Kaysun KCI-26DMR11 User manual

OWNER’S MANUAL
Compact Four-Way Cassette
KCI-26DMR11
KCI-35DR11
KCI-52DMR11
KCI-35DVN11
KCI-52DVN10
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this
manual for future reference.

Set
(indoor unit, outdoor unit)
For R-410 units
For R32 units
KCI-35 DVN11
(KCI-35 DR11, KUE-35 DVN11)
✓
✗
KCI-52 DVN10
(KCI-52 DN10, KUE-52 DVN10)
✓
✗
Indoor Units
For R-410 units
For R32 units
KCI-26 DMR11
✓
✓
KCI-35 DR11
✓
✓
KCI-52 DMR11
✓
✓

Table of Contents
Owner’s Manual
Safety Precautions .................................................... 04
Indoor Unit Parts and Major Functions ......... 06
Manual Operations ................................................... 08

Care and Maintenance ............................. 09
a. Unit Maintenance ....................................... 09
b. How to Clean the Air Filter ................... 09
c. Repairing Refrigerant Leaks ................ 10
d. Preparation for Periods of Non-use...... 10
Troubleshooting ................................. 11
a. Common Problems ........................... 11
b. Troubleshooting Tips .................. 12
European Disposal Guidelines .............................................................. 14
Caution: Risk of fire/ flammable
materials

Safety
Precautions
Thank you for purchasing this air conditioner. This manual will provide you with information on how
to operate, maintain, and troubleshoot your air conditioner. Following the instructions will ensure the
proper function and extended lifespan of your unit.
Please pay attention to the following signs:
WARNING
CAUTION
!Page 4 "
Ask an authorized dealer to install this air
The warranty will be voided if the unit is not
installed by professionals.
If abnormal situation arises (like burning
smell), turn off the power supply and call
your dealer for instructions to avoid electric
shock, fire or injury.
DO NOT let the indoor unit or the remote
control get wet. It may cause electric shock
or fire.
DO NOT insert fingers, rods or other objects
into the air inlet or outlet. This may cause
injury, since the fan may be rotating at high
speeds.
DO NOT use a flammable spray such as hair
spray, lacquer or paint near the unit. This
may cause fire or combustion.
Do not use means to accelerate the
defrosting process or to clean, other than
The appliance shall be stored in a room
without continuously operating ignition
sources (for example: open flames, an
operating gas appliance or an operating
electric heater).
The appliance shall be stored so as to
WARNING
• Be aware that the refrigerants may not
contain an odour.
• Compliance with national gas regulations
shall be observed.
• Keep ventilation openings clear of
obstruction.
• DO NOT pierce or burn.
• A warning that the appliance shall be stored
in a well-ventilated area where the room size
corresponds to the room area as specified
for operation.
• Any person who is involved with working on
or breaking into a refrigerant circuit should
hold a current valid certificate from an
industry-accredited assessment authority,
which authorise their competence to handle
refrigerants safely in accordance with an
industry recognised assessment specification.
• Servicing shall only be performed as
recommended by the equipment
manufacturer. Maintenance and repair
requiring the assistance of other skilled
personnel shall be carried out under the
supervision of the person competent in the
use of flammable refrigerants.
Failure to observe a warning may result in death. The appliance must be
t in with tional t
Failure to observe a caution may result in injury or equipment damage.

CAUTION
• DO NOT touch the air outlet while the swing
flap is in motion. Fingers might get caught
or the unit may break down.
• DO NOT inspect the unit by yourself. Ask an
authorized dealer to perform the inspection.
• To prevent product deterioration, do not use
the air conditioner for preservation purposes
(storage of food, plants, animals, works of
art, etc.).
• DO NOT touch the evaporator coils inside
the indoor unit. The evaporator coils are
sharp and may cause injury.
• DO NOT operate the air conditioner with
wet hands. It may cause electric shock.
• DO NOT place items that might be affected
by moisture damage under the indoor unit.
Condensation can occur at a relative
humidity of 80%.
• DO NOT expose heat-producing appliances
to cold air or place them under the indoor
unit. This may cause incomplete combustion
or deformation of the unit due to the heat.
• After long periods of usage, check the
indoor unit to see if anything is damaged. If
the indoor unit is damaged, it may fall and
cause injury.
• If the air conditioner is used together with
other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency.
• DO NOT climb onto or place objects on top
of the outdoor unit.
• DO NOT operate the air conditioner when
using fumigant insecticides. The chemicals
may become layered with the unit and
endanger those who are hypersensitive to
chemicals.
• DO NOT let children play with the air
conditioner.
• DO NOT operate the air conditioner in a wet
room (e.g. bathroom or laundry room). This
can cause electrical shock and cause the
product to deteriorate.
!Page 5 "
• This appliance can be used by children aged
from 8 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. Children shall not play
with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.
Safety
Precautions

