akira AC-S13HU User manual

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Model No: AC-S13CK_S13HK
Version 1.0
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Model :
AC-S13CK
AC-S13HK

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Model No: AC -S13CK_S13HK
Version 1.0
Content
Feature …………………………………..………………………………………………..4
Specifications …………………………………………………………………………….5
Operating range ………………………………………………………………………….5
Remote control …………………………………………………………………………...7
Refrigeration cycle ……………………………………………………………………….10
Operation details …………………………………………………………………………12
Installation ……………………………………………………………………………….. 22
2-way, 3-way valve ………………………………………………………………………33
Trouble shooting …………………………………………………………………………41
Exploded drawing ………………………………………………………………………. 49
Part list ……………………………………………………………………………………52

4
Model No: AC -S13CK_S13HK
Version 1.0
CHAPTER 1: FEATURES
MODE DESCRIPTION
COOLING Cools, dehumidifies and filters the room air. Maintains desired room temperature.
HEATING Heats and filters the room air. Maintains desired room temperature.
SMART Operates the appliance at COOLING, HEATING or DRY mode, maintaining desired
temperature dependent upon the room temperature.
DRY Dehumidifies and softly cools the room air. This mode is advisable to be used when the
room temperature is rather cool but the humidity is rather high.
FAN ONLY Re-circulates and filters the room air. Maintains constant air movement in the room.
SLEEP The SLEEP mode will be canceled after being set for 8 hours. The set temperature will
be increased 0.5oper hour during the first two hours in COOLING or DRY and
decreased 1oper hour in the first three hours in HEATING.
AUTO FAN
The appliance automatically selects the indoor fan speed in accordance to the room
temperature. At the start, the appliance operates at high fan speed. As the room
temperature gets closer to the set temperature, the fan switches to a lower speed for
quieter operation.
FAN SPEED
HIGH
MEDIUM
LOW
1. The appliance can set at different indoor fan motor speed by pressing the FAN
SPEED button on the remote controller.
2. When this symbol is being displayed on the LCD of the remote controller, the signal is
transmitting from the remote controller to the air conditioner.
TEMP. SET
UP
DOWN
Press DOWN button once, the set temperature is decreased by 1o.
Press UP button once, the set temperature is increased by 1o.
TIMER
Automatically switches the appliance ON at preset time intervals, ensuring a comfortable
environment before you return home, or switches OFF the appliance automatically
when
you sleep without wasting electricity.
Auto -restart When the power supply restores after its failure, the machine will start to work
automatically with the previous setting parameters.
SUPER Strong cooling when you just come into your room and wan
t to cool the room as soon as
possible.

5
Model No: AC -S13CK_S13HK
Version 1.0
CHAPTER 2: SPECIFICATIONS
(SEE APPENDIX A)
CHAPTER 3: OPERATING RANGE
1. TEMPERATURE RANGE FOR T1 CLIMATE AIR CONDITIONER
lThe preset temperature of the appliance ranges from 18oC to 32oC.
lThe ambient temperature of the cooling only air conditioner ranges from 18oC to
43oC.
lThe ambient temperature of the heat pump ranges from –7oC to 43oC.
lThe rated cooling operation test condition is as following.
Indoor DB/WB temperature: 27oC /19oC
outdoor DB/WB temperature: 35oC /24oC
lThe rated heating operation test condition is as following.
lindoor DB/WB temperature: 20oC/Max.15oC
loutdoor DB/WB temperature: 7
oC/6oC
2. TEMPERATURE RANGE FOR T3 CLIMATE AIR CONDITIONER
lThe preset temperature of the appliance ranges from 18oCto 32oC.
lThe ambient temperature of the cooling only air conditioner ranges from 21oCto
52oC.
lThe rated cooling operation test condition is as following.
Indoor DB/WB temperature: 27oC/19oC
outdoor DB/WB temperature: 35oC/24oC

