Table of Contents
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SERVICE MANUAL
ROOM AIR CONDITIONER
TAN/ TAG-A28FWIS
TAN/ TAG-A32FWIS
SPECIFICATION .................................................................... 1
FUNCTIONS .......................................................................... 5
SERVICE FUNCTION EXPLANATION .................................. 7
OPERATION DETAILS ........................................................... 8
TROUBLESHOOTING GUIDE ............................................. 13
PERFORMANCE CURVE DIAGRAM .................................. 19
ELECTRIC CIRCUIT DIAGRAM .......................................... 22
EXPLODED VIEW (INDOOR UNIT) .................................... 24
EXPLODED VIEW (OUTDOOR UNIT) ................................ 25
PARTS LIST (INDOOR UNIT) .............................................. 27
PARTS LIST (OUTDOOR UNIT) .......................................... 28
CONTENTS
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Summary of Contents for Toyotomi TAN-A28FWIS
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Page 1: Table Of Contents
SERVICE MANUAL ROOM AIR CONDITIONER TAN/ TAG-A28FWIS TAN/ TAG-A32FWIS CONTENTS SPECIFICATION ..............1 FUNCTIONS ................5 SERVICE FUNCTION EXPLANATION ........7 OPERATION DETAILS ............8 TROUBLESHOOTING GUIDE ..........13 PERFORMANCE CURVE DIAGRAM ........19 ELECTRIC CIRCUIT DIAGRAM .......... 22 EXPLODED VIEW (INDOOR UNIT) ........24 EXPLODED VIEW (OUTDOOR UNIT) ........ -
Page 2: Specification
SPECIFICATION INDOOR OUTDOOR Unit TAN-A28FWIS TAG-A28FWIS 9,000(5,700-10,000) Cooling Capacity BTU/h – 11,000(5,700-12,500) Heating Capacity BTU/h – Moisture Removal – Single phase 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-A28FWIS TAG-A28FWIS 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 860(30.3) g (oz) –...
- Page 4 SPECIFICATION INDOOR OUTDOOR Unit TAN-A32FWIS TAG-A32FWIS 11,000(5,700-12,000) Cooling Capacity BTU/h – Heating Capacity BTU/h 13,500(5,700-14,500) – Moisture Removal – Single phase Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; Air circulation (at High) – m/min 10.3 Heating ;...
- Page 5 SPECIFICATION INDOOR OUTDOOR Unit TAN-A32FWIS TAG-A32FWIS 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 16.9 FPI – Capillary Tube Refrigerant Control Device 1,100(38.8) g (oz) – Refrigerant (R410A ) Thermostat Electronic Control...
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Page 6: Functions
FUNCTIONS REMOTE-CONTROL TRANSMITTER INDOOR UNIT Sensing the room temperature 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 Air flow selection Operation indication lamps (LED) AUTOMATIC ELECT... -
Page 7: 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 8: Service Function Explanation
SERVICE FUNCTION EXPLANATION EMERGENCY AND TEST OPERATION Emergency Operation Beep 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 • means the start of this operation. In this operation, the system automatically selects the operation modes, cooling •... -
Page 9: Operation Details
OPERATION DETAILS TIMER OPERATION ON Timer operation Press the ON/OFF switch. Right after replacing new batteries, set the present time in advance. • Set the “ON Time” : Press the “TIME ADJ” button twice. • Adjust the time with the “ ”... -
Page 10: 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 6 minutes of its operation even if the room temperature reaches to •... -
Page 11: Dry Mode Operation
OPERATION DETAILS DRY MODE OPERATION • Compressor stops when the room temperature fall to 0.3°C lower than the designated temperature continuously for 2 minutes. • Compressor restarts when room temperature rises to the designated temperature. • The operating frequency of the compressor is determined according to the room temperature (see the diagram below). -
Page 12: 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 6 minutes and the room temperature becomes 4.7°C higher than it was set. The compressor will re-start when room temperature becomes 3.7°C higher than it was set. •... - Page 13 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. •...
