Toyotomi TAG-A28IV Service Manual Download Page 1

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SERVICE MANUAL

ROOM AIR CONDITIONER

TAN/TAG-A28IV
TAN/TAG-A32IV
TAN/TAG-A53IV

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 ...................... 51

SEMICONDUCTOR PIN FUNCTION ................................... 55

THERMISTOR RESISTANCE CHART ................................. 60

EXPLODED VIEW (INDOOR UNIT) .................................... 68

EXPLODED VIEW (OUTDOOR UNIT) ................................ 71

PARTS LIST (INDOOR UNIT) .............................................. 73

PARTS LIST (OUTDOOR UNIT) .......................................... 74

Summary of Contents for TAG-A28IV

Page 1: ...ON 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 51 SEMICONDUCTOR PIN FUNCTION 55 THERMISTOR RESISTANCE CHART 60 EXPLODED VIEW INDOOR UNIT 68 EXPLODED VIEW OUTDOOR UNIT 71 PARTS LIST INDOOR UNIT 73 PARTS LIST OUTDOOR UNIT 74 ...

Page 2: ... Cooling 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 wire 1 mm mm Dimensions mm mm kg Net Weight 3 2 Half Union 1 4 Half Union 3 8 L liquid side 1 4 G gas side 3 8 2 way valve 1 4 3 way valve 3 8 L liquid side 1 4 G gas side 3 8 TAN A28IV TAG A28IV ...

Page 3: ...forced draft Refrigerant Control Device g oz Refrigerant R410A 850 30 0 Thermostat Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Photo catalytic Catechin Specifications are subject to change without notice 1 Mounting plate 2 Remote controller 3 Battery 2 pcs 4 Remote controller holder 5 Screw cap 2 pcs 6 Drain elbow 7 Vibration proof rubber 4 pcs Timer Real time dual ON...

Page 4: ... Cooling 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 wire 1 mm mm Dimensions mm mm kg Net Weight 3 2 Half Union 1 4 Half Union 3 8 L liquid side 1 4 G gas side 3 8 2 way valve 1 4 3 way valve 3 8 L liquid side 1 4 G gas side 3 8 TAN A32IV TAG A32IV ...

Page 5: ... 0 Thermostat Air Filter Electronic Control Type Motor Type Rated Output Photo catalytic Catechin Specifications are subject to change without notice 1 Mounting plate 2 Remote controller 3 Battery 2 pcs 4 Remote controller holder 5 Screw cap 2 pcs 6 Drain elbow 7 Vibration proof rubber 4 pcs Timer Real time dual ON OFF 7 hour OFF Parts Provided Induction 4 pole Induction 6 pole Capillary Tube TAN ...

Page 6: ...ooling 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 wire 2 mm mm Dimensions mm mm kg Net Weight 3 2 Half Union 1 4 Half Union 3 8 L liquid side 1 4 G gas side 3 8 2 way valve 1 4 3 way valve 3 8 L liquid side 1 4 G gas side 3 8 TAN A53IV TAG A53IV 17...

Page 7: ...frigerant R410A 1200 42 3 Thermostat Air Filter Electronic Control Type Motor Type Rated Output Specifications are subject to change without notice 1 Mounting plate 2 Remote controller 3 Battery 2 pcs 4 Remote controller holder 5 Drain elbow Timer Real time dual ON OFF 7 hour OFF Parts Provided DC brushless 8 pole Induction 6 pole Expansion Valve TAN A53IV TAG A53IV Photo catalytic Catechin ...

Page 8: ...e sensor thermistor Time delay safety control Restarting is inhibited for approximately 3 minutes Indoor fan speed control High Med Low Operation indication lamps LED POWER GREEN or RED Lights up green during operation Lights up red when negative ions are generated except TAN A53IV TIMER YELLOW Timer in operation OPERATE GREEN Outdoor unit operate Dry operation mode Automatic fan speed control Roo...

Page 9: ...or 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 The louver starts vertical swing with a push of the LOUVER BUTTON Push the LOUVER BUTTON once again to stop the louver at the desired position while swinging Auto recovery function If there is any powe...

Page 10: ...peration 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 AUTOMATIC AUTOMATIC Operation Designated mode temperature Timer mode Air flow HOW TO RELEASE EMERGENCY AND TEST OPERATION In case of releasing during those operations you can either push emergency operat...

Page 11: ...s the SLEEP button until the operating period on the LCD disappears AIRFLOW DIRECTION CONTROL Vertical adjustment When ON OFF switch is pressed the vertical louver will move to the adequate positions for each operation automatically Swing of air flow If air flow direction switch is pressed once the vertical louver will move within the range of figures Fixing the flow direction If air flow directio...

