Toshiba RAS-2M14U2AVG-E Service Manual Download Page 56

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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

13 to 110

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-18020

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Summary of Contents for RAS-2M14U2AVG-E

Page 1: ...SERVICE MANUAL AIR CONDITIONER SPLIT TYPE RAS 2M14U2AVG E TR RAS 2M18U2AVG E TR RAS 3M18U2AVG E TR Revised on May 2018 R32 FILE NO SVM 18020 2 ...

Page 2: ...WIRING DIAGRAM 42 6 SPECIFICATIONS OF ELECTRICAL PARTS 45 7 REFRIGERANT CYCLE DIAGRAM 46 8 CONTROL BLOCK DIAGRAM 53 9 OPERATION DESCRIPTION 56 10 INSTALLATION PROCEDURE 73 11 HOWTO DIAGNOSE THE TROUBLE 81 12 HOW TO REPLACE THE MAIN PARTS 107 13 EXPLODED VIEWS AND PARTS LIST 116 FILE NO SVM 18020 1 2 ...

Page 3: ...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 s...

Page 4: ...k 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 t...

Page 5: ...g or 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 ...

Page 6: ...5 4 15 920 92 4 40 4 20 4 05 890 92 4 55 4 35 4 15 2M14U2AVG E TR B13PKVSG E TR 2 4 0 1 6 to 4 9 4 4 1 3 to 5 2 Cooling Heating Name of refirigerant Weight of refigerant kg 4 35 4 94 45 46 58 59 630 Sound pressure level Sound power level Height Width Depth Net weight 43 1863 1863 Flare connection R32 1 02 φ6 35 φ9 52 800 300 43 Outdoor Connection indoor unit of this specification m m m m W m h mm ...

Page 7: ...it of this specification RAS B16PKVSG E TR B13PKVSG E TR Heating Capacity kW 5 6 FILE NO SVM 18020 1 7 For performance when each indoor unit is combined with other unit refer to the separate table The specifications may be subject to change without notice for purpose of improvement Accessory Outdoor unit Installation manual 1 Wiring connection Power supply interconnection 3 Wires includes earth 4 ...

Page 8: ...5 1 60 4 90 290 1150 1 84 5 55 Cooling 230V Total A B C ΣkBTU A B C Cooling capacity kW Power consumption W Operating current A 1 unit 05 5 1 50 1 50 310 1 60 1 20 1 80 240 380 1 45 1 80 07 7 2 00 2 00 420 2 15 1 30 2 50 240 590 1 45 2 80 10 10 2 70 2 70 640 3 25 1 30 3 20 240 860 1 45 4 00 13 13 3 70 3 70 1050 5 25 1 30 4 10 240 1190 1 45 5 55 2 units 05 05 10 1 50 1 50 3 00 910 4 30 1 60 4 20 29...

Page 9: ...910 4 12 1 60 4 20 290 1130 1 68 5 01 07 05 12 2 00 1 50 3 50 960 4 35 1 60 4 30 290 1130 1 68 5 00 10 05 15 2 57 1 43 4 00 1030 4 69 1 60 4 40 290 1130 1 68 5 00 13 05 18 2 85 1 15 4 00 960 4 36 1 60 4 50 290 1130 1 68 5 00 07 07 14 2 00 2 00 4 00 1030 4 69 1 60 4 50 290 1130 1 68 5 00 10 07 17 2 30 1 70 4 00 960 4 36 1 60 4 60 290 1130 1 68 5 00 13 07 20 2 60 1 40 4 00 940 4 27 1 60 4 70 290 114...

Page 10: ...90 Total B A C ΣkBTU A B C Heating capacity kW Power consumption W Operating current A 1 unit 05 5 2 00 2 0 440 2 28 0 9 2 5 190 580 1 15 2 75 07 7 2 70 2 7 610 3 16 0 9 3 4 190 820 1 15 3 90 10 10 4 00 4 0 1050 5 37 0 9 4 8 190 1380 1 15 6 45 13 13 4 40 4 4 1350 6 83 1 0 5 2 210 1410 1 27 6 61 2 units 05 05 10 2 00 2 00 4 0 920 4 34 1 3 4 7 250 1270 1 52 5 90 07 05 12 2 70 2 00 4 4 960 4 53 1 3 4...

Page 11: ...3 73 1 87 4 4 960 4 35 1 3 4 9 250 1270 1 45 5 65 13 05 18 4 00 1 60 4 4 950 4 30 1 3 5 0 250 1250 1 45 5 56 07 07 14 2 70 2 70 4 4 960 4 35 1 3 5 1 250 1270 1 45 5 65 10 07 17 3 34 2 26 4 4 950 4 30 1 3 5 1 250 1250 1 45 5 56 13 07 20 3 64 1 96 4 4 920 4 17 1 3 5 2 250 1250 1 45 5 56 10 10 20 2 80 2 80 4 4 930 4 21 1 3 5 1 250 1230 1 45 5 48 13 10 23 2 30 2 10 4 4 910 4 12 1 3 5 2 250 1230 1 45 5...

Page 12: ...3 65 0 55 4 2 1100 5 25 1 7 5 4 270 1840 1 60 8 70 13 05 18 4 66 0 54 5 2 1520 7 30 1 7 5 5 270 1840 1 60 8 70 16 05 21 4 75 0 45 5 2 1490 7 15 1 7 5 5 270 1840 1 60 8 70 07 07 14 2 00 2 00 4 0 1000 4 80 1 7 5 5 270 1700 1 60 8 05 10 07 17 2 76 1 94 4 7 1260 6 05 1 7 5 8 270 1830 1 60 8 66 13 07 20 3 38 1 82 5 2 1490 7 15 1 7 5 9 270 1840 1 60 8 70 16 07 23 3 62 1 58 5 2 1390 6 65 1 7 6 2 270 1870...

Page 13: ...100 5 03 1 7 5 4 270 1840 1 53 8 35 13 05 18 4 66 0 54 5 2 1520 6 96 1 7 5 5 270 1840 1 53 8 35 16 05 21 4 75 0 45 5 2 1490 6 82 1 7 5 5 270 1840 1 53 8 35 07 07 14 2 00 2 00 4 0 1000 4 58 1 7 5 5 270 1700 1 53 7 70 10 07 17 2 76 1 94 4 7 1260 5 80 1 7 5 8 270 1830 1 53 8 30 13 07 20 3 38 1 82 5 2 1490 6 82 1 7 5 9 270 1840 1 53 8 35 16 07 23 3 62 1 58 5 2 1390 6 37 1 7 6 2 270 1870 1 53 8 50 10 1...

