including outside temp. data) to the

outdoor unit and judgment/display of error

• Air purifier operation control

2. Role of outdoor unit controller

Receiving the operation command signal

(Serial signal) from the indoor unit controller, the

outdoor unit performs its role.
• Compressor operation control
• Operation control of outdoor fan motor
• P.M.V. control
• 4-way valve control

FILE NO. SVM-18051

- 35 -

Содержание RAS-3M26U2AVG-E

Страница 1: ...SERVICE MANUAL AIR CONDITIONER SPLIT TYPE RAS 3M26U2AVG E RAS 3M26U2AVG TR Revised on December 2018 R32 FILE NO SVM 18051 3 ...

Страница 2: ...16 63 7 216 5 5 5 17 532 216758 7 21 9 6 5 1 5 0 63 7 216 2 75 3 576 5 5 5 17 5 0 21752 2 5 0 4 23 5 7 21 6 5 37 21 5 167 7 21 352 85 52 2 72 126 7 7528 62 2 72 5 3 7 0 1 3 576 6 3 2 9 6 1 3 576 67 100 FILE NO SVM 18051 2 ...

Страница 3: ...s the third parties and the users due to troubles of the product after work when an incorrect work has been executed Indicates contents assumed that an injury or property damage may be caused on the repair engineers the third parties and the users due to troubles of the product after work when an incorrect work has been executed Mark Explanation Indicates prohibited items Forbidden items to do The...

Страница 4: ...sk an authorized dealer or qualified installation professional to install maintain the air conditioner INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE ELECTRIC SHOCK OR FIRE TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK MAKE SURE ALL POWER SWITCHES ARE OFF FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK DANGER HIGH VOLTAGE The high voltage circuit is incorporated Be careful to do ...

Страница 5: ...r room when joining the heat exchanger of indoor unit with interconnection piping Refrigerant connection inside a building or dwelling or room must be made by brazing or welding Joint connection of indoor unit by ﬂaring method can only be made at outdoor or at outside of building or dwelling or room Flare connection may cause gas leak and ﬂammable atmosphere After completion of installation or ser...

Страница 6: ...E TR x2 B13PKVSG E TR 7 5 4 1 to 9 0 9 0 2 0 to 11 2 Cooling Heating Name of refirigerant Weight of refrigerant kg 3 75 4 09 48 49 63 64 890 Sound pressure level Sound power level Height Width Depth Net weight 60 2507 2507 Flare connection R32 2 39 900 320 72 Outdoor Connection indoor unit of this specification m m m m W m h mm mm kg W A W Fan motor output Air flow rate Cooling Heating A mm dBA dB...

Страница 7: ... 05 05 17 2 00 1 50 1 50 3 8 5 0 6 0 950 1180 1620 4 80 5 65 7 51 90 95 98 4 24 10 05 05 20 2 70 1 50 1 50 3 8 5 7 6 7 950 1480 1940 4 80 7 08 9 00 90 95 98 3 85 13 05 05 23 3 59 1 46 1 46 3 8 6 5 8 0 950 1585 2540 4 80 7 58 11 78 90 95 98 4 10 16 05 05 26 4 32 1 44 1 44 3 8 7 2 8 4 950 1885 2720 4 80 9 02 12 62 90 95 98 3 82 18 05 05 28 4 63 1 39 1 39 3 8 7 4 8 6 950 1975 2750 4 80 9 45 12 76 90 ...

Страница 8: ...8 4 0 7 4 8 8 970 1975 2770 4 90 9 45 12 85 90 95 98 3 75 16 13 10 39 3 06 2 51 1 83 4 0 7 4 8 8 970 1975 2770 4 90 9 45 12 85 90 95 98 3 75 18 13 10 41 3 25 2 40 1 75 4 0 7 4 8 8 970 1975 2770 4 90 9 45 12 85 90 95 98 3 75 22 13 10 45 3 63 2 24 1 63 4 1 7 5 9 0 980 2000 2800 4 95 9 57 12 99 90 95 98 3 75 24 13 10 47 3 94 2 06 1 50 4 1 7 5 9 0 980 2000 2800 4 95 9 57 12 99 90 95 98 3 75 16 16 10 4...

Страница 9: ...1 50 1 50 3 8 5 7 6 7 950 1480 1940 4 59 6 77 8 61 90 95 98 3 85 13 05 05 23 3 59 1 46 1 46 3 8 6 5 8 0 950 1585 2540 4 59 7 25 11 27 90 95 98 4 10 16 05 05 26 4 32 1 44 1 44 3 8 7 2 8 4 950 1885 2720 4 59 8 63 12 07 90 95 98 3 82 18 05 05 28 4 63 1 39 1 39 3 8 7 4 8 6 950 1975 2750 4 59 9 04 12 20 90 95 98 3 75 22 05 05 32 4 93 1 23 1 23 3 8 7 4 8 6 950 1975 2750 4 59 9 04 12 20 90 95 98 3 75 24 ...

Страница 10: ...9 90 95 98 3 75 18 13 10 41 3 25 2 40 1 75 4 0 7 4 8 8 970 1975 2770 4 69 9 04 12 29 90 95 98 3 75 22 13 10 45 3 63 2 24 1 63 4 1 7 5 9 0 980 2000 2800 4 73 9 15 12 42 90 95 98 3 75 24 13 10 47 3 94 2 06 1 50 4 1 7 5 9 0 980 2000 2800 4 73 9 15 12 42 90 95 98 3 75 16 16 10 42 2 85 2 85 1 71 4 0 7 4 8 8 970 1975 2770 4 69 9 04 12 29 90 95 98 3 75 18 16 10 44 3 03 2 73 1 64 4 0 7 4 8 8 970 1975 2770...