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Model No: AC -S13CK_S13HK
Version 1.0
Indoor unit
Pipe length is
15 meters Max
Outdoor unit
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5
m
Indoor unit
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5
m
Curled tube for
returning water
Outdoor unit
3. REFRIGERANT PIPING
lThe maximum length of the connecting refrigerant piping between indoor unit
and outdoor unit is 15m and the maximum elevation difference between indoor
and outdoor units are 5m.
lIf the refrigerant piping is longer than 7m,additional refrigerant charge 20g/m for
below 1/2 inch gas pipe and 30g/m for below 5/8 or 3/4 inch gas pipe is advis-
able.
lOutside diameter of the refrigerant piping is as following.
Models OD of liquid pipe
(small pipe)
OD of gas pipe
(large pipe)
7K, 9K (COOLING ONLY & HEAT PUMP 6mm or 1/4 inch 10mm or 3/8 inch
12K, 18K,24K ( COOLING ONLY &
HEAT PUMP)
6mm or 1/4 inch 12mm or 1/2 inch

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Model No: AC -S13CK_S13HK
Version 1.0
CHAPTER 4: REMOTE CONTROLLER
The remote controller transmits signals to the system.
1. ON/OFF BUTTON
lThe appliance will be started when it is energized or will be stopped when it is in
operation, if you press this button.
2. MODE BUTTON
lUsed to select the type of operation mode.
COOLING mode
9
5
3
8
4
2
7
6
1

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Model No: AC -S13CK_S13HK
Version 1.0
DRY mode
FAN ONLY mode
HEATING mode
3. FAN SPEED BUTTON
lUsed to select the indoor fan motor speed.
Automatic fan speed
High fan speed
Medium fan speed
Low fan speed
4.TEMPERATURE SETTING BUTTON
lUsed to adjust the preset room temperature.
lUsed to adjust time in TIMER mode.
5. SWING BUTTON
lPress to adjust airflow direction.
6. SMART BUTTON
lUsed to enter fuzzy logic operation directly, regardless of the unit is on or off.
7. TIMER SET/CANCEL BUTTON
lUsed to set or cancel the timer operation.
8. SLEEP BUTTON
lUsed to set or cancel SLEEP mode operation during COOLING, HEATING, DRY
or SMART mode operation.
9. SUPER BUTTON
lUsed to start or stop the fast cooling.
(Fast cooling operates at high fan speed with 18 oC setting temperature
automatically)
The indication symbols on LCD:

9
Model No: AC -S13CK_S13HK
Version 1.0
Indication symbols on LCD:
Signal transmit.
Smart indicator Dry indicator
Fan only indicator
Sleep indicator Heating indicator
Cooling indicator
Super indicator High fan speed
Medium fan speed
Low fan speed
Auto fan speed

10
Model No: AC -S13CK_S13HK
Version 1.0
CHAPTER 5: REFRIGERATION CYCLE
1. Cooling only appliance
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Indoor unit
evaporator
liquid side
gas side
3-way valve
2-way valve
Outdoor unit
accumulator
compressor
condenser
capillary

11
Model No:AC -S13CK_S13HK
Version 1.0
2. Heat pump
¼¼Êõ²ÎÊý:
Indoor unit
evaporator
liquid side
gas side
3-way valve 2-way valve
check valve
Outdoor unit
accumulator
compressor
condenser
reverse valve capillary
heating cooling
defrost
Flow of refrigerant

12
Model No:AC -S13CK_S13HK
Version 1.0
CHAPTER 6: OPERATION DETAILS
1. SAFETY CONTROL
l3 minutes delay for compressor
The compressor is ceased for 3 minutes to balance the pressure in the refrigeration
cycle in order to protect the compressor.
l59 seconds delay for reversing valve
The 4-way reversing valve delay for 59 seconds to prevent the refrigerant abnormal
noise when the HEATING operation is OFF or switched to other operation modes.
lOver-current control
The compressor will be switched OFF when it is over-current for 5seconds, and
when the current is normal and the compressor has been stopped for 3 minutes , the
compressor will be turned ON.
lFreeze preventive control
When the indoor pipe temperature falls below –1oC during COOLING or DRY
operation for 3 minutes, the compressor and outdoor fan motor turn OFF with buzzer
3 beeps . When the indoor pipe temperature recovers to 5oC and the compressor has
been stopped for 3 minutes, the compressor and outdoor fan motor will be turned
ON.
lOverheating protection system
When overloading occurs during the heating operation, this system controls the
outdoor fan motor and compressor according to the indoor pipe temperature to
prevent the overloading of the compressor and restrain the rise in high pressure.
When the indoor pipe temperature exceeds 53oC, the outdoor fan motor will be
turned OFF, and when the indoor pipe temperature falls below 49oC, the outdoor fan
motor recovers to ON. When the indoor pipe temperature exceeds 63oC, the
appliance will be turned OFF with 4 beeps of buzzer and cannot recover
automatically.