Page 14: ...100 4 80 1 7 5 4 270 1840 1 45 8 00 13 05 18 4 66 0 54 5 2 1520 6 70 1 7 5 5 270 1840 1 45 8 00 16 05 21 4 75 0 45 5 2 1490 6 55 1 7 5 5 270 1840 1 45 8 00 07 07 14 2 00 2 00 4 0 1000 4 40 1 7 5 5 270 1700 1 45 7 40 10 07 17 2 76 1 94 4 7 1260 5 55 1 7 5 8 270 1830 1 45 7 95 13 07 20 3 38 1 82 5 2 1490 6 55 1 7 5 9 270 1840 1 45 8 00 16 07 23 3 62 1 58 5 2 1390 6 10 1 7 6 2 270 1870 1 45 8 15 10 1...

Page 15: ...05 21 4 11 1 49 5 6 1350 6 24 1 3 7 1 240 2100 1 42 9 97 07 07 14 2 70 2 70 5 4 1370 6 34 1 3 7 2 240 2240 1 42 10 64 10 07 17 3 34 2 26 5 6 1390 6 37 1 3 7 2 250 2200 1 49 10 45 13 07 20 3 64 1 96 5 6 1340 6 15 1 3 7 5 250 2250 1 49 10 69 16 07 23 3 76 1 84 5 6 1240 5 71 1 3 7 5 240 2090 1 42 9 93 10 10 20 2 80 2 80 5 6 1350 6 20 1 3 7 3 250 2160 1 49 10 26 13 10 23 3 11 2 49 5 6 1320 6 06 1 3 7 ...

Page 16: ...9 5 6 1350 6 24 1 3 7 1 240 2100 1 36 9 55 07 07 14 2 70 2 70 5 4 1370 6 34 1 3 7 2 240 2240 1 36 10 14 10 07 17 3 34 2 26 5 6 1390 6 37 1 3 7 2 250 2200 1 40 10 00 13 07 20 3 64 1 96 5 6 1340 6 15 1 3 7 5 250 2250 1 40 10 20 16 07 23 3 76 1 84 5 6 1240 5 71 1 3 7 5 240 2090 1 36 9 50 10 10 20 2 80 2 80 5 6 1350 6 20 1 3 7 3 250 2160 1 40 9 80 13 10 23 3 11 2 49 5 6 1320 6 06 1 3 7 5 250 2210 1 40...

Page 17: ...49 5 6 1350 6 24 1 3 7 1 240 2100 1 30 9 14 07 07 14 2 70 2 70 5 4 1370 6 34 1 3 7 2 240 2240 1 30 9 75 10 07 17 3 34 2 26 5 6 1390 6 37 1 3 7 2 250 2200 1 36 9 58 13 07 20 3 64 1 96 5 6 1340 6 15 1 3 7 5 250 2250 1 36 9 80 16 07 23 3 76 1 84 5 6 1240 5 71 1 3 7 5 240 2090 1 30 9 10 10 10 20 2 80 2 80 5 6 1350 6 20 1 3 7 3 250 2160 1 36 9 40 13 10 23 3 11 2 49 5 6 1320 6 06 1 3 7 5 250 2210 1 36 9...

Page 18: ... 2 70 1 50 4 2 1050 5 08 2 4 6 0 390 1890 2 27 8 98 13 05 18 3 70 1 50 5 2 1550 7 42 2 4 6 2 390 1920 2 27 9 10 16 05 21 3 90 1 30 5 2 1590 7 61 2 4 6 2 390 1890 2 27 9 00 07 07 14 2 00 2 00 4 0 970 4 70 2 4 6 0 390 1890 2 27 9 00 10 07 17 2 76 1 94 4 7 1290 6 20 2 4 6 0 390 1880 2 27 8 95 13 07 20 3 38 1 82 5 2 1530 7 31 2 4 6 1 390 1890 2 27 9 00 16 07 23 3 62 1 58 5 2 1420 6 80 2 4 6 2 390 1920...

Page 19: ...05 31 2 69 1 61 0 90 5 2 1190 5 75 2 4 6 5 400 1950 2 32 9 25 13 13 05 31 2 16 2 16 0 88 5 2 1180 5 71 2 4 6 5 400 1950 2 32 9 25 16 13 05 34 2 41 1 98 0 80 5 2 1170 5 66 2 4 6 5 400 1950 2 32 9 25 07 07 07 21 1 74 1 73 1 73 5 2 1220 5 87 2 4 6 5 400 1950 2 32 9 25 10 07 07 24 2 17 1 52 1 52 5 2 1210 5 83 2 4 6 5 400 1950 2 32 9 25 13 07 07 27 2 50 1 35 1 35 5 2 1200 5 78 2 4 6 5 400 1950 2 32 9 2...

Page 20: ...050 4 86 2 4 6 0 390 1890 2 17 8 59 13 05 18 3 70 1 50 5 2 1550 7 09 2 4 6 2 390 1920 2 17 8 72 16 05 21 3 90 1 30 5 2 1590 7 28 2 4 6 2 390 1890 2 17 8 59 07 07 14 2 00 2 00 4 0 970 4 50 2 4 6 0 390 1890 2 17 8 61 10 07 17 2 76 1 94 4 7 1290 5 93 2 4 6 0 390 1880 2 17 8 54 13 07 20 3 38 1 82 5 2 1530 6 99 2 4 6 1 390 1890 2 17 8 59 16 07 23 3 62 1 58 5 2 1420 6 51 2 4 6 2 390 1920 2 17 8 72 10 10...