Страница 11: ...0 1 50 3 8 5 7 6 7 950 1480 1940 4 40 6 49 8 25 90 95 98 3 85 13 05 05 23 3 59 1 46 1 46 3 8 6 5 8 0 950 1585 2540 4 40 6 95 10 80 90 95 98 4 10 16 05 05 26 4 32 1 44 1 44 3 8 7 2 8 4 950 1885 2720 4 40 8 27 11 56 90 95 98 3 82 18 05 05 28 4 63 1 39 1 39 3 8 7 4 8 6 950 1975 2750 4 40 8 66 11 69 90 95 98 3 75 22 05 05 32 4 93 1 23 1 23 3 8 7 4 8 6 950 1975 2750 4 40 8 66 11 69 90 95 98 3 75 24 05 ...

Страница 12: ...8 90 95 98 3 75 18 13 10 41 3 25 2 40 1 75 4 0 7 4 8 8 970 1975 2770 4 49 8 66 11 78 90 95 98 3 75 22 13 10 45 3 63 2 24 1 63 4 1 7 5 9 0 980 2000 2800 4 54 8 77 11 90 90 95 98 3 75 24 13 10 47 3 94 2 06 1 50 4 1 7 5 9 0 980 2000 2800 4 54 8 77 11 90 90 95 98 3 75 16 16 10 42 2 85 2 85 1 71 4 0 7 4 8 8 970 1975 2770 4 49 8 66 11 78 90 95 98 3 75 18 16 10 44 3 03 2 73 1 64 4 0 7 4 8 8 970 1975 2770...

Страница 13: ...8 0 10 8 380 1850 1680 2 16 8 85 7 79 80 95 98 4 32 13 05 05 23 4 94 1 98 1 98 2 0 8 9 11 2 380 2180 1790 2 16 10 43 8 30 80 95 98 4 08 16 05 05 26 5 15 1 87 1 87 2 0 8 9 11 2 380 2180 2400 2 16 10 43 11 13 80 95 98 4 08 18 05 05 28 4 80 1 60 1 60 2 0 8 0 10 8 380 1850 2730 2 16 8 85 12 66 80 95 98 4 32 22 05 05 32 5 66 1 62 1 62 2 0 8 9 11 2 380 2180 2870 2 16 10 43 13 31 80 95 98 4 08 24 05 05 3...

Страница 14: ...3 80 95 98 4 09 18 13 10 41 3 56 2 97 2 37 2 0 8 9 11 0 380 2175 2830 2 16 10 41 13 13 80 95 98 4 09 22 13 10 45 3 94 2 81 2 25 2 0 9 0 11 2 380 2200 2900 2 16 10 53 13 45 80 95 98 4 09 24 13 10 47 4 26 2 63 2 11 2 0 9 0 11 2 380 2200 2900 2 16 10 53 13 45 80 95 98 4 09 16 16 10 42 3 26 3 26 2 37 2 0 8 9 11 0 380 2175 2830 2 16 10 41 13 13 80 95 98 4 09 18 16 10 44 3 45 3 16 2 30 2 0 8 9 11 0 380 ...

Страница 15: ...00 2 00 2 00 2 0 8 0 10 8 380 1850 1680 2 07 8 47 7 45 80 95 98 4 32 13 05 05 23 4 94 1 98 1 98 2 0 8 9 11 2 380 2180 1790 2 07 9 98 7 94 80 95 98 4 08 16 05 05 26 5 15 1 87 1 87 2 0 8 9 11 2 380 2180 2400 2 07 9 98 10 65 80 95 98 4 08 18 05 05 28 4 80 1 60 1 60 2 0 8 0 10 8 380 1850 2730 2 07 8 47 12 11 80 95 98 4 32 22 05 05 32 5 66 1 62 1 62 2 0 8 9 11 2 380 2180 2870 2 07 9 98 12 73 80 95 98 4...

Страница 16: ... 95 98 4 09 18 13 10 41 3 56 2 97 2 37 2 0 8 9 11 0 380 2175 2830 2 07 9 95 12 56 80 95 98 4 09 22 13 10 45 3 94 2 81 2 25 2 0 9 0 11 2 380 2200 2900 2 07 10 07 12 87 80 95 98 4 09 24 13 10 47 4 26 2 63 2 11 2 0 9 0 11 2 380 2200 2900 2 07 10 07 12 87 80 95 98 4 09 16 16 10 42 3 26 3 26 2 37 2 0 8 9 11 0 380 2175 2830 2 07 9 95 12 56 80 95 98 4 09 18 16 10 44 3 45 3 16 2 30 2 0 8 9 11 0 380 2175 2...

Страница 17: ...00 2 00 2 00 2 0 8 0 10 8 380 1850 1680 1 98 8 11 7 14 80 95 98 4 32 13 05 05 23 4 94 1 98 1 98 2 0 8 9 11 2 380 2180 1790 1 98 9 56 7 61 80 95 98 4 08 16 05 05 26 5 15 1 87 1 87 2 0 8 9 11 2 380 2180 2400 1 98 9 56 10 20 80 95 98 4 08 18 05 05 28 4 80 1 60 1 60 2 0 8 0 10 8 380 1850 2730 1 98 8 11 11 61 80 95 98 4 32 22 05 05 32 5 66 1 62 1 62 2 0 8 9 11 2 380 2180 2870 1 98 9 56 12 20 80 95 98 4...

