Toshiba RAS-4M27UAV-E Service Manual Download Page 116

Page: 116 / 152

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Check

code

Outdoor

LED display

Check and troubleshooting

(Item without special mention indicates part of outdoor unit.)

[1C]

(Continued)

[Communication error between MCUs]

[1D]

[Compressor lock]

[1E]

[Discharge temp. error]

Are connections of CN802 on P.C.B MCC-5071

and CN802 on P.C.B MCC-1571 correct?

Correct connection.

Check outdoor P.C. Boards.

Defect • Replace.

YES

Are connections of CN804 on P.C.B MCC-5071

and CN800 on P.C.B MCC-1571 correct?

Correct connection.

Check outdoor P.C. Boards.

Defect • Replace.

YES

Is AC mains voltage correct?

(198 to 264V)

Check wiring construction.

Ask repair of power supply.

Is wire connection correct?

Compressor lead

(Board side, Compressor Side),

Reactor lead, Power supply lead.

Check wire connection

and correct it.

YES

Is compressor under correct condition?

Check outdoor P.C.B MCC-1571.

Defect • Replace.

Is there refrigerant stagnation?

Compressor lock • Replace.

YES

Check outdoor P.C.B MCC-5071.

Defect • Replace.

Does PMV correctly operate?

Check TE, TS sensors and PMV.

Detect • Replace.

YES

Is PMV under correct conditions?

Is connection of CN600 on P.C.B. MCC-5071?

Is resistance value of TD sensor correct?

Is there gas leak?

Is there refrigerant shortage?

Repair defective position.

Recharge refrigerant.

Correct connector.

Sensor error • Replace.

Check outdoor P.C.B MCC-5071.

Defect • Replace.

Repair defective position.

Replace defective part.

Does an abnormal overload happen?

Remove and improve

the cause of overload.

YES

+00A10-023_01EN.book Page 116 Wednesday, April 6, 2011 2:43 PM

Summary of Contents for RAS-4M27UAV-E

Page 1: ...SERVICE MANUAL FILE No A10 023 AIR CONDITIONER SPLIT TYPE Model name RAS M10PKVP E RAS M13PKVP E RAS M16PKVP E RAS M18PKVP E RAS 4M27UAV E PRINTED IN JAPAN Apr 2011 TDOC ...

Page 2: ...n Views 40 5 Wiring Diagram 42 6 Specifications of Electrical Parts 44 7 Refrigerant Cycle Diagram 45 8 Control Block Diagram 52 9 Operation Description 54 10 Installation Procedure 80 11 How to Diagnose the Trouble 99 12 How to Replace the Main Parts 127 13 Exploded Views and Parts List 147 ...

Page 3: ...t R410A air conditioner circuit To prevent mixing of refrigerant or refrigerating machine oil the sizes of connecting sections of charging port on main unit and installation tools are different from those used for the conventional refrigerant units Accordingly special tools are required for the new refrigerant R410A units For connecting pipes use new and clean piping materials with high pressure f...

Page 4: ...ERATION CIRCUIT IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PERSONNEL INJURIES IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE WORK AND THE INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED SUCH...

Page 5: ...u cannot connect only one indoor unit Be sure to connect indoor units in two or more The contents noted in this service manual limit the indoor units to the RAS M10PKVP E RAS M13PKVP E RAS M16PKVP E RAS M18PKVP E For other indoor units that can also be used in combination see the Service Manual of each indoor unit Type Outdoor unit Indoor unit Heat pump RAS 4M27UAV E RAS M10PKVP E RAS M13PKVP E RA...

Page 6: ...90 790 Depth mm 242 242 242 242 Net weight kg 12 12 12 12 Fan motor output W 30 30 30 30 Air flow rate Cooling Heating m h 640 640 690 690 750 750 800 800 Outdoor unit Unit model RAS 4M27UAV E Dimension High mm 890 Width mm 900 Depth mm 320 Net weight kg 69 Compressor Motor output W 2000 Type Twin rotary type with DC inverter variable speed control Model DA220A2F 22L Fan motor output W 60 Air flow...

Page 7: ...5 6 3 640 2040 3 64 9 46 80 98 13 10 3 41 2 49 5 9 1810 8 66 95 3 26 48 63 2 7 6 6 660 2220 3 75 10 30 80 98 16 10 3 94 2 36 6 3 2040 9 76 95 3 09 48 63 2 9 6 9 670 2400 3 81 11 13 80 98 18 10 4 09 2 21 6 3 2040 9 76 95 3 09 48 63 2 9 6 9 670 2400 3 81 11 13 80 98 22 10 4 69 2 11 6 8 2320 11 10 95 2 93 48 63 3 0 7 2 690 2570 3 92 11 92 80 98 24 10 5 22 1 98 7 2 2550 12 20 95 2 82 48 63 3 2 7 5 700...

Page 8: ...7 970 2830 4 90 13 13 90 98 18 18 07 3 29 3 29 1 32 7 9 2440 11 67 95 3 24 48 63 4 1 8 7 970 2830 4 90 13 13 90 98 22 18 07 3 65 3 04 1 22 7 9 2440 11 67 95 3 24 48 63 4 1 8 7 970 2830 4 90 13 13 90 98 24 18 07 3 98 2 80 1 12 7 9 2440 11 67 95 3 24 48 63 4 1 8 7 970 2830 4 90 13 13 90 98 10 10 10 2 53 2 53 2 53 7 6 2400 11 48 95 3 17 48 63 3 8 8 2 950 2720 4 80 12 62 90 98 13 10 10 3 13 2 28 2 28 ...

Page 9: ... 07 07 3 55 1 42 1 42 1 42 7 8 2229 10 67 95 3 50 48 63 4 1 9 1 930 2760 4 70 12 80 90 98 22 07 07 07 4 00 1 33 1 33 1 33 8 0 2286 10 94 95 3 50 48 63 Only SKV series allowed 4 2 9 3 950 2820 4 80 13 08 90 98 24 07 07 07 4 34 1 22 1 22 1 22 8 0 2286 10 94 95 3 50 48 63 Only SKV series allowed 4 2 9 3 950 2820 4 80 13 08 90 98 10 10 07 07 2 18 2 18 1 62 1 62 7 6 2171 10 39 95 3 50 48 63 4 1 8 9 900...

Page 10: ...08 90 98 16 16 13 07 2 45 2 45 2 01 1 09 8 0 2286 10 94 95 3 50 48 63 4 2 9 3 950 2820 4 80 13 08 90 98 18 16 13 07 2 63 2 37 1 95 1 05 8 0 2286 10 94 95 3 50 48 63 4 2 9 3 950 2820 4 80 13 08 90 98 10 10 10 10 1 98 1 98 1 98 1 98 7 9 2257 10 80 95 3 50 48 63 4 1 9 2 940 2790 4 75 12 94 90 98 13 10 10 10 2 48 1 81 1 81 1 81 7 9 2257 10 80 95 3 50 48 63 4 1 9 2 940 2790 4 75 12 94 90 98 16 10 10 10...

Page 11: ...20 3210 1 94 14 89 75 98 16 10 4 57 3 33 7 9 2480 11 87 95 3 19 49 64 1 5 10 1 320 3230 1 94 14 98 75 98 18 10 4 74 3 16 7 9 2480 11 87 95 3 19 49 64 1 5 10 1 320 3230 1 94 14 98 75 98 22 10 5 28 3 02 8 3 2700 12 92 95 3 07 49 64 1 5 10 2 320 3240 1 94 15 03 75 98 24 10 5 76 2 84 8 6 2860 13 68 95 3 01 49 64 1 5 10 2 320 3250 1 94 15 07 75 98 13 13 3 95 3 95 7 9 2480 11 87 95 3 19 49 64 1 5 10 1 3...

Page 12: ... 7 380 2790 2 16 12 94 80 98 22 18 07 3 97 3 40 1 53 8 9 2450 11 72 95 3 63 49 64 2 0 10 7 380 2790 2 16 12 94 80 98 24 18 07 4 29 3 18 1 43 8 9 2450 11 72 95 3 63 49 64 2 0 10 7 380 2790 2 16 12 94 80 98 10 10 10 2 87 2 87 2 87 8 6 2300 11 00 95 3 74 49 64 2 0 10 4 380 2750 2 16 12 76 80 98 13 10 10 3 35 2 68 2 68 8 7 2350 11 24 95 3 70 49 64 2 0 10 5 380 2760 2 16 12 80 80 98 16 10 10 3 54 2 58 ...

