Kaysun KAM2-52 DR7 User manual

OWNER’S MANUAL
DC Multi Outdoor Type (R32 & R410A)
R32
KAM2-52 DR7
KAM3-78 DR7
KAM4-105 DR7
KAM5-120 DR7
R410A
KAM2-42 DN8
KAM2-52 DN7
KAM3-62 DN7
KAM3-78 DN7
KAM4-80 DN7
KAM4-105 DN7
KAM5-120 DN7
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.

Table of Contents
Owner’s Manual
Safety Pr ecautions ....................................................04
SAFETY
FIRST
Unit Parts and Major Functions ......................... 06
Manual Operation and Maintenance .............. 10

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Troubleshooting ................................. 11
a. Common Problems ................................. 11
b. Troubleshooting T ips ............................... 12
European Disposal Guidelines .............................................................. 13

Safety
Pr
ecautions
Safety Precautions 1
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:
W ARNING
Failure to observe a warning may result in serious injuries. The
appliance must be installed in acco
.
rdance with national regulations.
CAUTION
Failure to observe a caution may result in injury or equipment damage.
WARNING
• Ask an authorized dealer to install this air
conditioner. Inappropriate 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 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
prevent mechanical damage from occurring.
• 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 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
personnel shall be carried out under the
supervision of the person competent in the
use of flammable refrigerants.
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Safety
Pr
ecautions
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 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.
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Unit Parts
And Major
Functions
Unit Parts And Major Functions 2
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
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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

Unit
Parts
And Major
Functions
Floor and standing type(console) Compact four-way cassette type
Fig. 2.3
Indoor unit
Fig. 2.4
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
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 controller
Outdoor unit
8. refrigerant connecting pipe
9. Connective cable
10. Stop valve
11. Fan hood
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Unit
Parts
And Major
Functions
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
Indoor
Temperature
17-32°C
(62-90°F)
0-30°C
(32-86°F)
17-32°C
(62-90°F)
Outdoor
Temperature
0-50°C
(32-122°F)
-15-24°C
(5-76°F)
0-50°C
(32-122°F)
-15-50°C
(5-122°F)
(low temperature
cooling models)
Features
Protection of the air conditioner
Compressor protection
• The compressor cannot restart 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.
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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 is 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.

Unit
Parts
And Major
Functions
The air conditioner turns to FAN ONLY
mode from COOL or HEAT (for cooling and
heating models only) mode.
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 higher 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
nearby 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.
Closing curtains during heating also
helps keep the heat in
Doors and windows should be kept
closed
! Page 9 "

Manual Operations
And Maintenance
Manual Operations And Maintenance 3
Operation mode selection
While two or more indoor units are
simultaneously operating, make sure the modes
do not conflict with each other. The heat mode
claims precedence over all other modes. If the
unit intially 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) wil 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 dry 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 or a
customer service centre if the unit requires
servicing.
NOTE: Before you clean the air conditioner, be
sure to switch off the unit and disconnect 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
notblowing 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 a 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 per formance 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 0°C (32°F), 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.
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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 fr om
overloading. The unit cannot be restarted within three minutes of being
turned of f.
Cooling and Heating Models: If the Operation light and PRE-DEF (Pr e-heating/
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.
Troubleshooting
Troubleshooting 4
CAUTIONS
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.
Defrost) indicators are lit up, the outdoor temperature is too cold and the unit ’ s
! Page 11 "

Problem
Possible Causes
Solution
The unit
is not
working
Power failure
Wait for the power to be restored
The power switch is of f
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
fr equently
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 replac
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
Troubleshooting
Problem
Possible Causes
Dust is emitted fr om
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.
e
! Page 12 "

European Disposal
Guidelines
European Disposal Guidelines 5
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.
NOTE: Disposing of this appliance in the forest or other natural s urr oundings endangers your health
and is bad for the environment. Hazardous substances may leak into the ground water and enter
the food chain.
! Page 13 "

The design and specifications are subject to change without prior notice for product
improvement. Consult with the sales agency or manufacturer for details.
! Page 14 "

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