Страница 18: ...03 80 95 98 4 09 18 13 10 41 3 56 2 97 2 37 2 0 8 9 11 0 380 2175 2830 1 98 9 54 12 03 80 95 98 4 09 22 13 10 45 3 94 2 81 2 25 2 0 9 0 11 2 380 2200 2900 1 98 9 65 12 33 80 95 98 4 09 24 13 10 47 4 26 2 63 2 11 2 0 9 0 11 2 380 2200 2900 1 98 9 65 12 33 80 95 98 4 09 16 16 10 42 3 26 3 26 2 37 2 0 8 9 11 0 380 2175 2830 1 98 9 54 12 03 80 95 98 4 09 18 16 10 44 3 45 3 16 2 30 2 0 8 9 11 0 380 217...

Страница 19: ...g Heating 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 110 0 120 0 20 17 14 11 8 5 2 1 4 7 10 Heating capacity ratio Outdoor temp C Conditions Indoor DB20 C Air flow High Pipe length 5m 3 3 units operating 50 60 70 80 90 100 110 120 130 10 5 0 5 0 3 5 3 0 4 5 4 50 Cooling capacity ratio 10 15 20 25 Outdoor temp Ԩ Condition Indoor DB27 C WB19 C Indoor Indo air flow High Pipe length 5mx 3 3 units operat...

Страница 20: ...ces where installation repairs or similar work on air conditioning equipment is performed 3 If a refrigeration gas leakage occurs during installation servicing be sure to ventilate fully If the refrigerant gas comes into contact with fire a poisonous gas may occur 4 When installing or removing an air conditioner do not allow air moisture dust or oil to remain in the refrigeration cycle Otherwise p...

Страница 21: ...oints Nominal diameter 1 4 3 8 1 2 5 8 Reference outer diameter of copper pipe jointed mm 6 35 9 52 12 70 15 88 Minimum joint thickness mm 0 50 0 60 0 70 0 80 3 2 2 Processing of Piping Materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed air wat...

Страница 22: ...5 0 to 0 5 0 to 0 5 0 to 0 5 Conventional flare tool Clutch type Wing nut type 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 2 0 to 2 5 1 0 to 1 5 2 0 to 2 5 Table 3 2 4 Dimensions related to flare processing for R22 Nominal diameter 1 4 3 8 1 2 5 8 Outer diameter mm 6 35 9 52 12 70 15 88 Thickness mm 0 8 0 8 0 8 1 0 A mm Flare tool for R22 clutch type 0 to 0 5 0 to 0 5 0 to 0 5 0 to 0 5 ...

Страница 23: ...ue for R32 is the same as that for conventional R22 Incidentally when the torque is weak the gas leakage may occur When it is strong the flare nut may crack and may be made non removable When choosing the tighten ing torque comply with values designated by manufacturers Table 3 2 7 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the manufacturer ...

Страница 24: ...lusive tools the following equipments which serve also for R22 are necessary as the general tools 1 Vacuum pump Use vacuum pump by attaching vacuum pump adapter 2 Torque wrench For Ø6 35 Ø9 52 3 Pipe cutter 4 Reamer 5 Pipe bender 6 Level vial 7 Screwdriver 8 Spanner or Monkey wrench 9 Hole core drill Ø65 10 Hexagon wrench Opposite side 4mm 11 Tape measure 12 Metal saw Also prepare the following eq...

Страница 25: ...e connecting port of the electronic balance and charge liquid refrigerant Indoor unit Outdoor unit Opened Opened Refrigerant cylinder with siphon Check valve Open close valve for charging Electronic balance for refrigerant charging Opened Closed Service port 3 4 Recharging of Refrigerant When it is necessary to recharge refrigerant charge the specified amount of new refrigerant according to the fo...

Страница 26: ...lver and copper It is used to join iron copper or copper alloy and is relatively expensive though it excels in solderability 2 Phosphor bronze brazing filler Phosphor bronze brazing filler is generally used to join copper or copper alloy 3 Low temperature brazing filler Low temperature brazing filler is generally called solder and is an alloy of tin and lead Since it is weak in adhesive strength d...

Страница 27: ...x which does not contain chlorine 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water 4 Remove the flux after brazing 3 5 3 Brazing As brazing work requires sophisticated techniques experiences based upon a theoretical knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pipe in...

Страница 28: ... leg part Hanger Fan guard Mounting hole sold separately 12 dia 3 emboss 5 drain long hole dia 20 88 Drain hole dia 25 Knock out 52 52 Hanger Outdoor air temperature sensor 600 365 Detailed B leg part Outside line of product Outside line 365 600 of product Detailed A leg part C L 34 45 94 2 193 72 5 34 5 Gas valve Service part Liquid valve 157 Connecting pipe port Connecting pipe dia 6 35 Connecti...

Страница 29: ... TS t TGC t TGB COMPRESSOR THERMOSTAT RED WHI WHI BLK FOR REACTOR REACTOR 4WAY VALVE COIL 4WV CN701 WHI 4 1 P HIGH PRESSURE CN690 SWITCH REACTOR WHI WHI F IUb T3 15A 250V BLK SCREW EARTH P07 P04 P05 F F IUa IUa T10A T10A 250V 250V WHI C Y 250V T3 15A F01 RED THE SIGN IN IS TERMINAL COVER DISPLAYED IN THE WHITE S BLACK C RED R TERMINAL OF COMPRESSOR WIRING DIAGRAM GRY GRAY LINE FILTER GAS SIDE PIPE...

Страница 30: ...ensor TS sensor Temp sensor at A room gas side TGa sensor Temp sensor at B room gas side TGb sensor Temp sensor at C room gas side TGc sensor Compressor thermo Terminal block 9P Model name DX220A2T 20L ICF 280 A60 1 CH 56 3Z T CH 76 2VK STF H01AP1874A1 UKV A039 MCC 1571 WP 041 MCC 1436 CS 12AL Rating 3 Phases 4 Poles 2000 W Output 60 W 5 8 mH 18 5 A 9 9 mH 1 A AC 200 240 V DC 12 V AC 220 240 V AC ...

