Toyotomi TAG-A32IV Service Manual
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Toyotomi TAG-A32IV Service Manual

Toyotomi TAG-A32IV Service Manual

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SERVICE MANUAL
ROOM AIR CONDITIONER
TAN/TAG-A28IV
TAN/TAG-A32IV
TAN/TAG-A53IV
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
CONTENTS

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  • Page 1: Table Of Contents

    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) ..............

  • Page 2: Specification

    SPECIFICATION INDOOR OUTDOOR Unit TAN-A28IV TAG-A28IV Cooling Capacity BTU/h 9,000(4,400-10,600) – Heating Capacity BTU/h 11,000(4,800-12,300) – Moisture Removal – phase Single Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; Air circulation (at High) – m/min Heating ;...
  • Page 3 SPECIFICATION INDOOR OUTDOOR Unit TAN-A28IV TAG-A28IV Type Cross-flow Fan Propeller Fan Air Circulation Motor Type Induction (4-pole) Induction (6-pole) Rated Output Plate fin configuration,forced draft Heat Exchanger 18.1FPI 19.5FPI Capillary Tube Refrigerant Control Device – 850(30.0) – Refrigerant (R410A )
  • Page 4 SPECIFICATION INDOOR OUTDOOR Unit TAN-A32IV TAG-A32IV Cooling Capacity BTU/h 11,300(4,800-11,900) – Heating Capacity BTU/h 12,500(6,600-14,300) – Moisture Removal – phase Single Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; Air circulation (at High) – m/min Heating ; Cooling ;...
  • Page 5 SPECIFICATION INDOOR OUTDOOR Unit TAN-A32IV TAG-A32IV Type Cross-flow Fan Propeller Fan Air Circulation Motor Type Induction (4-pole) Induction (6-pole) Rated Output Plate fin configuration,forced draft Heat Exchanger 19.5FPI 19.5 FPI Capillary Tube Refrigerant Control Device – 850(30.0) – Refrigerant (R410A ) g (oz) Thermostat Electronic Control...
  • Page 6 SPECIFICATION INDOOR OUTDOOR Unit TAN-A53IV TAG-A53IV Cooling Capacity BTU/h 17,700(5,100-18,000) – Heating Capacity BTU/h 23,000(5,000-25,000) – Moisture Removal – phase Single Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; 11.5 Air circulation (at High) – m/min Heating ;...
  • Page 7 SPECIFICATION INDOOR OUTDOOR Unit TAN-A53IV TAG-A53IV Type Cross-flow Fan Propeller Fan Air Circulation Motor Type DC brushless (8-pole) Induction (6-pole) Rated Output Plate fin configuration,forced draft Heat Exchanger 21.2FPI 18.1FPI Expansion Valve Refrigerant Control Device – 1200(42.3) – Refrigerant (R410A ) g (oz) Thermostat Electronic Control...

  • Page 8: Functions

    FUNCTIONS REMOTE-CONTROL TRANSMITTER INDOOR UNIT Sensing the room temperature TAN-A28IV TAN-A53IV TAN-A32IV Room temperature sensor (thermistor) ON/OFF Time delay safety control Operation mode selection Restarting is inhibited for approximately 3 minutes. COOL Indoor fan speed control HEAT AUTOMATIC High, Med, Low...

  • Page 9: Outdoor Unit

    FUNCTIONS OUTDOOR UNIT Hot-start control (heating) The indoor fan stops until the evaporator piping temperature will be reached. Anti-freezing control for the evaporator Compressor will be stopped when the evapolator’s piping temperature is below 2°C for one minute. Compressor will be restarted when the evaporator’s piping temperature is above 2°C.

  • Page 10: Service Function Explanation

    SERVICE FUNCTION EXPLANATION EMERGENCY AND TEST OPERATION Emergency Operation Use this operation only when the remote controller is out of order or lost. • When the emergency operation switch is pressed, beep starts once, which • Beep means the start of this operation. In this operation, the system automatically selects the operation modes, cooling •...

  • Page 11: Operation Details

    • In Swing Mode, the louver automatically moves up and down within the certain range, as the illustration below. • There is two different ranges of louver swinging; one is of cooling & dry mode operation and the other is of heating operation. TAN-A28IV TAN-A32IV Standard Position...

  • Page 12: Cooling Mode Operation

    OPERATION DETAILS TIME DELAY SAFETY CONTROL FUNCTION - FOR PROTECTION OF COMPRESSOR Compressor will not restart, in any operation modes, for 3 minutes after its stop. • Compressor does not stop during the first 1 seconds of its operation even if the room temperature reaches •...