Indoor Unit
Parts And Major
Functions
Display panel
Louver
Air inlet
Air outlet
Fig. 2.1
Operating Conditions
Use the system under the following temperatures for safe and effective operation. If the air
conditioner is used under different conditions, it may malfunction or become less efficient.
COOL Mode
HEAT mode
DRY mode
Indoor
Temperature
17-32°C
(62-90°F)
0-30°C
(32-86°F)
17-32°C
(62-90°F)
0-50°C
(32-122°F)
Outdoor
Temperature
-15-50°C
(5-122°F)
-15-24°C
(5-76°F)
0-50°C
(32-122°F)
(low temperature
cooling models)
!Page 6 "
Indoor Unit Parts And Major Functions
Unit Parts

Features
Default Setting
When the air conditioner restarts after a power
failure, it will default to the factory settings
(AUTO mode, AUTO fan, 24°C (76°F)). This
may cause inconsistencies on the remote
control and unit panel. Use your remote
control to update the status.
Auto-Restart (some models)
In case of power failure, the system will
immediately stop. When power returns, the
Operation light on the indoor unit will flash. To
restart the unit, press the ON/OFF button on
the remote control. If the system has an auto
restart function, the unit will restart using the
same settings.
Louver Angle Memory Function (Optional)
Some models are designed with a louver angle
memory function. When the unit restarts after a
power failure, the angle of the horizontal louvers
will automatically return to the previous position.
The angle of the horizontal louver should not be
set too small as condensation may form and drip
into the machine. To reset the louver, press the
manual button, which will reset the horizontal
louver settings.
Refrigerant Leak Detection System
(some models)
In the event of a refrigerant leak, the LCD screen
will display “EC” and the LED indicator light will
flash.
Energy Saving Tips
• DO NOT set the unit to excessive temperature levels.
• While cooling, close the curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air in the room.
• DO NOT place objects near the air inlet and outlet of the unit. This will reduce the efficiency of
the unit.
• Set a timer and use the built-in SLEEP/ECONOMY mode if applicable.
• If you don’t plan to use the unit for a long time, remove the batteries from the remote control.
• Clean the air filter every two weeks. A dirty filter can reduce cooling or heating efficiency.
• Adjust louvers properly and avoid direct airflow.
Closing curtains during heating also
helps keep the heat in
Doors and windows should be kept
closed
!Page 7 "
Indoor Unit
Parts And Major
Functions

Manual
Operations
This display panel on the indoor unit can be used to operate the unit in case the remote control has
been misplaced or is out of batteries.
Opera
Fig. 3.1
Alarm indicator
PRE-DEF
(pre-heating/defrost)
indicator
LED display
Fig. 3.2
• MANUAL button: This button selects the mode in the following order: AUTO, FORCED COOL, OFF.
• FORCED COOL mode: In FORCED COOL mode, the Operation light flashes. The system will then
turn to AUTO after it has cooled with a high wind speed for 30 minutes. The remote control will
be disabled during this operation.
• OFF mode: When the panel is turned OFF, the unit turns off and the remote control is re-enabled.
!Page 8 "
Manual Operations
Manual button
tion indicator
Timer indicator

Safety Precautions
• Contact an authorized service technician for
repair or maintenance. Improper repair and
maintenance may cause water leakage,
electrical shock, or fire, and may void your
warranty.
• DO NOT substitute a blown fuse with a
higher or lower amperage rating fuse, as this
may cause circuit damage or an electrical fire.
• Make sure the drain hose is set up according
to the instructions. Failure to do so could
cause leakage and result in personal
property damage, fire and electric shock.
• Make sure that all wires are connected
properly. Failure to connect wires according
to instructions can result in electrical shock
or fire.
Unit Maintenance
1. Unlock the grille by pushing the two tabs
towards the middle simultaneously.
2. Unplug the display panel cable from the
control box on the main body.
Press tabs to
release grille
Fig. 4.1
3. Detach the grille from the main unit by
holding the grille at a 45° angle, lifting it up
slightly and then pulling the grille forward.
How To Clean The Air Filter
The filter prevents dust and other particles from
entering the indoor unit. Dust buildup can reduce
the efficiency of the air conditioner. For optimum
efficiency, clean the air filter every two weeks or
more frequently if you live in a dusty area. Replace
the filter with a new one if it’s heavily clogged and
cannot be cleaned.
Fig. 4.2
!Page 9 "
Care and Maintenance
Removing and cleaning the filter can be
performed by a certified technician.
WARNING: DO NOT REMOVE OR
NOTE: In households with animals, you will
have to periodically wipe down the grille to
prevent animal hair blocking airflow.
Always turn off your air conditioning system
and disconnect the power supply before
cleaning or maintenance.
DO NOT use chemicals or chemically treated
cloths to clean the unit.
DO NOT use benzene, paint thinner,
polishing powder or other solvents to clean
the unit. They can cause the plastic surface
to crack or deform.
DO NOT wash the unit under running water.
Doing so creates an electrical hazard.
DO NOT use water hotter than 40°C (104°F)
to clean the front panel. This can cause the
panel to become deformed or discolored.
Clean the unit using a damp, lint-free cloth
and neutral detergent. Dry the unit with a
dry, lint-free cloth.
MAINTENANCE
Care And
Maintenance