13
Model No:AC -S13CK_S13HK
Version 1.0
2. AIR FLOW DIRECTION CONTROL
lThis function is to swing the louver up and down automatically and to set it at a
desired position.
lThe procedure is as following.
FPress the ON/OFF button to operate the appliance. The louver will swing
automatically to the default position.
FPress the SWING button to swing the louver up and down automatically.
FRepress the SWING button to stop the louver at a desired position.
lThe louver is controlled by a step motor. The different default position of different
modes is as following:
FThe louver can swing from 0°to 110°.
FThe louver closes at 0°.
FThe louver swings from 25°to 65°with an automatic setting point of 45°during
COOLING operation.
FThe louver swings from 10°to 30°with an automatic setting point of 30°during
DRY operation.
FThe louver swings from 45°to 98°with an automatic setting point of 85°during
HEATING operation.
FThe louver swings from 45°to 98°with an automatic setting point of 85°during
FAN only operation.
3. COOLING MODE OPERATION
lWhen the COOLING mode operation is selected without setting temperature, the
appliance will set the preset temperature at 26 o C automatically with the AUTO
FAN speed.
lWhen selecting the COOLING mode operation, the appliance will operate ac-
cording to the setting by the remote controller and the operation diagram is as
following:

14
Model No:AC -S13CK_S13HK
Version 1.0
4. DRY MODE OPERATION
lThe appliance starts as COOLING operation. If 3minutes elapses after starting,
the appliance will sense the intake air temperature and minus 1.5oCas the
setting temperature.
lDuring DRY operation, the compressor ON when temperature is the setting
temperature plus 1
oC. The compressor OFF when temperature is the setting
temperature minus 1oC. The setting temperature can only be adjusted by 2oC
up and down.
lWhen the appliance operates at DRY mode, the indoor motor speed is LOW.
5. HEATING MODE OPERATION (ONLY AVAILABLE FOR HEAT PUMP)
lThe appliance will operate at the setting by the remote controller and the opera-
ROOM TEMP.
SET TEMP.+1¡æ
(COMP.ON)
SET TEMP.-1¡æ
(COMP. OFF)
Indoor fan motor
speed
Compressor
Outdoor fan motor
set
speed
low
speed
set
speed
low
speed
set
speed
ON OFF ON OFF ON
ON OFF ON OFF ON
More than
3 mins
More than
3 mins
set set

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Model No:AC -S13CK_S13HK
Version 1.0
SET TEMP.+4.5¡æ
(COMP. OFF)
SET TEMP.+2.5¡æ
(COMP. ON)
ROOM TEMP.
More than
3 mins
30 secs 30 secs
Indoor fan motor speed
**
set
speed
UL OFF
set
speed
OFF
UL
Compressor ON OFF ON OFF
Outdoor fan motor ON OFF ON OFF
* The indoor fan motor is controlled by Cold Air Preventive System.
A
BAB
*
*
1
o
tion diagram is shown as following.
lThe indoor fan motor is controlled by Cold Air Preventive System.
6. COLD AIR PREVENTIVE SYSTEM (ONLY AVAILABLE FOR HEAT PUMP)
lThis system is intended to prevent cold air from being discharged during
HEATING operation.
lThe indoor fan motor speed will be controlled as following.(for7K, 9K, 12K, 18K
and 22K heat pump)
Set Temp +1
o
(Comp Off)
Set Temp -1
o
(Comp On)

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Model No:AC -S13CK_S13HK
Version 1.0
lThe indoor fan motor speed will be controlled as following.(for 24K heat pump)
7. SMART MODE OPERATION
lWhen SMART air conditioning is selected, the operation mode and preset
temperature are set automatically according to the room temperature at starting
operation.
lThe operation procedure of cooling only is as following.
Intake air temperature at
operation start Over 26oCBelow 26oC
Preset temperature 26oCIntake air temperature minus
1.5oC
Operation mode COOLING DRY
*The initial mode will be continued and independent upon the room temperature
changing.
lThe operation procedure of heat pump is as following.

