Toyotomi TAG-A70IV Service Manual Download Page 1

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TAN/TAG-A70IV(A)

CONTENTS

SPECIFICATION .................................................................... 1

FUNCTIONS .......................................................................... 7

SERVICE FUNCTION EXPLANATION .................................. 9

OPERATION DETAILS......................................................... 10

TROUBLESHOOTING GUIDE ............................................. 16

PERFORMANCE CURVE DIAGRAM .................................. 22

ELECTRIC CIRCUIT DIAGRAM .......................................... 26

SCHEMATIC DIAGRAM AND PCB’S .................................. 30

PARTS LIST (PCB) .............................................................. 40

SEMICONDUCTOR LEAD IDENTIFICATION ...................... 54

SEMICONDUCTOR PIN FUNCTION ................................... 58

THERMISTOR RESISTANCE CHART ................................. 63

EXPLODED VIEW (INDOOR UNIT) .................................... 71

EXPLODED VIEW (OUTDOOR UNIT) ................................ 74

PARTS LIST (INDOOR UNIT) .............................................. 76

PARTS LIST (OUTDOOR UNIT) .......................................... 77

SERVICE MANUAL

ROOM AIR CONDITIONER

Summary of Contents for TAG-A70IV

Page 1: ...CURVE DIAGRAM 22 ELECTRIC CIRCUIT DIAGRAM 26 SCHEMATIC DIAGRAM AND PCB S 30 PARTS LIST PCB 40 SEMICONDUCTOR LEAD IDENTIFICATION 54 SEMICONDUCTOR PIN FUNCTION 58 THERMISTOR RESISTANCE CHART 63 EXPLODE...

Page 2: ...ing Heating A Cooling Heating A inch Piping Connection Port Flare piping L L inch G G inch Pipe Size Flare piping inch mm Drain hose Length Height Width Depth Number of core wire Power Cord m m core w...

Page 3: ...gerant Control Device g oz Refrigerant R410A 1 400 49 5 Thermostat Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Photo catalytic Catechin Specifications are subject to chan...

Page 4: ...m temperature Room temperature sensor thermistor Time delay safety control Restarting is inhibited for approximately 3 minutes Indoor fan speed control High Med Low Operation indication lamps LED POWE...

Page 5: ...r s piping temperature is above 2 C Airflow direction control When ON OFF BUTTON is pressed the vertical louver will move to the adequate positions for each operation automatically Manual operation Th...

Page 6: ...eration switch is pressed more than 10 seconds it doesn t work After 30 minutes test operation ends automatically Temperature ABOVE 23 C BELOW 23 C COOLING HEATING 26 C 23 C CONTINUOUS CONTINUOUS AUTO...

Page 7: ...ellation ON OFF Timer Press the Timer fixing button ON On Timer and or OFF Off Timer once again Sleep Timer Press the SLEEP button until the operating period on the LCD disappears AIRFLOW DIRECTION CO...

Page 8: ...or temperature Room temperature MIN 20Hz COOLING MODE OPERATION The compressor will stop when operational frequency reached the minimum frequency and that condition has been kept for 360 seconds and t...

Page 9: ...0 7 C higher than it was set The operational frequency will be set every 120 seconds of operation The operational frequency setting will be calculated based on the deviation of the room temperature a...

Page 10: ...frequency reached the minimum frequency and that condition has been kept for 360 seconds and the room temperature becomes 5 0 C higher than it was set The compressor will re start when room temperatur...

Page 11: ...ermistor and the timer switch Defrosting operation starts when the both of the following conditions are met at the same time a 40 minutes of continuous run of the compressor after the start of heating...

Page 12: ...T3 T Max F2 F3 Max Min Model Number Time T2 Frequency F2 Cooling 60Hz T Max Max 92Hz Heating 60Hz 1 5min 1 5min 88Hz 25min 40min T3 F3 82Hz Min 20Hz 80Hz limitless limitless 30Hz T1 Forced rotating t...

Page 13: ...t the units to earthing works Be sure to check the insulated resistance more than 1M Warning The combinations of three LED indicators ON Flashing OFF provide the self diagnosis information as most of...

Page 14: ...EAT EXCHANGER SENSOR TEMP DEFROST SENSOR TEMP OUTDOOR SENSOR TEMP DISCHARGE FILTER IS CHOKED SENSOR TEMP HEAT EXCHANGER RC PCB MAIN FAN MOTOR RC FAN MOTOR RC POWER SUPPLY REMOTE CONTROL RC FUSE 3 15A...

Page 15: ...MOTOR RC check the voltage between blue and yellow in connector see fig 3 if it is AC 110V 230V RC fan motor should be replaced check the resistance by tester see fig 4 check the blockage of air inlet...

Page 16: ...ld for more than 10 seconds while unit is not operated and release the switch when you hear three beeps You will see the latest error by indication lamp Further pushing of the switch will make the err...

Page 17: ...PCB RECEIVER DISPLAY MANUAL SWITCH TERMINAL BLOCK FUSE 250V T3 15A PCB CONTROLLER POWER SOURCE 3 2 1 OUTDOOR UNIT B R W BR B B BL BL BL MOTOR LOUVER 17 15 COMPRESSOR OR Y REACTOR 4WAY V MOTOR FAN SEN...

