Toyotomi TA3-A80GWI User manual

CONTENTS
SPECIFICATION....................................................................1
FUNCTIONS ..........................................................................5
SERVICE FUNCTION EXPLANATION ..................................7
OPERATION DETAILS...........................................................8
TROUBLESHOOTING GUIDE.............................................13
PERFORMANCE CURVE DIAGRAM ..................................18
ELECTRIC CIRCUIT DIAGRAM ..........................................21
SCHEMATIC DIAGRAM
EXPLODED VIEW (INDOOR UNIT) ....................................
EXPLODED VIEW (OUTDOOR UNIT) ................................
PARTS LIST (INDOOR UNIT)..............................................
PARTS LIST (OUTDOOR UNIT)..........................................
SERVICE MANUAL
ROOM AIR CONDITIONER
TA 3-A80GWI
TA 3-A90GWI

SPECIFICATION
– 1 –
INDOOR UNIT :
OUTDOOR UNIT :
TAN3-A80GWI
TAN3-A80GWI
TAN3-A80GWI
TAG3-A80GWI
TAN3-A90GWI (9K)
TAN3-A90GWI (9K)
TAN3-A90GWI (12K)
TAG3-A90GWI
INDOOR UNIT :
OUTDOOR UNIT :
TA 3-A80GWI
TA 3-A90GWI

SPECIFICATION
– 2 –
Hz
Phase/Volts
Combinations 1 Unit
9K
Total Capacity
(min - max) W
Unit 1
9K Unit 2 9K Unit 3 9K Unit 1 9K Unit 2 9K /
Capacity Each unit W 2343 2343 2343 2780 2780 /
Running current A 4.0
Power input
(min - max) W 810
Power factor % 88
Energy efficiency 3.43
Combinations 1 Unit
9K
Total Capacity
(min - max) W
Unit 1
9K Unit 2 9K Unit 3 9K Unit 1 9K Unit 2 9K /
Capacity Each unit W2667 2667 2667 3370 3370 /
Running current A 5.2
Power input
(min - max) W 1050
Power factor % 88
Rating A〜G 3.21
W
Indoor W 18 1818181818
Outdoor W
Indoor db
Outdoor db 53
Indoor db
Outdoor db 54
L/hour 1.26 1.26 1.26 1.4 1.4 1.6
Cool m3/min 7.0 7.0 7.0 7.0 7.0 7.0
Heat m3/min 8.0 8.0 8.0 8.0 8.0 8.0
Hight(mm) 265 265 265 / / /
Width(mm) 795 795 795 / / /
Depth(mm) 200 200 200 / / /
Hight(mm)
Width(mm)
Depth(mm)
Indoor kg 7.2 7.2 7.2 / / /
Outdoor kg
Liquid mm 6.35 6.35 6.35 / / /
Gas mm 9.52 9.52 9.52 / / /
5,560
(1,600〜6,000) 2,780 (1,100〜3,200)
96
3.21(A)
8,000
(2,340〜8,510) 6,740 (1,800〜7,000) 3,370 (1,200〜3,600)
9.9
Outdoor
Noise Level,heating
Dehumidifying capacity
Refrigerant pipe
diameter
Net weight
Frequency
Power supply
Compressor output
Fan output
Indoor
Noise Level,cooling
Dimension
7,030
(2,050〜7,380)
9.9
2190
(500 - 2300)
Model
3 Units
9K+9K+9K
TA 3-A80GWI
50
643
850
330
51.0
2180
(500 - 2300)
54
9.0
Single/230
95
3.48
53
54
1,100
100
Heating
Cooling
2 Units
9K+9K
7.2
1580
95
3.52
1935
28〜39 (min - max) Each
3 Units
9K+9K+9K 2 Units 9K+9K
96
3.67(A)
53
25〜36 (min - max) Each
Air flow
Specifications are subjecttochangewithoutpriornotice.