Page 12: ... 4 MIN 0 7 C 0 Hz Frequency of Designated compressor temperature Room temperature 4 MIN COOLING MODE OPERATION The compressor will stop when operational frequency reached the minimum frequency and that condition has been kept for 1 seconds and the room temperature becomes 1 3 C lower than it was set The compressor will re start when room temperature becomes 0 7 C higher than it was set The operati...

Page 13: ...al frequency will be set every 2 seconds of operation The operational frequency setting will be calculated based on the deviation of the room temperature and the set temperature on one end and the deviation factor at the time of previous setting on another Indoor fan Selected speed Stop Super low Super low 3min 0 Hz Frequency of compressor Designated temperature Room temperature Selected speed 1 3...

Page 14: ...RATION The compressor will stop when operational frequency reached the minimum frequency and that condition has been kept for 1 seconds and the room temperature becomes 5 0 C higher than it was set The compressor will re start when room temperature becomes 3 0 C higher than it was set The operational frequency will be set every 2 seconds of operation The operational frequency setting will be calcu...

Page 15: ...e of outdoor heat exchanger sensed by the thermistor and the timer switch Defrosting operation starts when the both of the following conditions are met at the same time a 1 minutes of continuous run of the compressor after the start of heating operation or after the completion of previous defrosting operation b the temperature of the outdoor heat exchanger stays lower than 2 C continuously for two...

Page 16: ...0min 1 5min T4 F4 54Hz Min 32Hz 74Hz limitless limitless 32Hz Cooling 48Hz 58Hz 72Hz Heating 48Hz 1 5min 1 5min 58Hz 84Hz 1min 30min 1min 66Hz 32Hz 84Hz limitless limitless 44Hz T1 Forced rotating to reach 10Hz F2 F3 Forced frequency for lubricant back TAN TAG A28IV Cooling 50Hz 68Hz 92Hz Heating 50Hz 1 5min 1 5min 68Hz 100Hz 1min 25min 1min 40min 86Hz 20Hz 86Hz limitless limitless 20Hz TAN TAG A5...

Page 17: ...s to earthing works Be sure to check the insulated resistance more than 1M Ω Warning The combinations of three LED indicators ON Flashing OFF provide the self diagnosis information as most of them shown in the trouble shooting guide Note1 Discharge electricity of the capacitor by making short circuit firstly Then check the capacitor by tester Be sure to set up the tester for the measurement of big...

Page 18: ...HANGER SENSOR TEMP DEFROST SENSOR TEMP OUTDOOR SENSOR TEMP DISCHARGE FILTER IS CHOKED SENSOR TEMP HEAT EXCHANGER TAN PCB MAIN FAN MOTOR TAN FAN MOTOR TAN POWER SUPPLY REMOTE CONTROL TAN FUSE 3 15A TAN TERMINAL BLOCK PCB RECEIVER DISPLAY TAN PCB MAIN MIS WIRING TAG TAN CONNECTING CABLE OR RARE CONTACT CUTTING OFF CT CURRENT FUSE FUSING ON THE TAG PCB GAS LEAKAGE VALVE SERVICE IS CLOSED PIPE SENSOR ...

Page 19: ...or should be replaced check the resistance by tester see fig 4 check the blockage of air inlet outlet of TAN TAG common terminal 5 1 tester resistance terminal block Normal 360 390Ω fig 3 Voltage of TAN fan motor on the TAN PCB main fig 1 Voltage of TAG fan motor on the TAG PCB main fig 4 Resistance of 4 way valve coil fig 5 Resistance of TAN louver motor Take off the connector and check the Resis...

Page 20: ...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 error indication by reversing cycle up to four latest errors in the past At any stage the error indication will disappear after 30 seconds ftable 4 Sensor temp power module 210 79 33 15 8 4 Resistance k Ω 1...

Page 21: ...ISPLAY MANUAL SWITCH BL BL SENSOR TEMP ROOM B B SENSOR TEMP HEAT EXCHANGER MOTOR LOUVER P IONIZER PCB MAIN COMPRESSOR OR Y REACTOR 4WAY V MOTOR FAN SENSOR TEMP DISCHARGE SENSOR TEMP DEFROST B W R B W R VOLTAGE P C B 11 10 14 13 B R BL W 9 1 2 4 3 6 8 5 GR P 3 1 2 TERMINAL BLOCK INDOOR UNIT BL Y G W T V S U R U R W T V S B BL BR G GR OR P R W Y BLACK BLUE BROWN GREEN GRAY ORANGE PINK RED WHITE YELL...

