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SERVICE MANUAL
ROOM AIR CONDITIONER
SPECIFICATION .................................................................... 1
FUNCTIONS .......................................................................... 5
SERVICE FUNCTION EXPLANATION .................................. 7
OPERATION DETAILS ........................................................... 8
TROUBLESHOOTING GUIDE ............................................. 17
PERFORMANCE CURVE DIAGRAM .................................. 25
SCHEMATIC DIAGRAM AND
THERMISTOR RESISTANCE CHART .................................
ELECTRIC CIRCUIT DIAGRAM ..........................................
EXPLODED VIEW (INDOOR UNIT) ....................................
EXPLODED VIEW (OUTDOOR UNIT) ................................
PARTS LIST (INDOOR UNIT) ..............................................
PARTS LIST (OUTDOOR UNIT) ..........................................
TAN/TAG-A53EW
TAN/TAG-A70EW
CONTENTS
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Summary of Contents for Toyotomi TAN-A53EW
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Page 1: Table Of Contents
SERVICE MANUAL ROOM AIR CONDITIONER TAN/TAG-A53EW TAN/TAG-A70EW CONTENTS SPECIFICATION ..............1 FUNCTIONS ................5 SERVICE FUNCTION EXPLANATION ........7 OPERATION DETAILS ............8 TROUBLESHOOTING GUIDE ..........17 PERFORMANCE CURVE DIAGRAM ........25 SCHEMATIC DIAGRAM AND THERMISTOR RESISTANCE CHART ......... ELECTRIC CIRCUIT DIAGRAM .......... EXPLODED VIEW (INDOOR UNIT) ........ -
Page 2: Specification
SPECIFICATION TAN/TAG-A53EW INDOOR OUTDOOR Unit TAN-A53EW TAG-A53EW 16,900 Cooling Capacity BTU/h – Heating Capacity BTU/h 20,500 – Moisture Removal – Single phase Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; 12.0 Air circulation (at High) –... - Page 3 SPECIFICATION INDOOR OUTDOOR Unit TAN-A53EW TAG-A53EW 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 19.5 FPI – Capilary Tube Refrigerant Control Device 1,460(51.5) g (oz) –...
- Page 4 SPECIFICATION TAN/TAG-A53EW INDOOR OUTDOOR Unit TAN-A70EW TAG-A70EW 22,000 Cooling Capacity BTU/h – Heating Capacity BTU/h 24,500 – Moisture Removal – phase Single Power source SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Cooling ; 14.0 Air circulation (at High) – m/min Heating ;...
- Page 5 SPECIFICATION INDOOR OUTDOOR Unit TAN-A70EW TAG-A70EW 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 – Capillary Tube Refrigerant Control Device 1,700(60.0) 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 Restarting is inhibited for approximately Operation mode selection 3 minutes. AUTOMATIC COOL Indoor fan speed control HEAT High, Med, Low CIRCULATER Operation indication lamps (LED) Air flow selection (GREEN) .. -
Page 7: Outdoor Unit
FUNCTIONS OUTDOOR UNIT Hot-start control (heating) The indoor fan stops until the evaporator piping temperature will be reached. Overload protection 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 Compressor overload protector... -
Page 8: 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, the “Pi” sound starts once, which means the start of this operation. •... -
Page 9: Operation Details
OPERATION DETAILS TIMER OPERATION ON Timer operation • Press the ON/OFF switch. • Set the “ON Time” : Press the “TIME ADJ” button twice. Adjust the time with the “ ” button. Press the “TIME ADJ” button twice.The setting of “ON Time” is complete and the present time appears on the LCD. •... -
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 3 minutes of its operation even if the room temperature reaches to the designated temperature, except changing setting temperature. -
Page 11: Dry Mode Operation
OPERATION DETAILS • Method of anti-freezing control of heat-exchanger(indoor) When the sensor(heat-exchanger) detects the temperature below 2°C for the duration of one minute,the compressor stops the operation. After that,the compressor will automatically resume the operation when the sensor(heat-exchanger) detects the temperature 2°C and above. TEMPERATURE 1min 3min... -
Page 12: Heating Mode Operation
OPERATION DETAILS HEATING MODE OPERATION • When room temperature is raised to +4°C higher than the designated temperature, compressor stops. • When room temperature gets less than +3.3°C higher than the designated temperature, compressor turns on. • At the start of heating operation, if the room temperature is less than +10°C, additional +1°C is set to the temperature designated by the remote controller. - Page 13 OPERATION DETAILS • Fan speed control when “Auto” is selected in fan mode When “Auto” is selected,the fan speed is automatically controlled according to the difference between the room and designated temp.+4°C. ROOM TEMP. DESIGNATED TEMP.+5 INDOOR FAN Super low •...