Page 13: ... 90 98 22 07 07 07 4 17 1 61 1 61 1 61 9 0 1927 9 22 95 4 67 49 64 Only SKV series allowed 3 0 11 7 500 2600 2 53 12 06 90 98 24 07 07 07 4 50 1 50 1 50 1 50 9 0 1927 9 22 95 4 67 49 64 Only SKV series allowed 3 0 11 7 500 2600 2 53 12 06 90 98 10 10 07 07 2 58 2 58 1 74 1 74 8 6 1850 8 85 95 4 67 49 64 3 0 11 6 480 2580 2 42 11 97 90 98 13 10 07 07 3 03 2 43 1 64 1 64 8 7 1869 8 94 95 4 67 49 64 ...

Page 14: ...27 9 22 95 4 67 49 64 3 0 11 7 500 2600 2 53 12 06 90 98 18 16 13 07 2 81 2 58 2 34 1 27 9 0 1927 9 22 95 4 67 49 64 3 0 11 7 500 2600 2 53 12 06 90 98 10 10 10 10 2 18 2 18 2 18 2 18 8 7 1869 8 94 95 4 67 49 64 3 0 11 6 490 2580 2 47 11 97 90 98 13 10 10 10 2 62 2 10 2 10 2 10 8 9 1908 9 13 95 4 67 49 64 3 0 11 7 500 2600 2 53 12 06 90 98 16 10 10 10 2 83 2 06 2 06 2 06 9 0 1927 9 22 95 4 67 49 6...

Page 15: ... 09 48 63 2 9 6 9 670 2400 3 64 10 65 80 98 18 10 4 09 2 21 6 3 2040 9 34 95 3 09 48 63 2 9 6 9 670 2400 3 64 10 65 80 98 22 10 4 69 2 11 6 8 2320 10 62 95 2 93 48 63 3 0 7 2 690 2570 3 75 11 40 80 98 24 10 5 22 1 98 7 2 2550 11 67 95 2 82 48 63 3 2 7 5 700 2750 3 80 12 20 80 98 13 13 3 15 3 15 6 3 2040 9 34 95 3 09 48 63 2 9 6 9 670 2400 3 64 10 65 80 98 16 13 3 73 3 07 6 8 2320 10 62 95 2 93 48 ...

Page 16: ... 7 970 2830 4 69 12 56 90 98 24 18 07 3 98 2 80 1 12 7 9 2440 11 17 95 3 24 48 63 4 1 8 7 970 2830 4 69 12 56 90 98 10 10 10 2 53 2 53 2 53 7 6 2400 10 98 95 3 17 48 63 3 8 8 2 950 2720 4 59 12 07 90 98 13 10 10 3 13 2 28 2 28 7 7 2410 11 03 95 3 20 48 63 3 9 8 3 960 2740 4 64 12 16 90 98 16 10 10 3 50 2 10 2 10 7 7 2410 11 03 95 3 20 48 63 4 0 8 5 960 2790 4 64 12 38 90 98 18 10 10 3 70 2 00 2 00...

Page 17: ... 950 2820 4 59 12 51 90 98 24 07 07 07 4 34 1 22 1 22 1 22 8 0 2286 10 46 95 3 50 48 63 Only SKV series allowed 4 2 9 3 950 2820 4 59 12 51 90 98 10 10 07 07 2 18 2 18 1 62 1 62 7 6 2171 9 94 95 3 50 48 63 4 1 8 9 900 2700 4 35 11 98 90 98 13 10 07 07 2 74 2 00 1 48 1 48 7 7 2200 10 07 95 3 50 48 63 4 1 9 0 930 2730 4 49 12 11 90 98 16 10 07 07 3 13 1 88 1 39 1 39 7 8 2229 10 20 95 3 50 48 63 4 1 ...

Page 18: ...51 90 98 18 16 13 07 2 63 2 37 1 95 1 05 8 0 2286 10 46 95 3 50 48 63 4 2 9 3 950 2820 4 59 12 51 90 98 10 10 10 10 1 98 1 98 1 98 1 98 7 9 2257 10 33 95 3 50 48 63 4 1 9 2 940 2790 4 54 12 38 90 98 13 10 10 10 2 48 1 81 1 81 1 81 7 9 2257 10 33 95 3 50 48 63 4 1 9 2 940 2790 4 54 12 38 90 98 16 10 10 10 2 86 1 71 1 71 1 71 8 0 2286 10 46 95 3 50 48 63 4 2 9 3 950 2820 4 59 12 51 90 98 18 10 10 10...

Page 19: ... 3 19 49 64 1 5 10 1 320 3230 1 86 14 33 75 98 18 10 4 74 3 16 7 9 2480 11 35 95 3 19 49 64 1 5 10 1 320 3230 1 86 14 33 75 98 22 10 5 28 3 02 8 3 2700 12 36 95 3 07 49 64 1 5 10 2 320 3240 1 86 14 37 75 98 24 10 5 76 2 84 8 6 2860 13 09 95 3 01 49 64 1 5 10 2 320 3250 1 86 14 42 75 98 13 13 3 95 3 95 7 9 2480 11 35 95 3 19 49 64 1 5 10 1 320 3230 1 86 14 33 75 98 16 13 4 35 3 95 8 3 2700 12 36 95...

Page 20: ... 7 380 2790 2 07 12 38 80 98 24 18 07 4 29 3 18 1 43 8 9 2450 11 21 95 3 63 49 64 2 0 10 7 380 2790 2 07 12 38 80 98 10 10 10 2 87 2 87 2 87 8 6 2300 10 53 95 3 74 49 64 2 0 10 4 380 2750 2 07 12 20 80 98 13 10 10 3 35 2 68 2 68 8 7 2350 10 76 95 3 70 49 64 2 0 10 5 380 2760 2 07 12 24 80 98 16 10 10 3 54 2 58 2 58 8 7 2350 10 76 95 3 70 49 64 2 0 10 5 380 2760 2 07 12 24 80 98 18 10 10 3 73 2 49 ...

Page 21: ...3 0 11 7 500 2600 2 42 11 54 90 98 24 07 07 07 4 50 1 50 1 50 1 50 9 0 1927 8 82 95 4 67 49 64 Only SKV series allowed 3 0 11 7 500 2600 2 42 11 54 90 98 10 10 07 07 2 58 2 58 1 74 1 74 8 6 1850 8 47 95 4 67 49 64 3 0 11 6 480 2580 2 32 11 45 90 98 13 10 07 07 3 03 2 43 1 64 1 64 8 7 1869 8 55 95 4 67 49 64 3 0 11 6 490 2580 2 37 11 45 90 98 16 10 07 07 3 26 2 37 1 60 1 60 8 8 1889 8 65 95 4 67 49...

Page 22: ...54 90 98 18 16 13 07 2 81 2 58 2 34 1 27 9 0 1927 8 82 95 4 67 49 64 3 0 11 7 500 2600 2 42 11 54 90 98 10 10 10 10 2 18 2 18 2 18 2 18 8 7 1869 8 55 95 4 67 49 64 3 0 11 6 490 2580 2 37 11 45 90 98 13 10 10 10 2 62 2 10 2 10 2 10 8 9 1908 8 73 95 4 67 49 64 3 0 11 7 500 2600 2 42 11 54 90 98 16 10 10 10 2 83 2 06 2 06 2 06 9 0 1927 8 82 95 4 67 49 64 3 0 11 7 500 2600 2 42 11 54 90 98 18 10 10 10...

Page 23: ... 09 48 63 2 9 6 9 670 2400 3 49 10 20 80 98 18 10 4 09 2 21 6 3 2040 8 95 95 3 09 48 63 2 9 6 9 670 2400 3 49 10 20 80 98 22 10 4 69 2 11 6 8 2320 10 18 95 2 93 48 63 3 0 7 2 690 2570 3 59 10 93 80 98 24 10 5 22 1 98 7 2 2550 11 18 95 2 82 48 63 3 2 7 5 700 2750 3 65 11 69 80 98 13 13 3 15 3 15 6 3 2040 8 95 95 3 09 48 63 2 9 6 9 670 2400 3 49 10 20 80 98 16 13 3 73 3 07 6 8 2320 10 18 95 2 93 48 ...