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Model No:AC -S13CK_S13HK
Version 1.0
Intake air temperature at
operation start Over 26oC21oC~ 26oCBelow 21oC
Preset temperature 26oCIntake air temperature at
operation start 22oC
Operation mode COOLING DRY HEATING
The initial mode will be continued and independent upon the room temperature
changing.
lIf initial mode is selected, that mode is continued, independent upon the
temperature changing.
lThe indoor fan motor speed is automatically determined by Auto Fan Speed. If
you are not satisfied with the auto fan speed, you can adjust the fan speed by
pressing the FAN BUTTON.
8. AUTO FAN SPEED
lWhen the Auto Fan Speed is selected in COOLING or HEATING operation, the
indoor fan motor speed is automatically controlled by the intake air temperature
and the preset temperature.
lThe operation procedure of COOLING is as following.
Set temp.+3¡æ
Intake air temp.
Indoor fan
motor speed
Low High
Indoor pipe temperature risesIndoor pipe temperature rises Indoor pipe temperature falls
Set temp.+1¡æ
Intake air temp.
Set temp.
Set temp.+2¡æ
High Medium
Indoor fan
motor speed
Set temp.+1¡æ
Medium Low

18
Model No:AC -S13CK_S13HK
Version 1.0
lThe operation procedure of HEATING is as following.
9. INDOOR FAN SPEED CONTROL
lAuto Fan Speed control
When set to Auto Fan Speed, the indoor fan motor speed is controlled by the
difference between the intake air temperature and the preset temperature. The more
the difference, the higher the indoor fan motor speed. Auto Fan Speed is only
available for COOLING and HEATING modes.
lManual fan speed control
Basic fan motor speed adjustment (3 setting, LOW, MEDIUM and HIGH) can be
conducted by using the Fan Speed Selection button on the remote controller.
lThe indoor fan speed in different modes is shown as following.
Fan Speed High(H) Medium(M) Low(L) Stop
COOLING Manual OK OK OK N/A
Automatic OK OK OK N/A
HEATING Manual OK OK OK N/A
Automatic OK OK OK N/A
Cold Air Preventive OK OK OK OK
DRY N/A N/A OK N/A
FAN ONLY OK OK OK N/A
Indoor pipe temperature risesIndoor pipe temperature rises Indoor pipe temperature falls
Medium Low
Indoor fan
motor speed
Intake air temp.
Set temp.-2¡æ
Set temp.
Intake air temp.
Set temp.-1¡æ
Set temp.-3¡æ
Low
High HighMedium
Indoor fan
motor speed

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Model No:AC -S13CK_S13HK
Version 1.0
10. EMERGENT START
lIf you lose the remote controller or it is out of work, you can also operate the
appliance by pressing the EMERGENT BUTTON on the indoor unit for an
emergent start.
lThe operation mode is SMART if an emergent start is presented when the
appliance is connected to the power at first time. If the appliance is in stand by,
the operation mode will restore the last time setting when you press the
EMERGENT BUTTON.
11. AUTORESTART FUNCTION
When the unit is connected to power, pressing the EMERGENT BOTTON for over
5 seconds;
if the unit without auto restart function, it will be of the function of auto restart
after the buzzer 1 beeps;
if the unit with auto restart function, it will discharge the auto restart function
after the buzzer 1 beeps.
12. DEFROST
lThe defrost timer (integrating the operation time of compressor)counts time by
microprocessor during HEATING operation.
l50 minutes later after starting HEATING operation or after defrost, when the
outdoor pipe temperature falls to –8oC, the defrosting is started. When the
outdoor pipe temperature exceeds 8oCor the defrosting time reaches 10
minutes, the defrosting is ended.
lDuring the defrosting operation, the red LED indicator on the indoor unit of the
appliance flickers.
lIn the defrost operation, firstly the compressor and the outdoor fan motor are
turned OFF. 59 seconds later the reversing valve is turned OFF. 60 seconds
later the compressor is turned ON.
lThe maximum defrost time is 10 minutes.
lIn the end of defrosting, the compressor is turned OFF, 59 seconds later the
reversing valve is turned ON. 60 seconds later the compressor and outdoor fan
motor are turned ON and starting HEATING operation.
lDuring the defrost operation, the indoor fan motor is controlled by Cold Air

20
Model No:AC -S13CK_S13HK
Version 1.0
Preventive System.
lThe HEATING and defrosting operation is alternated as following.
lThe defrosting procedure is shown as following.
Switch ON
Heating
Min 50 mins
Heating
Min 50 mins
Heating
Min 50 mins
Defrosting
Max 10 mins