Tosot SMART INVERTER Series User manual

EN
Split Air Conditioner
SMART INVERTER Series
MODELS:
OWNER’S MANUAL
For proper operation, please read and keep
this manual carefully.
GS-07D
GS-09DW
GS-12DW
GS-18DW
GS-24DW

Precautions
WARNING
Do not connect air conditioner to multi-purpose socket.
This appliance can be used by children aged from 8
Operation and Maintenance
If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
Do not spray water on indoor unit. It may cause electric
shock or malfunction.
Otherwise, it may cause fire hazard.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by
children without supervision.
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Do not wash the air conditioner with water to avoid
electric shock.
After removing the filter, do not touch fins to avoid injury.
Do not use fire or hair dryer to dry the filter to avoid
deformation or fire hazard.
Do disconnect power supply when cleaning air
conditioner. Otherwise, it may cause electric shock.
2

Precautions
Do not block air outlet or air inlet. It may cause
malfunction.
remote controller may be broken.
●Power cord is overheating or damaged.
●There’s abnormal sound during operation.
●Circuit break trips off frequently.
●Air conditioner gives off burning smell.
●Indoor unit is leaking.
contact the dealer or qualified professionals for service.
When turning on or turning off the unit by emergency
operation switch, please press this switch with an insulating
object other than metal.
outlet. It may cause personal injury or damage.
WARNING
conditioner and disconnect power immediately, and then
If the air conditioner operates under abnormal conditions,
it may cause malfunction, electric shock or fire hazard.
Do not spill water on the remote controller, otherwise the
electric shock or damage. Please contact dealer when
you need to repair air conditioner.
Do not repair air conditioner by yourself. It may cause
objects. It may cause damage or personal injury.
Do not step on top panel of outdoor unit, or put heavy
When below phenomenon occurs, please turn off air
Do not extend fingers or objects into air inlet or air
Maintenance must be performed by qualified
professionals. Otherwise, it may cause personal injury
or damage.
3

Do install the circuit break. If not, it may cause malfunction.
According to the local safety regulations, use qualified
power supply circuit and circuit break.
WARNING
Must follow the electric safety regulations when installing
the unit.
Be sure to cut off the power supply before proceeding
any work related to electricity and safety.
Don't use unqualified power cord.
Make sure the power supply matches with the requirement
of air conditioner. Unstable power supply or incorrect wiring
may result in electric shock, fire hazard or malfunction.
Please install proper power supply cables before using the
air conditioner.
Properly connect the live wire, neutral wire and
grounding wire of power socket.
Installation must be performed by qualified professionals.
Otherwise, it may cause personal injury or damage.
Attachment
An all-pole disconnection switch having a contact separation
of at least 3mm in all poles should be connected in fixed
wiring.
Including an circuit break with suitable capacity, please
note
the following table. Air switch should be included
magnet buckle and heating buckle function, it can protect
the circuit-short and overload.
Air Conditioner should be properly grounded. Incorrect
grounding may cause electric shock.
Precautions
4

Precautions
Installation must be performed in accordance with the
persons in order to avoid a hazard.
must be properly grounding with specialized grounding
device by a professional. Please make sure it is always
grounded effectively, otherwise it may cause electric shock.
The appliance must be positioned so that the plug is
accessible.
If the length of power connection wire is insufficient, please
contact the supplier for a new one. Avoid extending the
wire by yourself.
All wires of indoor unit and outdoor unit should be
connected by a professional.
national wiring regulations.
requirement of NEC and CEC by authorized personnel
only.
WARNING
wire, which can't be used for other purposes.
The grounding resistance should comply with national
electric safety regulations.
The air conditioner is the first class electric appliance. It
keep the interconnection cable away from the copper
tube.
The temperature of refrigerant circuit will be high, please
the manufacturer, its service agent or similarly qualified
If the supply cord is damaged, it must be replaced by
The yellow-green wire in air conditioner is grounding
The appliance shall be installed in accordance with
Do not put through the power before finishing installation.
5