Page 24: ... 7 970 2830 4 49 12 03 90 98 24 18 07 3 98 2 80 1 12 7 9 2440 10 70 95 3 24 48 63 4 1 8 7 970 2830 4 49 12 03 90 98 10 10 10 2 53 2 53 2 53 7 6 2400 10 53 95 3 17 48 63 3 8 8 2 950 2720 4 40 11 56 90 98 13 10 10 3 13 2 28 2 28 7 7 2410 10 57 95 3 20 48 63 3 9 8 3 960 2740 4 44 11 65 90 98 16 10 10 3 50 2 10 2 10 7 7 2410 10 57 95 3 20 48 63 4 0 8 5 960 2790 4 44 11 86 90 98 18 10 10 3 70 2 00 2 00...

Page 25: ... 3 950 2820 4 40 11 99 90 98 24 07 07 07 4 34 1 22 1 22 1 22 8 0 2286 10 03 95 3 50 48 63 Only SKV series allowed 4 2 9 3 950 2820 4 40 11 99 90 98 10 10 07 07 2 18 2 18 1 62 1 62 7 6 2171 9 52 95 3 50 48 63 4 1 8 9 900 2700 4 17 11 48 90 98 13 10 07 07 2 74 2 00 1 48 1 48 7 7 2200 9 65 95 3 50 48 63 4 1 9 0 930 2730 4 31 11 61 90 98 16 10 07 07 3 13 1 88 1 39 1 39 7 8 2229 9 78 95 3 50 48 63 4 1 ...

Page 26: ... 99 90 98 18 16 13 07 2 63 2 37 1 95 1 05 8 0 2286 10 03 95 3 50 48 63 4 2 9 3 950 2820 4 40 11 99 90 98 10 10 10 10 1 98 1 98 1 98 1 98 7 9 2257 9 90 95 3 50 48 63 4 1 9 2 940 2790 4 35 11 86 90 98 13 10 10 10 2 48 1 81 1 81 1 81 7 9 2257 9 90 95 3 50 48 63 4 1 9 2 940 2790 4 35 11 86 90 98 16 10 10 10 2 86 1 71 1 71 1 71 8 0 2286 10 03 95 3 50 48 63 4 2 9 3 950 2820 4 40 11 99 90 98 18 10 10 10 ...

Page 27: ... 3 19 49 64 1 5 10 1 320 3230 1 78 13 73 75 98 18 10 4 74 3 16 7 9 2480 10 88 95 3 19 49 64 1 5 10 1 320 3230 1 78 13 73 75 98 22 10 5 28 3 02 8 3 2700 11 84 95 3 07 49 64 1 5 10 2 320 3240 1 78 13 78 75 98 24 10 5 76 2 84 8 6 2860 12 54 95 3 01 49 64 1 5 10 2 320 3250 1 78 13 82 75 98 13 13 3 95 3 95 7 9 2480 10 88 95 3 19 49 64 1 5 10 1 320 3230 1 78 13 73 75 98 16 13 4 35 3 95 8 3 2700 11 84 95...

Page 28: ... 7 380 2790 1 98 11 86 80 98 24 18 07 4 29 3 18 1 43 8 9 2450 10 75 95 3 63 49 64 2 0 10 7 380 2790 1 98 11 86 80 98 10 10 10 2 87 2 87 2 87 8 6 2300 10 09 95 3 74 49 64 2 0 10 4 380 2750 1 98 11 69 80 98 13 10 10 3 35 2 68 2 68 8 7 2350 10 31 95 3 70 49 64 2 0 10 5 380 2760 1 98 11 73 80 98 16 10 10 3 54 2 58 2 58 8 7 2350 10 31 95 3 70 49 64 2 0 10 5 380 2760 1 98 11 73 80 98 18 10 10 3 73 2 49 ...

Page 29: ...3 0 11 7 500 2600 2 31 11 05 90 98 24 07 07 07 4 50 1 50 1 50 1 50 9 0 1927 8 45 95 4 67 49 64 Only SKV series allowed 3 0 11 7 500 2600 2 31 11 05 90 98 10 10 07 07 2 58 2 58 1 74 1 74 8 6 1850 8 11 95 4 67 49 64 3 0 11 6 480 2580 2 22 10 97 90 98 13 10 07 07 3 03 2 43 1 64 1 64 8 7 1869 8 20 95 4 67 49 64 3 0 11 6 490 2580 2 27 10 97 90 98 16 10 07 07 3 26 2 37 1 60 1 60 8 8 1889 8 29 95 4 67 49...

Page 30: ...05 90 98 18 16 13 07 2 81 2 58 2 34 1 27 9 0 1927 8 45 95 4 67 49 64 3 0 11 7 500 2600 2 31 11 05 90 98 10 10 10 10 2 18 2 18 2 18 2 18 8 7 1869 8 20 95 4 67 49 64 3 0 11 6 490 2580 2 27 10 97 90 98 13 10 10 10 2 62 2 10 2 10 2 10 8 9 1908 8 37 95 4 67 49 64 3 0 11 7 500 2600 2 31 11 05 90 98 16 10 10 10 2 83 2 06 2 06 2 06 9 0 1927 8 45 95 4 67 49 64 3 0 11 7 500 2600 2 31 11 05 90 98 18 10 10 10...

Page 31: ... C 50 60 70 80 90 100 110 32 33 34 35 36 37 38 39 40 41 42 43 44 Outdoor temp C Cooling capacity ratio Conditions Indoor DB27 C WB19 C Indoor air flow High Pipe length 5m 5 5 units operating Current limited start 50 60 70 80 90 100 110 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 Outdoor temp C Heating capacity ratio Conditions Indoor DB20 C Air flow High Pipe length 5m 5 5 units operating g n i t ...

Page 32: ... pressure in the refrigeration cycle may become abnormally high so that a rupture or personal injury may be caused 5 After completion of installation work check to make sure that there is no refrigeration gas leakage If the refrigerant gas leaks into the room coming into contact with fire in the fan driven heater space heater etc a poisonous gas may occur 6 When an air conditioning system charged ...

Page 33: ...ure that water or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed air water heat pump is used and that refrigerant does not leak When using lubricating oils in the piping processing use such lubricating oils whose water content has been removed When stored be sure to seal the container with an airtight cap or any other cover 1 Flare processing pr...

Page 34: ...r diameter mm Thickness mm A mm Flare tool for R410A clutch type Conventional flare tool Clutch type Wing nut type 1 4 6 35 0 8 0 to 0 5 1 0 to 1 5 1 5 to 2 0 3 8 9 52 0 8 0 to 0 5 1 0 to 1 5 1 5 to 2 0 1 2 12 70 0 8 0 to 0 5 1 0 to 1 5 2 0 to 2 5 5 8 15 88 1 0 0 to 0 5 1 0 to 1 5 2 0 to 2 5 Nominal diameter Outer diameter mm Thickness mm A mm Flare tool for R22 clutch type Conventional flare tool...

Page 35: ...s Table 3 2 7 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the manufacturer If any other oil is used the lubricating oils may deteriorate and cause the compressor to burn out Table 3 2 7 Tightening torque of flare for R410A Reference values Nominal diameter Outer diameter mm Thickness mm Dimension mm Flare nut width mm A B C D 1 4 6 35 0 8 9 0...

Page 36: ... heat pump installation Conventional air water heat pump installation Existence of new equipment for R410A Whether conventional equipment can be used Whether new equipment can be used with conventional refrigerant 1 Flare tool Pipe flaring Yes Note 1 Yes 2 Copper pipe gauge for adjusting projection margin Flaring by conventional flare tool Yes Note 1 Note 1 3 Torque wrench For Ø12 7 Connection of ...