SPECIFICATION
– 3 –
Hz
Phase/Volts
Combinations 1 Unit
9K 1 Unit 12K
Total Capacity
(min - max) W
Unit 1
9K Unit 2 9K Unit 3 12K Unit 1 9K Unit 2 9K Unit 1 9K Unit 2 12K
Capacity Each unit W 2343 2343 2343 2780 2780 2860 3490 / /
//
Running current A 4.0 5.0
Power input

(min - max) W 810 1010
Power factor % 8888
Energy efficiency 3.43 3.53
Combinations 1 Unit
9K 1 Unit 12K
Total Capacity
(min - max) W
Unit 1
9K Unit 2 9K Unit 3 12K Unit 1 9K Unit 2 9K Unit 1 9K Unit 2 12K
Capacity Each unit W 2570 2570 3060 3370 3370 3160 3870 / /
//
Running current A 5.2 5.3
Power input
(min - max) W 1050 1070
Power factor % 88 88
Rating A 〜G 3.21 3.42
W
Indoor W 18 18 22 18 18 18 22 18 22
Outdoor W
Indoor db 25〜36 25〜36 28〜42 25〜36 25〜36 25〜36 28〜42 25〜36 28〜42
Outdoor db 53 53
Indoor db 28〜3928〜39 27〜42 28〜39 28〜39 28〜39 27〜42 28〜39 27〜42
Outdoor db 54 54
L/hour 1.26 1.26 1.26 1.4 1.4 1.4 1.6 1.6 2.0
Cool m3/min 7.0 7.0 8.0 7.0 7.0 7.0 8.0 7.0 8.0
Heat m3/min 8.0 8.0 9.7 8.0 8.0 8.0 9.7 8.0 9.7
Hight(mm) 265 265 265 / / / / / /
Width(mm) 795 795 795 / / / / / /
Depth(mm) 200 200 207 // // / /
Hight(mm)
Width(mm)
Depth(mm)
Indoor kg 7.2 7.2 8.3 / / / / / /
Outdoor kg
Liquid mm 6.35 6.35 6.35 / / / / / /
Gas mm 9.52 9.52 9.52 / / / / / /
1880
94
3.74
5,560
(1,600〜6,000) 6,350 (1,700〜6,500) 2,780 (1,100〜3,200) 3,570 (1,200〜3,800)
8.8
1930
95
3.29
95
3.52
7.2
1580
Outdoor
Noise Level,heating
Dehumidifying capacity
Refrigerant pipe
diameter
Net weight
Frequency
Power supply
Compressor output
Fan output
Indoor
Noise Level,cooling
Air flow
Dimension
Model
Heating
Cooling
8,200
(2,340 〜8,730) 6,740 (1,800 〜7,000) 7,030 (2,000 〜7,200) 3,370 (1,200 〜3,600) 3,660 (1,400 〜4,100)
9.8
2155
(500 - 2300)
9.0
1935
8.7
330
51.0
54 54
643
850
54
53
100
TA 3-A90GWI
2 Units
9K+12K
50
Single/230
3 Units
9K+9K+12K 2 Units 9K+9K
53 53
96
3.81(A) 1,100 3.48
95
2 Units
9K+12K
96
3.21(A)
3 Units
9K+9K+12K 2 Units 9K+9K
7,030
(2,050〜7,380)
9.9
2190
(500 - 2300)
Specifications are subjecttochangewithoutpriornotice.

SPECIFICATION
– 4 –
TAG3-A80GWI
TAG3-A90GWI
TAN3-A80GWI
TAN3-A90GWI (9K) TAN3-A90GWI (12K)
Unit
Air Circulation
INDOOR OUTDOOR
Cross-flow Fan Propeller Fan
18.1FPI 19.5FPI
18 22 100
Induction (4-pole) Induction(6-pole)
W
Heat Exchanger 18.1FPI
Expansion Valve
Plate fin configuration,forced draft
Refrigerant Control Device g (oz)
Refrigerant (R410A)
–
–
Thermostat
Air Filter
Parts Provided
Electronic Control
Type
Motor Type
Rated Output
–
1710 (60.3)
Mold-proof –
1 Mounting plate×3
Timer –
Real time dual ON/OFF
7-hour OFF
2 Remote controller×3
3 Battery (2 pcs.)×3
4 Remote controller holder×3
5 Screw cap (2 pcs.)×3
6 Drain elbow
7 Air clean filter (2 pcs.)×3
(Bamboo Charcoal/ Photo-catalytic anti-odor filters)
Specifications are subject to change without prior notice.