Care And
Maintenance
4. Remove the air filter.
5. Clean the air filter by vacuuming the surface
or washing it in warm water with mild
detergent.
A. If using a vacuum cleaner, the inlet side
should face the vacuum.
Repairing Refrigerant Leaks
Fig. 4.3
B. If using water, the inlet side should face
down and away from the water stream.
Refrigerant Leak Detection System
(some models)
• In the event of a refrigerant leak, the LCD
screen will display “EC” and the LED indicator
light will flash.
Fig. 4.4
6. Rinse the filter with clean water and allow it
to air-dry. DO NOT let the filter dry in direct
sunlight.
7. Reinstall the filter.
8. Reinstall the front grille and reconnect the
display panel cable to the control box on the
main body.
Preparation for Periods of Non-Use
Maintenance after Extended Non-Use
1. Remove any obstacles blocking the vents of
both the indoor and outdoor units.
2. Clean the air filter and the front grille of the
indoor unit. Reinstall the clean, dry air filter in
its original position.
3. Turn on the main power switch at least 12
hours prior to operating the unit.
Storing the Unit While Not In Use
1. Run the appliance on FAN mode for 12 hours
in a warm room to dry it and prevent mold.
2. Turn off the appliance and unplug it.
3. Clean the air filter according to the instructions
in the previous section. Reinstall the clean, dry
filter before storing.
4. Remove the batteries from the remote control.
!Page 10 "
If the refrigerant leaks, turn off the air
conditioner and any combustible heating
devices, ventilate the room and call your
and flammable. DO NOT use the air
conditioner until the leak is repaired.
When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration from
exceeding the safety limit in the event of
refrigerant leakage. Concentrated
threat.
WARNING

• The operation light continues to flash rapidly after the unit has been restarted.
• The remote-control buttons do not work.
• The unit continually trips fuses or circuit breakers.
• A foreign object or water enters the air conditioner.
• Other abnormal situations.
Common Problems
The following symptoms are not a malfunction and, in most situations, will not require repairs.
Problem Possible Causes
Unit does not
turn on when
pressing ON/
OFF button
The unit has a 3-minute protection feature that prevents the unit from
overloading. The unit cannot be restarted within three minutes of being
turned off.
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/
Defrost) indicators are lit up, the outdoor temperature is too cold, and the
unit’s anti-cold wind is activated in order to defrost the unit.
In Cooling-only Models: If the “Fan Only” indicator is lit up; the outdoor
temperature is too cold, and the unit’s anti-freeze protection is activated
in order to defrost the unit.
The unit changes
from COOL mode
to FAN mode
The unit changes its setting to prevent frost from forming on the unit. Once
the temperature increases, the unit will start operating again.
The set temperature has been reached, at which point the unit turns off the
compressor. The unit will resume operating when the temperature fluctuates
again.
The indoor unit
emits white mist
In humid regions, a large temperature difference between the room’s air and
the conditioned air can cause white mist.
Both the indoor
and outdoor units
emit white mist
When the unit restarts in HEAT mode after defrosting, white mist may be
emitted due to moisture generated from the defrosting process.
The indoor unit
makes noises
A squeaking sound is heard when the system is OFF or in COOL mode. The
noise is also heard when the drain pump (optional) is in operation.
A squeaking sound may occur after running the unit in HEAT mode due to
expansion and contraction of the unit’s plastic parts.
Both the indoor
unit and outdoor
unit make noises
A low hissing sound may occur during operation. This is normal and is caused
by refrigerant gas flowing through both the indoor and outdoor units.
A low hissing sound may be heard when the system starts, has just stopped
running or is defrosting. This noise is normal and is caused by the refrigerant
gas stopping or changing direction.
The outdoor unit
makes noises
The unit will make different sounds based on its current operating mode.
!Page 11 "
If one of the following conditions occurs, switch off the power supply immediately and contact
your dealer for further assistance.
CAUTIONS
Troubleshooting