Precautions
The indoor unit should be installed close to the wall.
Instructions for installation and use of this product are
provided by the manufacturer.
WARNING
place, only the qualified person can perform the work.
Otherwise, it may cause personal injury or damage.
If you need to relocate the air conditioner to another
must be installed in the line.
For the air conditioner without plug, an circuit break
far away from animals or plants.If it is unavoidable,
please add the fence for safety purpose.
Select a location which is out of reach for children and
reachable after finishing installation.
For the air conditioner with plug, the plug should be
Working temperature range
NOTICE:
6
Indoor side DB/WB(℃) Outdoor side DB/WB(℃)
Maximum cooling 32/23 43/26
Maximum heating 27/- 24/18
●The operating temperature range (outdoor temperature) for cooling only unit is
-15℃~ 43℃; for heat pump unit is -15℃~ 43℃.

(Display content or position may be different from above
graphics, please refer to actual products)
Parts Name
Indoor Unit
remote controller
NOTICE:
Actual product may be different from above graphics, please refer
to actual products.
7
(Display content or position may be different from above
graphics, please refer to actual products)
air inlet
panel
aux.button
horizontal louver
air outlet
temp. indicator power indicator
receiver window

8
Buttons on remote controller
Introduction for icons on display screen
1
14
3
1
13
2
2
5
4
6
7
8
11
12
13
9
14
15
ON/OFF button
▲ button
3
FAN button
SWING button
TIMER OFF button
TURBO button
10
TEMP button
WiFi button
button
CLOCK button
TIMER ON button
SLEEP button
Send signal
Turbo mode
8℃heating function
Set temperature
Set time
TIMER ON /
TIMER OFF
Child lock
Up & down swing
Set fan speed
ventilation operation
Light Temp. display type
:Set temp.
:Outdoor ambient temp. :Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
I feel
6
9
8
12
15
4
7
10
5
11
X-FAN button
/
MODE button
▲
button
health function
X-fan mode
WiFi This is a general remote controller.Some
models have this function while some
do not. Please refer to the actual models.
{

●This is a general use remote controller, it could be used for the air conditioners
●
●
●Under off status, set temperature and clock icon will be displayed on the display
1
2
* Note: Only for models with heating function.
, or is sent out,
9
Introduction for buttons on remote controller
Note:
with multifunction; For some function, which the model doesn't have, if press
the corresponding button on the remote controller that the unit will keep the
original running status.
After putting through the power, the air conditioner will give out a sound.
Operation indicator " " is ON (red indicator, the colour is different for different
models). After that, you can operate the air conditioner by using remote controller.
Under on status, pressing the button on the remote controller, the signal icon " "
on the display of remote controller will blink once and the air conditioner will give
out a “di” sound, which means the signal has been sent to the air conditioner.
ON/OFF button
Press this button to turn on the unit. Press this button again to turn off the unit.
▲ button
Press this button to increase set temperature. Holding it down above 2 seconds
rapidly increases set temperature. In AUTO mode, set temperature is not adjustable.
3MODE button
Each time you press this button,a mode is selected in a sequence that goes from
AUTO, COOL, DRY, FAN, and HEAT *, as the following:
AUTO COOL DRY FAN HEAT*
After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will
not be displayed on the LCD, and the unit will automatically select the suitable opera-
tion mode in accordance with the room temperature to make indoor room comfortable.
4SWING button
Press this button to set up & down swing angle, which circularly changes as below:
OFF
This remote controller is universal . If any command
the unit will carry out the command as
indicates the guide louver swings as:
of remote controller (If timer on, timer off and light functions are set, the corre-
sponding icons will be displayed on the display of remote controller at the same
time); Under on status, the display will show the corresponding set function icons.