Page 37: ...utdoor unit s gas side Recover the refrigerant and check no refrigerant remains in the equipment For refrigerant charging see the figure below Connect the charge hose to the vacuum pump adapter Open fully both packed valves at liquid and gas sides Place the handle of the gauge manifold Low in the fully opened position and turn on the vacuum pump s power switch Then evacuating the refrigerant in th...

Page 38: ...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 39: ...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 interior during brazing it is effective to proceed with brazing while letting dry Nitroge...

Page 40: ...section Installation plate hanging section Name Plate Guard wire From wall to air discharge length Front panel Plasma ion charger Air filter Piping port from left right sides Knockout system Knockout system Piping port from left right sides At the time of a stop Moving panel At the time of operation Stud bolt hole For dia 8 to dia 10 Minimum distance to wall 130 or more Recommend 180 or more Drain...

Page 41: ... 41 4 2 Outdoor Unit RAS 4M27UAV E E ...

Page 42: ... 18 8 19 9 21 2 22 22 23 23 24 24 9 8 7 6 5 4 3 2 1 5 5 1 1 BLK BLK 1 BLK BLK BLK WHI WHI RED WHI BLU BLU BLU WHI YEL YEL WHI YEL RED WHI RED BLK 1 3 4 6 1 2 1 3 2 1 5 4 3 2 1 5 4 CN221 WHI 10 0 10 0 3 2 1 5 1 1 2 4 3 2 1 2 1 2 1 1 1 1 3 2 1 YEL Indoor terminal block Sheet metal GRN YEL Air purifier electrode Power supply Micro SW Power supply circuit TC TCj Thermo sensor TA Humidity sensor Main P...

Page 43: ... FAN MOTOR 4WV MS 3 3 3 CN701 WHI CN202 4 1 MCC 1436 CN201 CN200 F01 250V T3 15A F100 CIRCUIT SUPPLY POWER 2 1 1 2 P09 YEL TGA t SCREW EARTH GAS SIDE PIPE TEMP SENSOR A D CONDENSER PIPE TEMP SENSOR SUCTION PIPE TEMP SENSOR BLU BLUE BLK BLACK COLOR IDENTIFICATION RED RED LINE FILTER GRN GREEN WHI WHITE YEL YELLOW OUTDOOR TEMP SENSOR PULSE MOTOR VALVE INDOOR Part name DISCHARGE PIPE TEMP SENSOR TO U...

Page 44: ...or CH 56 5 8 mH 18 5 A 4 Reactor CH 76 9 9 mH 1 A 5 4 way valve coil VHV H AC 200 240 V 6 PMV coil UKV A DC 12 V 7 P C board Main PCB MP24Z4N AC 220 240 V 8 P C board Control PCB MCC 1571 AC 220 240 V 9 P C board Fan motor connection MCC 5071 AC 220 240 V 10 Fuse Mounted on P C board MCC 1571 AC 250 V 25 A 11 Fuse Mounted on P C board MCC 1571 AC 250 V 10 A 12 Fuse Mounted on P C board MCC 1571 MC...

Page 45: ...efrigerant if the piping length is 40 m or less If the length exceeds 41 m add 20 g of refrigerant per 1 meter over Connection of only one indoor unit is unavailable Two or more indoor units should be connected 2 40kg 3m Gas leak check position Refrigerant flow Cooling Refrigerant flow Heating NOTE 70m 1500cc DA220A2F 22L NOTE ...

Page 46: ...1 to 53 High High 62 2 24 13 0 7 to 0 9 9 to 11 51 to 53 High High 62 2 16 16 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 18 16 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 22 16 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 24 16 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 18 18 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 22 18 0 7 to 0 9 9 to 11 52 to 54 High High 62 2 24 18 0 7 to 0 9 9 to 11 52 to 54 ...

Page 47: ...4 13 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 16 16 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 18 16 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 22 16 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 24 16 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 18 18 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 22 18 13 0 8 to 1 0 11 to 13 51 to 53 High High 59 8 16 16 16 0 8 to 1 0 11 to 13 5...

Page 48: ... High High 62 2 13 13 13 07 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 16 13 13 07 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 18 13 13 07 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 16 16 13 07 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 18 16 13 07 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 10 10 10 10 1 0 to 1 2 15 to 17 51 to 53 High High 62 2 13 10 10 10 1 0 to 1 2 15 to 17 51 to 53 High Hi...

Page 49: ... 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 16 16 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 18 16 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 22 16 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 24 16 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 18 18 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 22 18 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 24 18 3 1 to 3 3 48 to 50 1 to 1 High High 71 2 3 units 07 07 07 2 3 ...

Page 50: ...2 5 to 2 7 37 to 39 2 to 0 High High 73 0 18 16 13 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 22 16 13 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 24 16 13 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 18 18 13 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 22 18 13 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 16 16 16 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 22 16 16 2 5 to 2 7 37 to 39 2 to 0 High High 73 0 4...

Page 51: ...2 to 2 4 33 to 35 2 to 0 High High 73 0 16 13 13 07 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 18 13 13 07 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 16 16 13 07 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 18 16 13 07 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 10 10 10 10 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 13 10 10 10 2 2 to 2 4 33 to 35 2 to 0 High High 73 0 16 10 10 10 2 2 to 2 4 33 to 35 2 to...

Page 52: ...rcuit Power Supply Circuit Converter D C circuit Infrared Rays 36 7kHz Remote Controller Operation START STOP Thermo Setting Fan Speed Selection ON TIMER Setting OFF TIMER Setting Louver AUTO Swing Louver Direction Setting Hi POWER Operation Mode Selection AUTO COOL DRY HEAT REMOTE CONTROLLER SLEEP Mode Air Purifier Heat Exchanger Sensor Tc Heat Exchanger Sensor Tcj Humidity sensor Room Temperatur...

Page 53: ...wer module Signal communication Noise filter High power factor correction circuit Converter AC DC Gate drive circuit Inverter DC AC Output current sensor Output current sensor Input current sensor D unit serial signal communication circuit C unit serial signal communication circuit B unit serial signal communication circuit A unit serial signal communication circuit Clock frequency oscillator circ...

Page 54: ...ration 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 Detection of inverter input current and current release operation Over current detection and prevention operation to IGBT module ...

Page 55: ...g 66 11 SLEEP MODE operation 67 12 Temporary operation 68 13 Air purifying control 68 1 Purpose 68 2 Description 69 3 Operation 69 14 Discharge temperature control 70 15 Pulse motor valve PMV control 70 16 Clean operation 71 17 Clean operation cancel 72 18 Select switch on remote controller 73 19 Set temperature correction 74 20 Various setting on outdoor unit Power save Cooking only etc 74 9 3 Au...

Page 56: ... OFF Air conditioner Air purifier Operation select COOL HEAT AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH Sleep mode ON timer setup OFF timer setup High power Indoor unit control Command signal generating function of indoor unit operation Calculation function temperature calculation Activation compensation function of indoor fan Cold draft preventive f...

Page 57: ...d first Cooling dry Cooling dry Cooling Pushed last Cooling dry Cooling dry 2 Pushed first Heating Heating Heating Pushed last Heating Heating 3 Pushed first Fan solo air purification Fan solo air purification Stopped Pushed last Fan solo air purification Fan solo air purification 4 Pushed first Fan solo air purification Fan solo air purification Cooling Pushed last Cooling dry Cooling dry 5 Pushe...

Page 58: ...ntinues for 15 minutes the room temperature after selecting an operation mode COOL HEAT reselect an operation mode 5 DRY operation DRY operation is performed according to the difference between room temperature and the setup temperature as shown below In DRY operation fan speed is controlled in order to prevent lowering of the room temperature 1 Detects the room temperature Ta when the DRY operati...

Page 59: ...cription Symbols UH Ultra High H High M Medium M Medium L Low L Low L Low UL Ultra Low SUL Super Ultra Low 2 5 Ta C 2 0 1 5 1 0 0 5 Tsc a b c d e M WC 3 4 5 L W7 Fan speed H WD 6 7 8 L W8 Hi Power L L M M H W8 L M 2 WC M H 2 WE Indication Hi Power W7 L M 2 WA M H 2 WD Fan speed Fan speed setup COOL ON AUTO MANUAL 3 Fan speed M L 3 4 L 4 Fan speed M L 2 4 L 5 Fan speed M L 1 4 L 6 Fan speed H L 3 4...

