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

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

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

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

Summary of Contents for TAG-A53EW

Page 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 ...

Page 2: ...iameter Length 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 2 mm mm Dimensions mm mm kg Net Weight 3 2 Half Union 1 4 Half Union 1 2 L liquid side 1 4 G gas side 1 2 2 way valve 1 4 3 way valve 1 2 L liquid side 1 4 G gas side 1 2 16 900...

Page 3: ... Refrigerant Control Device g oz Refrigerant R410 A 1 460 51 5 OLR INNER Thermostat Protection Device Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Mold proof 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 Timer Real time dual ON OFF 7 hour OFF TAG A53EW ...

Page 4: ...iameter Length 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 1 4 core wire 2 mm mm Dimensions mm mm kg Net Weight 3 2 Half Union 1 4 Half Union 5 8 L liquid side 1 4 G gas side 5 8 2 way valve 1 4 3 way valve 5 8 L liquid side 1 4 G gas side 5 8 22...

Page 5: ...t Refrigerant Control Device g oz Refrigerant R410A 1 700 60 0 OLR INNER Thermostat Protection Device Air Filter Parts Provided Electronic Control Type Motor Type Rated Output Mold proof 1 Mounting plate 2 Remote controller 3 Battery 2 pcs 4 Remote controller holder 5 Screw cap 2 pcs 6 Drain elbow Timer Real time dual ON OFF 7 hour OFF Specifications are subject to change without notice TAG A70EW ...

Page 6: ...nsor thermistor Time delay safety control Restarting is inhibited for approximately 3 minutes Indoor fan speed control High Med Low Operation indication lamps LED GREEN Light up in operation YELLOW Timer in operation GREEN Outdoor unit operate Dry operation mode Intermittent operation of fan at low speed Room temperature control Maintains the room temperature in accordance with the setting tempera...

Page 7: ... status before power failure is memorized 3 4 minutes after power recovery the unit restarts automatically with previous operation status memorized 3 4 minutes is protective time for compressor Attention Because of Auto Recovery Function if shutting off the power supply during operation the unit may restart irrespective your intention when turning on the power supply next time If the unit is not t...

Page 8: ... control unit Indoor unit Receive Ex factory setting Mode A Ex factory setting Mode A Cut R10 on the PC board Mode B Have J1 on the PC board short circuited by soldering Mode B Receive Not receive Not receive ON APM CLOCK OFF L H M AUTO ON APM CLOCK OFF L H M AUTO J1 Soldering J1 Temperature ABOVE 23 BELOW 23 COOLING HEATING 26 23 CONTINUOUS CONTINUOUS AUTOMATIC AUTOMATIC Operation mode Designated...

Page 9: ... Off Timer once again Sleep Timer Press the SLEEP button until the operating period on the LCD disappears Level Approx 10 degrees Cooling Dry Approx 70 degrees Heating Standard Position Approx 10 degrees Approx 40 degrees Approx 45 degrees Approx 70 degrees Level Swing of Air Flow Cooling Dry Heating AIRFLOW DIRECTION CONTROL Vertical adjustment When ON OFF switch is pressed the vertical louver wi...

Page 10: ... 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 Fan speed control when Auto is selected in fan mode When Auto is selected the fan speed is automatically controlled ac...

Page 11: ...emperature compressor and indoor fan stop The indoor fan restarts at the air flow speed of super low after 3 minutes the compressor stops 4 When the room temperature is raised to 0 7 C higher than the designated temperature the intermittent operation above 2 starts 5 When operating in 2 above if the room temperature becomes 2 7 C higher than the designated the operation 1 above starts Method of an...

Page 12: ... 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 Canceled when the compressor first stops Hot Start Function To prevent the unpleasant cold air to flow the air flow speed is determined as shown belo...

Page 13: ...1 10sec TAN TAG A53EW TAN TAG A70EW 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 Hi Me Lo Super low Lo Hi INDOOR FAN 1 1 3 3 2 0 0 7 1 7 2 0 3 7 2 7 Me ...

Page 14: ... 13 OPERATION DETAILS Method of overload control by checking the operating current ON ON ON OFF OUTDOOR FAN CURRENT I1 7 6A 11 1A I2 8 0A 10 8A I2 OFF I1 TAN TAG A53EW TAN TAG A70EW ...