10
Introduction for buttons on remote controller
FAN button
6
CLOCK button
8
This button is used for setting Fan Speed in the sequence that goes from AUTO,
TIMER OFF button
7
Press this button to initiate the auto-off timer. To cancel the auto-timer program,
simply press the button again.TIMER OFF setting is the same as TIMER ON.
Press CLOCK button, blinking. Within 5 seconds, pressing ▲ or button adjusts
TIMER ON button
9
Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply
press this button again.
After press of this button, disappears and "ON "blinks.
00:00 is displayed for ON time
setting. Within 5 seconds, press ▲ or button to adjust the time value. Every press of
either button changes the time setting by 1 minute. Holding down either button rapidly
changes the time setting by 1 minute and then 10 minutes. Within 5 Seconds after
setting, press TIMER ON button to confirm.
the present time. Holding down either button above 2 seconds increases or decreases
the time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During
blinking after setting, press CLOCK button again to confirm the setting, and then
will be constantly displayed.
, to , then back to Auto. Auto
Low speed Medium speed High speed
▲
▲
button
5
Press this button to decrease set temperature. Holding it down above 2 seconds
rapidly decreases set temperature. In AUTO mode, set temperature is not adjustable.
▲
This function indicates that moisture on evaporator of indoor unit will be blowed
after the unit is stopped to avoid mould.
Having set X-FAN function on: After turning off the unit by pressing ON/OFF
button indoor fan will continue running for a few minutes. at low speed. In this
period, Hold fan speed button for2s to stop indoor fan directly.
Having set X-FAN function off: After turning off the unit by pressing ON/OFF
button, the complete unit will be off directly.
X-FAN function Hold fan speed button for 2s in COOL or DRY mode, the icon “ ” is
displayed and the indoor fan will continue operation for a few minutes in order to dry
the indoor unit even though you have turned off the unit. After energization, X-FAN
OFF is defaulted. X-FAN is not available in AUTO, FAN or HEAT mode.
●
●
●
Note:
● It’s Low fan speed under Dry mode.
● Under AUTO speed, air conditioner will select proper fan speed automatically
according to ex-factory setting.

•It’s defaulted to display set temperature when turning on the unit.
Only for the models with temperature indicator on indoor unit.
12 TURBO button
•
●This function is only available for some models.
11
Introduction for buttons on remote controller
10 SLEEP button
Press this button to go into the SLEEP operation mode. Press it again to cancel this
function. This function is available in COOL, HEAT (Only for models with heating
function) to maintain the most comfortable temperature for you.
When selecting " " with remote controller or no display, temperature indicator on indoor
unit displays set temperature; When selecting " " with remote controller, temperature
indicator on indoor unit displays indoor ambient temperature; 3s later or within 3s it
Press this button to activate / deactivate the Turbo function which enables the unit to
reach the preset temperature in the shortest time. In COOL mode, the unit will blow
strong cooling air at super high fan speed. In HEAT mode, the unit will blow strong
heating air at super high fan speed.
14 WiFi button
When WiFi function is turned on, " WiFi " icon will be displayed on the remote
controller; when WiFi function is turned off, " WiFi " icon will disappear.
How to turn on WiFi：Press " WiFi " button to turn on WiFi function.
How to turn off WiFi：Hold " WiFi " button for 5s to turn off WiFi function.
Under off status, press "MODE" and " WiFi " buttons simultaneously for 1s,
WiFi module will restore factory settings.
receives other remote controller signal that will return to display the setting temperature.
Caution:
•
This model hasn't outdoor ambient temperature display function. While remote controller
can operate " " and indoor unit displays set temperature.
11 TEMP button
Press this button, you can see indoor set temperature, indoor ambient temperature
on indoor unit’s display. The setting on remote controller is selected circularly as below:
no display
13 X-FAN button
X-FAN function: In COOL or DRY mode, the icon is displayed and the indoor fan
will continue operation for 2 minutes in order to dry the indoor unit even though you
have turned off the unit. After energization, X-FAN OFF is defaulted. X-FAN is not
available in AUTO, FAN or HEAT mode.
function: turn on the display's light and press this button again to turn off the display's
light. If the light is turned on, is displayed. If the light is turned off, disappears.