Страница 31: ...exceeds 41m add 20g of refrigerant per 1 meter over Connection of only one indoor unit is unavailable Two or more indoor units should be connected DX220A2T 20L Outdoor unit tank 1500cc 2 3 450Lx2 2 3 550Lx1 2 3 600Lx1 1 92kg R32 7 REFRIGERANT CYCLE DIAGRAM 7 1 Refrigerant cycle diagram FILE NO SVM 18051 31 ...

Страница 32: ...16 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 18 16 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 22 16 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 24 16 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 18 18 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 22 18 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 24 18 0 7 0 9 9 11 52 54 62 3 1 3 3 48 50 1 1 71 3 units 05 05 05 0 7 0 9 10 12 50 52 58 2 4 2 6 40 42 0 2 57...

Страница 33: ... 73 10 10 10 0 8 1 0 11 13 51 53 60 2 3 2 5 38 40 1 1 72 13 10 10 0 8 1 0 11 13 51 53 60 2 3 2 5 38 40 1 1 72 16 10 10 0 8 1 0 11 13 51 53 60 2 5 2 7 37 39 2 0 72 18 10 10 0 8 1 0 11 13 51 53 60 2 5 2 7 37 39 2 0 73 22 10 10 0 8 1 0 11 13 51 53 60 2 5 2 7 37 39 2 0 73 24 10 10 0 8 1 0 11 13 51 53 60 2 5 2 7 37 39 2 0 73 13 13 10 0 8 1 0 11 13 51 53 60 2 5 2 7 37 39 2 0 73 16 13 10 0 8 1 0 11 13 51...

Страница 34: ...ion circuit Converter AC DC Gate drive circuit Inverter DC AC Output current sensor Output current sensor Input current sensor C unit serial signal communication circuit B unit serial signal communication circuit A unit serial signal communication circuit Gate drive circuit Inverter DC AC Signal communication with control P C board 4 way valve control M C U 2 PWM synthesis function Input current r...

Страница 35: ...mode set on the remote controller Compressor revolution command signal defined by indoor temperature and set temperature Correction along with variation of room temperature and correction of indoor heat exchanger temperature are added Temperature of indoor heat exchanger For these signals Operation mode and Compressor revolution indoor heat exchanger temperature the outdoor unit controller monitor...

Страница 36: ...control 40 5 Winding Coil heating control 41 6 Defrost control Only in heating operation 41 7 Compressor protective control 41 8 Discharge temperature control 42 9 Pulse motor valve PMV control 42 9 3 Service switch SW801 SW802 operations 43 10 High pressure switch Compressor case thermostat control 42 9 4 Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo off Side in Heat...

Страница 37: ...operation function Compressor Outdoor fan motor 4 way valve Pulse motor valve P M V Signal receiving Indoor unit control Operation command Serial signal send receive Selection of operation conditions ON OFF Serial signal send receive Outdoor unit control Inverter Item 1 Basic operation Operation flow and applicable data etc 1 Operation control Receiving the user s operation condition setup the ope...

Страница 38: ... the operation signal sent from the indoor unit 1 The relay of 4 way valve is turned on for a few seconds when 4 way valve is driven Description No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Indoor unit Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last Pushed first Pushed last P...

Страница 39: ...peration of air conditioner continues with the fan motor stopped 3 Whether the fan is locked or not is detected and the operation of air conditioner stops and an alarm is displayed if the fan is locked 4 According to each operation mode by the conditions of outdoor temperature To and compressor revolution the speed of the outdoor fan shown in the table is selected Cooling operation dry operation 1...

Страница 40: ...mpressor at the calculated revolutions 3 The compressor operation range in each operating mode is shown in the left table 1 The input current of the outdoor unit is detected in the inverter section of the outdoor unit 2 According to the detected outdoor temperature the specified value of the current is selected 3 Whether the current value exceeds the specified value or not is judged 4 If the curre...

Страница 41: ...ntinue Description Winding Coil heating is performed when the following conditions are met Condition 1 When the discharge sensor temperature Td is less than 30 C Condition 2 When the outdoor sensor temperature To is as shown in the left figure The necessity of defrost operation is detected by the outdoor heat exchanger temperature The conditions to detect the necessity of defrost operation differ ...

Страница 42: ...nt SH control 3 If the discharge temperature was excessively up adjust the open degree of valve so that it is in the range of set temperature Discharge temp control 4 When defrost operation is performed the open degree of PMV is adjusted according to each setup conditions during preparation for defrost and during defrost operation 4 way valve is inversed 5 When turning off the compressor by thermo...

Страница 43: ... appear in case of flashing of D804 or D805 LED display can be returned to the initial status by pushing and holding the service switches SW801 and SW802 for 5 seconds or more simultaneously D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green In the initial status of LED display D805 is ON as below Normal D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green ON ...

Страница 44: ...alidated 6 When you want to continue the settings moreover repeat items from 3 to 5 7 To invalidate various settings execute items 1 to 3 push SW802 and then D805 will turn off 8 Push and hold SW802 for 5 seconds or more D804 changes to slow flashing D805 is turned off and then various settings are invalidated If an unknown point generated on the way of the operation push and hold SW801 and SW802 ...

Страница 45: ...of all indoor units During the check the display is kept as below Operation is up to 30 minutes You cannot check wiring piping when the external temperature is 5 or less During the check the compressor and the fun of the outdoor indoor unit repeat ON OFF Operate the fan motor forcedly The motor rotates at 500rpm and operation is 2 minutes During the check the display is kept as below PMV is initia...

