Toyotomi TAN-A70IV User manual

TAN/TAG-A70IV(A)
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) .............................................................. 40
SEMICONDUCTOR LEAD IDENTIFICATION...................... 54
SEMICONDUCTOR PIN FUNCTION................................... 58
THERMISTOR RESISTANCE CHART ................................. 63
EXPLODED VIEW (INDOOR UNIT) .................................... 71
EXPLODED VIEW (OUTDOOR UNIT) ................................ 74
PARTS LIST (INDOOR UNIT) .............................................. 76
PARTS LIST (OUTDOOR UNIT) .......................................... 77
SERVICE MANUAL
ROOM AIR CONDITIONER

SPECIFICATION
– 1 –
Unit
BTU/hCooling Capacity
INDOOR OUTDOOR
–
BTU/hHeating Capacity –
L/h
phase
Moisture Removal –
Power source
Single
V230
Hz 50
OUTLET
Airflow Method
SIDE VIEW TOP VIEW
INTAKE
m/min
Air circulation (at High) Cooling ;
Heating ;
W
Electrical Data
Input
Running Current
Starting Current
Inner diameter
Length
Cooling ;
Heating ; –
–
ACooling ;
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 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''
TAN-A70IV(A) TAG-A70IV(A)
22,000(5,100-22,800)
24,500(7,100-25,700)
3.3
9.9
12.0
12.0
2,140
1,985
9.9
9.2
14
0.6
2.3
295
799
237
9.1
643
850
330
49

SPECIFICATION
– 2 –
Unit
Air Circulation
INDOOR OUTDOOR
Cross-flow Fan Propeller Fan
30 100
Induction (4-pole) Induction (6-pole)
W
Heat Exchanger 21.1FPI 18.1FPI
Capillary Tube
Plate fin configuration,forced draft
Refrigerant Control Device
g (oz)
Refrigerant (R410A )
–
1,400(49.5)
–
Thermostat
Air Filter
Parts Provided
Electronic Control
Type
Motor Type
Rated Output
–
Photo-catalytic Catechin –
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
7 Air Clean Filter
Timer –
Real time dual ON/OFF
7-hour OFF
TAN-A70IV(A) TAG-A70IV(A)

– 3 –
FUNCTIONS
REMOTE-CONTROL TRANSMITTER
ON/OFF
Operation mode selection
COOL
DRY
HEAT
AUTOMATIC
CIRCULATION
Air flow selection
AUTOMATIC
HIGH
MEDIUM
LOW
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
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)
POWER (GREEN)
Lights up green during operation.
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.”

– 4 –
FUNCTIONS
OUTDOOR UNIT
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.
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.
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.
Airflow direction control
When ON/OFF BUTTON is pressed, the
ver tical 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.

– 5 –
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
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.
Temperature
ABOVE 23°C
BELOW 23°C
COOLING
HEATING
26°C
23°C
CONTINUOUS
CONTINUOUS
AUTOMATIC
AUTOMATIC
Operation Designated
mode temperature Timer mode Air flow
HOW TO RELEASE EMERGENCY AND TEST OPERATION
•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.
INTERFERENCE PREVENTION OF SIGNALS FROM THE REMOTE CONTROLLER
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.
Twice beep
Beep
J1
Soldering
J1

– 6 –
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 “ , ” 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”.
OFF Timer 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”.
Sleep Timer 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
Ver tical 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
(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

– 7 –
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 360 seconds of its operation even if the room temperature reaches
to the designated temperature, except changing setting temperature.
-1.3˚C
MAX
92Hz
MAX
92Hz
MIN 20Hz
0.7˚C
0
Hz
Frequency of
Designated
compressor
temperature
Room temperature
MIN 20Hz
COOLING MODE OPERATION
•The compressor will stop when operational frequency reached the minimum frequency and that condition has
been kept for 360 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.
•The operational frequency will be set every 120 seconds of operation.
The operational frequency setting will be calculated based on the deviation of the room temperature and the
set temperature on one end and the deviation factor at the time of previous setting on another.

– 8 –
OPERATION DETAILS
DRY MODE OPERATION
•The compressor will stop when operational frequency reached the minimum frequency and that condition has
been kept for 360 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.
•The operational frequency will be set every 120 seconds of operation.
The operational frequency setting will be calculated based on the deviation of the room temperature and the
set temperature on one end and the deviation factor at the time of previous setting on another.
Indoor fan Selected speedStop Super low
Super
low
3min.
0
Hz
Frequency of
compressor
Designated
temperature
Room temperature
Selected speed
-1.3˚C
0.7˚C
MAX
92Hz
MAX
92Hz
MIN 20Hz MIN 20Hz

– 9 –
OPERATION DETAILS
39˚C
15˚C
0rpm
Selected speed Selected speed
Super low
20 sec.
Low
Temperature,
indoor heat
exchanger
Indoor fan
+3.0
+5.0
0
Hz
Frequency of
compressor
Designated
temperature
Room temperature
MAX
88Hz
MAX
88Hz
MIN 30Hz MIN 30Hz
HEATING MODE OPERATION
•The compressor will stop when operational frequency reached the minimum frequency and that condition has
been kept for360 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.
•The operational frequency will be set every 120 seconds of operation.
The operational frequency setting will be calculated based on the deviation of the room temperature and the
set temperature on one end and the deviation factor at the time of previous setting on another.