12
Combination of "▲" and " " bu
▲
ttons: About lock
Combination of "MODE" and "
▲
" buttons:
.
About switch between Fahrenheit and centigrade
At unit OFF, press "MODE" and " " buttons simultaneously to
▲
switch between ℃and ℉
Press "TEMP" and "CLOCK" simultaneously in COOL mode to start energy-saving function.
Nixie tube on the remote controller displays " SE " . Repeat the operation to quit the function.
About Energy-saving Function
Press "▲" and " "
▲
buttons simultaneously to lock or unlock the keypad. If the remote
controller is locked, is displayed. In this case, pressing any button, blinks three times.
Combination of "TEMP" and "CLOCK" buttons:
Function introduction for combination buttons
Combination of "TEMP" and "CLOCK" buttons:
About 8
℃ Heating Function
Press "TEMP" and "CLOCK" simultaneously in HEAT mode to start 8 ℃ Heating Function
Nixie tube on the remote controller displays " " and a selected temperature of " 8℃ " .
(46℉if Fahrenheit is adopted). Repeat the operation to quit the function.
I FEEL Function
Introduction for buttons on remote controller
●
ture. Press this two buttons simultaneously again to close I FEEL function and " "
will disappear.
Please put the remote controller near user when this function is set. Do not put
15 /button
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fourth time to start health function; LCD display " ". Press this button again to repeat
the operation above. (This function is applicable to partial of models)
the remote controller near the object of high temperature or low temperature in
order to avoid detecting inaccurate ambient temperature.
●
Press "▲" and "MODE" buttons simultaneously to start I FEEL function and " "
will be displayed on the remote controller. After this function is set, the remote
controller will send the detected ambient temperature to the controller and the unit
will automatically adjust the indoor temperature according to the detected tempera-
When I FEEL function is turned on, the remote controller should be put within the
area where indoor unit can receive the signal sent by the remote controller.

1.After putting through the power, press "ON/OFF" button on remote controller to
turn on the air conditioner.
2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN,
HEAT.
3. Press "▲" or " " button to set your required temperature. (Temperature can’t
be adjusted under auto mode).
4. Press "FAN" button to set your required fan speed: auto, low, medium and high
speed.
5. Press "SWING" button to select fan blowing angle.
Operation guide
▲
Replacement of batteries in remote controller
1. Press the back side of remote controller marked
the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and
make sure the position of "▲" polar and " " polar
are correct.
3. Reinstall the cover of battery box.
NOTICE
● During operation, point the remote control signal sender at the receiving
window on indoor unit.
●The distance between signal sender and receiving window should be no
more than 8m, and there should be no obstacles between them.
or wireless telephone; remote controller should be close to indoor unit during
operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the
batteries.
● If the display on remote controller is fuzzy or there’s no display, please
replace batteries.
▲
battery
Cover of battery box
remove
reinstall
13

NOTICE: Checking before use-season/Checking after use-season
■
■ After removing the filter, do not touch fins to avoid injury.
■
WARNING
The filter should be cleaned every three months. If there is much dust in the
operation environment, clean frequency can be increased.
Do not use fire or hair dryer to drythe filter to avoiddeformation or fire hazard.
Clean and Maintenance
1
2
3
4
●
●
Remove the filter as indicated
in the fig.
Install the filter and then close the panel
cover tightly.
14
■
■
Use dust catcher or water to clean the filter.
When the filter is very dirty, use the water
(below 45℃) to clean it, and then put it in
a shady and cool place to dry.
Open panel
Pull out the panelto acertain
angle as shown in the fig.
■
■
● Do not remove the panel when cleaning it.
WARNING
NOTICE:
Clean surface of indoor unit
When the surface of indoor unit is dirty, it is recommended to use asoft dry cloth
or wet cloth to wipe it.
Turn off the air conditioner and disconnect the power before cleaning the air
conditioner to avoid electric shock.
Do not wash the air conditioner with water to avoid electric shock.
Do not use volatile liquid to clean the air conditioner.
Do not use liquid or corrosive detergent clean the appliance and do not
splash
water or other liquid onto it, otherwise,it may damage the plastic
components, even cause electric shock.