- Page 14 OPERATION DETAILS • Method of overload control by checking the operating current CURRENT OUTDOOR FAN TAN/TAG-A53EW 7.6A 8.0A 11.1A 10.8A TAN/TAG-A70EW – 13 –...
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Page 15: Defrosting Operation
OPERATION DETAILS DEFROSTING OPERATION • Defrosting operation is controlled by room temperature, temperature of indoor heat exchanger and timer switch. • Defrosting operation start when (a) 50 minutes pass after the start of heating operation or after the completion of previous defrosting operation, and while compressor is running, the temperature of indoor heat exchanger falls below “room temperature +14°C”. -
Page 16: Refrigeration Cycle Diagram
OPERATION DETAILS TAN/TAG-A53EW REFRIGERATION CYCLE DIAGRAM INDOOR UNIT OUTDOOR UNIT REFRIGERANT PIPING CAPILLARY TUBE STRAINER CAPILLARY TUBE 2-WAY VALVE CHECK VALVE HEAT EXCHANGER HEAT EXCHANGER REFRIGERANT PIPING MUFFLER 4-WAY VALVE 3-WAY VALVE REFRIGERANT FLOW COMPRESSOR COOLING MODE HEATING MODE ACCUMULATOR –... - Page 17 OPERATION DETAILS TAN/TAG-A70EW REFRIGERATION CYCLE DIAGRAM INDOOR UNIT OUTDOOR UNIT REFRIGERANT CAPILLARY TUBE PIPING STRAINER 2-WAY VALVE HEAT EXCHANGER HEAT EXCHANGER REFRIGERANT PIPING MUFFLER 4-WAY VALVE 3-WAY VALVE REFRIGERANT FLOW COMPRESSOR COOLING MODE HEATING MODE ACCUMULATOR – 16 –...
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Page 18: 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 19 TROUBLESHOOTING GUIDE DRY & COOLING OPERATION REMOTE CONTROLLER POWER TIMER OPERATION POWER SUPPLY check the plug inserted into the outlet and the power supply (green) (yellow) (green) if the battery is dead or failure in remote controller REMOTE CONTROL change to new one "POWER LAMP"...
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Page 20: Heating Operation
TROUBLESHOOTING GUIDE HEATING OPERATION POWER SUPPLY check the plug inserted into the outlet and the power supply REMOTE CONTROLLER POWER TIMER OPERATION if the battery is dead or failure in remote controller (green) (yellow) (green) REMOTE CONTROLLER change to new one check the fuse by eyes or cheak the electric continuity by tester FUSE (3.15A) "POWER LAMP"... - Page 21 TROUBLESHOOTING GUIDE CHECK A FOLLOWING STEPS fig. 2 Resistance of louver motor fig. 3 Voltage of indoor motor,fan fig. 4 Current of compressor (operating in heating mode) attention electric shock table 4 Current of wiring in terminal more than 50Hz about 20 A yellow black...