Page 21: ...2 8 85 16 10 05 31 2 69 1 61 0 90 5 2 1190 5 50 2 4 6 5 400 1950 2 22 8 85 13 13 05 31 2 16 2 16 0 88 5 2 1180 5 46 2 4 6 5 400 1950 2 22 8 85 16 13 05 34 2 41 1 98 0 80 5 2 1170 5 41 2 4 6 5 400 1950 2 22 8 85 07 07 07 21 1 74 1 73 1 73 5 2 1220 5 62 2 4 6 5 400 1950 2 22 8 85 10 07 07 24 2 17 1 52 1 52 5 2 1210 5 57 2 4 6 5 400 1950 2 22 8 85 13 07 07 27 2 50 1 35 1 35 5 2 1200 5 53 2 4 6 5 400 ...

Page 22: ...050 4 65 2 4 6 0 390 1890 2 08 8 23 13 05 18 3 70 1 50 5 2 1550 6 80 2 4 6 2 390 1920 2 08 8 36 16 05 21 3 90 1 30 5 2 1590 6 97 2 4 6 2 390 1890 2 08 8 23 07 07 14 2 00 2 00 4 0 970 4 31 2 4 6 0 390 1890 2 08 8 25 10 07 17 2 76 1 94 4 7 1290 5 68 2 4 6 0 390 1880 2 08 8 19 13 07 20 3 38 1 82 5 2 1530 6 70 2 4 6 1 390 1890 2 08 8 23 16 07 23 3 62 1 58 5 2 1420 6 24 2 4 6 2 390 1920 2 08 8 36 10 10...

Page 23: ...1950 2 13 8 48 16 13 05 34 2 41 1 98 0 80 5 2 1170 5 19 2 4 6 5 400 1950 2 13 8 48 07 07 07 21 1 74 1 73 1 73 5 2 1220 5 38 2 4 6 5 400 1950 2 13 8 48 10 07 07 24 2 17 1 52 1 52 5 2 1210 5 34 2 4 6 5 400 1950 2 13 8 48 13 07 07 27 2 50 1 35 1 35 5 2 1200 5 30 2 4 6 5 400 1950 2 13 8 48 16 07 07 30 2 78 1 21 1 21 5 2 1190 5 26 2 4 6 5 400 1950 2 13 8 48 10 10 07 27 1 93 1 93 1 34 5 2 1200 5 30 2 4 ...

Page 24: ...00 2 00 6 0 1700 8 13 1 9 6 9 390 2250 2 28 10 64 13 05 18 4 86 1 94 6 8 1920 9 15 1 9 7 0 390 2280 2 28 10 79 16 05 21 4 99 1 81 6 8 1920 9 15 1 9 7 1 390 2300 2 28 10 88 07 07 14 2 70 2 70 5 4 1410 6 68 1 9 7 2 370 2300 2 16 10 88 10 07 17 3 94 2 76 6 7 1900 9 01 1 9 7 2 370 2260 2 16 10 69 13 07 20 4 42 2 95 6 8 1920 9 09 1 9 7 5 370 2310 2 16 10 93 16 07 23 4 73 2 07 6 8 1820 8 62 1 9 7 5 350 ...

Page 25: ... 64 16 10 05 31 3 25 2 37 1 18 6 8 1640 7 85 1 9 8 0 400 2250 2 34 10 64 13 13 05 31 2 83 2 83 1 13 6 8 1630 7 80 1 9 8 0 400 2210 2 34 10 45 16 13 05 34 2 99 2 72 1 09 6 8 1620 7 75 1 9 8 0 400 2200 2 34 10 41 07 07 07 21 2 26 2 27 2 27 6 8 1700 8 10 1 9 8 0 350 2320 2 05 10 97 10 07 07 24 2 84 1 98 1 98 6 8 1680 8 01 1 9 8 0 350 2290 2 05 10 83 13 07 07 27 3 26 1 76 1 76 6 8 1650 7 87 1 9 8 0 35...

Page 26: ... 7 78 1 9 6 9 390 2250 2 18 10 20 13 05 18 4 86 1 94 6 8 1920 8 75 1 9 7 0 390 2280 2 18 10 35 16 05 21 4 99 1 81 6 8 1920 8 75 1 9 7 1 390 2300 2 18 10 40 07 07 14 2 70 2 70 5 4 1410 6 39 1 9 7 2 370 2300 2 07 10 40 10 07 17 3 94 2 76 6 7 1900 8 61 1 9 7 2 370 2260 2 07 10 25 13 07 20 4 42 2 95 6 8 1920 8 70 1 9 7 5 370 2310 2 07 10 45 16 07 23 4 73 2 07 6 8 1820 8 24 1 9 7 5 350 2140 1 96 9 70 1...

Page 27: ... 10 20 16 10 05 31 3 25 2 37 1 18 6 8 1640 7 51 1 9 8 0 400 2250 2 24 10 20 13 13 05 31 2 83 2 83 1 13 6 8 1630 7 46 1 9 8 0 400 2210 2 24 10 00 16 13 05 34 2 99 2 72 1 09 6 8 1620 7 41 1 9 8 0 400 2200 2 24 9 95 07 07 07 21 2 26 2 27 2 27 6 8 1700 7 75 1 9 8 0 350 2320 1 96 10 50 10 07 07 24 2 84 1 98 1 98 6 8 1680 7 66 1 9 8 0 350 2290 1 96 10 35 13 07 07 27 3 26 1 76 1 76 6 8 1650 7 53 1 9 8 0 ...

Page 28: ...700 7 45 1 9 6 9 390 2250 2 10 9 75 13 05 18 4 86 1 94 6 8 1920 8 40 1 9 7 0 390 2280 2 10 9 90 16 05 21 4 99 1 81 6 8 1920 8 40 1 9 7 1 390 2300 2 10 10 00 07 07 14 2 70 2 70 5 4 1410 6 10 1 9 7 2 370 2300 1 98 10 00 10 07 17 3 94 2 76 6 7 1900 8 25 1 9 7 2 370 2260 1 98 9 80 13 07 20 4 42 2 95 6 8 1920 8 35 1 9 7 5 370 2310 1 98 10 05 16 07 23 4 73 2 07 6 8 1820 7 90 1 9 7 5 350 2140 1 88 9 30 1...