  • Page 13: Dry Mode Operation

    OPERATION DETAILS DRY 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. •...

  • Page 14: Heating Mode Operation

    OPERATION DETAILS HEATING 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 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. •...
  • Page 15 OPERATION DETAILS DEFROSTING OPERATION(FOR OUTDOOR UNIT HEAT EXCHANGER) Defrosting operation is controlled by the temperature 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. •...
  • Page 16 OPERATION DETAILS COMPRESSOR STARTING SEQUENCE 10Hz T(Max) Start Frequency Model Number Time T(Max) 48Hz 58Hz 68Hz 54Hz 32Hz Cooling 1.5min. 1.5min. 30min. limitless TAN/TAG-A28IV 48Hz 58Hz 74Hz 74Hz 32Hz Heating 1.5min. 1.5min. limitless 48Hz 58Hz 72Hz 66Hz 32Hz Cooling 1.5min. 1min.

  • Page 17: Troubleshooting Guide

    TROUBLESHOOTING GUIDE FOR YOUR SAFETY USE FOR YOUR SAFETY USE TAN: indoor unit TAG : outdoor unit For the safety and proper use and handling of the product, please read and follow the instructions carefully. The meaning of the marks below are as follows. Danger Improper use will cause the significant risk of death or serious injury of the user.
  • Page 18 TROUBLESHOOTING GUIDE INDICATION LAMP INDICATION LAMP Micro computer self-diagnose the points of the troubles and inform it by the combination of the status (On, Flush, or Off) of three lamp indicators on the front panel of the indoor unit. INDICATION LAMP ALARM METHOD OF CHECK APPEARANCE, PORTION, PARTS...
  • Page 19 TROUBLESHOOTING GUIDE INDICATION LAMP ALARM APPEARANCE, PORTION, PARTS METHOD OF CHECK POWER TIMER OPERATE INDICATION TIME SEEMED WRONG (press the ON/OFF button of remote controller in case of reset) (green) (yellow) (green) check the point of leakage measure the pressure of compressor GAS LEAKAGE during fixed operation (emergency and test operation) SENSOR, TEMP.
  • Page 20 TROUBLESHOOTING GUIDE ELECTRIC CHARACTER ELECTRIC CHARACTER ftable 2 Sensor, temp. defrost ftable 1 Sensor, temp. room ftable 3 Sensor, temp. discharge Sensor, temp. heat exchanger Sensor, temp. outdoor Resistance (k Temp. (°C) Resistance (k Temp. (°C) Temp. (°C) Resistance (k 1,130 ftable 4 Sensor, temp.

  • Page 21: Wiring Diagram

    TROUBLESHOOTING GUIDE WIRING DIAGRAM TAN-A28IV TAN-A32IV MOTOR(FAN) BL R TRANSFORMER IONIZER (RECEIVER FUSE &DISPLAY) (T3.15A) MANUAL SWITCH SENSOR (TEMP.,ROOM) SENSOR PCB(MAIN) (TEMP.,HEAT EXCHANGER) POWER SOURCE MOTOR (LOUVER) TERMINAL BLOCK EARTH OUTDOOR UNIT TERMINAL TAG-A28IV TAG-A32IV MOTOR (FAN) SENSOR COMPRESSOR (TEMP.,DISCHARGE) SENSOR 4WAY V.
  • Page 22 TROUBLESHOOTING GUIDE WIRING DIAGRAM MOTOR (FAN) TAN-A53IV SENSOR (TEMP.,HEAT EXCHANGER) EARTH TERMINAL SENSOR (TEMP.,ROOM) (CONTROLLER) (RECEIVER &DISPLAY) MANUAL FUSE SWITCH 250V T3.15A MOTOR (LOUVER) POWER SOURCE TERMINAL 3 2 1 BLOCK EARTH TERMINAL OUTDOOR UNIT TAG-A53IV MOTOR SENSOR (FAN) SENSOR (TEMP.,DISCHARGE) (TEMP., COMPRESSOR...