15
Malfunction analysis
General phenomenon analysis
Please check below items before asking for maintenance. If the malfunction still
Phenomenon Check items Solution
Indoor unit
can’t receive
remote
signal or
remote
controller
controller’s
has no
action.
●
Whether remote controller is●within the signal receiving
range?
●Whether there are obstacles?
●Whether remote controller is
Whether it's interfered severely
(such as static electricity, stable
voltage)?
●
pointing at the receiving
window?
Is sensitivity of remote contro-
ller low; fuzzy display and no
display?
●
●
No display when operating
remote controller?
Fluorescent lamp in room?
●
●Signal receiving range is 8m.
●
Pull out the plug. Reinsert
the plug after about 3min, and
then turn on the unit again.
Remove obstacles.
● Select proper angle and point
the remote controller at the re-
ceiving window on indoor unit.
●Check the batteries. If the
●
power of batteries is too low,
please replace them.
●Check whether remote cont-
roller appears to be damaged.
If yes, replace it.
Take the remote controller
close to indoor unit.
and then try it again.
No air
emitted
from
indoor
unit
●Air inlet or air outlet of indoor
unit is blocked? ●Eliminate obstacles.
● ●Under heating mode, indoor
temperature is reached to set
temperature?
After reaching to set temper-
●
ature, indoor unit will stop bl-
owing out air.
Heating mode is turned on just
now? ●In order to prevent blowing out cold air, indoor unit will be
started after delaying for sev-
eral minutes, which is a nor-
mal phenomenon.
fluorescent

Malfunction analysis
16
● Power failure?
● Is plug loose?
● Air switch trips off or fuse is
burnt out?
● Wiring has malfunction?
● Unit has restarted immediately
after stopping operation?
● Whether the function setting
for remote controller is
correct? ● Reset the function.
● Wait for 3min, and then turn
on the unit again.
● Ask professional to replace it.
● Ask professional to replace
air switch or fuse.
● Reinsert the plug.
● Wait until power recovery.
Air condit-
ioner can’t
operate
Mist is em-
itted from
indoor unit’s
air outlet
● Indoor temperature and hum-
idity is high?
● Because indoor air is cooled
rapidly. After a while, indoor
temperature and humidity will
be decrease and mist will
disappear.
Phenomenon Check items Solution
Set temper-
ature can’t
be adjusted
● Unit is operating under auto
mode?
● Temperature can’t be adju-
sted under auto mode.
Please switch the operation
mode if you need to adjust
temperature.
● Your required temperature
exceeds the set temperature
range?
● Set temperature range:
16℃~30℃.
Cooling
(heating)
effect is
not good.
V● oltage is too low? ● Wait until the voltage
resumes normal.
● Filter is dirty?
● Set temperature is in proper
range? ● Adjust temperature to proper
range.
● Door and window are open? ● Close door and window.
Odours are
emitted
● Whether there’s odour source,
such as furniture and cigarette,
etc.
● Eliminate the odour source.