Page 29: ... 2210 2 15 9 60 16 13 05 34 2 99 2 72 1 09 6 8 1620 7 10 1 9 8 0 400 2200 2 15 9 55 07 07 07 21 2 26 2 27 2 27 6 8 1700 7 45 1 9 8 0 350 2320 1 88 10 05 10 07 07 24 2 84 1 98 1 98 6 8 1680 7 35 1 9 8 0 350 2290 1 88 9 95 13 07 07 27 3 26 1 76 1 76 6 8 1650 7 20 1 9 8 0 350 2250 1 88 9 75 16 07 07 30 3 64 1 59 1 59 6 8 1600 7 00 1 9 8 0 340 2150 1 83 9 35 10 10 07 27 2 52 2 52 1 76 6 8 1660 7 25 1 ...

Page 30: ...e length 5m 3 3 units operating Conditions Indoor DB20Ԩ Indoor air flow High Pipe length 5m 3 3 units operating 220V 230V 240V 220V 230V 240V 220V 230V 240V 220V 230V 240V FILE NO SVM 18020 1 30 0 1 2 3 4 5 6 7 8 9 10 0 10 20 40 30 50 60 70 80 90 100 Condition Indoor DB27oC WB19oC Indoor air flow High Pipe length 5m x 2 2 units operating 220V 230V 240V Inverter output frequency rps Current A 0 1 2...

Page 31: ...s Indoor DB27Ԩ WB19Ԩ Indoor air flow High Pipe length 5m 3 3 units operating Current limited start Current limited start Conditions Indoor DB20Ԩ Indoor air flow High Pipe length 5m 2 2 units operating Conditions Indoor DB20Ԩ Indoor air flow High Pipe length 5m 3 3 units operating FILE NO SVM 18020 1 31 Conditions Indoor DB27Ԩ WB19Ԩ Indoor air flow High Pipe length 5m 2 2 units operating Current li...

Page 32: ...ow High 2 units operating Conditions Indoor DB27Ԩ WB19Ԩ Outdoor DB35Ԩ Indoor air flow High 3 units operating Conditions Indoor DB20Ԩ Outdoor DB7Ԩ DW6Ԩ Indoor air flow High 3 units operating Standard pipe length 15m Standard pipe length 15m Standard pipe length 10m Standard pipe length 10m FILE NO SVM 18020 1 32 Conditions Indoor DB27Ԩ WB19Ԩ Outdoor DB35Ԩ Indoor air flow High 2 units operating Cond...

Page 33: ...es 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 pr...

Page 34: ... joints 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 w...

Page 35: ...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 ...

Page 36: ...e 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 I...

Page 37: ...ge hose Vacuum pump adapter Electronic balance for refrigerant charging Leakage detector Usage Pipe flaring Flaring by conventional flare tool Connection of flare nut Evacuating refrigerant charge run check etc Vacuum evacuating Refrigerant charge Gas leakage check R32 R410A air water heat pump installation Existence of new equipment for R32 Yes Yes Yes Yes Yes Yes Yes Whether conven tional equipm...

Page 38: ... 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 fol...

Page 39: ...or 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 do not use it for refrigerant pipes 1 Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution which may cause a gas l...

Page 40: ...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...

Page 41: ...4 1 Outdoor Unit 4 CONSTRUCTION VIEWS Unit mm RAS 2M14U2AVG E RAS 2M14U2AVG TR RAS 2M18U2AVG E RAS 2M18U2AVG TR RAS 3M18U2AVG E RAS 3M18U2AVG TR FILE NO SVM 18020 2 41 ...

Page 42: ...ce manual TS and TE sensor are not provided on Cooling Only Model 4WAY VALVE COIL is not provided on Cooling Only Model REACTOR L F CAUTION HIGH VOLTAGE The high voltage circuit is incorporated Be careful to do the check service as the electric shock may be caused in case of touching parts on the P C board by hand SWITCH HIGH PRESSURE TS L F TD TO TE PMV Symbol CONDENSER PIPE TEMP SENSOR SUCTION P...

Page 43: ...45 1 3 4 5 6 7 8 9 10 WHI CN300 GRN For D800 refer to the installation and service manual RED YEL CAUTION HIGH VOLTAGE The high voltage circuit is incorporated Be careful to do the check service as the electric shock may be caused in case of touching parts on the P C board by hand TS and TE sensor are not provided on Cooling Only Model 4WAY VALVE COIL is not provided on Cooling Only Model BLK BLK ...

Page 44: ... BLK REACTOR L F SWITCH HIGH PRESSURE COMPRESSOR THERMOSTAT FOR CAUTION HIGH VOLTAGE The high voltage circuit is incorporated Be careful to do the check service as the electric shock may be caused in case of touching parts on the P C board by hand MAIN P C BOARD MCC 1645 WHI CN300 WHI CN704 TS L F TD TO TE PMV Symbol CONDENSER PIPE TEMP SENSOR SUCTION PIPE TEMP SENSOR LINE FILTER DISCHARGE PIPE TE...

Page 45: ...11 Fuse AC250V 3 15A 6 3A 12 Fuse Mounted on P C board MCC 1645 MCC 1665 AC250V 3 15A 13 Outdoor temp sensor TO sensor 10kΩ 25 14 Evaporator temp sensor Te sensor 10kΩ 25 15 Discharge temp sensor Td sensor 50kΩ 25 16 Suction temp sensor Ts sensor 10kΩ 25 17 Temp sensor at A room gas side TGA sensor 10kΩ 25 18 Temp sensor at B room gas side TGB sensor 10kΩ 25 19 Temp sensor at C room gas side TGC s...

Page 46: ...it Refrigerant amount 1 02kg R32 TE TO Propeller fan T2 Temp measurement TD Compressor KTN130D30UFZ High pressure switch TS TGa TGb To B room To B room Pulse motor valve at liquid side dia 1 6 Allowable height difference 10m Allowable pipe length Cross flow fan TA Indoor unit A T1 Temp measurement TC Evaporator RAS 2M14U2AVG E TR NOTE Gas leak check position Refrigerant flow Cooling Refrigerant fl...

Page 47: ...Temp measurement TD Compressor DX136A1T 40N High pressure switch TS TGa TGb To B room To B room Pulse motor valve at liquid side dia 1 6 Allowable height difference 10m Allowable pipe length Cross flow fan TA Indoor unit A T1 Temp measurement TC Evaporator RAS 2M18U2AVG E TR NOTE Gas leak check position Refrigerant flow Cooling Refrigerant flow Heating NOTE You need not add refrigerant if the pipi...

