Kaysun KAM2-42 DR8 User manual

IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning
unit. Make sure to save this manual for future reference.
This manual only describes the outdoor unit of user's. When using the indoor unit,
refer to the user's manual of indoor unit.
OWNER'S MANUAL
Outdoor Units R-32
KAM2-42 DR7
KAM2-52 DR7.1
KAM3-62 DR7
KAM2-42 DR8
KAM3-78 DR7.1
KAM4-80 DR7
KAM4-105 DR7
KAM5-120 DR7
KAM5-120 DR8
KAM2-52 DR8
KAM3-62 DR8
KAM3-78 DR8

Table of Contents
Page
0. Safety Precautions ........................................................................................ 4
1. Unit Parts and Major Functions ................................................................... 6
2. Manual Operation and Maintenance .......................................................... 10
3. Troubleshooting............................................................................................ 11
a. Common Problems
b. Troubleshooting Tips
5. European Disposal Guidelines ..................................................................... 13
Caution: Risk of fire
(for R-32 Refrigerant only)
WARNING: Servicing shall only be perfomed 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. For more details, please refer to the Information on servicing on INSTALLATION MANUAL.
(This is only required for the unit adopts R-32 Refrigerant).

Page 4 
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
• Ask an authorized dealer to install this air conditioner.
Inappropiate installation may cause water leakage,
electric shock, or fire.
• 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 those recommended by
the manufacturer.
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Be aware that the refrigerants may not contain an
odour.
0. Safety Precautions
• 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 authorises 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 personeel shall
be carried out under the supervision of the person
competent in the use of flammable refrigerants.
• The appliance shall be installed in accordance with
national wiring regulations..
Failure to observe a warning may result in serious injuries. The appliance must be installed in
accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.
WARNING
CAUTION
This symbol indicates that you must never perform the action indicated.

Page 5 
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.
• This appliance can be used by children aged from 8
years and above and people 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.

One-five
One-five
One-four
One-four
One-three
One-three
One-twin
One-twin
Page 6 
1. Unit Parts and Major Functions
Unit Parts
Wall-Mounted type Duct / Ceiling type
Fig. 2.1
Indoor unit
1. Panel frame
2. Rear air intake grille
3. Front panel
4. Air purifying filter & Air filter (behind)
5. Horizontal louver
6. LCD display window
7. Vertical louver
8. Manual control button (behind)
9. Remote controller holder
Outdoor unit
10. Drain hose, refrigerant connecting pipe
11. Connective cable
12. Stop valve
13. Fan hood
Fig. 2.2
Indoor unit
1. Air outlet
2. Air inlet
3. Air filter
4. Electric control cabinet
5. Wire controller
Outdoor unit
6. Drain hose, refrigerant connecting pipe
7. Connective cable
8. Stop valve
9. Fan hood

One-five One-five
One-four One-four
One-three One-three
One-twin
One-twin
Page 7 
Floor and standing type (console) Compact four-way cassette type
Fig. 2.3
Indoor unit
1. Air flow louver (at air outlet)
2. Air inlet (containing air filter)
3. Remote controller
4. Installation part
5. Display panel
Outdoor unit
6. Drain hose, refrigerant connecting pipe
7. Connective cable
8. Stop valve
9. Fan hood
Fig. 2.4
Indoor unit
1. Drain pump (drain water from indoor unit)
2. Drain hose
3. Air outlet
4. Air inlet
5. Air-in grill
6. Display panel
7. Remote controllerr
Outdoor unit
8. Refrigerant connecting pipe
9. Connective cable
10. Stop valve
11. Fan hood

Page 8 
NOTE: For multi-split type air conditioners, one outdoor unit can be matched to different types of indoor units. All of the
pictures in this manual are for demonstration purposes only. Your air conditioner may be slightly different, if similar in
shape. The following pages introduce several kinds of indoor units that can be matched with the outdoor units.
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
Room Temperature 17°C - 32°C (63°F - 90°F) 0°C - 30°C (32°F - 86°F) 17°C - 32°C (50°F - 90°F)
Outdoor Temperature
0°C - 50°C (32°F - 122°F)
-15°C - 30ºC (5°F - 86°F)
0°C - 50°C (32°F - 122°F)
-15°C - 50°C (5°F - 122°F)
(for models with low-temp cooling
systems)
0°C - 52°C (32°F - 126°F)
(for special tropical models)
0°C - 52°C (32°F - 126°F)
(for special tropical models)
Features
• Protection of the air conditioner
Compressor protection
The compressor cannot restatr for 3 minutes after it
stops.
• Anti-cold Air (cooling and heating models only)
The unit is designed not to blow cold air on HEAT
mode, when the indoor heat exchanger is in one of the
following three situations and the set temperature has
not been reached.
A. When heating has just started.
B. During defrosting.
C. Low temperature heating.
The indoor or outdoor fan stop running when defrosting
(cooling and heating models only).
• Defrosting (cooling and heating models only)
Frost may be generated on the outdoor unit during
a heat cycle when outdoor temperature is low and
humidity is high resulting in lower heating efficiency in
the air conditioner.
Under these conditions, the air conditioner will stop
heating operations and start defrosting automatically.
The time to defrost may vary from 4 to 10 minutes,
depending the outdoor temperature and the amount
of frost buildup on the outdoor unit.
• 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.
• White mist emerging from the indoor unit
A white mist may be generated due to a large
temperature difference between air inlet and air outlet
on COOL mode in places with high relative humidity.
A white mist may be generated due to moisture created
in the defrosting process when the air conditioner
restarts in HEAT mode operation after defrosting.
• Noise coming from the air conditioner
You may hear a low hissing sound when the compressor
is running or has just stopped running. This sound is the
sound of the refrigerant flowing or coming to a stop.
You may also hear a low "squeaking" sound when
the compressor is running or has just stopped running.
This is caused by tempera heat expansion and cold
contraction of the plastic parts in the unit when the
temperature is changing.
A noise may be heard due to the louver restoring itself
to its original position when power is first turned on.
• Dust blowing out from the indoor unit
This happens when the air conditioner has not been
used for a long time or during its first use.
• Smell emitting from the indoor unit
This is caused by the indoor unit giving off smells
permeated from building materials, furniture or smoke.