– 5 –
FUNCTIONS
REMOTE-CONTROL TRANSMITTER
ON/OFF
Operation mode selection
COOL
DRY
HEAT
AUTOMATIC
CIRCULATION
Air flow selection
AUTOMATIC
HIGH
MEDIUM
LOW
Negative Ion
Room temperature setting
16°C〜30°C
Timer operation selection
CONTINUOUS operation
OFF
ON
Sleep
Timer / time setting
Operation stops at the set time
(OFF timer)
Operation starts at the set time
(ON timer)
0.5〜7.0hours(Sleep timer)
Air flow direction control
Auto angle selection
Auto swing mode
Manual mode
INDOOR UNIT
INDOOR UNIT
Sensing 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 (LED)
ELECT (GREEN or RED)
Lights up green during operation.
Lights up red when negative ions are
generated.
TIMER (YELLOW)
Timer in operation
OPERATE (GREEN)
Outdoor unit operate
Dry operation mode
Automatic fan speed control
Room temperature control
Maintains the room temperature in
accordance with the setting temperature.
Deice (defrost) control
Deicing operation automatically starts
when the heating efficiency is declined by
the ice formed in the outdoor unit.
After deicing operation, heating operation
automatically starts with “Hot start
function.”

– 6 –
OUTDOOR UNIT
Compressor overload protector
When overheating of the compressor
is detected, the main controller stops
the operaiton of outdoor unit including
compressor.
When high current supplied to the
compressor is detected, the main controller
stops the operaiton of outdoor unit including
compressor.
3 min. forced operation control
Once the compressor is activated, it does
not stop for 3 minutes.
In case of termination of this operation,
push the ON/OFF button on remote
controller.
Inverter control
Inverter control reduce the ON/OFF times
of compressor, so can keep the room
temperature changeless during
operation.
Electricity consumption
Inverter control can operate with less
electricity consumption than normal air
conditioner.
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
2°C.
Airflow direction control
When ON/OFF BUTTON is pressed, the
vertical louver will move to the adequate
positions for each operation automatically.
Manual operation.
The louver starts vertical swing with a
push of the LOUVER BUTTON. Push the
LOUVER BUTTON once again to stop
the louver at the desired position while
swinging.
Auto recovery function
If there is any power failure during
operation, operation 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 to be used for a long
time, shut off the power supply after
terminating all operation with remote
controller.
FUNCTIONS

– 7 –
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
means the start of this operation.
•In this operation, the system automatically selects the operation modes, cooling
(or heating when available) according to the room temperature, as follows.
•It is not possible to operate in dry mode.
Test Operation
Test operation switch is same as emergency one.
•Use this operation only for testing the performance of the machine in the condition
where the room temperature is less than 16°C.
•Continue to press the test operation switch for more than 5 seconds.
After you hear twice beep, release your finger from the switch: the cooling
operation starts with the air flow speed “HI.”
•If the test operation switch is pressed more than 10 seconds, it doesn’t work.
•After 30 minutes, test operation ends automatically.
When two indoor units used in the same room, interference of the signals may happen. To avoid this, alternative
signal model B can be selected by the following. (Ex-factory setting is mode A)
•Remote controller side : Have “J1” on the PC board short-circuited by soldering.
•Indoor unit side : Cut “R13” on the PC board.
(Each Operations Details)
EMERGENCY ANDTEST OPERATION
SERVICE FUNCTION EXPLANATION
Beep
Twice beep
<Remote control unit> <Indoor unit>
Receive
Ex-factory setting (Mode A) Ex-factory setting (Mode A)
Cut R13 on the PC board (Mode B)
Have "J1"on the PC
board short-circuited 
by soldering (Mode B)
Receive
Not receive
Not receive
J1
Soldering
J1
Temperature
ABOVE 23°C
BELOW 23°C
COOLING
HEATING
26°C
23°C
CONTINUOUS
CONTINUOUS
AUTOMATIC
AUTOMATIC
Operation
mode Designated temperature Timer mode Air flow
HOWTO RELEASE EMERGENCY ANDTEST OPERATION
INTERFERENCE PREVENTION OF SIGNALS FROMTHE REMOTE CONTROLLERS
•In case of releasing during those operations, you can either push emergency operation switch once more or
apply operation using remote control.
You will hear a beep sound and emergency/ test operation is released.
•If you release the operation by remote control, operation will continue as setting of the remote control
automatically.