Страница 46: ...display unit A The opening of PMV Electronic expansion valve is displayed Refer to table C 10 PMV opening display unitB The opening of PMV Electronic expansion valve is displayed Refer to table C 11 PMV opening display unit C The opening of PMV Electronic expansion valve is displayed Refer to table C 12 Gas temperature sensor TG display unit A The detected value of the gas temperature sensor TG is...

Страница 47: ...e sensor TGb error 2 1C Gas pipe unit C temperature sensor TGc error PMV error SH 20 PMV error SH 8 20 PMV leakage error unit A 20 PMV leakage error unit B 20 PMV leakage error unit C Miswiring mispiping check error 1 Back up operation is performed without error display of the indoor unit 2 Operated normally when the air conditioners in other rooms are driven B Error display of the latest error in...

Страница 48: ...nd C 6 0 4 6 6 9 30 34 9 120 139 Trouble in unit B and C 7 5 9 7 7 9 35 39 9 140 159 Trouble in unit A B and C 8 10 14 8 8 9 40 44 9 160 179 9 15 19 9 9 9 45 49 9 180 199 10 20 24 10 10 9 50 54 9 200 219 11 25 29 11 11 9 55 59 9 220 239 12 30 34 12 12 9 60 64 9 240 259 13 35 39 13 13 9 65 69 9 260 279 14 40 44 14 14 9 70 74 9 280 299 15 45 49 15 15 9 75 79 9 300 319 16 50 54 16 16 9 80 84 9 320 33...

Страница 49: ...splay starts No D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Initial status Push SW801 SW802 at the same time for 5 sec or more Turn on the circuit breaker D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Push SW802 1 time D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Hold time t 5 sec Push SW802 Yes No D800 D801 D802 D803 D8...

Страница 50: ...rts No D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Push SW801 8 times Initial status Push SW801 SW802 at the same time for 5 sec or more Turn on the circuit breaker Push SW802 1 time Push SW801 Support function item Compressor operation frequency Item selecting Information display Refer to 9 3 5 Compressor ON D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yell...

Страница 51: ...temperature of the indoor heat exchanger becomes over 55 C or more in B room the indoor fan stops the intermittent operation and starts continuous operation While heating operation is executed in 2 rooms if room temperature reached the setup temperature in both rooms and thermo off occurred both indoor units start intermittent operation of the indoor fan T on 2 min A room Thermo ON continues 0 rpm...

Страница 52: ...ased Incidentally a common wrench is used for nominal diameters 1 4 and 3 8 By increasing the clamp bar s receiving hole strength of spring in the tool has been improved Used when flare is made by using conventional flare tool Connected to conventional vacuum pump It is necessary to use an adapter to prevent vacuum pump oil from flowing back to the charge hose The charge hose connecting part has t...

Страница 53: ...al Polyethylene foam 6 mm thick Parts name Refrigerant piping 1 Putty PVC tapes Parts name Indoor unit abbreviation Liquid side O D Gas side O D 05 07 10 13 6 35 mm 9 52 mm 16 18 22 24 6 35 mm 12 7 mm Q ty 1 ea 1 ea Rubber cap Water proof Installation manual 1 5 CD ROM Installation manual 1 1 F GAS label 1 Drain nipple 1 1 Part that do not exist in RAS 3M26U2AVG TR When duct type or cassette type ...

Страница 54: ...he indoor units first and then to make connections to the outdoor units However if outdoor work is difficult you can change the procedure For example by making adjustments to the wiring and piping lengths on the inside rather than the outside When using an air conditioner under low outside temperature conditions Outside temp 5 C or lower In COOL mode prepare a duct or wind shield so that it is not...

Страница 55: ...pe with a pipe cutter Obliquity Roughness Warp 90 2 3 4 Remove the burr inside of the pipe When removing the burr be careful so that chips do not fall into the pipe Remove the flare nuts attached to the outdoor indoor unit then insert them into each of the pipes Flare the pipes See the following table for the projection margin A and flaring size B Die Pipe B A Pipe A B Outside diameter Thickness R...

Страница 56: ...d to maintain its strength over a long period of time and sufficient consideration should be given to ensuring that the outdoor unit will not fall 6 When the outdoor unit is to be mounted high on a wall take particular care to ensure that parts do not fall installer is protected 7 When doing installation work on level ground it is usual to wiring and piping connections to the indoor units And then...

Страница 57: ...fully then stop operating the vacuum pump Leave the gauge and pump as they are for 1 or 2 minutes then make sure that the compound pressure gauge reading stays at 101 kPa 76 cmHg You need not add refrigerant 4 Disconnect the charge hose from the service port then open the valve stem fully using a 4 mm hexagon wrench Hexagon wrench is required Service port cap 5 Tighten the service valve stem cap a...

Страница 58: ...ic shock CAUTION Use a circuit breaker of a type that is not tripped by shock waves Incorrect incomplete wiring will cause electrical fires or smoke Prepare the power source for exclusive use with the air conditioner This product can be connected to the main power Fixed wire connections A switch that disconnects all poles and has a contact separation of at least 3 mm must be incorporated into the ...

Страница 59: ...ic shock but also to absorb both static which is generated by high frequencies and held in the surface of the outdoor unit and noise since the air conditioner incorporates a frequency conversion device called an inverter in the outdoor unit If the air conditioner is not grounded users may receive an electric shock if they touch the surface of the outdoor unit and that unit is charged with static 1...