Page 22: ... G Y EARTH TERMINAL POWER SOURCE MOTOR FAN B B BL BL GR EARTH TERMINAL 15 COMPRESSOR OR Y REACTOR 4WAY V MOTOR FAN SENSOR TEMP DISCHARGE SENSOR TEMP OUTDOOR SENSOR TEMP DEFROST B W R B W R VOLTAGE P C B 11 10 Y 14 13 B R BL W 9 1 2 4 3 6 8 5 GR P 3 1 2 TERMINAL BLOCK INDOOR UNIT BL Y G R C T S W U R W T V S EXP V 17 B BL BR G GR OR P R W Y BLACK BLUE BROWN GREEN GRAY ORANGE PINK RED WHITE YELLOW T...

Page 23: ...arging purge all the remaining refrigerant first and then evacuate the unit completely with vacuum pump and finally apply rated volume charging of refrigerant Charging of refrigerant should be done by cooling operation because the pressure at service valve will be too high at heating cycle then the heating performance characteristics must be checked by restarting of heating operation Piping size M...

Page 24: ... 2 0 3 0 2 5 4 0 3 5 5 0 4 5 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 C 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 C AIR TEMPERATURE INDOOR 20 C 2 0 2 5 3 0 3 5 35 40 45 50 C MPa CURRENT TEMPERATURE BLOW OUT SERVICE PORT PRESSURE 4 0 3 5 4 5 5 0 5 5 A ...

Page 25: ... 2 5 2 0 3 5 4 5 4 0 3 0 5 0 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 C 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 C AIR TEMPERATURE INDOOR 20 C 2 0 2 5 3 0 3 5 35 40 45 50 C MPa CURRENT TEMPERATURE BLOW OUT SERVICE PORT PRESSURE 4 0 3 5 4 5 5 0 5 5 A ...

Page 26: ... 3 5 3 0 4 5 5 5 5 0 4 0 6 0 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 C 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 C AIR TEMPERATURE INDOOR 20 C 2 0 2 5 3 0 3 5 35 40 45 50 C MPa CURRENT TEMPERATURE BLOW OUT SERVICE PORT PRESSURE 5 5 5 0 6 0 6 5 7 0 A ...

Page 27: ...INAL BLOCK TO OUTDOOR UNIT 1 2 3 1 2 3 1 2 3 4 WHITE RED BLACK WHITE RED GREEN YELLOW CN4 CN7 RL1TAB2 RL1TAB1 L1 C3 PC2B C2 C1 ZE1 CF1 RL1A RL2A D1 PC1B PC3A R2 C11 R21 D2 250V T3 15A R3 AC CORD PC2A PC1A RL2B RL1B IC1 BLUE BLUE RED RED BLACK WHITE BROWN YELLOW RED BLUE 1 3 1 2 WIRELESS REMOTE CONTROL ELECT LED TIMER LED IONIZER LED OPERATE LED RECEIVER UNIT PCB RECEIVER DISPLAY 1 2 3 4 5 6 7 CN1 ...

Page 28: ... 27 ELECTRIC CIRCUIT DIAGRAM TAN A53IV ...

Page 29: ...28 3 0 97 5 0 85 22 5 322 5 0 29 2 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 0 256 7 0 36 1 0 77 9 1 02 18 5 248 6 0 37 1 5 75 8 1 04 18 0 240 8 0 38 2 0 73 7 1 07 17 5 233 2 0 39 2 5 71 7 1 09 17 0 225 9 0 41 3 0 69 8 1 11 16 5 218 9 0 42 3 5 67 ...

Page 30: ...1 89 37 5 13 1 3 02 18 0 32 2 1 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 5 27 1 2 12 41 5 11 1 3 22 22 0 26 5 2 15 42 0 10 8 3 24 22 5 25 9 2 18 42 5 10 6 3 27 23 0 25 3 2 21 43 0 10 4 3 29 23 5 24 7 2 24 43 5 10 2 3 31 24 0 24 1 2 27 44 0 ...

Page 31: ... 12 14 0 16 1 0 85 25 0 122 2 0 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 18 0 81 1 0 20 22 0 11 3 1 13 17 0 76 7 0 21 23 0 10 9 1 16 16 0 72 5 0 22 24 0 10 4 1 20 15 0 68 5 0 23 25 0 10 0 1 24 14 0 64 9 0 24 26 0 9 6 1 28 13 0 61 4 0 26 27 ...

Page 32: ...53 95 0 0 9 3 89 56 0 3 1 2 58 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 87 103 0 0 8 4 06 64 0 2 4 2 91 104 0 0 7 4 08 65 0 2 3 2 95 105 0 0 7 4 10 66 0 2 2 2 99 106 0 0 7 4 12 67 0 2 2 3 02 107 0 0 7 4 14 68 0 2 1 3 06 108 0 0 7 4 16 69 0 2 0 3...