– 8 –
OPERATION DETAILS
TIMER OPERATION
ONTimer 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 “ , ” button.
Press the “TIME ADJ” button twice.The setting of “ON Time” is completed and the present time appears on the
LCD.
•
Set the “ON Timer” : Press the Timer fixing button “ON”.
OFFTimer operation
•
Press the ON/OFF switch. Right after replacing new batteries, set the present time in advance.
•
Set the “OFF Time” : Press the “TIME ADJ” button 3 times.
Adjust the time with the “ , ” button.
Press the “TIME ADJ” button once.The setting of “OFF Time” is completed and the present time appears on the
LCD.
•
Set the “OFF Timer” : Press the Timer fixing button “OFF”.
SleepTimer operation
•
Press the “SLEEP” button during the operation.
•
Set the operating period by pressing the “SLEEP” button until the period designated appears on the LCD.
Timer Cancellation
•
ON/OFF Timer :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 adjustment
When ON/OFF switch is pressed, the vertical louver will move to the adequate positions for each operation
automatically.
Swing of air flow
If air flow direction switch is pressed once, the vertical louver will move within the range of figures.
Fixing the flow direction
If air flow direction switch is pressed again, the vertical louver will be fixed and that position is memorized.
From the next operation the louver will be set at previous position automatically.
Notes :
•
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.
Level
Approx.10 degrees
Approx.65 degrees
Standard Position
Approx.10
Approx.50 Approx.65
(Cooling/Dry)
(Heating)
degrees
degrees degrees
Level
Swing of Air Flow
Cooling
Dry
Heating

– 9 –
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 2 minutes of its operation even if the room temperature reaches to
the designated temperature, except changing setting temperature.
9K+9K
9K+12K
two indoor unit operation
one indoor unit operation
70.0Hz
78.0Hz  
22.0Hz
32.0Hz
9K+9K+9K
9K+9K+12K
three indoor unit operation 82.0Hz
82.0Hz 28.0Hz
38.0Hz

9K
12K 42.0Hz 50.0Hz 16.0Hz
28.0Hz

-1˚C
MAX MAX
1
MIN MIN
-0.3˚C
0Hz
Indoor fan COOLING MODE
Indoor fan DRY MODE
Frequency of
Designated
compressor
temperature
Room temperature
1
2
21
2
2min. 3min.
Selected speed
Selected speed Selected speedStop
Super low
COOLING MODE AND DRY MODE OPERATION
•
The compressor will stop when the room temperature becomes 1°C lower than the designated temperature and
that condition has been kept for 2 minutes.
•
When two indoor units are operating simultaneously, even if only another room temperature reachs the designated
temperature, the compressor does not stop.
The expansion valve of another cycle is closed completely to stop refrigerant flow.
•
The compressor will re-start when room temperature rises to 0.3°C lower than the designated temperature.

– 10 –
OPERATION DETAILS
+4.0
39˚C
15˚C
MAX MAX
MIN MIN
+4.7
0rpm
0Hz
Frequency of 
compressor
Selected speed Selected speed
Super low
20 sec.
Low
Designated
temperature Room temperature
Temperature, 
indoor heat 
exchanger
Indoor fan
1 1
22
2min.
9K+9K
9K+12K
two indoor units operation
one indoor unit operation
86.0Hz
90.0Hz  
26.0Hz
30.0Hz
9K+9K+9K
9K+9K+12K
three indoor units operation 90.0Hz
90.0Hz 30.0Hz
36.0Hz

9K
12K 54.0Hz 60.0Hz 20.0Hz
26.0Hz

21
HEATING MODE OPERATION
•
The compressor will stop when the room temperature becomes 4.7°C higher than the designated temperature
and that condition has been kept for 2 minutes.
•
When two indoor units are operating simultaneously, even if only another room temperature reachs the designated
temperature, the compressor does not stop.
•
The compressor will re-start when room temperature becomes 4.0°C higher than the designated temperature.
NOTICE
Warm air comes out from one of the indoor units during circulation or negative ion mode when the other indoor
units are in heating operation.