Страница 60: ...ime sec D800 D801 D802 D803 D804 D805 4 Press the SW801 4 times until the LED is displayed as below D800 D801 D802 D803 D804 D805 5 Press SW802 for 1 times Then D805 light is flashing 5 times sec D800 D801 D802 D803 D804 D805 6 Hold down SW802 for at least 5 seconds Then the wiring piping check starts automatically The LED display is lighted for a moment D800 D801 D802 D803 D804 D805 If no problem...

Страница 61: ...the remote control signal simultaneously and operate In this case the operation can be preserved by setting either one remote control to B setting Both are set to A setting in factory shipment The remote control signal is not received when the settings of indoor unit and remote control are different There is no relation between A setting B setting and A room B room when connecting the piping and c...

Страница 62: ...ay not normally discharge according to error contents and the voltage may remain Therefore be sure to discharge the capacitor WARNING For discharging never use a screwdriver and others for short circuiting between and electrodes As the electrolytic capacitor is one with a large capacity it is very dangerous because a large electric spark will occur Discharging method Connect the discharge resistan...

Страница 63: ...ode the operation mode is changed In HEAT mode the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives at the set temperature Cool Dry or Heat operation cannot be performed Description The OPERATION lamp of the indoor unit flashes when power source is turned on If START STOP button is operated once flashing stops Flashes also in power failur...

Страница 64: ... contents of items B and C and a part of item E are displayed when air conditioner operates When item B and C and item B and a part of item E occur concurrently priority is given to the block of item B The check codes can be confirmed on the remote controller for servicing Indoor indication lamp flashes Which lamp does flash Item A B C D E Check code Block display OPERATION Green Flashing display ...

Страница 65: ...ler Press ON or OFF button If there is no fault with a code the indoor unit will beep once Beep and the display of the remote controller will change as follows The TIMER indicator of the indoor unit flashes continuously 5 times per 1 sec Check the unit with all 52 check codes to as shown in Table 11 4 1 Press ON or OFF button to change the check code backward If there is a fault the indoor unit wi...

Страница 66: ...room Operation Flashes when 1 Check the sensor TA and connection temperature sensor is continues error is detected 2 In case of the sensor and its short Circuit or disconnection connection is normal check the P C board TC sensor The heat Operation Flashes when 1 Check the sensor TC and connection exchanger temperature continues error is detected 2 In case of the sensor and its sensor of the indoor...

Страница 67: ...or unit open 4 The outdoor unit abnormal stop at circuit of signal some time Signal circuit of indoor If the other check codes are found P C board or outdoor concurrently check them together P C board is failure Check protector hardware such in some period as Hi Pressure switch Thermal Relay etc Check refrigerant amount or any possibility case which may caused high temperature or high pressure Che...

Страница 68: ...fter Even if trying to operate again all inverter P C board error error is detected operations stop replace inverter 4 times P C board All OFF Flashes after error is detected 4 times 1 Check sensors TE TS connection In case of sensors and it s connection is normal check the inverter P C board 2 Check 4way valve operation position In case TE TS detected temperature relationship are different from n...

Страница 69: ...luding unit has been sent when operates error is detected compressor operation start But after continue Flashing stop that signal is stop some time Outdoor unit and outdoor unit Instantaneous power stop start to operate failure when the return Some protector signal from the hardware of the outdoor unit is outdoor unit open normal circuit of signal Signal circuit of indoor P C board or outdoor P C ...

Страница 70: ...etected 4 times 1 Check sensors TD 2 Check refrigerant amount 3 In case of P M V exists Check P M V by measure the resistance of the coil and confirm its operation sound of initial operation etc 4 Observe any possibility cause which may affect high temperature of compressor Compressor is high current All OFF Flashes after though operation Hz is error is detected decreased to minimum limit 8 times ...

Страница 71: ...is count as 1 time then once operation is stop and re started After re starting operation within 6 minutes if same error is detected error count is add count become 2 times When error count comes 4 8 11 or 18 times record error to check code But after re starting operation if no error is detected and air conditioner can operate more than 6 minutes error count is cleared The others including compre...

Страница 72: ...m indoor unit to outdoor unit is correctly performed based upon the following diagram NOTE Measurement should be performed 2 minutes and 30 seconds after starting of the operation Be sure to prepare a diode for judgment Normal time Voltage swings between DC15 and 60V Inverter Assembly check Abnormal time Voltage does not vary 2 Outdoor unit stops in a little while after operation started Check pro...

Страница 73: ...cation signal display Send signal from outdoor signal 1 Power ON display When the power of the outdoor unit is turned on D805 LED goes on 2 Error display When the outdoor controller detects some errors some LEDs go on or flash according to the error as described in Error display table Refer to 11 6 3 Specific operation display When SW801 is pushed and a specific operation is operated some LEDs go ...

Страница 74: ...detection circuit error 17 Current detection circuit error 1C Communication error between MCU 1A Fan system error 1E Discharge temperature error 19 Discharge temperature sensor TD error 1 1B Outdoor air temperature sensor TO error 18 Suction temperature sensor TS error 18 Heat exchanger temperature sensor TE error 2 1C Gas pipe unit A temperature sensor TGa error 2 1C Gas pipe unit B temperature s...

Страница 75: ... NO NO NO NO NO Is PMV under correct conditions Is service valve fully opened Are CN609 of P C board MCC 1571 connection and case thermostat correct Check outdoor P C B MCC 1571 Defect Replace Short each pins of CN609 Can compressor operate Repair defective position Recharge refrigerant Is there gas leak Is there refrigerant shortage Check compressor Rare short etc Defect Replace NO YES YES NO YES...