Page 48: ...utdoor unit Refrigerant amount 1 05kg R32 TE TO Propeller fan T2 Temp measurement TGa TGb TGc To C room To B room To C room To B room Pulse motor valve at liquid side dia 1 5 Allowable height difference 10m Allowable pipe length Cross flow fan TA Indoor unit A T1 Temp measurement TC Evaporator RAS 3M18U2AVG E TR NOTE Gas leak check position Refrigerant flow Cooling Refrigerant flow Heating NOTE Yo...

Page 49: ...o of Standard Heat exchanger Compressor Condition operating pressure pipe temperature Indoor fan revolution Indoor Outdoor units A B C P MPa T1 o C T2 o C rps 1 unit 05 2 2 to 2 4 36 to 38 3 to 5 High 34 07 2 2 to 2 4 37 to 39 3 to 5 High 37 10 2 8 to 3 0 46 to 48 2 to 4 High 55 13 2 9 to 3 1 47 to 49 2 to 4 High 60 2 Units 05 05 2 2 to 2 4 34 to 36 2 to 4 High 55 07 05 2 2 to 2 4 34 to 36 2 to 4 ...

Page 50: ... Outdoor Unit RAS 2M18U2AVG E TR Heating Temperature No of Standard Heat exchanger Compressor Condition operating pressure pipe temperature Indoor fan revolution Indoor Outdoor units A B C P MPa T1 o C T2 o C rps 1 unit 05 2 2 to 2 4 39 to 41 3 to 5 High 33 07 2 2 to 2 4 39 to 41 3 to 5 High 37 10 2 9 to 3 1 48 to 50 2 to 4 High 55 13 3 3 to 3 5 52 to 54 1 to 3 High 67 16 3 2 to 3 4 51 to 53 1 to ...

Page 51: ... 12 to 14 45 to 47 High 64 16 16 1 0 to 1 2 14 to 16 45 to 47 High 62 3 Units 05 05 05 0 9 to 1 1 13 to 15 45 to 47 High 62 07 05 05 0 9 to 1 1 13 to 15 45 to 47 High 61 10 05 05 0 9 to 1 1 13 to 15 45 to 47 High 61 13 05 05 0 9 to 1 1 14 to 16 45 to 47 High 61 16 05 05 1 0 to 1 2 15 to 17 45 to 47 High 61 07 07 07 1 0 to 1 2 14 to 16 45 to 47 High 60 10 07 07 1 0 to 1 2 14 to 16 45 to 47 High 60 ...

Page 52: ...o 45 1 to 1 High 91 27 19 35 16 13 2 3 to 2 5 39 to 41 1 to 1 High 90 16 16 2 1 to 2 3 37 to 39 1 to 1 High 90 3 Units 05 05 05 2 2 to 2 4 37 to 39 1 to 1 High 93 07 05 05 2 3 to 2 5 36 to 38 1 to 1 High 93 10 05 05 2 2 to 2 4 36 to 38 1 to 1 High 93 13 05 05 2 1 to 2 3 36 to 38 1 to 1 High 93 16 05 05 2 0 to 2 2 34 to 36 1 to 1 High 93 07 07 07 2 1 to 2 3 36 to 38 1 to 1 High 93 10 07 07 2 1 to 2...

Page 53: ... 220V 60Hz Signal Communication Function select MCC 1665 Control P C B MCC 1645 MAIN P C B ＭＣＵ PWM synthesis function Input current release control IPM over current detect control High power factor correction control Signal Communication with Control P C B Fan motor control Compressor motor control 4 way valve control High pressure switch Noise filter Input current Sensor 4 way valve Relay circu...

Page 54: ... MCC 1665 Control P C B MCC 1645 MAIN P C B ＭＣＵ PWM synthesis function Input current release control IPM over current detect control High power factor correction control Signal Communication with Control P C B Fan motor control Compressor motor control 4 way valve control High pressure switch Case thermo Noise filter Input current Sensor 4 way valve Relay circuit Converter AC DC Inverter DC AC I...

Page 55: ...50Hz 220V 60Hz Signal Communication Function select MCC 1665 Control P C B MCC 1645 MAIN P C B ＭＣＵ PWM synthesis function Input current release control IPM over current detect control High power factor correction control Signal Communication with Control P C B Fan motor control Compressor motor control 4 way valve control High pressure switch Case thermo Noise filter Input current Sensor Convert...

Page 56: ...ode 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...

Page 57: ...ease control 2 5 Winding Coil heating control 3 6 Defrost control Only in heating operation 3 7 Compressor protective control 3 8 Discharge temperature control 4 9 Pulse motor valve PMV control 4 9 3 Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo off Side in Heating Operation 5 10 High pressure switch Compressor case thermostat control 4 9 4 Service switch SW01 SW0 ope...

Page 58: ...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...

Page 59: ... 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...

Page 60: ...revolution the speed of the outdoor fan shown in the table is selected Cooling operation dry operation RAS 2M14U2AVG E TR Compressor revolution rps 20 50 55 56 Outdoor temp sensor To Normal operation To 38 350 630 720 800 28 To 38 350 550 630 720 15 To 28 300 550 550 630 10 To 15 300 470 470 550 5 To 10 300 350 350 470 0 To 5 300 300 300 350 To 0 0 0 300 0 300 0 300 Sleep or quiet To 38 350 550 63...

Page 61: ...nstruction revolutions from the difference between the remote controller setting temperature Ts and the indoor temperature Ta and transmit this to the outdoor unit 2 The outdoor unit receives the instructions from the indoor units and the inverter operates the compressor at the calculated revolutions 3 The compressor operation range in each operating mode is shown in the left table FILE NO SVM 180...

Page 62: ...thin the range which does not exceed the specified value Outdoor temp 10 5 A 11 5 A 11 5 A 11 5 A 16 C 11 C 15 5 C 10 5 C Cooling current release value Heating current release value 8 5 A 45 C 40 C 44 C 39 C 8 5 A RAS 2M18U2AVG E TR Operation No of Compressor Operation No of Compressor mode operating revolution mode operating revolution unit Combination of indoor units kBTU rps unit Combination of...

Page 63: ...tinue 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 i...

Page 64: ...t 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 ...