– 11 –
OPERATION DETAILS
Compressor
Outdoor fan
4way valve
ON OFF 54.0Hz 68.0Hz 80.0Hz OFF
ON
ON
ON
ON
2min. 2min.
50sec.
50sec.
53sec.
Max 12min.
53sec.

sec.
10
2min.
-2˚C
8˚C
Defrosting starts Defrosting stop
Temperature of
outdoor heat exchanger
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.
a) 50 minutes’of continuous run of the compressor after the start of heating operation or after the completion
of previous defrosting operation.
b) the temperature of the outdoor heat exchanger stays lower than -2°C continuously for 2 minutes.
•
Defrosting operating is called off if either of the following conditions is met.
a) The temperature of outdoor heat exchanger rises to 8°C while 4-way-valve is ON.
b) 12 minutes has passed since compressor turned OFF.

– 12 –
REFRIGERATION CYCLE DIAGRAM
INDOOR UNIT
ROOM A1
ROOM A2
REFRIGERANT PIPING
REFRIGERANT
PIPING
2-WAY VALVE
COOLING MODE
HEATING MODE
EXPANSION
VALVE
EXPANSION
VALVE
EXPANSION
VALVE
STRAINAR
REFRIGERANT FLOW
OUTDOOR UNIT
HEAT EXCHANGER
HEAT EXCHANGER
4-WAY VALVE
ACCUMULATOR
ACCUMULATOR
COMPRESSOR
REFRIGERANT
PIPING
REFRIGERANT
PIPING
REFRIGERANT
PIPING
REFRIGERANT
PIPING
HEAT EXCHANGER
3-WAY VALVE
3-WAY VALVE
ROOM B
HEAT EXCHANGER
3-WAY VALVE
STRAINAR
STRAINAR
OPERATION DETAILS

– 13 –
TROUBLESHOOTING GUIDE
FORYOUR 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.
●Neverremodelappliance.
Use designated parts or accessories to avoid accidents.
●In case of gas leakage, not only refill the required amount of the refrigerant gas but
also find out the gas leakage point and mend it. If the service work has to be
suspended before mending the leakage points, be sure to collect the refrigerant
gas in the outdoor unit by using pump then fasten the service ports to avoid any
further leakage. Poisonous gas may be generated when the leaked refrigerant is
exposed to fire.
●Clean the pins of the plug and insert the plug completely into the outlet.
●Be sure to change the cable if it is damaged.
Do not use damaged cable.
●Do not use power supply cord extended or connected in halfway.
●Be sure to check the insulated resistance, more than 1M Ω.
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 take off the plug when servicing.
It may cause the risk of electric shock.
●If leakage of refrigerant occur in the installation, ventilate a room.
If the leaked refrigerant is exposed fire, poisonous gas may be generated.
Danger
●Boosting capacitor make the control box assembly (TAG unit) high voltage.
Make the capacitor discharge enough when servicing. Otherwise will be struck
by electricity.
Improper use will cause the significant risk of death or serious injury of the user.
Danger
Warning Improper use may cause the risk of death or serious injury of the user.
Caution ProhibitedHigh Voltage
Strict enforcement Connect the earthing cable
Off the Plug
●Please refer the marks below.
High Temperatare
Discharge electricity of the capacitor by making short circuit firstly.Then check the capacitor by tester.
Be sure to set up the tester for the measurement of bigger resistance.
●Be sure to put the units to earthing works.

– 14 –
TROUBLESHOOTING GUIDE
INDICATION LAMP
ALARM 
INDICATION TIME APPEARANCE, PORTION, PARTS 
SEEMED WRONG
MOMENTARY STOP OF POWER 
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
check the the power voltage(230v) and the wiring connection
emergency operation (display of remote controller is faint or not)
check the electric continuity by tester
check the electric continuity by tester 
emergency operation
other than described above

