Toyotomi TAG-A28EWI Service Manual Download Page 1

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SERVICE MANUAL

ROOM AIR CONDITIONER

TAN/TAG-A28EWI
TAN/TAG-A32EWI
TAN/TAG-A53EWI

CONTENTS

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

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

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

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

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

PERFORMANCE CURVE DIAGRAM .................................. 27

ELECTRIC CIRCUIT DIAGRAM .......................................... 31

EXPLODED VIEW (INDOOR UNIT) .................................... 35

EXPLODED VIEW (OUTDOOR UNIT) ................................ 37

PARTS LIST (INDOOR UNIT) .............................................. 39

PARTS LIST (OUTDOOR UNIT) .......................................... 41

Summary of Contents for TAG-A28EWI

Page 1: ...ONTENTS SPECIFICATION 1 FUNCTIONS 7 SERVICE FUNCTION EXPLANATION 9 OPERATION DETAILS 10 TROUBLESHOOTING GUIDE 16 PERFORMANCE CURVE DIAGRAM 27 ELECTRIC CIRCUIT DIAGRAM 31 EXPLODED VIEW INDOOR UNIT 35 E...

Page 2: ...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 cor...

Page 3: ...nt Control Device g oz Refrigerant R410A 1 100 38 8 Thermostat Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Mold proof Specifications are subject to change without notice...

Page 4: ...oling 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...

Page 5: ...nt Control Device g oz Refrigerant R410A 1 100 38 8 Thermostat Air Filter Electronic Control Type Motor Type Rated Output Mold proof Specifications are subject to change without notice 1 Mounting plat...

Page 6: ...ling 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...

Page 7: ...z Refrigerant R410A 1 100 38 8 Thermostat Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Mold proof Specifications are subject to change without notice 1 Mounting plate 2 Re...

Page 8: ...the room 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...

Page 9: ...Compressor will be restarted when the evaporator s piping temperature is above 2 Airflow direction control Automatic airflow direction control The louver automatically swings up and down cooling dry h...

Page 10: ...more than 10 seconds it doesn t work After 30 minutes test operation ends automatically SERVICE FUNCTION EXPLANATION J1 Soldering J1 Temperature ABOVE 23 BELOW 23 COOLING HEATING 26 23 CONTINUOUS CON...

Page 11: ...mer 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 CONTROL Vertical adj...

Page 12: ...ion modes for 3 minutes after its stop Compressor does not stop during the first 6 minutes of its operation even if the room temperature reaches to the designated temperature except changing setting t...

Page 13: ...The operating frequency of the compressor is determined according to the room temperature see the diagram below 98Hz 90Hz 70 66 62 58 52 52 48 48 Operating frequency of compressor Indoor fan Indoor fa...

Page 14: ...ssor MAX30Hz MAX30Hz MIN15Hz DRY MODE OPERATION During dry mode operation both motors TAN TAG run proportionally according to the temperatures indoor outdoor The compressor runs continuously while uni...

Page 15: ...ON The compressor will stop when operational frequency reached the minimum frequency and that condition has been kept for 6 minutes and the room temperature becomes 4 7 higher than it was set The comp...

Page 16: ...ed by the thermistor 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 star...

Page 17: ...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 18: ...e or incomplete insertion of connector PCB TAN MAIN PCB TAG MAIN FAN MOTOR TAG FAN MOTOR TAN SENSOR TEMP ROOM SENSOR TEMP HEAT EXCHANGER SENSOR TEMP DEFROST SENSOR TEMP DISCHARGE FILTER IS CHOKED SENS...

Page 19: ...U respec tively by changing the polarity and if all the figures show infinite more than hundreds of k then it is normal condition if not it is defective Take off the connectors 1 5 on the PCB TAG mai...

Page 20: ...ig 7 normal accident of compressor accident of PCB TAG main accident of power module take off the connectors 15 16 normal normal NO NO YES YES accident of power module check the voltage 230V between 1...

Page 21: ...r Sensor temp heat exchanger table 3 Sensor temp discharge Push emergency operation switch and hold for more than 10 seconds while unit is not operated and release the switch when you hear three beeps...

Page 22: ...EMP DEFROST PAM MODULE DIODE STACK COMPRESSOR REACTOR W R B G Y FUSE 250V T3 15A GR BL OR MOTOR FAN How to release locking terminals To release the terminals press the locking lever and pull Lever The...

Page 23: ...t or open of sensor temperature or incomplete insertion of connector PCB TAN MAIN PCB TAG MAIN FAN MOTOR TAG FAN MOTOR TAN SENSOR TEMP ROOM SENSOR TEMP HEAT EXCHANGER SENSOR TEMP DEFROST SENSOR TEMP D...