Page 15: ...is for the protection of compressor from excess current or for the prevention of overheating of indoor heat exchanger exceeds 90 minutes after the start of heating operation or after the completion of previous defrosting operation Condition b Compressor Defrosting starts No judge current Current 5 5A 1 4min 55sec 1min Max 9min 2 Defrosting stops Indoor fan OFF OFF ON OFF Hot start Operation OFF OF...

Page 16: ...Y VALVE 3 WAY VALVE COOLING MODE HEATING MODE 4 WAY VALVE ACCUMULATOR COMPRESSOR REFRIGERANT FLOW OUTDOOR UNIT HEAT EXCHANGER HEAT EXCHANGER STRAINER MUFFLER CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE TAN TAG A53EW REFRIGERATION CYCLE DIAGRAM OPERATION DETAILS ...

Page 17: ...NT PIPING 2 WAY VALVE 3 WAY VALVE COOLING MODE HEATING MODE 4 WAY VALVE STRAINER MUFFLER ACCUMULATOR COMPRESSOR REFRIGERANT FLOW OUTDOOR UNIT HEAT EXCHANGER HEAT EXCHANGER CAPILLARY TUBE TAN TAG A70EW REFRIGERATION CYCLE DIAGRAM OPERATION DETAILS ...

Page 18: ... put the units to earthing works Be sure to check the insulated resistance more than 1MΩ 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 Check Point Check Point Be sure to off the plug when servicing It may cause the risk of electric shock If leakage of refrigerant occur in the install...

Page 19: ...k the resistance of sensor temp heat exchanger see table 1 check the wiring order if the scale of the tester swings instantly to zeroΩ and does not move back to infinity capacitor for TAG fan motor should be replaced NOTE 1 other than described above if the scale of the tester swings instantly to zeroΩ and does not move back to infinity TAG fan motor should be replaced NOTE 1 other than descrived ...

Page 20: ... proper temperature in remote controller check the resistance by tester see table 2 check by eyes check proper voltage of power supply and use an exclusive power supply check proper voltage of power supply and use an exclusive power supply check the restarting operation of compressor after passing 3 minutes if the scale of the tester swings instantly to zeroΩ and does not move back to infinity cap...

Page 21: ...ling mode Check the voltage between 2 and 3 in terminal table 4 Current of wiring in terminal 50Hz more than about 20 A Check the current of wiring in terminal 1 and if the current stays at the level above shown compressor is defective heating operation only Check the DC voltage in each pair of pins on the black side of the indoor main controller during cooling operation in the following combinati...

Page 22: ...Its fixing position 9 If no sufficient space in the right side of the unit detaching the upper right hook of the drain pan and pulling the right side of pan slightly pull out the whole control box this side 1 wiring cover 5 6 7 Upper fixing hook 10 4 3 11 13 2 9 11 8 14 12 How to remove the control box assembly How to detach PCB main controller 10 Pull out the connector of sensors temp room heat e...

Page 23: ...OR INDOOR FAN MOTOR FAN MOTOR PULSE BUZZER RL1 RL2 PC1 DQ33 PC35 PC34 SWITCHING POWER SUPPLY LOUVER CONTROL CHANGE AUTO RECOVERY OFF CHANGE PCB RECEIVER DISPLAY REMOTE CONTROLLER A B MODE CHANGE MANUAL SW EXTERNAL CONTROL CHANGE SESOR TEMP ROOM SESOR TEMP EVA REMOTE CONTROL TRANSMITTER LOUVER MOTOR AC POWER LINE M M 1 1 2 2 3 3 4 4 S M M HYBRID IC INSULATION ...

Page 24: ...UTDOOR UNIT BL FUSE 3 15A PCB CONTROLLER B B BR W R BR B BL BL TAG A70EW TAG A53EW EARTH TERMINAL INDOOR UNIT W Ｂ R S C Ｒ MOTOR FAN Ｗ G Y CAPACITOR 4 0μF 500VAC COMPRESSOR 4 WAY VALVE B W CAPACITOR 60μF 370VAC BR Ｂ B Ｗ TERMINAL BLOCK 4 3 2 1 EARTH TERMINAL INDOOR UNIT W BL R S C Ｒ MOTOR FAN Ｗ G Y CAPACITOR 2 5μF 440VAC COMPRESSOR 4 WAY VALVE B Ｗ CAPACITOR 40μF 370VAC BR BL B W TERMINAL BLOCK 4 3 2...