Problem Possible Causes
Dust is emitted from
either the indoor or
outdoor unit
The unit may accumulate dust during extended periods of non-use, which
will be emitted when the unit is turned on. This can be mitigated by covering
the unit during long periods of inactivity.
The unit emits a
bad odor
The unit may absorb odors from the environment (such as furniture, cooking,
cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the
outdoor unit
does not operate
During operation, the fan speed is controlled to optimize product operation.
Troubleshooting Tips
When troubles occur, please check the following points before contacting a repair company.
Problem Possible Causes Solution
The unit
is not
working
Power failure
Wait for the power to be restored
The power switch is off
Turn on the power
The fuse is burned out
Replace the fuse
Remote control batteries are dead
Replace the remote control batteries
The unit’s 3-minute protection has
been activated
Wait three minutes after restarting the unit
Poor cooling
performance
Temperature setting may be higher
than the ambient room temperature
Lower the temperature setting
The heat exchanger on the indoor
or outdoor unit is dirty
Clean the affected heat exchanger
The air filter is dirty
Remove the filter and clean it according
to instructions
The air inlet or outlet of either unit
is blocked
Turn the unit off, remove the obstruction
and turn it back on
Doors and windows are open
Make sure that all doors and windows are
closed while operating the unit
Excessive heat is generated by
sunlight
Close windows and curtains during
periods of high heat or bright sunshine
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if necessary and
top off refrigerant
The unit
starts and
stops
frequently
There’s too much or too little
refrigerant in the system
Check for leaks and recharge the system
with refrigerant
There is air, incompressible gas or
foreign material in the refrigeration
system.
Evacuate and recharge the system with
refrigerant
System circuit is blocked
Determine which circuit is blocked and replace
the malfunctioning piece of equipment
The compressor is broken
Replace the compressor
The voltage is too high or too low
Install a manostat to regulate the voltage
Poor heating
performance
The outdoor temperature is lower
than 7°C (44.5°F)
Check for leaks and recharge the system
with refrigerant
Cold air is entering through doors
and windows
Make sure that all doors and windows are
closed during use
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if necessary and
top off refrigerant
!Page 12 "
Troubleshooting

Error Codes
1
Indoor EEPROM (Electrically Erasable
Programmable Read-Only Memory) error
1
Off
E0
2
Indoor and outdoor unit communication malfunction
2
Off
E 1
3
Indoor fan speed malfunction
4
Off
E3
4
Indoor room temperature sensor error
5
Off
E4
5
Evaporator coil temperature sensor error
6
Off
E5
6
Refrigerant leak detection system malfunction
7
Off
EC
7
Water level alarm malfunction
8
Off
EE
8
Dual indoor unit (twin model only)
communication malfunction
9
Off
E8
9
Other twin model malfunction
10
Off
E9
10
Overload protection
1
On
F0
11
Outdoor temperature sensor error
2
On
F 1
12
Outdoor condenser pipe sensor error
3
On
F2
13
Discharge air temperature sensor error
4
On
F3
14
Outdoor EEPROM (Electrically Erasable
Programmable Read-Only Memory) error
5
On
F4
15
Outdoor fan speed (DC fan motor only) malfunction
6
On
F5
16
Inverter module IPM protection
1
Flash
P0
17
High/Low voltage protection
2
Flash
P 1
18
Compressor top overheating protection
3
Flash
P2
19
Outdoor low temperature protection
4
Flash
P3
20
Compressor drive error
5
Flash
P4
21
Mode conflict
6
Flash
P5
22
Compressor low-pressure protection
7
Flash
P6
23
Outdoor IGBT sensor error
8
Flash
P7
!Page 13 "
Troubleshooting

European Disposal
Guidelines
Users in European Countries may be required to properly dispose of this unit. This appliance contains
refrigerant and other potentially hazardous materials. When disposing of this appliance, the law
requires special collection and treatment. DO NOT dispose of this product as household waste or
unsorted municipal waste.
When disposing of this appliance, you have the following options:
• Dispose of the appliance at designated municipal electronic waste collection facility.
• When buying a new appliance, the retailer will take back the old appliance free of charge.
• The manufacturer will also take back the old appliance free of charge.
• Sell the appliance to certified scrap metal dealers.
The design and specifications are subject to change without prior notice for product
improvement. Consult with the sales agency or manufacturer for details.
QSBPQ4U-056AEN(R32)(A3)
16122500000349
20170905
NOTE: Disposing of this appliance in the forest or other natural surroundings endangers your health
and is bad for the environment. Hazardous substances may leak into the ground water and enter
the food chain.