Page 65: ...mo OFF Thermo ON Indoor fan Operates with setup number of revolution B room thermo OFF B room thermo ON Operated with setup number of revolution 1 Operated with UL or SUL Fan stop T off T off T off T on T on T on UL 1 UL 1 UL 1 Fan stop Fan stop In case which Tc sensor temperature exceeds 55 C in B room the fan stops intermittent operation and starts continuous operation with UL or SUL 1 2 min 3 m...

Page 66: ... validated 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 SW02 and then D805 will turn off 8 Push and hold SW02 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 SW01 and SW02 fo...

Page 67: ...ll 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 initialize...

Page 68: ...emperature sensor TS display Outside temperature sensor TO display The detected value of the gas temperature sensor TG is displayed Refer to table C The detected value of the gas temperature sensor TG is displayed Refer to table C The detected value of the gas temperature sensor TG is displayed Refer to table C The detected value of the indoor suction temperature sensor TA is displayed Refer to ta...

Page 69: ...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 incl...

Page 70: ...d 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 9 320 339...

Page 71: ...lay starts Yes No D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Initial status Push SW01 02 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 SW02 1 time D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Hold time t 5 sec Push SW02 Yes No D800 D801 D802 D803 D804 D...

Page 72: ...s Yes No D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Green Push SW01 8 times Initial status Push SW01 02 at the same time for 5 sec or more Turn on the circuit breaker Push SW02 1 time Push SW01 Support function item Compressor operation frequency Item selecting Information display Refer to 9 4 5 Compressor ON D800 D801 D802 D803 D804 D805 Yellow Yellow Yellow Yellow Yellow Gr...

Page 73: ...een changed to 1 2 UNF 20 threads per inch When purchasing a charge hose be sure to confirm the port size As pressure is high and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur The size of opposite sides of flare nuts have been increased Incidentally a common wrench is used for nominal diameters 1 4 and 3 8 By increasing th...

Page 74: ...arts name Refrigerant piping 1 Putty PVC tapes Parts name Indoor unit abbreviation Liquid side O D Gas side O D 07 10 13 6 35 mm 9 52 mm 16 6 35 mm 12 7 mm Q ty 1 ea 1 ea Rubber cap Water proof Installation manual 1 2 CD ROM Installation manual 1 1 F GAS label 1 Drain nipple 1 1 Part that do not exist in RAS 2M14U2AVG TR RAS 2M18U2AVG TR RAS 3M18U2AVG TR When duct type or cassette type unit is to ...

Page 75: ...ture conditions Outside temp 5 C or lower In COOL mode prepare a duct or wind shield so that it is not affected by the wind Necessary Space for Installation If you need to install the outdoor unit in a location where there are some obstructions or a wall secure sufficient space as shown in the figure below The cooling heating effect may be reduced by 10 600 mm or more 100 mm or more 100 mm or more...

Page 76: ...n the flare nut as much as possible with your fingers then tighten the nut using a torque wrench Be sure to tighten the nut at the specified torque value If you use one outdoor unit for several indoor units of a different class connect the largest one first A then connect the rest in the order B to C Do not remove the flare nuts for any ports you are not going to use for connection Do not leave th...

Page 77: ...se NOTE If a control valve or charge valve is attached to the charge hose leak of R32 refrigerant can be avoided 2 Open the Handle Low of the gauge manifold valve fully then operate the vacuum pump Loosen the flare nut of the at the gas end a little to make sure that air is taken in then tighten the nut If you find air is not taken in make sure that the charge hose is connected to the port s secur...

Page 78: ...oor and the outdoor unit 5 Fix the wiring connections for the power source and each indoor unit securely using a cord clamp 6 Attach the terminal cover and the valve cover Stripping Length of connecting cable for outdoor unit 55 5 5 30 1 L 2 3 5 5 30 55 L N Earth wire Earth wire Power cord Connecting cable Connecting cable Unit B Power cord Connecting cable Unit C Connecting cable Unit A Earth scr...

Page 79: ...a possibility to misjudge if the indoor temperature becomes too low by cooling operation In that case execute the cooling operation for per room and check if the connection is normal Gas Leak Inspection Refer to the Gas Leak Inspection Test run 1 If you perform the test run in summer start running in the cooling mode first to decrease the temperature of the room then run in the heating mode Heatin...

Page 80: ...ng mode The checking procedure cannot be completed if the cooling mode is not operated in every indoor units 4 Hold down SW01 for at least 5 seconds and check that D800 is lighted and D804 light is flashing 1 time sec D800 D801 D802 D803 D804 D805 5 Press SW01 for 1 time Then D804 light is flashing 5 times sec D800 D801 D802 D803 D804 D805 6 Press SW02 for 1 time Then D805 light is flashing 5 time...

Page 81: ...t 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 Table 11 1 No 1 2 3 4 5 6 7 8 Troubleshooting Procedur...

Page 82: ...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...

Page 83: ... 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 ...

Page 84: ...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...

Page 85: ...oom Operation Flashes when 1 Check the sensor TA and connection board 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 i...

Page 86: ...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...

Page 87: ...resistance of compressor winding If circuit is shortage replace the compressor Current detect circuit of All OFF Flashes after Even if trying to operate again all inverter P C board error error is detected operations stop replace inverter 4 times P C board TE sensor The heat All OFF Flashes after 1 Check sensors TE TS and connection exchanger temperature error is detected 2 In case of the sensors ...

Page 88: ...omes 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 Return signal of the outdoor Indoor unit Flashes when 1 Check power supply Rate 10 including unit has been sent when operates error is detected 2 If the air conditioner repeat operates compressor operation s...

Page 89: ...Check sensors TD exceeded 117o C error is detected 2 Check refrigerant amount 4 times 3 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 1 Check installation conditions such as though operation Hz is error is dete...

Page 90: ...using diode Measure voltage at terminal block of the indoor unit between No 2 and No 3 or L2 and S If signal is varied 15 60V continuously replace inverter P C board If signal is not varied replace indoor P C board 4 Check and clean heat exchanger area Indoor and Outdoor unit Instantaneous power failure Some protector hardware of the outdoor unit open circuit of signal Signal circuit of indoor P C...

Page 91: ...ried 2 Confirm that transmission from 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 whi...