15 sec. later after main power on, if alarm indication appears, TAN
PCB (main) should be replaced
check the other indoor unit operation mode.
when operating each indoor units, make sure that they are in the
same operation mode. (Cooling/ Dry or Heating)
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
POWER
(green) TIMER (yellow)
OPERATION 
(green)
INDICATION LAMP
OFF OFF OFF
TAN, TAG not work at all
FLASHING OFF OFF
FLASHING ON ON
ON
ON ON
FLASHING
FLASHING
ON OFF
OFF
alarm indication appears 
immediately when press 
the operation switch
OFF OFF FLASHING
OFF FLASHING
FLASHING
OFF FLASHING
TAN, TAG don’t work 
at all, and after 40 sec.,
operation lamp is flashing
(2 min. in case of power on)

normal lamp indication 
turn alarm when something is 
wrong with
TAN, TAG
error of transmission
CT disconnection
OFF FLASHING OFF
FLASHING FLASHING OFF
OFF
OFF
30 〜40 min. later after 
compressor start, the yellow 
lamp is flashing and TAN, 
TAG stop running
sensor discharge operate 
because temperature of 
discharge tube beyond 
100°C, or sensor 
discharge is bad quality
protective action against 
excess current AC current
detection
FLASHING FLASHING ON
FLASHING
FLASHING
FLASHING
ON
FLASHING
FLASHING
once or two times stop 
running with power lamp 
lighting when something 
is wrong with TAN, TAG, 
later after that in case of 
reoccurrence, alarm 
indication appears. 

protective action against 
excess current DC current 
detection
rise of temperature
(above 100°C) of power
module

in case of heating 
operation, a rise of 
temperature (above 62°C) 
of TAN heat exchanger 
or less quantity of TAN
blow
FLASHING FLASHING
FLASHING ON FLASHING
in case of heating operation, 
after a few minutes operation, 
all lamps are flashing and
TAN, TAG stop running
accident of controller
fifth beep and TAN, TAG 
don't work at all.
short or open of sensor, 
temperature or incomplete 
insertion of connector
TAN PCB (MAIN)

TAG PCB (MAIN)
SENSOR, TEMP. ROOM
SENSOR, TEMP. HEAT EXCHANGER
SENSOR, TEMP. DEFROST
SENSOR, TEMP. DISCHARGE
SENSOR, TEMP. OUTDOOR

FILTER IS CHOKED
SENSOR, TEMP. HEAT EXCHANGER
TAN PCB (MAIN)
FAN MOTOR (TAN)
UNREASONABLE OPERATION 
UNDER OVERLOAD
MOMENTARY STOP OF POWER 
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
TAG PCB (MAIN)


COMPRESSOR LOCKING
POWER SUPPLY
REMOTE CONTROL
TAN FUSE(3.15A) 
TAN TERMINAL BLOCK
PCB (RECEIVER & DISPLAY)
TAN PCB ( MAIN)
MIS-WIRING 
(TAG-TAN CONNECTING CABLE) 
OR RARE CONTACT
CUTTING OFF CT
CURRENT FUSE . (15A) FUSING 
(ON THE TAG PCB(FILTER))
UNREASONABLE OPERATION
UNDER OVERLOAD
GAS LEAKAGE


VALVE, SERVICE IS CLOSED
PIPE
SENSOR, TEMP. DISCHARGE

check the place of installation (blockage of air inlet & outlet of TAN, TAG)
check the excessive gas
check the movement by reoperation

check the power voltage (230V)
check the place of installation (blockage of air inlet & outlet of 
TAN, TAG)
check by eyes and clean it
check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig. 2]
if it is not AC 110V〜230V, TAN PCB (main) should be replaced
other than described above
check the movement by reoperation
check the power voltage (230V)
If the same alarm lamp will remain lit during operation even after 
disconnecting the connector of the lead cable to the compressor,
it implies the defect of the TAG controller assy.
If the same alarm lamp wil remain lit duning operation even after replacing 
the TAG controller assy, it implies the defect of the compressor.
change the TAG controller assy
check the place of installation (blockage of air inlet & outlet of TAN, TAG)
check the excessive gas
check the wiring connection and rare contact
check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
check the resistance by tester [see table 2]
check the resistance by tester [see table 3]
check the resistance by tester [see table 2]