Page 60: ...an speed MANUAL in starting Fan speed AUTO in stability Fan speed AUTO in starting L L M M H W8 L M 2 WB M H 2 WE Indication Fan speed W9 L M 2 WD M H 2 WF Hi Power YES NO Min air flow rate control MANUAL Tc 52 51 42 41 Limited to Min WD tap Fan speed TC 40 a 10 WD W8 W8 No limit TC Fan speed setup AUTO HEAT ON Fig 3 Fig 4 Fig 5 Cold draft preventive control Fig 6 No limitation while fan speed MAN...

Page 61: ... level RAS M10PKVP E RAS M13PKVP E RAS M16PKVP E RAS M18PKVP E Fan speed rpm Air flow rate m3 h Fan speed rpm Air flow rate m3 h Fan speed rpm Air flow rate m3 h Fan speed rpm Air flow rate m3 h WF 1140 640 1200 690 1280 750 1390 805 WE UH 1140 640 1200 690 1280 750 1390 805 WD H 1070 590 1100 610 1180 670 1290 730 WC M 980 530 1010 550 1090 610 1180 655 WB 900 470 930 490 980 530 1070 575 WA M 85...

Page 62: ...450 rpm 550 rpm 600 rpm 600 rpm Sleep operation TO 38 C 450 rpm 550 rpm 600 rpm 600 rpm TO 38 C 450 rpm 550 rpm 550 rpm 600 rpm TO is abnormal 450 rpm 550 rpm 600 rpm 600 rpm TO Outdoor temp sensor Heating operation Compressor revolution rps 20 3 33 5 33 5 Outdoor temp sensor TO TO 10 C 500 rpm 550 rpm 550 rpm TO 10 C 500 rpm 550 rpm 600 rpm TO 5 C 550 rpm 600 rpm 650 rpm Sleep operation TO 10 C 5...

Page 63: ...his function reduces the compressor speed and controls speed up to the closest one commanded from the indoor unit within the range which does not exceed the specified value Item Operation flow and applicable data etc Description Compressor Inverter Outdoor unit Indoor unit A Indoor unit B Indoor unit C Indoor unit D Operation mode No of operating unit Combination of indoor units Compressor revolut...

Page 64: ...condensation temperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the specified value 1 When temperature of the indoor heat exchanger rises in the range from 52 C to 55 C the compressor speed is kept Q zone When temperature of the indoor heat exchanger drops in the range from 48 C to under 55 C the compressor speed is kept Q zone 2 When temperatur...

Page 65: ...peration of the compressor for approx 60 seconds 2 Invert ON 4 way valve approx 40 seconds after stop of the compressor 3 The outdoor fan starts rotating at the same time when the compressor starts The minimum value of Te sensor 10 to 15 minutes after start of operation is stored in memory as Te0 and Te1 10 C Te1 10 C 9 Compressor protective control 1 This control purposes to raise the operation f...

Page 66: ...g Vertical and Horizontal swing Stop swinging Swing operation is performed in width 35 with the stop position as the centre If the stop position exceeds either upper or lower limit position swing operation is performed in width 35 from the limit which the stop position exceeded Item Operation flow and applicable data etc Description Horizontal 0 Cooling operation AUTO COOL Powerful Initial setting...

Page 67: ...n in the left figure 2 The set temperature increased 0 5 C per hour up to 2 C starting from the set temperature when SLEEP MODE has been received Heating operation Heating operation 1 The indoor fan speed is controlled within W7 as maximum value 2 The louver position is set horizontally Standard cooling position when the room temperature comes close to the set temperature or when 25 minutes passed...

Page 68: ... the operation of air conditioner air purifier an operation of air conditioner air purifier starts by pushing AC button on the remote controller Operation of air conditioner air purifier is stored in memory PURE indicator Orange ON Push RESET button Did you push RESET button for 3 seconds or more Did you push RESET button for 10 seconds or more Switch to AUTO RESTART control YES YES NO NO NO YES T...

Page 69: ...s up determine the error and turn on the PURE indicator Orange 3 The FILTER indicator keeps lighting even if the operation is stopped by the remote controller The timer is stored in memory of the microcomputer and the operation time is cleared by filter RESET button on the indoor unit FILTER indicator goes off 1 Reset by RESET button 2 Reset by RESET button or by the stop direction from the remote...

Page 70: ...nction also controls the open degree of valve with an expansion valve with pulse motor 1 When starting the operation move the valve once until it fits to the stopper Initialize In this time Click sound may be heard 2 Adjust the open degree of valve by super heat amount 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 tem...

Page 71: ... period of the clean operation is determined by the duration of the operation performed prior to the reception of the stop code 3 After the clean operation has been performed for the specified period the unit stops operating During clean operations The louver opens slightly The indoor fan operates continuously at a speed of 450 rpm Clean operation times Clean operation times To stop an ongoing cle...

Page 72: ...l therefore the RESET button can not be used for the selection Set Cancel of AUTO RESTART function Refer to 9 3 Auto Restart Function Add J231 of the wireless unit P C board assembly This cancels the auto restart function Hold down the RESET button on the indoor unit for at least 3 seconds but not more than 10 seconds The indoor unit s buzzer emits three beeps This completes the clean operation ca...

Page 73: ...o be careful not to let plastic scraps jumper wire cuttings or other debris enter the inside of the remote controller 3 Insert the batteries B appears in the remote controller display Even after the jumper wire has been cut switching between A and B is still possible by pushing the CHECK button and FIX button together The A or B setting which was switched by pushing the CHECK button and FIX 5 butt...

Page 74: ...04 J805 HEAT shift value 2 4 2 0 Caution Set the switch before turning on the power supply Function Setting position Control contents Power save setup Turn the switch to ON when using the power save function Cooling only setup When using the air conditioner as a cooling only conditioner turn the switch to ON If the heating mode is selected by remote controll outdoor unit will remain stop If mixed ...

Page 75: ...n NOTE After restarting the air conditioner by the AUTO RESTART OPERATION the louver swing AUTO operation doesn t resume While the PURE indicator Orange is on the RESET button has the function of air purifier reset button Operation Motions Push RESET button for more than 3 seconds Less than 10 seconds The unit is on standby Push RESET button for more than 3 seconds The unit starts to operate The g...

Page 76: ...ller even if it stopped due to a power failure Operation Motions Push RESET button for more than 3 seconds Less than 10 seconds The unit is on standby Push RESET button for more than 3 seconds The unit starts to operate The green indicator is on After approx 3 seconds The unit beeps 3 times and continues to operate If the unit is not required to operate at this time push RESET button once more or ...

Page 77: ...on to change the clock and ON timer times To move up the time push of the ON button To move down the time push of the ON button 9 OFF timer button OFF Use this button to change the OFF timer times To move up the time push of the OFF button To move down the time push of the OFF button 10 Reserve button SET Push this button to store the time settings A receiving beep is heard 11 Cancel button CLR Pu...

Page 78: ...ng TIMER operation 7 Hi POWER indicator Indicates when the Hi POWER operation starts Push the Hi POWER button to start and push it again to stop the operation 8 MEMORY indicator Flashes for 3 seconds when the MEMO button is pushed during operation The mark is shown when holding down the button for 3 seconds or more while the mark is flashing Push another button to turn off the mark 9 SLEEP mode in...

Page 79: ... off occurred the following operations start Refer to the figure below 1 The indoor unit of the room A room in which thermo off did not occur starts a continuous operation with the setup number of revolution 2 The indoor unit of the room B room in which thermo off occurred starts intermittent operation of the indoor fan The indoor fan operates with number of revolution of UL or SUL Fan ON time is ...

Page 80: ...right Rear left Bottom left Left 8 mm thick heat resisting polyethylene foam The indoor unit shall be installed so that the top of the indoor unit is positioned at least 2 m high Also avoid putting anything on the top of the indoor unit Hook Hook Hook Hook 70 mm or more 160 mm or more 180 mm or more 1 Installation plate 5 Mounting screw 2 Wireless remote controller 2 Wireless remote controller 4 R...