Page 92: ... errors some LEDs go on or flash according to the error as described in Error display table Refer to 3 Specific operation display When SW01 or SW02 is pushed and a specific operation is operated some LEDs go on or flash D801 to D804 Yellow LED Display part on MCC 1665 Control PCB Part No Specifications Operation contents D502 D511 D517 Orange LED Indoor Outdoor communication Serial communication s...

Page 93: ...c Display Indoor Description D800 D801 D802 D803 D804 D805 check code YL YL YL YL YL GN Normal operation no error 1C Compressor case thermostat error 21 High pressure switch error 1C Compressor system error 1D Compressor lock 1F Compressor breakdown 14 Driving element short circuit 16 Position detection circuit error 17 Current detection circuit error 1C Communication error between MCU 1A Fan syst...

Page 94: ... NO NO NO NO NO Is PMV under correct conditions Is service valve fully opened Are CN609 of P C board MCC 1645 connection and case thermostat correct Check ourdoor P C B MCC 1645 Defect Replace Short each pins of CN500 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...

Page 95: ...k outdoor P C B MCC 1665 Defect Replace Check wiring construction Ask repair of power supply Check outdoor P C B MCC 1645 Defect Replace Is connection of CN600 on P C B MCC 1665 correct Is resistance value of TD sensor correct Correct connector Sensor error Replace Check outdoor P C B MCC 1665 Defect Replace Is connection of CN602 on P C B MCC 1665 correct Is resistance value of TO sensor correct ...

Page 96: ...t short circuit Check outdoor P C B MCC 1645 and MCC 1665 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...

Page 97: ... 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 1665 and CN806 on P C B MCC 1645 correct Correct connection Check outdoor P C Boards Defect Replace z z Is AC mains voltage correct 198 to 264V Is wire connection correct Compres...

Page 98: ...YES YES NO NO NO NO YES YES Check code 1E Outdoor LED display Check and troubleshooting Item without special mention indicates part of outdoor unit Discharge temp error Does an abnormal overload happen Is AC mains voltage correct 198 to 264V Is wire connection correct Compressor lead Board side Compressor Side Reactor lead Power supply lead Check wiring construction Ask repair of power supply Chec...

Page 99: ...C sensor YES NO OK Error Repair defective position Replace defective part Correct connector Sensor error Replace Check outdoor P C B MCC 1665 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 part of out...

Page 100: ...outdoor 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 conne...

Page 101: ... 11 8 Check conduction by using the tester Disconnect the connector and measure resistance value with the tester Normal temperature Position Red White White Black Black Red Resistance value 33 1 7Ω 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 Check conduction by usin...

Page 102: ...utdoor 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 1645 Outdoor P C board error Fan motor error YES YES NO NO If the resistance value between 1 Red lead 2 White lead 2 White lead 3 Black lead 3 Black l...

Page 103: ... case Varistor protective Fuse F03 250V 3 15A plastic case Fan motor connector CN300 Compressor leads P04 Black P05 White P06 Red Electrolytic capacitors 760μF 400V Jumper for model J800 803 Lead and connecter for Reactor P21 P22 Gray Lead and connecter for Reactor P16 P17 White High pressure switch connector CN501 Green UART communication connector CN806 Blue 4 way valve connector CN704 White RAS...

Page 104: ... connector CN300 Compressor leads P04 Black P05 White P06 Red Electrolytic capacitors 760μF 400V Jumper for model J800 803 Lead and connecter for Reactor P21 P22 Gray Lead and connecter for Reactor P16 P17 White High pressure switch connector CN501 Green UART communication connector CN806 Blue 4 way valve connector CN704 White Case thermo connector RAS 2M18U2AVG E TR RAS 3M18U2AVG E TR Varistor pr...

Page 105: ...ion connector CN802 Blue Indoor Outdoor communication wire protective Fuse F03 250V 3 15A plastic case PMV connector A room CN700 Yellow B room CN701 Red Temp sensor connector TS CN603 White TO CN602 White TE CN601 White TD CN600 White Indoor Outdoor communication connector CN02 Black Connector for display CN805 White Indoor Outdoor communication signal LED D501 D508 Green Outdoor Indoor RAS 2M14U...

Page 106: ...on connector CN802 Blue Indoor Outdoor communication wire protective Fuse F03 250V 3 15A plastic case PMV connector A room CN700 Yellow B room CN701 Red C room CN702 Green CN01 Red Indoor Outdoor communication connector CN02 Black Connector for display CN805 White Indoor Outdoor communication signal LED D501 D508 D515 Green Outdoor Indoor RAS 3M18U2AVG E TR Temp sensor connector TS CN603 White TO ...

Page 107: ... Remove the cord clamp ST2TØ4 10L 2pcs 6 Remove the power supply cord and the indoor outdoor connecting cable from terminal 2 Attachment 1 Attach the power supply cord and the indoor outdoor connecting cable to terminal 2 Attach the cord clamp ST2TØ4 10L 2pcs 3 Attach the terminal cover ST1TØ4 10L 2pcs 4 Attach the water proof cover The water proof cover must be attached without fail in order to p...

Page 108: ...so pull up the top of the front cabinet to remove it 2 Attachment 1 Insert the claw on the front left side into the side into the side cabinet left 2 Hook the bottom part of the front right side onto the concave section of the base plate Insert the claw of the side cabinet right into the square hole in the front cabinet 3 Return the screws that were removed above to their original positions and at...

Page 109: ...the cover under inverter box ST1TØ4 10L 1pc 4 Disconnect the leads connected to the other parts from the inverter assembly Lead connected to compressor 3P white Lead connected to reactor 2P 2 white 5 Cut the banding band 3pcs 6 Remove the black color lead wire ST2TØ4 8L 1pc 7 Remove the duct cover of inverter box ST1TØ4 10L 2pcs 8 Remove the inverter box and inverter cover 9 Remove the power suppl...

Page 110: ... IN 2P Red CN02 Sirial connunication 3P Black CN600 TD sensor 3P white CN601 TE sensor 2P white CN602 TO sensor 2P white CN603 TS sensor 3P white CN604 TGa sensor 2P yellow CN605 TGb sensor 2P red CN606 TGc sensor 2P green only 3M series CN700 PMV A 6P yellow CN701 PMV B 6P red CN702 PMV C 6P green only 3M series CN805 Display P C board 10P white Connected connector of main and control CN806 and C...