Page 18: ...e refrigerant In order to avoid excessive charging purge all the remaining refrigerant first and then evacuate the unit completely with vacuum pump and finally apply rated volume charging of refrigera...

Page 19: ...0 6 5 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 20 25 30 35 C AIR TEMPERATURE INDOOR 20 C 2 0 2 5 3 0 SERVICE PORT PRESSURE A C MPa 4 0 5 0 4 5 6 0 5 5 7...

Page 20: ...5 94 8 0 87 22 0 312 1 0 30 2 0 92 1 0 89 21 5 302 0 0 31 1 5 89 5 0 91 21 0 292 2 0 32 1 0 87 1 0 93 20 5 282 9 0 33 0 5 84 7 0 96 20 0 273 8 0 34 0 0 82 3 0 98 19 5 265 1 0 35 0 5 80 1 1 00 19 0 25...

Page 21: ...92 38 0 12 9 3 04 18 5 31 4 1 95 38 5 12 6 3 07 19 0 30 6 1 98 39 0 12 3 3 09 19 5 29 9 2 00 39 5 12 1 3 12 20 0 29 2 2 03 40 0 11 8 3 14 20 5 28 5 2 06 40 5 11 6 3 17 21 0 27 8 2 09 41 0 11 3 3 19 21...

Page 22: ...13 15 0 15 4 0 88 24 0 115 1 0 14 16 0 14 7 0 92 23 0 108 5 0 15 17 0 14 1 0 95 22 0 102 3 0 16 18 0 13 5 0 98 21 0 96 4 0 17 19 0 12 9 1 02 20 0 91 0 0 17 20 0 12 4 1 05 19 0 85 9 0 18 21 0 11 8 1 09...

Page 23: ...96 0 0 9 3 91 57 0 3 0 2 62 97 0 0 9 3 94 58 0 2 9 2 66 98 0 0 9 3 96 59 0 2 8 2 70 99 0 0 8 3 98 60 0 2 7 2 74 100 0 0 8 4 00 61 0 2 6 2 79 101 0 0 8 4 02 62 0 2 5 2 83 102 0 0 8 4 04 63 0 2 5 2 87 1...

Page 24: ...25 0 122 2 0 70 15 0 15 4 2 83 24 0 115 1 0 74 16 0 14 7 2 88 23 0 108 5 0 78 17 0 14 1 2 93 22 0 102 3 0 82 18 0 13 5 2 99 21 0 96 4 0 86 19 0 12 9 3 04 20 0 91 0 0 90 20 0 12 4 3 09 19 0 85 9 0 94 2...

Page 25: ...4 33 96 0 0 9 4 78 57 0 3 0 4 35 97 0 0 9 4 79 58 0 2 9 4 37 98 0 0 9 4 79 59 0 2 8 4 39 99 0 0 8 4 80 60 0 2 7 4 40 100 0 0 8 4 80 61 0 2 6 4 42 101 0 0 8 4 81 62 0 2 5 4 44 102 0 0 8 4 81 63 0 2 5...

Page 26: ...27 23 0 9007 3 0 03 17 0 773 3 0 29 22 0 8390 7 0 03 18 0 733 5 0 30 21 0 7820 6 0 03 19 0 696 1 0 32 20 0 7293 4 0 03 20 0 660 8 0 33 19 0 6805 4 0 03 21 0 627 6 0 35 18 0 6353 6 0 04 22 0 596 2 0 3...

Page 27: ...28 9 3 09 57 0 120 4 1 40 97 0 28 0 3 13 58 0 115 6 1 45 98 0 27 1 3 17 59 0 111 0 1 49 99 0 26 3 3 21 60 0 106 6 1 53 100 0 25 4 3 24 61 0 102 4 1 57 101 0 24 6 3 28 62 0 98 4 1 62 102 0 23 9 3 32 63...

Page 28: ...51 EXPLODED VIEW INDOOR UNIT TAN A70IV A 28 26 27 8 14 13 10 12 11 9 18 16 15 25 19 23 2 1 4 5 3 7 6 21 22 24 29 17 20 accessories...

Page 29: ...52 EXPLODED VIEW OUTDOOR UNIT TAG A70IV A 10 2 26 24 1 5 28 9 3 14 16 17 15 18 12 11 8 25 20 21 30 31 19 29 23 13 3 5 6 7 22 27...

Page 30: ...MOTOR FAN 5350163 2 13 TANGENTIAL FAN 3002479 0 14 BEARING ASSY 2004833 0 15 DRAIN PAN ASSY 2002267 2 16 MOTOR LOUVER 3006139 0 17 LOUVER UP DOWN 2014720 0 18 DRAIN HOSE 5162000 0 19 EVAPORATOR ASSY...

Page 31: ...OF MATERIAL1 SOUND PROOF MATERIAL2 SOUND PROOF MATERIAL3 SOUND PROOF MATERIAL4 2045111 0 15 VIBRATION PROOF RUBBER comp 2045112 0 16 FIXTURE CORD 2055353 0 17 4 WAY VALVE 2045114 0 18 COIL 4 WAY VALVE...

Page 32: ...ISSUED MAY 2008 RA 64 2 Printed in Japan REVISED SEP 2008...

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