Page 25: ... does not operate Cause YES Any gas leakage NO Firstly cut down power source when the temp of above part of the compressor is below 50 C does the OLR have electric continuity below table See trouble shooting compressor YES After repair fill up prescribed gas 3 4 4 5 3 2 1 YES Any addition of refrigerant NO 1 YES TAG fan rotates during cooling mode operation NO 2 BLACK RED WHITE CHECK CONNECTION BE...

Page 26: ...charging 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 Model Pipin...

Page 27: ... 11 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 4 0 6 0 8 1 0 1 2 SERVICE PORT PRESSURE A 1 4 MPa 12 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 AIR TEMPERATURE INDOOR 20 2 5 3 0 3 5 30 35 40 45 50 55 60 9 11 10 7 8 6 MPa CURRENT TEMPERATURE BLOW OUT SERVICE PORT PRESSURE A ...

Page 28: ... 13 CURRENT TEMPERATURE BLOW OUT AIR TEMPERATURE INDOOR OUTDOOR HUMIDITY60 0 4 0 6 0 8 1 0 1 2 1 4 SERVICE PORT PRESSURE A MPa 5 10 15 20 AIR TEMPERATURE OUTDOOR HUMIDITY50 AIR TEMPERATURE INDOOR 20 2 5 3 0 3 5 30 35 40 45 50 55 60 10 12 14 11 13 8 9 MPa CURRENT TEMPERATURE BLOW OUT SERVICE PORT PRESSURE A ...

Page 29: ... 5 5 3 2 0 0 2 5 0 E 3 1 8 2 0 5 2 4 0 E 3 6 2 7 0 5 2 4 0 E 0 0 3 2 5 9 1 5 0 E 3 2 7 2 0 0 3 4 0 E 5 6 0 7 5 5 2 4 0 E 6 4 2 2 0 9 1 5 0 E 6 3 6 2 0 5 3 4 0 E 4 7 8 6 0 6 2 4 0 E 4 9 1 2 5 8 1 5 0 E 1 5 5 2 0 0 4 4 0 E 8 8 6 6 5 6 2 4 0 E 3 4 1 2 0 8 1 5 0 E 0 7 4 2 0 5 4 4 0 E 8 0 5 6 0 7 2 4 0 E 4 9 0 2 5 7 1 5 0 E 2 9 3 2 0 0 5 4 0 E 3 3 3 6 5 7 2 4 0 E 6 4 0 2 0 7 1 5 0 E 7 1 3 2 0 5 5 4 0 E...

Page 30: ...8 4 3 0 E 7 8 3 8 5 0 7 3 0 E 2 6 5 3 0 3 9 3 0 E 1 8 6 1 5 8 4 3 0 E 8 1 2 8 0 1 7 3 0 E 9 9 4 3 5 3 9 3 0 E 5 5 6 1 0 9 4 3 0 E 3 5 0 8 5 1 7 3 0 E 8 3 4 3 0 4 9 3 0 E 9 2 6 1 5 9 4 3 0 E 2 9 8 7 0 2 7 3 0 E 8 7 3 3 5 4 9 3 0 E 4 0 6 1 0 0 5 3 0 E 4 3 7 7 5 2 7 3 0 E 9 1 3 3 0 5 9 3 0 E 9 7 5 1 5 0 5 3 0 E 1 8 5 7 0 3 7 3 0 E 1 6 2 3 5 5 9 3 0 E 5 5 5 1 0 1 5 3 0 E 0 3 4 7 5 3 7 3 0 E 5 0 2 3 0 ...

Page 31: ...4 9 7 9 0 9 1 4 0 E 2 7 5 8 0 5 3 4 0 E 3 2 6 2 0 6 2 3 0 E 4 9 5 9 5 8 1 4 0 E 0 3 3 8 0 0 4 4 0 E 1 6 5 2 5 6 2 3 0 E 8 9 3 9 0 8 1 4 0 E 6 9 0 8 0 5 4 4 0 E 0 0 5 2 0 7 2 3 0 E 6 0 2 9 5 7 1 4 0 E 0 7 8 7 0 0 5 4 0 E 1 4 4 2 5 7 2 3 0 E 0 2 0 9 0 7 1 4 0 E 1 5 6 7 0 5 5 4 0 E 3 8 3 2 0 8 2 3 0 E 7 3 8 8 5 6 1 4 0 E 8 3 4 7 0 0 6 4 0 E 7 2 3 2 5 8 2 3 0 E 9 5 6 8 0 6 1 4 0 E 3 3 2 7 0 5 6 4 0 E ...