Page 81: ... 1 Part No Part name Q ty Part No Part name Q ty Part No Part name Q ty 1 Installation plate 1 4 Remote controller holder 1 7 Drain nipple 1 2 Wireless remote controller 1 5 Mounting screw Ø4 25L 7 8 Water proof rubber cap 5 3 Battery 2 6 Remote controller holder mounting screw Ø3 1 16L 2 Parts marked with asterisk are packaged with the outdoor unit Others This model is not equipped with an extens...

Page 82: ...ioner New tools for R410A Applicable to R22 model Changes Gauge manifold As pressure is high it is impossible to measure by means of conventional gauge In order to prevent any other refrigerant from being charged each port diameter has been changed Charge hose In order to increase pressure resisting strength hose materials and port size have been changed to 1 2 UNF 20 threads per inch When purchas...

Page 83: ... Drilling and Mounting Installation Plate Drilling When installing the refrigerant pipes from the rear Fig 10 3 2 1 Decide the installation plate mounting position on the wall 2 Mark the corresponding pipe hole wall positions according to the positioning marks on the installation plate 3 Drill the pipe holes Dia 65 mm or Dia 80 mm slightly slanted downward to the outside NOTE When drilling into a ...

Page 84: ...re to securely install the unit may result in personal injury and or property damage if the unit falls In case of block brick concrete or similar type walls drill 5 mm dia holes in the wall Insert clip anchors for the 5 mounting screws NOTE Install the installation plate using between 4 to 6 mounting screws making sure all four corners are secure 10 3 3 Electrical Work 1 The supply voltage must be...

Page 85: ...tightly with screws Make a loop with the earth wire under the terminal block and secure it with the earth screw 6 Tightening torque 1 2 N m 0 12 kgf m 7 Secure the connecting cable with the cord clamp 8 Attach the terminal cover and moving panel on the indoor unit CAUTION Be sure to refer to the wiring system diagram labelled inside the front panel Check local electrical regulations for any specif...

Page 86: ... drain cap Insert hexagonal wrench 4 mm 5 Firmly insert drain cap Fig 10 3 14 6 Attach the drain hose Insert the drain hose firmly until the connector contacts with the insulation then secure it in place using the original screw Always use the original screw that secured the drain hose to the unit If using a different screw may cause water to leak CAUTION Securely insert the drain hose and drain c...

Page 87: ... Bind the auxiliary pipes two and connecting cable with facing tape tightly In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape Fig 10 3 18 Carefully arrange the pipes so that none of the pipes stick out of the rear plate of the indoor unit Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wou...

Page 88: ... NOTE Hole should be made at a slight downward slant on the outdoor side Fig 10 3 21 2 Put water in the drain pan and make sure that the water is being drained outside 3 When connecting extension drain hose insulate the connection part of extension drain hose with shield pipe Fig 10 3 22 CAUTION Install the drain pipe for proper drainage Improper drainage can result in water dripping inside the ro...

Page 89: ... without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always to a strong wind like a coast or on a high story of a building secure the normal fan operation using a duct or a wind shield 3 Especially in windy area install the unit to prevent the admission of wind 4 Installation in the following places may result in trouble Do not install the unit in ...

Page 90: ... to 70 m Additional 20 g of refrigerant Per every 1 m Minimum piping length A or B or C or D 3 m or more Maximum indoor piping length A or B or C or D 25 m or less Maximum piping height difference A or B or C or D 15 m or less Maximum piping height difference between 2 units 15 m or less Fig 10 4 5 4 Connect 2 or more indoor units for heat pump 5 If the outdoor units is to be mounted on a wall mak...

Page 91: ... the flare pipes which connect the outdoor unit and indoor unit with the specified tightening torque using a torque wrench If any flare pipe is incorrectly connected it may cause not only a gas leakage but also trouble in the refrigeration cycle Fig 10 4 9 Outer dia of copper pipe Tightening torque Ø6 35 mm 14 to 18 1 4 to 1 8 kgf m Ø9 52 mm 33 to 42 3 3 to 4 2 kgf m Ø12 7 mm 50 to 62 5 0 to 6 2 k...

Page 92: ...oil of the vacuum pump enters into the air conditioner which adopts R410A a trouble of the refrigeration cycle may be caused 1 Connect the charge hose from the manifold valve to the service port of the gas side packed valve 2 Connect the charge hose to the port of vacuum pump 3 Open fully the low pressure side handle of the gauge manifold valve 4 Operate the vacuum pump to start for evacuating Per...

Page 93: ...cause some electrical parts burn out Be sure to use the cord clamps specified positions with attached to the product Do not damage or scratch the conductive core and inner insulator of power and inter connecting cables when peeling them Be sure to comply with local cords on running the wire from outdoor unit to indoor unit size of wire and wiring method etc Use the power cord and Inter connecting ...

Page 94: ... sure that the wiring and piping for each room have the same alphabetical codes A B C D Connect and secure the power cord Use the power cord cables with thickness type and protective devices specified in this manual Insulate the unused cords conductors with PVC tape 1 Detach the front panel of the outdoor unit Do not remove the air discharge grille 2 Turn on the circuit breaker to supply electrici...

Page 95: ...rouble in unit A and D Trouble in unit A Trouble in unit B and C Trouble in unit B and D Trouble in unit B Trouble in unit C and D Trouble in unit C Trouble in unit D Trouble in unit A B and C Trouble in unit A B and D Trouble in unit A B Trouble in unit A C and D Trouble in unit A C Trouble in unit A D Trouble in unit B C and D Trouble in unit B C Trouble in unit B D Trouble in unit C D Trouble i...

Page 96: ...e This can be prevented by changing one of the indoor units and remote controllers to setting B the default setting for both units is A If the indoor unit and remote controller settings are different the remote controller signal is not accepted Setting the remote controller 1 Slide open the remote controller cover and remove the batteries 2 Cut the jumper wire inside the battery compartment using ...

Page 97: ...m 4 Close the moving panel to remove the clips on the top side as shown below Push your finger down on the clip on the front panel top and lift up the panel back edge so that the clip is released 5 locations Fig 10 6 3 10 6 2 Removing the Moving Panel 1 Open the moving panel and support the moving panel by the panel support on the right side 2 Remove the lead wire cover on the right side 1 screw F...

Page 98: ...side joint first before pushing in the left side joint 10 6 5 Attaching the Vertical Air Flow Louvres 1 Attach the vertical air flow louvres by inserting the connector joints in the order of left right and centre 2 Secure the horizontal air flow louvres to the connector joints Fig 10 6 12 3 After pushing in the connector joints align the positions of the connector joints and connectors 4 Push the ...

Page 99: ...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...

Page 100: ...timer operates 3 In DRY and SLEEP MODE FAN air flow display does not change even though FAN air flow select button is operated The air flow indication is fixed to AUTO 4 Increasing of compressor motor speed stops approx 30 seconds after operation started and then compressor motor speed increases again approx 30 seconds after For smooth operation of the compressor the compressor motor speed is rest...

Page 101: ... 3 1 NOTE The 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 Flas...

Page 102: ...e remote controller Push 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...

Page 103: ... board Being out of place disconnection short circuit or migration of heat exchanger sensor TCj sensor Operation continues Displayed when error is detected 1 Check heat exchanger sensor 2 When heat exchanger sensor is normal check P C board Lock of indoor fan or trouble on the indoor fan circuit All off Displayed when error is detected 1 Check the motor 2 When the motor is normal check P C board N...

Page 104: ...on outdoor P C board All off Displayed when error is detected Check 6 serial LED When 20 seconds passed after start up position detect circuit error occurred Replace compressor Trouble on P M V Check gas side temp sensor TG Check P C board Check communication wire between outdoor P C board Check outdoor P C board Others including compressor Return serial signal has been sent when operation started...

Page 105: ...2V or 5V indicated on rear of indoor control board normal Does transmission mark on remote controller flash normally and is its signal transmitted properly Is DC310 340V supplied between CN10 1 3 Does fan motor connector between CN301 1 3 short circuit Item by symptoms Operation Check Item Considerable principle cause Measures Parts R01 R02 DB01 C01 C03 IC01 and T101 are defective Remote controlle...