Страница 76: ... Check outdoor P C B WP 041 Defect Replace Check wiring construction Ask repair of power supply Check outdoor P C B MCC 1571 Defect Replace Is connection of CN600 on P C B WP 041 correct Is resistance value of TD sensor correct Correct connector Sensor error Replace Check outdoor P C B WP 041 Defect Replace Is connection of CN602 on P C B WP 041 correct Is resistance value of TO sensor correct Che...

Страница 77: ...rt circuit Check outdoor P C B MCC 1571 and WP 041 Defect Replace Compressor lock Replace 1 1 Does PMV correctly operate Is there refrigerant stagnation Is compressor under correct condition Is AC mains voltage correct 198 to 264V Does something block the ventilation around the heat sink Does something air flow from the fan Apply radiation grease to objective parts Retightening of screws Is wire c...

Страница 78: ...ck and troubleshooting Item without special mention indicates part of outdoor unit A room gas side temp sensor TGa error B room gas side temp sensor TGb error C room gas side temp sensor TGc error ON 3 sec ON 0 5 sec OFF z OFF z z z YES NO Communication error between MCUs Are connections of CN802 on P C B MCC 1571 and CN802 on P C B WP 041 correct Correct connection Check outdoor P C Boards Defect...

Страница 79: ...ompressor lead Board side Compressor Side Reactor lead Power supply lead Check wiring construction Ask repair of power supply Check wire connection and correct it Remove and improve the cause of overload Check outdoor P C B MCC 1571 Defect Replace YES YES YES NO NO NO 1F Compressor break down ON 3 sec ON 0 5 sec OFF z OFF z Is AC mains voltage correct 198 to 264V Is wire connection correct Compres...

Страница 80: ...TA sensor TC sensor YES NO OK Error Repair defective position Replace defective part Correct connector Sensor error Replace Check outdoor P C B WP 041 and indoor A room P C board Defect Replace Is PMV under correct conditions Check temp sensor of A room indoor unit TA sensor TC sensor YES NO OK Error Check code Outdoor LED display Check and troubleshooting Item without special mention indicates pa...

Страница 81: ...door unit Clogging of heat exchanger Short circuit Parts check Defective Replace Elimination of blocking element Check IPDU PC board Defective Replace Wiring check Correct Open service valve fully Overcharge of refrigerant Clogging Pipe breakage Abnormal overload YES YES YES YES YES YES NO NO NO NO NO NO YES NO High pressure SW system error High pressure protective operation Connection of connecto...

Страница 82: ...onnect the connector and measure resistance value with the tester Normal temperature Position Red White White Black Black Red Resistance value 0 58 0 03Ω Position Red White White Black Black Red Resistance value 32 6 3 3Ω Temperature Sensor TD kΩ TO TE TS kΩ TGa to TGc kΩ 10 C 20 C 25 C 40 C 50 C 105 64 51 27 18 20 6 12 6 10 0 5 1 3 4 20 0 12 5 10 0 5 3 3 6 4 High pressure switch Model ACB 4UB83W ...

Страница 83: ...de of the outdoor fan motor 4 Motor drive circuit error of the outdoor P C board 3 How to simply judge whether outdoor fan motor is good or bad Turn OFF the breaker Fan motor is normal Does the fan rotate without trouble when rotating it with hands Disconnect connector of the outdoor fan motor from P C board MCC 1436 Outdoor P C board error Fan motor error YES YES NO NO If the resistance value bet...

Страница 84: ...onnector CN701 White UART communication connector CN802 Blue Lead wire for High pressure switch connecting connector CN690 Black Reactor connecting connectors Electrolytic capacitors 760µF 400V Compressor Compressor Compressor output terminals output terminals output terminals CN200 CN200 CN200 CN201 CN201 CN201 CN202 CN202 CN202 Fan motor output Fan motor output Fan motor output CN300 CN300 CN300...

Страница 85: ... CN604 Yellow UART communication connector CN804 White UART communication connector CN802 Blue PMV connector A room CN700 Yellow B room CN701 Red C room CN702 Green Specific operation pecific operation and Initial set SW and Initial set SW Lead wire for grounding ead wire for grounding P07 Black P07 Black Specific operation and Initial set SW Lead wire for grounding P07 Black Demand response conne...

Страница 86: ...t panel 2 to this side and remove it while pulling the front panel downward 1 3 Remove the power supply cable and the indoor outdoor connecting wire from the cord clamp and the terminal 4 Remove the upper cabinet Hexagonal screw Ø4 10 4 pcs 2 Attachment 1 Connect the power supply cable and the indoor outdoor connecting wire to the terminal and then fix them with the cord clamp 2 Mount the front pa...

Страница 87: ...nger ST1T Ø4 8 1 pc 6 Take off screws for the discharge port cabinet and the fin guard Hexagonal screw Ø4 10 2 pcs 1 Detachment 1 Perform work of Detachment 1 of 1 2 Take off screw for the rear cabinet and the valve fixed board Hexagonal screw Ø4 10 2 pcs 3 Take off screw for the rear cabinet and the anchor board Hexagonal screw Ø4 10 1 pc 4 Take off screws for the rear cabinet and the heat exchan...

Страница 88: ...Ga sensor 2P Yellow CN605 TGb sensor 2P Red CN606 TGc sensor 2P Green CN609 Demand response connector 3P Pink CN700 PMV coil 6P Yellow CN701 PMV coil 6P Red CN702 PMV coil 6P Green 5 Cut the bundling band that binds the PMV coil and the relay lead wire 6 Remove the connectors relay connector and the lead wire that are connected from IPDU P C board to the other parts CN701 4 way valve coil 2P White...