check the resistance by tester [see table 4]
check the resistance by tester [see table 4]
check the point of leakage (discharge temperature rise in case of 
small leakage), measure the pressure of compressor during fixed 
operation (emergency and test operation)
check the valve by eyes
check by eyes
check the resistance by tester [see table 3]

check the voltage.[see fig. 1]
(if it is no continuity, TAG controller assy should be replaced.)
ON
FLASHING
ON
ON
later after start running through remote controller, if alarm 
indication appears, TAG controller assy should be replaced
--
SENSOR, TEMP. LIQUID PIPE
DIFFERENT OPERATION
SENSOR, TEMP. GAS PIPE
SHORT CYCLE
(INSUFFICIENT AIR CIRCULATION)
UNREASONABLE OPERATION
UNDER OVERLOAD
--- -
-

abnormal revolution of 
compressor

UNREASONABLE OPERATION 
UNDER OVERLOAD
MOMENTARY STOP OF POWER 
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
TAG PCB (MAIN)


COMPRESSOR LOCKING
check the place of installation (blockage of air inlet & outlet of TAN, TAG)
check the excessive gas
check the movement by reoperation

check the power voltage (230V)
If the same alarm lamp wil remain lit duning operation even after replacing 
the TAG controller assy, it implies the defect of the compressor.

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.

– 15 –
TROUBLESHOOTING GUIDE
W
R
B
GR
10
AC230V
INDICATION LAMP
check the drain hose by eyes (it might be folded or choked)
check the TAN whether lean or not
not cool down
not warm up
water leakage
louver doesn' t work check the resistance by tester [see fig.4]
check the point of leakage and measure the pressure of
compressor during fixed operation (emergency and test operation)
nasty smell
FILTER IS CHOKED
NO USE FOR A LONG TIME
NASTY SMELL 
(CIGARETTE, FURNITURE, ETC.)
DRAINAGE
MIS-INSTALLATION
LOUVER MOTOR
GAS LEAKAGE
SENSOR, TEMP. ROOM
SENSOR, TEMP. HEAT EXCHANGER
FAN MOTOR(TAN)
4-WAY VALVE
SHORT CYCLE 
(INSUFFICIENT AIR CIRCULATION)
check by eyes and clean it

use deodorizer
check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig. 3]
if it is AC 110V〜230V, TAN fan motor should be replaced
check the resistance by tester [see fig.3]
check the blockage of air inlet & outlet of TAN, TAG
--- -
--- -
--- -
--- -
※ In this table TAN means indoor unit and TAG means outdoor unit.
CHECK A FOLLOWING STEPS
〔fig.3〕Resistance of 4-way valve coil
〔fig.1〕Continuity of current fuse on theTAG PCB (filter) 〔fig.2〕Voltage ofTAN fan motor on the TAN PCB (main)
Take off the connector and check the Resistance of 4-way valve coil.
Normal:230V
〔fig.4〕Resistance of TAN louver motor
Normal:1.5kΩ
Take off the connector and check the resistance between
the common terminal and each terminal.
《Check theTAN PCB(main)》
Measure the voltage between the connector pins in the back of
TAN PCB(main).
yellow
blue
red
tester
voltage
TAN fan motor 
connector

4-way valve coil
1.5kΩ
common terminal

(5)
(1)
tester
resistance
terminal block
《Check theTAG PCB(main)》
Measure the voltage between the white and black terminals,
and between the black and the gray terminals.
B : BLACK
GR : GRAY
R : RED
W :WHITE Normal:110V〜230V
Normal:360kΩ〜 390kΩ
attention
electric shock attention
electric shock

– 16 –
TROUBLESHOOTING GUIDE
DISPLAY OF ERRORS INTHE PAST
Hold switch for more
than 10 seconds
Another push
Three beeps The latest error indication
Another push
Another push
Another push
Four beeps
Three beeps
Two beeps
One beep
The second latest error indication
The fourth error indication
The third latest error indication
Indication lamp goes off
ELECTRIC CHARACTER
〔table 1〕Sensor, temp.room 〔table 2〕Sensor, temp.defrost
Sensor, temp. outdoor
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.
You will see the latest error by indication lamp.
Further pushing of the switch will make the error indication by reversing cycle up to four latest errors in the past.
At any stage, the error indication will disappear after 30 seconds.
48
37
29
23
18
15
Resistance (kΩ)
10
15
20
25
30
35
Temp. (℃) Resistance (kΩ)
0
5
10
15
20
25
30
35
Temp. (℃)
31
24
19
15
12
10
8
7
1,130
660
320
250
160
50
Resistance (kΩ)
10
20
35
40
50
80
Temp. (℃)
〔table 4〕Sensor, temp. liquid pipe
Sensor, temp.gas pipe
21
8
3.5
2
1
Resistance (kΩ)
10
30
50
70
90
Temp.(℃)