- Page 22 TROUBLESHOOTING GUIDE HOW TO DETACH CONTROL BOX AND MAIN CONTROLLER How to remove the control box assembly (1) Remove the wiring cover and pull out the connecting cables. (2) Pull out the connector of the Indoor fan motor. (3) Pull out the connector of PCB(receiver&display). (4) Pull out the connector of the vertical louver motor.
- Page 23 TROUBLESHOOTING GUIDE BLOCK DIAGRAM TAN-A53EW, TAN-A70EW – 22 –...
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Page 24: Wiring Diagram
TROUBLESHOOTING GUIDE WIRING DIAGRAM TAN-A53EW, TAN-A70EW Marking in the drawing is not for any use. TAG-A53EW TAG-A70EW TAN : INDOOR UNIT : BLACK TAG : OUTDOOR UNIT : BLUE : BROWN : GREEN : RED : WHITE : YELLOW – 23 –... - Page 25 TROUBLESHOOTING GUIDE OVERHEAT PREVENTIVE RELAY(OLR,INNERPROTECTOR) Any addition of refrigerant? INNERPROTECTOR Recharge rated weight. CHECK CONNECTION BETWEEN WHITE - BLACK. TAG fan rotates during cooling Refer to trouble shooting. mode operation? (TAG fan starts to retate) BLACK Any gas leakage? After repair, fill up prescribed gas. WHITE Firstly cut down power source.
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Page 26: 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. If you find substantial difference in performance compared with PERFORMANCE CURVE as shown above, recharge the refrigerant. - Page 27 PERFORMANCE CURVE DIAGRAM TAN/TAG-A53EW COOLING CURRENT TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE HUMIDITY60% AIR TEMPERATURE INDOOR-OUTDOOR HEATING AIR-TEMPERATURE INDOOR 20 CURRENT TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE HUMIDITY50% AIR TEMPERATURE-OUTDOOR – 26 –...
- Page 28 PERFORMANCE CURVE DIAGRAM TAN/TAG-A70EW COOLING CURRENT TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE HUMIDITY60% AIR TEMPERATURE INDOOR-OUTDOOR HEATING AIR-TEMPERATURE INDOOR 20 CURRENT TEMPERATURE BLOW OUT (MPa) SERVICE PORT PRESSURE HUMIDITY50% AIR TEMPERATURE-OUTDOOR – 27 –...
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Page 29: Thermistor Resistance Chart
THERMISTOR RESISTANCE CHART SENSOR, ROOM TEMPERATURE TAN SENSOR, ROOM TEMPERATURE B CONSTANT ......... 4200 STANDARD TEMPERATURE ..25.0°C STANDARD RESIST ANCE ..... 23k ( T ) ( T ) ( T ) – 35 –... - Page 30 THERMISTOR RESISTANCE CHART ( T ) ( T ) ( T ) – 36 –...
- Page 31 THERMISTOR RESISTANCE CHART SENSOR, EVA TEMPERATURE TAN SENSOR, ROOM TEMPERATURE B CONSTANT ......... 3700 STANDARD TEMPERATURE ..25.0°C STANDARD RESIST ANCE ..... 10k ( T ) ( T ) ( T ) – 37 –...
- Page 32 THERMISTOR RESISTANCE CHART ( T ) ( T ) ( T ) – 38 –...
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Page 33: Electric Circuit Diagram
ELECTRIC CIRCUIT DIAGRAM TAN/TAG-A53EW, TAN/TAG-A70EW – 43 –... -
Page 34: Exploded View (Indoor Unit)
EXPLODED VIEW ( INDOOR UNIT ) TAN-A53EW TAN-A70EW accessories – 44 –... -
Page 35: Exploded View (Outdoor Unit)
EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A53EW – 45 –... - Page 36 EXPLODED VIEW ( OUTDOOR UNIT ) TAG-A70EW – 46 –...
- Page 37 PARTS LIST ( INDOOR UNIT ) & & – 47 –...
- Page 38 PARTS LIST ( OUTDOOR UNIT ) – 48 –...
- Page 39 RA-21-[1] ISSUED JUL.2004...