  • Page 23: Performance Curve Diagram

    PERFORMANCE CURVE DIAGRAM REMARKS FOR GAS PRESSURE CHECK AND CHARGING Gas pressure is to be measured at TEST OPERATION for cooling or EMERGENCY OPERATION for heating. (It is operated for 30 minutes at fixed frequency.) If you find substantial diffrence in performance compared with PERFORMANCE CURVE as shown next, recharge the refrigerant.
  • Page 24 PERFORMANCE CURVE DIAGRAM TAN/TAG-A28IV COOLING CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY60% AIR TEMPERATURE INDOOR-OUTDOOR HEATING AIR-TEMPERATURE INDOOR 20°C CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY50% AIR TEMPERATURE-OUTDOOR – 23 –...
  • Page 25 PERFORMANCE CURVE DIAGRAM TAN/TAG-A32IV COOLING CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY60% AIR TEMPERATURE INDOOR-OUTDOOR HEATING AIR-TEMPERATURE INDOOR 20°C CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY50% AIR TEMPERATURE-OUTDOOR – 24 –...
  • Page 26 PERFORMANCE CURVE DIAGRAM TAN/TAG-A53IV COOLING CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY60% AIR TEMPERATURE INDOOR-OUTDOOR HEATING AIR-TEMPERATURE INDOOR 20°C CURRENT (°C) TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE (°C) HUMIDITY50% AIR TEMPERATURE-OUTDOOR – 25 –...

  • Page 27: Electric Circuit Diagram

    ELECTRIC CIRCUIT DIAGRAM TAN-A28IV, TAN-A32IV – 26 –...
  • Page 28 ELECTRIC CIRCUIT DIAGRAM TAN-A53IV – 27 –...

  • Page 29: Thermistor Resistance Chart

    THERMISTOR RESISTANCE CHART SENSOR, ROOM TEMPERATURE TAN SENSOR, ROOM TEMPERATURE B CONSTANT 4150 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • °C STANDARD TEMPERATURE 25.0...
  • Page 30 THERMISTOR RESISTANCE CHART TAN SENSOR, ROOM TEMPERATURE B CONSTANT 4150 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 25.0°C •...
  • Page 31 THERMISTOR RESISTANCE CHART SENSOR, HEAT EXCHANGER TEMPERATURE TAN SENSOR, HEAT EXCHANGER TEMPERATURE B CONSTANT 3700 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 25.0°C •...
  • Page 32 THERMISTOR RESISTANCE CHART TAN SENSOR, HEAT EXCHANGER TEMPERATURE B CONSTANT 3700 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 25.0°C •...
  • Page 33 THERMISTOR RESISTANCE CHART SENSOR, DEFROST TEMPERATURE & OUTDOOR TEMPERATURE TAG SENSOR, DEFROST TEMPERATURE & OUTDOOR TEMPERATURE B CONSTANT 3700 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 25.0°C •...
  • Page 34 THERMISTOR RESISTANCE CHART TAG SENSOR, DEFROST TEMPERATUR & OUTDOOR TEMPERATUREE B CONSTANT 3700 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 25.0°C •...
  • Page 35 THERMISTOR RESISTANCE CHART SENSOR, DISCHARGE TEMPERATURE TAG SENSOR, DISCHARGE TEMPERATURE B CONSTANT 4250 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATURE 80.0°C •...
  • Page 36 THERMISTOR RESISTANCE CHART TAG SENSOR, DISCHARGE TEMPERATURE B CONSTANT 4250 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • STANDARD TEMPERATUR 80.0°C •...

  • Page 37: Exploded View (Indoor Unit)

    EXPLODED VIEW ( INDOOR UNIT ) TAN-A28IV accessories – 68 –...
  • Page 38 EXPLODED VIEW ( INDOOR UNIT ) TAN-A32IV accessories – 69 –...
  • Page 39 EXPLODED VIEW ( INDOOR UNIT ) TAN-A53IV accessories – 70 –...

  • Page 40: Exploded View (Outdoor Unit)

    EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A28IV TAG-A32IV accessories – 71 –...
  • Page 41 EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A53IV – 72 –...

  • Page 42: Parts List (Indoor Unit)

    PARTS LIST ( INDOOR UNIT ) PARTS NAME TAN-A28IV TAN-A32IV TAN-A53IV CONTROLLER ASSY. 2049029 0 2050051 0 2049049 1 PCB (MAIN) 3007992 0 3007993 0 3007994 0 PCB (RECEIVER & DISPLAY) 3005551 0 3005629 0 SENSOR 3005507 0 (TEMP,ROOM & HEAT EXCHAGER)

  • Page 43: Parts List (Outdoor Unit)

    PARTS LIST ( OUTDOOR UNIT ) PARTS NAME TAG-A28IV TAG-A32IV TAG-A53IV TOP PANEL ASSY. 2044497 0 FRONT PANEL 2041361 2 COMPRESSOR 3005642 0 3006168 0 3008337 0 BOTTOM PANEL ASSY. 2041521 2 2043715 3 2049057 0 RIGHT SIDE PANE LASSY. 2041519 2 LEFT SIDE PANE LASSY.
  • Page 44 RA-53-[1] ISSUED MAR.2007 Printed in Japan...

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