Page 106: ...ing operation At this time is it possible to detect DC 1V or more between 5 and 3 of motor connector CN301 Is it possible to detect DC 1V or more between 5 and 3 of motor connector CN301 Is it possible to detect DC 310 340V between 1 and 3 of motor connector CN301 Motor connection condition Is it possible to detect DC 15V between 4 and 3 of motor connector CN301 Is it possible to detect DC 15V bet...

Page 107: ...e cover of the fan motor lead wires 3 Check DC voltage with CN301 connector while the fan motor is rotating NOTE Do not disconnect the connector while the fan motor is rotating Use a thin test rod DC Indoor fan starts rotating when power supply is turned on Check output DC voltage of fan motor on P C board Measure voltage between 3 GND BLACK and 5 V line YELLOW of motor connector CN301 while indoo...

Page 108: ...cent light nearby Keep indoor unit away from thyristor fluorescent light Does indoor unit operate when moving remote controller near receiver or indoor unit Batteries are exhausted Does radio sound is affected by remote controller when a signal is transmitted at distance of 5 cm from radio Is transmission mark indicated P C board is defective Replace P C board Replace batteries Replace remote cont...

Page 109: ...oor unit stops 10 to 20 minutes after operation started and 10 minutes or more are required to restart the unit 2 If the unit stops once it does not operate until the power will be turned on again 3 The outdoor unit stops 10 minutes to 1 hour after operation started and an alarm is displayed Discharge temp error check code 03 1E Sensor temp error check code 02 1C 2 3 3 2 1 Red White Terminal block...

Page 110: ...tion Serial communication signal display Receive signal from indoor signal D501 D508 D515 D520 Green LED Indoor Outdoor communication Serial communication signal display Send signal from outdoor signal D800 Green LED 1 Power ON display When the power of the outdoor unit is turned on D800 LED goes on 2 Error display When the outdoor controller detects some errors some LEDs go on or flash according ...

Page 111: ...1 D802 D803 D804 D805 Indoor check code 07 14 16 17 1C 19 1A 1B 1D 1E 1F 18 18 1C 1C 1C 1C Description During normal operation Case thermo operation Power supply error Driving element short circuit Position detection circuit error Current detection circuit error Compressor system error Compressor lock Discharge temp sensor TD error Fan system error Outside temp sensor TO error Compressor lock Disc...

Page 112: ...e valve fully YES 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 ourdoor 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 YES YES YES YES NO YES Correct wiring Replace o...

Page 113: ...tdoor P C B MCC 5071 Defect Replace Is connection of CN601 on P C B MCC 5071 correct Is resistance value of TE sensor correct NO Correct connector Sensor error Replace Is connection of CN600 on P C B MCC 5071 correct Is resistance value of TD sensor correct YES Check outdoor P C B MCC 5071 Defect Replace NO Is AC mains voltage correct 198 to 264V Check wiring construction Ask repair of power suppl...

Page 114: ... outdoor P C B MCC 1571 and MCC 5071 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 Be sure not to forget t...

Page 115: ...utdoor P C B MCC 5071 Defect Replace YES NO Is connection of CN606 on P C B MCC 5071 correct Is resistance value of TGc sensor correct Correct connector Sensor error Replace Check outdoor P C B MCC 5071 Defect Replace YES NO Is connection of CN607 on P C B MCC 5071 correct Is resistance value of TGd sensor correct Correct connector Sensor error Replace Check outdoor P C B MCC 5071 Defect Replace Y...

Page 116: ...on correct Compressor lead Board side Compressor Side Reactor lead Power supply lead Check wire connection and correct it YES NO Is compressor under correct condition Check outdoor P C B MCC 1571 Defect Replace Is there refrigerant stagnation Compressor lock Replace NO YES NO YES Check outdoor P C B MCC 5071 Defect Replace Does PMV correctly operate Check TE TS sensors and PMV Detect Replace NO YE...

Page 117: ...verload Check outdoor P C B MCC 1571 Defect Replace YES YES YES NO NO NO Repair defective position Replace defective part Correct connector Sensor error Replace Check outdoor P C B MCC 5071 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 Repair defective position Replace defective part Correct co...

Page 118: ...tdoor unit 20 Continued PMV error for D room Repair defective position Replace defective part Correct connector Sensor error Replace Check outdoor P C B MCC 5071 and indoor D room P C board Defect Replace Is PMV under correct conditions Check temp sensor of D room indoor unit TA sensor TC sensor NO OK Error YES ...

Page 119: ... indicator Orange go on Is DC12V applied between Brown DC12V and Red GND of CN402 of the high voltage generator Is DC12V applied between and of CN402 of the main P C board MCC5068 Micro switch is stuck Micro switch malfunction To item Power supply is not turned on Replace the main P C board MCC 1571 Replace micro switch Does the PURE indicator go off within 2 seconds after it was ON and does the F...

Page 120: ...oard hold the whole housing Do not pull at the lead wire 2 Inspection procedures 1 When a P C board is judged to be defective check for disconnection burning or discoloration of the copper foil pattern or this P C board 2 The P C board consists of the following 2 parts a Main P C board part DC power supply circuit 5V 12V 35V Indoor fan motor control circuit CPU and peripheral circuits buzzer and D...

Page 121: ...ed level to AUTO Set the preset temperature much lower than the room temperature The unit compressor operates continuously in the above condition 1 Check whether or not the compressor operates 2 Check whether or not the OPERATION indicator flashes 1 The temperature of the indoor heat exchanger is extremely low 2 The connection of the heat exchanger sensor is loose The connector is disconnected CN6...

Page 122: ...0 50 60 70 80 90 20 10 0 0 10 20 30 40 50 Resistance value kΩ Temperature C TD Discharge temp sensor TA Room temp sensor TC TCj Heat exchanger temp sensor TO Outdoor temp sensor TE Outdoor heat exchanger temp sensor TS Suction temp sensor TGa to TGd Gas side temp sensor TA TC TCj TO TE TS TGa to TGd TD ...

Page 123: ... motor Model ICF 280 A60 1 Measure the resistance value of winding by using the tester 3 Compressor thermo Bimetal type Model US622KXTMQO Check conduction by using the tester 4 Outdoor temperature sensor TO pipe temperature sensor TGa TGb TGc TGd discharge temperature sensor TD suction temperature sensor TS evaporator temperature sensor TE Disconnect the connector and measure resistance value with...

Page 124: ...t error inside of the outdoor fan motor or 4 Motor drive circuit error of the outdoor P C board 3 How to simply judge whether outdoor fan motor is good or bad NOTE However GND circuit error inside of the motor may be accepted in some cases when the above check is performed When the fan motor does not become normal even if P C board is replaced replace the outdoor fan motor Turn OFF the breaker Fan...

Page 125: ... UART communication connector CN802 Blue Case thermo connector CN609 Blue Reactor connecting connectors Electrolytic capacitors 760µF 400V Compressor Compressor output terminals output terminals CN200 CN200 CN201 CN201 CN202 CN202 Fan motor output Fan motor output CN300 CN300 Red White Black Red White Black Power supply circuit protective fuse Power supply circuit protective fuse F100 F100 250V 3 ...

Page 126: ...d CN607 Blue TGc CN606 Green TGb CN605 Red TGa CN604 Yellow UART communication connector CN804 White UART communication connector CN802 Blue PMV connector Power Power Alarm display LED Alarm display LED D800 Green D800 Green D801 to D805 Red D801 to D805 Red Specific operation pecific operation and Initial set SW and Initial set SW SW800 SW801 SW802 Lead wire for grounding ead wire for grounding P...

Page 127: ...t run and check for smoke unusual sound and other abnormalities Failure to do so may cause fire or electric shock Make sure that the cabinet is attached before starting test run Perform the following when repairing the refrigeration cycle Watch out for fire in the surrounding area If a gas stove or other appliance is being used extinguish the flames before starting work If the flames are not extin...

Page 128: ... the bottom of the lead wire cover to detach it 5 Disconnect the connectors below Louver motor connector 24P for louver Fan motor connector 5P Louver motor connector 5P for movable panel Minus ion charger connector 4P 6 Remove the motor base assembly by releasing the claw 7 Remove the earth screw TC sensor and TCj sensor CAUTION When attaching the electrical control assembly Insert the projection ...