Page 33: ... 26 0 129 8 0 67 14 0 16 1 2 77 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 21 0 11 8 3 14 18 0 81 1 0 99 22 0 11 3 3 19 17 0 76 7 1 03 23 0 10 9 3 24 16 0 72 5 1 08 24 0 10 4 3 29 15 0 68 5 1 13 25 0 10 0 3 33 14 0 64 9 1 18 26 0 9 6 3 38 13 0 ...

Page 34: ... 3 2 4 31 95 0 0 9 4 77 56 0 3 1 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 4 45 103 0 0 8 4 82 64 0 2 4 4 47 104 0 0 7 4 82 65 0 2 3 4 48 105 0 0 7 4 83 66 0 2 2 4 50 106 0 0 7 4 83 67 0 2 2 4 51 107 0 0 7 4 83 68 0 2 1 4 53 108 0 0 7 4 84 69 ...

Page 35: ...26 24 0 9674 8 0 02 16 0 815 4 0 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 37 17 0 5934 9 0 04 23 0 566 6 0 38 16 0 5546 7 0 04 24 0 538 6 0 40 15 0 5186 7 0 04 25 0 512 2 0 42 14 0 4852 5 0 05 26 0 487 2 0 44 13 0 4542 2 0 05 27 0 463 6 0 46 1...

Page 36: ...29 9 3 06 56 0 125 4 1 36 96 0 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 0 94 6 1 66 103 0 23 1 3 35 64 0 91 0 1 70 104 0 22 4 3 39 65 0 87 5 1 75 105 0 21 7 3 42 66 0 84 2 1 79 106 0 21 1 3 45 67 0 81 0 1 84 107 0 20 4 3 49 68 0 77 9 1 88 1...

Page 37: ... 68 EXPLODED VIEW INDOOR UNIT TAN A28IV accessories 21 22 10 12 23 13 14 19 8 9 20 20 15 16 17 18 11 2 3 7 6 5 4 1 29 24 27 28 25 26 ...

Page 38: ... 69 EXPLODED VIEW INDOOR UNIT TAN A32IV 11 2 3 7 6 5 4 1 21 22 10 12 15 14 8 13 19 18 23 20 17 16 20 9 29 24 27 28 25 26 accessories ...

Page 39: ... 70 EXPLODED VIEW INDOOR UNIT TAN A53IV accessories 14 10 12 13 23 22 11 3 2 3 4 1 16 18 21 19 17 8 9 20 20 7 24 27 28 25 ...

Page 40: ... 71 EXPLODED VIEW OUTDOOR UNIT TAG A28IV TAG A32IV 1 9 11 4 16 27 2 10 5 8 6 13 14 3 20 21 7 22 25 28 17 18 24 26 19 12 23 15 accessories ...

Page 41: ... 72 EXPLODED VIEW OUTDOOR UNIT TAG A53IV 1 9 11 29 4 16 2 10 5 8 6 13 14 3 20 21 7 22 25 28 17 18 24 26 19 31 30 12 23 15 ...

Page 42: ... MOTOR FAN 5350163 2 3006370 0 3006371 0 13 TANGENTIAL FAN 5081009 0 3005623 0 14 BEARING ASSY 2004833 0 15 DRAIN PAN ASSY 2046578 0 16 MOTOR LOUVER 3006139 0 3005753 0 17 LOUVER UP DOWN 2004445 0 2041212 0 18 DRAIN HOSE 5162000 0 19 EVAPORATOR ASSY 2046581 1 2046584 1 2041217 4 20 AIR FILTER 2049028 0 2049037 0 2049966 0 21 MOUNTING PLATE 2017395 0 2014715 3 22 PIPING SUPPORT 2004441 0 2041209 0 ...

Page 43: ...08001 0 14 BRACKET MOTOR 2041527 2 2049063 0 15 OUTLET GRILLE 2041498 0 16 CONTROLLER ASSY 2049033 1 2049041 1 2049064 1 17 TERMINAL BLOCK 5162082 0 18 COIL 4 WAY VALVE 5120232 1 19 4 WAY VALVE 5120241 1 5120242 1 20 VALVE SERVICE 1 4 5153562 1 5153573 1 21 VALVE SERVICE 3 8 3005635 1 22 SENSOR TEMP DEFROST 5110096 0 23 SENSOR TEMP DISCHARGE 5110087 0 24 SOUND PROOFMATERIAL1 2041545 1 2043772 0 20...

Page 44: ...ISSUED MAR 2007 RA 53 1 Printed in Japan ...

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