Closing curtains during heating also helps
keep the heat in
Doors and windows should be kept closed
Page 9 
• The air conditioner turns to FAN ONLY mode
from COOL or HEAT mode (for cooling and heating
models only)
When the indoor temperature reaches the set
temperature setting, the compressor will stop
automatically, and the air conditioner turns to FAN only
mode. The compressor will start again when the indoor
temperature rises on COOL mode or falls on HEAT
mode to the set point.
Droplets of water may form on the surface of the indoor
unit when cooling occurs in relatively high humidity
(defined as high than 80%). Adjust the horizontal
louver to the maximum air outlet position and select
HIGH fan speed.
• Heating mode (for cooling and heating models only)
The air conditioner draws in heat from the outdoor unit
and releases it via the indoor unit during heating. When
the outdoor temperature falls, heat drawn in by the air
conditioner decreases accordingly. At the same time,
heat loading of the air conditioner increases due to larger
difference between indoor and outdoor temperature.
If a comfortable temperature cannot be achieved with
the air conditioner alone, it is recommended that you
use a supplementary heating device.
Lightning or a car wireless telephone operating neraby
may cause the unit to malfunction. Disconnect the unit
from its power source and then re-connect the unit
with the power source again. Push the ON/OFF button
on the remote controller to restart operations.
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.

Page 10 
2. Manual Operation and Maintenance
Operation mode selection
While two or more indoor units are simultaneously operating,
make sure the modes do not conflict with each other. The
heat modes claims precedence over all other modes. If the
unit initially started to operate in HEAT mode, the other
units can operate in HEAT mode only. For example: If the
unit initially started operates under COOL (or FAN) mode,
the other units can operate under any mode except HEAT. If
one of the unit selects HEAT mode, the other operating units
will stop operation and display "--" (for units with display
window only) or the auto and operation indication light will
flash rapidly, the defrost indication light will turn off, and
the timer indication light will remain on (for units without
a display window). Alternatively, the defrost and alarm
indication light (if applicable) will light up, or the operation
indication light will flash rapidly, and the timer indication
light will turn off (for the floor and standing type).
Maintenance
If you plan to leave the unit idle for a long time, perform the
following tasks:
1. Clean the indoor unit and air filter.
2. Select FAN ONLY mode and let the indoor fan run for a
time to try the inside of the unit.
3. Disconnect the power supply and remove the battery
from the remote control.
4. Check components of the outdoor unit periodically.
Contact a local dealer of a customer service centre if
the unit requires.
NOTE: Before you clean the air conditioner, be sure to
switch off the unit and disconnevy the power supply plug.
Optimal operation
To achieve optimal performance, please note the following:
• Adjust the direction of the air flow so that it is not
blowing directly on people.
• Adjust the temperature to achieve the highest possible
level of comfort. Do not adjust the unit to excessive
temperature levels.
• Close doors and windows in COOL mode or HEAT
mode.
• Use the TIMER ON button on the remote controller to
select time you want to start your air conditioner.
• Do not place any object near the air inlet or air outlet,
as the efficiency of the air conditioner may be reduced
and the air conditioner may stop running.
• Clean the air filter periodically, otherwise cooling or
heating performance may be reduced.
• Do not operate unit with horizontal louvre in closed
position.
SUGGESTION: For units that feature an electric heater,
when the outside ambient temperature is below 0ºC (32ºF),
it is strongly recommended that you to keep the machine
plugged in so as to guarantee smooth operation.
When the air conditioner is to be used
again
• Use a dry cloth to wipe off the dust accumulated on
the rear air intake grille in order to avoid the dust being
dispersed from the indoor unit.
• Check that the wiring is not broken off or disconnected.
• Check that the air filter is installed.
• Check if the air outlet or inlet is blocked after the air
conditioner has not been used for a long time.

Page 11 
3. Troubleshooting
CAUTION
If one of the following conditions occurs, switch off the power supply immediately and contact your dealer for further
assistance.
• 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.
Issue 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 may change 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 continue 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 outfoor
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.

Page 12 
Issue Possible Causes
Both the indoor unit and
outdoor unit make noises
A low hissing sound during operation: This is normal and is caused by refrigerant gas
flowing through both indoor and outdoor units.
A low hissing sound 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.
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 odour
The unit may absorb odours 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.

Page 13 
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
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 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 re-place
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 7ºC
(44.5ºF)
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 14 
5. European Disposal Guidelines
Users in European Countries may be required to properly dipose 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 take back the old appliance free of charge.
• Sell the appliance to certified scrap metal dealers.
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.

The design and specifications are subject to change without prior notice for product
improvement. Consult with the sales agency or manufacturer for details.
Any updates to the manual will be uploaded to the service website, please check for
the latest version.
QSYTD-002U
16122300000198
20180716