■ When below phenomenon occurs, please turn off air conditioner and discon-
for service.
Malfunction analysis
17
Note: If there're other error codes, please contact qualified professionals for service.
Error code
E5/E6/E8/
U8/H3/H6
C5/F0/F1/F2
Troubleshooting
It can be eliminated after restarting the unit. If not, please
Error Code
Indoor
display
Error code
Above indicator diagram is only
for reference. Please refer to
actual product for the actual
indicator and position.
● Power cord is overheating or damaged.
● There’s abnormal sound during operation. ● Air switch trips off frequently.
● Air conditioner gives off burning smell. ● Indoor unit is leaking.
■ If the air conditioner operates under abnormal conditions, it may cause
WARNING
● When air conditioner status is abnormal, temperature indicator on indoor unit will
ation of error code.
● Whether there’s inter-
ference, such as thunder,
wireless devices, etc.
● Disconnect power, put back
power, and then turn on the
unit again.
Air conditio-
ner operates
abnormally
Phenomenon Check items Solution
“Water
noise
● Air conditioner is turned on or
turned off just now?
● The noise is the sound of
the unit, which is a normal
phenomenon.
Cracking
noise
● Air conditioner is turned on or
turned off just now?
● This is the sound of friction
caused by expansion and/or
contraction of panel or other
parts due to the change of
temperature.

table a - Minimum room area ( m )
2
18
All the work men who are engaging in the refrigeration system should bear the
valid certification awarded by the authoritative organization and the qualification
for dealing with the refrigeration system recognized by this industry. If it needs
other technician to maintain and repair the appliance, they should be supervised
by the person who bears the qualification for using the flammable refrigerant.
It can only be repaired by the method suggested by the equipment’s manufacturer.
Safety operation of flammable refrigerant
Qualification requirement for installation and maintenance man
Installation notes
The air conditioner is not allowed to use in a room that has running fire (such as fire
source, working coal gas ware, operating heater).
Maintenance notes
Welding
Check whether the maintenance area or the room area meet the requirement of the
nameplate.
- It’s only allowed to be operated in the rooms that meet the requirement of the
Check whether the maintenance area is well-ventilated.
- The continuous ventilation status should be kept during the operation process.
Check whether there is fire source or potential fire source in the maintenance area.
- The naked flame is prohibited in the maintenance area; and the “no smoking”
warning board should be hanged.
nameplate.
Check whether the appliance mark is in good condition.
- Replace the vague or damaged warning mark.
If you should cut or weld the refrigerant system pipes in the process of maintaining,
please follow the steps as below:
It is not allowed to drill hole or burn the connection pipe.
The air conditioner must be installed in a room that is larger than the minimum room
area. The minimum room area is shown on the nameplate or following table a.
Leak test is a must after installation.
Charge amount (kg) ≤1.21.31.41.51.61.71.81.9 22.1 2.2 2.3 2.4 2.5
/
/
/
/14.516.819.3 22 24.8 27.8 3134.3 37.8 41.5 45.4 49.4 53.6
5.2 6.17 7.98.9 1011.212.413.61516.317.819.3
1.61.9 2.1 2.4 2.8 3.13.4 3.8 4.2 4.6 5 5.5 6
1.1 1.31.41.61.8 2.12.3 2.6 2.8 3.13.4 3.7 4
floor location
wall mounted
window mounted
ceiling mounted
Minimum
room 2
area( m )

19
Safety operation of flammable refrigerant
Filling the refrigerant
Safety instructions for transportation and storage
a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N 2 gas
e. Cutting or welding
f. Carry back to the service spot for welding
The refrigerant should be recycled into the specialized storage tank.
Make sure that there isn’t any naked flame near the outlet of the vacuum pump
and it’s well-ventilated.
Use the refrigerant filling appliances specialized for R32. Make sure that different
kinds of refrigerant won’t contaminate with each other.
After filling is finished, please do the leakage detection before test running; another
time of leak detection should be done when it’s removed.
Please use the flammable gas detector to check before unload and open the container.
No fire source and smoking.
According to the local rules and laws.
The refrigerant tank should be kept upright at the time of filling refrigerant.
Stick the label on the system after filling is finished (or haven’t finished).
Don’t overfilling.

20
Installation dimension diagram
At least 250cm
At least 15cm
At least 300cm
Space to the ceiling
Space to the obstruction
At least 15cm
At least 15cm
Space to the wall
Space to the wall