Page 32: ...8 4 3 0 E 2 1 1 4 5 0 7 3 0 E 4 3 9 1 0 3 9 2 0 E 9 7 9 9 5 8 4 3 0 E 9 3 0 4 0 1 7 3 0 E 4 0 9 1 5 3 9 2 0 E 2 4 8 9 0 9 4 3 0 E 7 6 9 3 5 1 7 3 0 E 4 7 8 1 0 4 9 2 0 E 8 0 7 9 5 9 4 3 0 E 7 9 8 3 0 2 7 3 0 E 5 4 8 1 5 4 9 2 0 E 6 7 5 9 0 0 5 3 0 E 9 2 8 3 5 2 7 3 0 E 7 1 8 1 0 5 9 2 0 E 6 4 4 9 5 0 5 3 0 E 2 6 7 3 0 3 7 3 0 E 9 8 7 1 5 5 9 2 0 E 8 1 3 9 0 1 5 3 0 E 6 9 6 3 5 3 7 3 0 E 2 6 7 1 0 ...

Page 33: ...OCK TERMINAL BLOCK WHITE BLACK RED GREEN YELLOW BROWN WHITE BLACK RED BROWN PC1A RL1A ZE1 CF1 C1 C2 L1 DB1 RL1 TAB1 RG1 IC2 C7 D33 D34 D35 S P PC35A PC34B CN2 TAB RL2A 1 CN7 CN6 CN8 CN1 MANUAL SW COMPRESSOR INNER PROTECTOR OUT DOOR FAN MOTOR 4 WAY VALVE SOLENOID COMPRESSOR CAPACITOR FAN MOTOR CAPACITOR CN1 AC CORD CONNECTING CABLE 3 4 2 5 6 7 1 1 2 3 4 5 6 6 5 4 3 2 1 1 2 3 4 5 1 2 3 4 WHITE WHITE...

Page 34: ... 44 EXPLODED VIEW INDOOR UNIT TAN A53EW TAN A70EW 20 9 8 27 25 24 26 accessories 28 17 3 15 18 16 14 10 13 1 19 23 12 22 21 5 4 11 2 6 7 ...

Page 35: ... 45 TAG A53EW 1 6 8 7 17 13 16 3 18 15 10 21 11 9 20 14 19 2 5 4 12 EXPLODED VIEW OUTDOOR UNIT ...

Page 36: ... 46 EXPLODED VIEW OUTDOOR UNIT TAG A70EW 1 2 4 5 6 7 8 9 11 13 14 15 16 19 12 3 23 22 3 18 20 21 17 10 ...

Page 37: ... G N I R A E B 0 0 0 2 4 0 0 1 0 0 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 7 6 2 2 0 0 2 0 7 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 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 0 0 0 1 0 2 C 9 1 Y S S A R O T A R O P A V E 0 5 6 6 2 0 0 2 0 1 4 4 2 0 0 2 0 2 R E T L I F R I A 0 1 0 4 1 0...

Page 38: ... 6 7 0 0 A 0 0 4 7 0 0 A 1 1 R O S S E R P M O C R O T I C A P A C 0 0 8 1 4 1 E 0 0 7 1 4 1 E 2 1 K C O L B L A N I M R E T 0 0 9 7 1 1 E 0 0 9 7 1 1 E 3 1 Y S S A R O S N E D N O C 0 7 3 9 1 0 0 2 0 9 0 4 2 0 0 2 4 1 2 1 R O 8 5 E C I V R E S E V L A V 0 0 5 8 0 4 K 0 0 4 8 0 4 K 5 1 4 1 E C I V R E S E V L A V 0 0 6 8 0 4 K 0 0 3 8 0 4 K 6 1 Y S S A L E N A P E L F F A B 1 0 0 0 2 0 0 5 1 0 E A...

Page 39: ...ISSUED JUL 2004 RA 21 1 ...

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