Page 111: ... ST1TØ4 10L 1pc fix to base plate Fan motor 1 Perform works 1 of and 2 Remove the flange nut and the propeller fan Flange nut is loosened by turning clockwise To tighten the flange nut turn counterclockwise 3 Disconnect the connector of fan motor from the inverter 4 Remove screws ST2TØ4 20L 4pcs Hold by hands so that the motor does not fall Precautions when assembling the propeller fan Tighten the...

Page 112: ...o the compressor with a burner Take care to keep the 4 way valve away from naked flames Otherwise it may malfunction 7 Remove screws ST1TØ4 10L 1pc fix to heat exchange ST1TØ4 10L 2pcs fix to valve fixing plate 8 Pull upward the refrigeration cycle 9 Remove NUT 3 pcs fixing the compressor Precautions when assembling the compressor Tighten the compressor nuts using a tightening torque of 9 N m Reac...

Page 113: ...roduct All the attaching works have completed Check that all the hooking claws are fixed to the specified positions Electronic expansion valve coil Handling precaution When handling the parts do not pull the leads When removing the coil from the valve body use your hand to secure the body in order to prevent the pipe from being bent out of shape BODY PMV COIL PMV Rotate 180 C 1 Detachment 1 Perfor...

Page 114: ... heat exchanger TGa TGb TGc sensor Gas side pipe temperature sensor Attachment With its leads pointing in the direction shown in the figure and install the sensor onto the straight pipe part of gas side pipe Match the sensor protective tube colors with the pipe marking colors and install the sensors TGa is yellow TGb is red and TGc is green During the installation work and on its completion take c...

Page 115: ... Take care that the electric parts 4 way valve butyle compressor accum tank heat exchanger and etc are not caught by flame Otherwise pperation trouble may occur 1 Attachment Be sure not to burn lead wire of the high pressure switch Adjust the temperature of the hight pressure switch to below 100º C during the brazing Use the wet towel for cooling Use the protective plate for the brazing High press...

Page 116: ...73 70 43T91336 25 43T63319 71 43T91348 30 43T43583 72 43T91337 35 43T41522 73 43T91301 BONNET 9 52 DIA VALVE PACKED 6 35 DIA VALVE PACKED 9 52 DIA BODY PMV COIL PMV 4 WAY VALVE COIL V 3WAY SWITCH PRESSURE REACTOR FAN MOTOR NUT RUBBER CUSHION NUT FLANGE CARTON BOX FIBERBOARD UNDER ASSEMBLY CUSHION PACKING UPPER PE SHEET 36 43T47403 BASE PLATE ASSEMBLY LEFT CABINET RIGHT SIDE CABINET ASSEMBLY UPPER ...

Page 117: ...7001 25 43T63319 70 43T91336 30 43T43583 71 43T91348 35 43T41534 72 43T91337 36 43T47403 73 43T91301 VALVE PACKED 6 35 DIA VALVE PACKED 9 52 DIA BODY PMV COIL PMV 4 WAY VALVE COIL V 3WAY SWITCH PRESSURE REACTOR FAN MOTOR BIMETAL THERMO HOLDER THERMO NUT RUBBER CUSHION NUT FLANGE CARTON BOX FIBERBOARD UNDER ASSEMBLY CUSHION PACKING UPPER PE SHEET 37 43T47404 BASE PLATE ASSEMBLY LEFT CABINET RIGHT S...

Page 118: ...47001 30 43T43583 70 43T91336 35 43T41534 71 43T91348 36 43T47403 72 43T91337 37 43T47404 73 43T91301 VALVE PACKED 6 35 DIA VALVE PACKED 9 52 DIA VALVE PACKED 12 7DIA H4 BODY PMV COIL PMV 4 WAY VALVE COIL V 3WAY SWITCH PRESSURE REACTOR FAN MOTOR BIMETAL THERMO HOLDER THERMO NUT RUBBER CUSHION NUT FLANGE CARTON BOX FIBERBOARD UNDER ASSEMBLY CUSHION PACKING UPPER PE SHEET 38 43T47405 BASE PLATE ASSE...

Page 119: ...317 708 43T58339 720 43T60361 TEMPERATURE SENSOR TC SENSOR TO TEMPERATURE SENSOR SENSOR TEMP SENSOR TEMP HOLDER SENSOR HOLDER SENSOR FUSE 709 43T60426 E 721 43T63316 710 43T60425 722 43T63323 711 43T50352 PCB BOARD ASSY PCB BOARD ASSY BASE PC BORAD BASE PC BOARD PC BOARD ASSY MCC 1646 LED SERV TERMINAL TERMINAL BLOCK REACTOR FUSE FUSE HOLDER TEMPERATURE SENSOR 723 43T63318 HOLDER SENSOR HOLDER SEN...

Page 120: ...63317 708 43T58339 720 43T60361 TEMPERATURE SENSOR TC SENSOR TEMPERATURE SENSOR SENSOR TEMP SENSOR TEMP HOLDER SENSOR HOLDER SENSOR FUSE 709 43T60426 E 721 43T63316 710 43T60425 722 43T63323 711 43T50352 PCB BOARD ASSY PCB BOARD ASSY BASE PC BORAD BASE PC BOARD PC BOARD ASSY MCC 1646 LED SERV TERMINAL TERMINAL BLOCK REACTOR FUSE FUSE HOLDER TEMPERATURE SENSOR 723 43T63318 HOLDER SENSOR HOLDER SENS...

Page 121: ...63317 709 43T60426 E 720 43T60361 TC SENSOR TO TEMPERATURE SENSOR SENSOR TEMP SENSOR TEMP SENSOR TEMP HOLDER SENSOR HOLDER SENSOR FUSE 710 43T60425 721 43T63316 711 43T50352 722 43T63323 712 43T50353 PCB BOARD ASSY PCB BOARD ASSY BASE PC BORAD BASE PC BOARD PC BOARD ASSY MCC 1646 LED SERV TERMINAL REACTOR FUSE FUSE HOLDER TEMPERATURE SENSOR TEMPERATURE SENSOR 723 43T63318 HOLDER SENSOR HOLDER SENS...

Page 122: ...TOSHIBA CARRIER ETHAILANDJ C0 1 LTD ...

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