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Page 14: Troubleshooting Guide
TROUBLESHOOTING GUIDE 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 15 TROUBLESHOOTING GUIDE 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 POWER...
- Page 16 TROUBLESHOOTING GUIDE CHECK A FOLLOWING STEPS 〔fig. 1〕Continuity of current fuse on the TAG PCB (main) FUSE 0Ω 0Ω FUSE Take off the connector 2 on the TAG PCB (main), and check the continuity. 〔fig. 2〕 Voltage of TAN fan motor on the TAN PCB (main) 〔fig.
- Page 17 TROUBLESHOOTING GUIDE METHOD OF CHECK DC excessive current detection and in case of irregular work of compressor Flow Chart check the damage of piping, excess gas check the resistance of PCB(Power module) [see fig.5] normal accident of PCB(Power module) check the voltage (230V) between 1 and 2 in terminal of TAG normal check the power supply wiring...
- Page 18 TROUBLESHOOTING GUIDE ELECTRIC CHARACTER 〔table 2〕Sensor, temp. defrost 〔table 1〕Sensor, temp. room 〔table 3〕Sensor, temp. discharge Sensor, temp. heat exchanger Temp.(°C) Resistance (kΩ) Temp.(°C) Resistance (kΩ) Temp.(°C) Resistance (kΩ) 1,000 DISPLAY OF ERRORS IN THE PAST Push emergency operation switch and hold for more than 10 seconds while unit is not operated and release •...
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Page 19: Wiring Diagram
TROUBLESHOOTING GUIDE WIRING DIAGRAM TAN-A28FWIS TAN-A32FWIS MOTOR(FAN) BL R TRANSFORMER IONIZER (RECEIVER &DISPLAY) FUSE (T3.15A) MANUAL SWITCH SENSOR (TEMP.,ROOM) SENSOR (CONTROLLER) (TEMP.,HEAT EXCHANGER) POWER SOURCE MOTOR (LOUVER) TERMINAL BLOCK EARTH ↓ OUTDOOR UNIT TERMINAL TAG-A28FWIS TAG-A32FWIS SENSOR SENSOR (TEMP.,DEFROST) (TEMP.,DISCHARGE) -
Page 20: Performance Curve Diagram
PERFORMANCE CURVE DIAGRAM REMARKS FOR GAS PRESSURE CHECK AND CHARGING Gas pressure is to be measured at COMPULSORY COOLING OPERATION for cooling or EMERGENCY OPERATION for heating. (It is operated for 30 minutes at 58Hz fixed frequency.) If you find substantial diffrence in performance compared with PERFORMANCE CURVE as shown next, recharge the refrigerant. - Page 21 PERFORMANCE CURVE DIAGRAM TAN/TAG-A28FWIS 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 – 20 –...
- Page 22 PERFORMANCE CURVE DIAGRAM TAN/TAG-A32FWIS 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 – 21 –...
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Page 23: Electric Circuit Diagram
ELECTRIC CIRCUIT DIAGRAM TAN-A28FWIS, TAN-A32FWIS – 22 –... - Page 24 ELECTRIC CIRCUIT DIAGRAM TAG-A28FWIS, TAG-A32FWIS – 23 –...
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Page 25: Exploded View (Indoor Unit)
EXPLODED VIEW ( INDOOR UNIT ) TAN-A28FWIS TAN-A32FWIS – 24 –... -
Page 26: Exploded View (Outdoor Unit)
EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A28FWIS ×4 – 25 –... - Page 27 EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A32FWIS ×4 – 26 –...
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Page 28: Parts List (Indoor Unit)
PARTS LIST ( INDOOR UNIT ) ← & ← ← & ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ←... -
Page 29: Parts List (Outdoor Unit)
PARTS LIST ( OUTDOOR UNIT ) ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← – 28 –... - Page 30 RA-37-[1] ISSUED MAR.2005 Printed in Japan...