Page 24: ...N main fig 1 Resistance of sensor temp power module fig 2 Continuity of current fuse on the PCB TAG main Take off the connector and measure the resistance between 3 and 4 in the connector table 4 15 3...

Page 25: ...ompressor check the damage of piping excess gas check the resistance of power module see fig 7 see fig 8 see fig 9 normal accident of compressor accident of PCB TAG main accident of power module take...

Page 26: ...Sensor temp discharge table 4 Sensor temp power module Push emergency operation switch and hold for more than 10 seconds while unit is not operated and release the switch when you hear three beeps Yo...

Page 27: ...ing terminals Lever To release the terminals press the locking lever and pull The terminal tab and the connector 24 with marking in the drawing is not for any use WIRING DIAGRAM TAN TAG A53EWI TAN A53...

Page 28: ...echarge the 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...

Page 29: ...A MPa 1 5 2 2 5 3 3 5 4 4 5 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 AIR TEMPERATURE INDOOR 2...

Page 30: ...SURE A MPa 2 5 3 3 5 2 4 4 5 5 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 AIR TEMPERATURE INDOO...

Page 31: ...URE A MPa 3 5 4 4 5 5 5 5 6 6 5 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 5 10 15 20 25 30 20 25 30 35 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 AIR TEMPERATURE INDO...

Page 32: ...31 ELECTRIC CIRCUIT DIAGRAM TAN A28EWI TAN A32EWI...

Page 33: ...32 ELECTRIC CIRCUIT DIAGRAM TAN A53EWI...

Page 34: ...33 ELECTRIC CIRCUIT DIAGRAM TAG A28EWI TAG A32EWI...

Page 35: ...34 ELECTRIC CIRCUIT DIAGRAM TAG A53EWI...

Page 36: ...35 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 EXPLODED VIEW INDOOR UNIT TAN A28EWI TAN A32EWI...

Page 37: ...36 EXPLODED VIEW INDOOR UNIT TAN A53EWI 11 9 16 15 18 16 10 12 13 14 6 2 1 4 23 5 30 29 3 7 22 21 19 25 24 32 31 27 28 26 8 20 17 33...

Page 38: ...37 EXPLODED VIEW OUTDOOR UNIT 28 26 1 5 6 2 3 19 31 11 12 4 16 10 13 15 8 23 14 22 18 17 20 25 24 30 29 9 21 7 27 TAG A28EWI TAG A32EWI...

Page 39: ...38 EXPLODED VIEW INDOOR UNIT TAG A53EWI 16 10 15 11 12 8 9 31 30 22 29 14 24 19 18 20 21 17 23 13 4 3 26 2 5 1 27 28 6 7 25...

Page 40: ...C R 0 0 0 2 4 0 0 1 0 0 C R 5 1 Y S S A N A P N I A R D 0 8 6 2 2 0 0 2 0 8 6 2 2 0 0 2 6 1 R E V U O L R O T O M 0 0 3 0 0 2 L 0 0 3 0 0 2 L 7 1 N W O D P U R E V U O L 1 4 0 1 3 0 0 8 1 1 C R 1 4 0...

Page 41: ...6 1 R E V U O L R O T O M 0 0 3 0 0 2 L 7 1 N W O D P U R E V U O L 1 4 0 1 3 0 0 8 1 1 C R 8 1 E S O H N I A R D 0 0 0 1 0 2 C 9 1 Y S S A R O T A R O P A V E 9 0 0 0 5 0 0 8 1 1 C R 0 2 R E T L I F...

Page 42: ...9 0 0 0 2 0 9 2 4 1 0 0 2 5 1 R E B B U R F O O R P N O I T A R B I V 0 4 1 4 0 0 A 0 4 1 4 0 0 A 6 1 D R O C E R U T X I F 8 0 2 V P 2 2 5 2 E A 8 0 2 V P 2 2 5 2 E A 7 1 Y S S A E V L A V Y A W 4 0...

Page 43: ...T A M F O O R P D N U O S 1 1 0 8 7 0 0 8 3 1 E A 5 1 L A I L E T A M F O O R P D N U O S 1 1 0 2 7 0 0 8 3 1 E A 6 1 R E B B U R F O O R P N O I T A R B I V 0 5 0 4 0 0 A 7 1 D R O C E R U T X I F 8...

Page 44: ...ISSUED JUL 2004 RA 24 1 Printed in Japan...

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