– 17 –
TROUBLESHOOTING GUIDE
WIRING DIAGRAM
CMTI :INDOOR UNIT
CMTE: OUTDOOR UNIT
TAG3-A80GWI
TAG3-A90GWI
B
BL
BR
G
OR
:BLACK
:BLUE
:BROWN
:GREEN
:ORANGE
TAN3-A80GWI
TAN3-A90GWI(9K)
TAN3-A90GWI(12K)
P
R
W
Y
GR
:PINK
:RED
:WHITE
:YELLOW
:GRAY
2
SR
T
−＋
COMPRESSOR
OR
Y
Y
REACTOR
4WAY V.
MOTOR
(FAN)
SENSOR
(TEMP.,
DISCHARGE)
B
W
W
R
B
W
R
VOLTAGE
MAIN P.C.B
FILTER P.C.B
R
S
T
4
3
1
18 17
10
12
B
W
B
GR
RW
G/Y
OR
CAPACITOR
4.0μＦ
500ＶＡＣ
6
※ ※
12
11
27
28
29
A１
A2
B
24
20
21
22
23
SENSOR (TEMP.,
LIQUID PIPE)
A１
A2
B
SENSOR
(TEMP.,
OUTDOOR)
EXP. V.
31
32
BL
P
Ｒ
Ａ２−１
Ａ２−２
Ａ２−３
Ａ１−１
Ａ１−２
Ａ１−３
Ｌ
ＮPOWER
SOURCE
A１ ROOM
A２ ROOM
Ｂ−１
Ｂ−２
Ｂ−３ BROOM
TERMINAL
BLOCK
W
W
B
B
WB
SENSOR
(TEMP.,
DEFROST)
SENSOR (TEMP.,
GAS PIPE)
A１
A2
B
B
B
B
B
B
YWB
R
B
BR
1
2
G/Y
EARTH
TERMINAL
FUSE(250V
T3.15A)
S
TERMINAL
BLOCK
↓ OUTDOOR UNIT
W
3
BL
BL
R
R
TRANSFORMER
BL RYB
W
MOTOR(FAN)
PCB
(RECEIVER
&DISPLAY)
MANUAL SWITCH
BL
BL
SENSOR
(TEMP.,ROOM)
B
BSENSOR
(TEMP.,HEAT
EXCHANGER)
MOTOR
(LOUVER)
P
IONIZER
PCB
(main)

– 18 –
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.
(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 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.
Piping size
Max. tube length
Liquid side
Gas side
Max.height difference
6.35mm
9.52mm
25m
10m
45m
Per unit
Total

– 19 –
PERFORMANCE CURVE DIAGRAM
HEATING
COOLING
20 25 30 35
0
5
10
15
20
25
30
2.0
2.5
3.0
3.5
4.0
4.5
5.0
CURRENT
TEMPERATURE 
BLOW OUT

AIR TEMPERATURE INDOOR-OUTDOOR
HUMIDITY60%
(°C)
0.5
1.0
1.5
SERVICE PORT
PRESSURE
(MPa)

(A)
(°C)
5101520
2.0
2.5
3.0
35

40
45
50
5.0
5.5
6.0
AIR TEMPERATURE-OUTDOOR
HUMIDITY50%
(°C)
AIR-TEMPERATURE

INDOOR 20°C
(°C)
4.5
(MPa)
CURRENT
TEMPERATURE 
BLOW OUT
SERVICE PORT
PRESSURE
(A)
In case one indoor unit is operating, TAN3-A80GWI or TAN3-A90GWI(9K)
In case one indoor unit is operating, TAN3-A80GWI or TAN3-A90GWI(9K)