Страница 89: ...r lead of the compressor 10 Pull up the inverter assembly and then remove it Hold up both the reactor cover side and the inverter box side and then remove the inverter assembly upward Caution to mount the inverter assembly When mounting the inverter assembly to the partition plate be sure to do hooking NOTE Using the bundling band on the market be sure to bind the portions which were bound before ...

Страница 90: ...3 of 5 CAUTION Never disassemble the inverter until 5 minutes after the power supply was turned off because there is a fear that an electric shock may occur 2 Take off screw for CDB fixed board and the inverter box ST1T Ø4 8 1 pc 3 Remove CDB P C board assembly 4 Remove the connectors connected to IPDU P C board 4 way valve coil compressor case thermo UART 2 Inter unit wire 5 Remove the relay conn...

Страница 91: ... careful that IPDU P C board is difficult to be taken out by radiating grease for the heat sink 10 Mount a new IPDU P C board NOTE Take note that the compressor lead V CN201 white and the reactor lead CN05 CN06 are correctly attached For the compressor lead the transparent sleeve is attached to the circular terminal and for the reactor lead the transparent sleeve is not attached to the circular te...

Страница 92: ... of the reactor 3 Remove the reactor cover Truss head B tight screw Ø4 6 4 pcs 4 Remove the reactor ST1T Ø4 6 2 pcs 5 Mount a new reactor 2 Reactor to be attached to the partition plate 1 Perform works of Detachment 1 of 1 and 4 2 Remove the reactor from the partition plate ST1T Ø4 8 2 pcs 3 Mount a new reactor Caution to mount the inverter assembly When mounting the inverter assembly to the parti...

Страница 93: ...emove the relay connector for fan motor from the inverter 5 Remove the fan motor lead from the fan motor lead fixing rubber of the penetrating part of the partition plate 6 Take off the fixing screws 4 pcs each while supporting the fan motor so that it does not fall Caution to assembly of fan motor Tighten the flange nut with 4 95N m 50kgf cm Adjust length of the fan motor lead fixing rubber so th...

Страница 94: ...scharge pipe suction pipe connected to the compressor NOTE Take care that the electric parts sensors compressor and etc are not caught by flame Otherwise operation trouble may occur 9 Pull out the refrigerating cycle upward NOTE Pull out the refrigerating cycle by two or more persons 10 Take off the compressor bolts 3 pcs which fix the compressor to the compressor fixing plate 11 Remove the compre...

Страница 95: ... in order to prevent damage on the product 2 Take off the discharge port cabinet and put it as the fan guard side directs downward 3 Take off the hooking claws 8 positions of the fan guard 2 Attachment 1 Push the hooking claws 8 positions with hands from the front side and then fix the claws CAUTION Check all the hooking claws are fixed at each specified position Remarks FILE NO SVM 18051 95 ...

Страница 96: ...of 1 2 Turn the coil clockwise counterclockwise and then remove it from PMV main unit All 4 pcs 2 Attachment 1 Mount the PMV coil so that the coil lead wire taking out part directs downward CAUTION Coil Mount yellow coil only so that lead wire taking out part directs upward 2 Match the positioning projection of coil with the concave part of PMV unit surely and fix it Remarks Concave part of PMV Pr...

Страница 97: ...e straight part of the discharge pipe so that the lead wire directs upward and the sensor directs upward of the cabinet Attachment Insert TO sensor holder claw into the heat exchange terminal block hole and then mount it Remarks NOTE At working time finish time be sure not to damage the cover of the sensor lead wire with edge of sheet metal etc If the cover of the sensor lead wire is damaged it is...

Страница 98: ...band being on the market be sure to bind the position which was bound Remarks NOTE At working time finish time be sure not to damage the cover of the sensor lead wire with edge of sheet metal etc If the cover of the sensor lead wire is damaged it is dangerous because an electric shock or fire may be caused NOTE After replacing of parts check the sensors are mounted at the specified positions If th...

Страница 99: ... 2 Recover the refrigerant gas from the outdoor unit 3 Peform works of 2 3 and 4 4 Remove the soundproof plate TD sensor Reactor on the partition plate and butyl on the pipe of pressure switch 5 Take care that the electric parts 4 way valve unit butyle compressor accum tank and etc are not caught by flame Otherwise operaion trouble may occur 2 Attachment Be sure not to burn lead wire of the pressu...

Страница 100: ...K ASM PANEL FRONT AIR OUTLET CABINET UPPER CABINET ASSEMBLY MOTOR BASE FAN GUARD TOSHIBA PROPELLER FAN DRAIN NIPPLE BELLMOUTH CONDENSER ASSEMBLY COMPRESSOR BONNET 6 35 DIA BONNET 9 52 DIA BONNET 12 7 DIA VALVE PACKED 9 52 DIA VALVE PACKED 12 7 DIA 70 43T91323 43 43T46501 71 43T91318 44 43T46500 72 43T91324 45 43T46499 SOCKET 6 35 DIA SOCKET 9 52 DIA SOCKET 12 7 DIA 73 43T91301 BODY PMV COIL PMV VA...

Страница 101: ...L BLOCK 9P 700 TERMINAL BLOCK 3P 711 SPACER Location Part Location Part No No No No 700 43T60427 708 43T61315 701 43T60452 709 43T61316 702 43T50347 710 43T6V587 703 43T50356 711 43T61324 704 43T60433 712 43T6W379 705 43T58341 713 43T6W382 706 43T58307 43T60490 707 43T60413 TERMINAL BLOCK SERV TERMINAL SENSOR ASSY SERVICE SERVICE SENSOR SENSOR ASSY SERVICE REACTOR REACTOR FUSE 719 43T60361 SPACER ...

Страница 102: ...144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAMBOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND ...

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