Page 129: ...left ends of the vertical air flow louver and turn in the counter clockwise direction to remove Fig 12 1 7 4 After pushing in the right and left connector joints remove the vertical air flow louvres Remove the centre joint and bend the louver downward Remove the right side joint first and then remove the left side joint Fig 12 1 8 Electrical control cover detached Electrical control cover Screw Cl...

Page 130: ... and then secure the heat exchanger with screws 12 1 7 Fan Motor 1 Perform work of Detachment 12 1 1 Removing the Front Panel and Moving Panel and 12 1 3 Electrical Control Cover Detached 2 Loosen the hexagon socket set screw of the cross flow fan from the air discharge 3 Remove the two fixing screws of the motor band right 4 Pull the motor band right and the fan motor out of the unit Fig 12 1 10 ...

Page 131: ... centre of the unit and the immediate right joint section of the cross flow fan Detail A Fig 12 1 13 2 Check that the fan motor shaft end projects by 9 mm above the screw boss of the cross flow fan If the motor shaft end is below the screw boss the cross flow fan may have been assembled improperly Check again whether the cross flow fan have been assembled properly Detail B Fig 12 1 14 3 Be sure to...

Page 132: ... 4 While pushing down the hook at the upper part of the high voltage power supply unit detach the upper part of the power supply unit 5 Lift the high voltage power supply unit and pull the projection at the bottom of the high voltage power supply unit out of the fixing frame Fig 12 2 2 CAUTION Carry out this work taking care of the end of the sheet metal on the back of the discharger unit 6 Gently...

Page 133: ... 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 Mount the upper cabinet Hexagonal screw Ø4 10 4 pcs In this time insert the fin guard at rear side between the front panel and the heat exchanger at rear side 2 Connect the power supply cable and the indoor outdoor connecting wire to the terminal and then f...

Page 134: ...and the fin guard Hexagonal screw Ø4 10 2 pcs 3 Rear cabinet 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 exchanger Hexagonal screw Ø4 10 3 pcs 5 Remove the rear cabi...

Page 135: ...sensor 2P Blue CN606 TGc sensor 2P Green CN605 TGb sensor 2P Red CN604 TGa sensor 2P Yellow CN703 PMV coil 6P Blue CN702 PMV coil 6P Green CN701 PMV coil 6P Red CN700 PMV coil 6P Yellow 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 DI P C board to the other parts CN701 4 way valve coil 2P Wh...

Page 136: ...r 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 No Part name Procedure Remarks Reactor cover side Inverter box side Inverter box side Inverter box side Hook Partition cover Sou...

Page 137: ...of 1 3 of 2 4 and 2 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 DI P C board 4 way valve coil compressor case thermo UART 2 Inter unit wire 5 Rem...

Page 138: ...te 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 terminal Be sure not to forget to attach the Sub heat sink and also the rediating sheet If you apply a little amount of radiating grease beforehand to the rear side of the insulat...

Page 139: ... 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 the front panel Caution to mount the inverter assembly When mounting the inverter assembly to the partition plate be sure to attach the hooks certainly No Part name Procedure Remarks Hooks Partition plate Reactor cover...

Page 140: ...contact with the propeller fan Put in the fan motor lead fixing rubber to the partition plate so that the projection comes to the refrigerating cycle side There provided at 2 positions the grooves to pass the fan motor lead wire into the motor base Use the lower groove CAUTION Using the metal band of the motor base be sure to fix the fan motor lead to the motor base so that the fan motor lead does...

Page 141: ...the compressor bolts 3 pcs which fix the compressor to the compressor fixing plate 11 Remove the compressor from the compressor fixing plate NOTE A compressor weighs approx 15 kg Treat a compressor by two or more personals Caution to assemble compressor Tighten the compressor bolt with 5 N m 50 kgf cm Be sure not to turn lead wire of the coil Take care there is no missing of sensor Mount the sound...

Page 142: ...he 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 11 Fan guard 1 Detachment 1 Remove the top plate Hexagonal screw Ø4 10 6 pcs 2 Take off fixing screws for the fin guard and the anchor board Hexagonal screw Ø4 10 3 pcs 3 Mount a new fin guard No Part name Proc...

Page 143: ...e 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 No Part name Procedure Remarks Detail A Label Label 4 way valve unit 4 way valve unit 4 way valve coil 4 way valve coil Label 4 way valve unit 4 way valve coil Concave part of PMV Proje...

Page 144: ...ns If there are incorrect mounted positions control of the product does not operate correctly and a trouble may be caused 15 TS sensor Suction temperature Attachment Insert TS sensor into the sensor holder welded to the suction pipe and then mount it 16 TD sensor Discharge temperature Attachment Mount TD sensor on the straight part of the discharge pipe so that the lead wire directs upward and the...

Page 145: ... caused 19 Sensor wiring process Using bundling band bind PMV coil Blue to Yellow with Tga to Tge For Td sensor bind the case thermo and reactor lead by bundling band NOTE Using the bundling band being on the market be sure to bind the position which was bound No Part name Procedure Remarks TGd Blue TGc Green TGb Red TGa Yellow Detail G Detail G Bundling band Bundling band PMV coil Black to Yellow...

Page 146: ...O sensor through upper part of the inverter fixing board and then bind them with the bundling band NOTE Using the bundling band being on the market be sure to bind the position which was bound No Part name Procedure Remarks Inverter fixing board Bundling band TS sensor TE sensor TO sensor Bundling band TE sensor TO sensor ...

Page 147: ...s y Motor M10 13 16 Base Bearing Ass y M18 Base Bearing Ass y M10 13 16 Fan Ass y Cross Flow Band Motor Right Bearing Ass y Mold Holder Pipe Pipe Shield Refrigeration Cycle Ass y M10 13 222 223 224 225 226 227 228 229 232 233 234 237 238 239 240 243 245 248 250 43044876 43044875 43049784 43096255 43096257 4301V097 4301V089 43019904 43062276 43062275 43082296 43083071 43003323 43070199 43079239 430...

Page 148: ...o Part No Description Location No Part No Description 401 402 403 404 405 416 4306A132 43050425 4306V137 43050426 43051349 43067115 Terminal Block 3P Sensor Ass y Service Sensor Service P C board Ass y WRS LED Switch Ass y Micro Clamp Cord 417 418 419 420 4306V206 4306V207 4306V208 4306V209 P C board Ass y M10PKVP E P C board Ass y M13PKVP E P C board Ass y M16PKVP E P C board Ass y M18PKVP E 417 ...

Page 149: ...5 32 33 49 Holder Sensor 9 52 TE TG 50 Holder Sensor 9 52 TD 51 Holder Sensor 12 7 TG 3 34 9 30 28 29 31 42 35 53 36 52 6 10 25 39 40 23 24 14 17 20 15 18 21 12 47 O D 9 52 mm O D 9 52 mm O D 6 35 mm O D 12 7 mm O D 12 7 mm 16 19 22 13 46 48 1 2 54 ...

Page 150: ...Mouth Base Ass y Compressor DA220A2F 22L Valve Packed 9 52 Valve Packed 12 7 Socket 6 35 DIA Socket 9 52 DIA Socket 12 7 DIA Bonnet 1 4 IN Bonnet 3 8 IN Bonnet 1 2 IN Nut Flare 1 4 IN Nut Flare 3 8 IN Nut Flare 1 2 IN Body PMV Coil PMV UKV A038 25 28 29 30 31 32 33 34 35 36 39 40 42 43 46 47 48 49 50 51 52 53 54 43163055 43050407 43063317 43049739 43122120 43047669 43120244 4312C042 43058290 43048...

Page 151: ...160611 43050425 43050446 43150319 43158192 Terminal Block 6P 20A Terminal Block 9P B Sensor Ass y Service TO TE TS Sensor Ass y Service TGa to TGd Sensor Ass y Service TD Reactor 706 707 708 709 710 711 712 713 43155188 43160589 43163059 43163060 4316V393 43163062 4316V414 4316V442 Reactor CH 56 2Z T Fuse Spacer Bush Spacer Collar P C board Ass y MCC 1436 Spacer Ass y P C board Ass y MCC 1571 P C ...

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Toshiba RAS-4M27UAV-E, Service Manual

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