INVENTOR U5MRSL32(2)-18 User manual

AIR CONDITIONING SYSTEMS
MULTI SPLIT SYSTEM
MODELS:
U5MRSL32(2)-18
U5MRSL32(3)-27
U5MRSL32(4)-36
U5MRSL32(5)-42
ENGLISH | ΕΛΛΗΝΙΚΑ | ROMANA
• USER’S MANUAL
• ΕΓΧΕΙΡΙΔΙΟ ΧΡΗΣΗΣ
• MANUAL UTILIZATORULUI

Table of Contents
Owner’s Manual
Safety Precautions .................................................. 04
Indoor Unit Parts and Major Functions................ 06
Manual Operations................................................. 10
1
2
3
SAFETY
FIRST

Troubleshooting...............................................11
Common Problems .........................................11
Troubleshooting Tips ......................................13
European Disposal Guidelines.. .................... 14
4
5
Caution: Risk of re/
(for R32/R290 refrigerant only)
WARNING: Servicing shall only be performed as recommended by the equipment manu-
facturer. 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 ammable refriger-
ants. For more details ,please refer to the Information on servicing on INSTALLATION MAN-
UAL .(This is only required for the unit adopts R32/R290 Refrigerant)

◄ Page 4 ►
1
Safety Precautions
WARNING
CAUTION
Thank you for purchasing this air conditioner. This manual will provide you with informa-
tion 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:
Failure to observe a warning may result in death. The appliance
must be installed in accordance with national regulations.
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 re.
• The warranty will be voided if the unit is
not installed by professionals.
• If abnormal situation arises (like burning
smell), turn o the power supply and call
your dealer for instructions to avoid elec-
tric shock, re or injury.
• DO NOT let the indoor unit or the remote
control get wet. It may cause electric shock
or re.
• DO NOT insert ngers, 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 ammable spray such as
hair spray, lacquer or paint near the unit.
This may cause re or combustion.
• Do not use means to accelerate the de-
frosting process or to clean, other than
those recommended by the manufacturer.
• The appliance shall be stored so as to pre-
vent 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 obstruc-
tion.
• 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 specied for operation.
• Any person who is involved with working
on or breaking into a refrigerant circuit
should hold a current valid certicate from
an industry-accredited assessment author-
ity, which authorises their competence to
handle refrigerants safely in accordance
with an industry recognised assessment
specication.
• Servicing shall only be performed as
recommended by the equipment manu-
facturer. 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
ammable refrigerants.

◄ Page 5 ►
CAUTION
• DO NOT touch the air outlet while the
swing ap 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 in-
spection.
• 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 NOToperate the air conditioner with
wet hands. It may cause electric shock.
• DO NOT place items that might be
aected 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
deciency.
• 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.
• No children under the age of 8 should be
permitted to operate this electric device.
Be certain, that children, handicapped
people, or people with the lack of
knowledge and experience, must be
supervised, depending the situation, by
persons responsible for their well-being
and do not undertake procedures such
as the cleaning or the maintenance of this
device.
• It is important that adequate supervision
is provided and no minors are left
unattended with this device.

◄ Page 6 ►
2
Unit Parts And Major Functions
Unit Parts
Wall-mounted type Duct type
One-ve
One-ve
One-four
One-four
One-three
One-three
One-twin
One-twin
1
7
8
9
10
11
2
5
6
3
4
Fig. 2.1
Indoor unit
1. Panel frame
2. Rear air intake grille
3. Front panel
4. Air purifying lter & Air lter(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. Drain pump
(drain water from indoor unit)
2. Drain hose
3. Air outlet
4. Air inlet
5. Air lter
6. Electric control cabinet
7. Wire controller
Outdoor unit
8. Drain hose, refrigerant connecting pipe
9. Connective cable
10. Stop valve
11. Fan hood

◄ Page 7 ►
Console type Compact four-way cassette type
One-ve One-ve
One-four
One-four
One-three One-three
One-twin One-twin
Indoor unit
1. Airow louver (at air outlet)
2. Air inlet (containing air lter)
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
Indoor unit
1. Drain pump(drain water from
indoor unit) (optional)
2. Drain hose (optional)
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
Fig. 2.4Fig. 2.3

◄ Page 8 ►
Features
Operating Conditions
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 exchang-
er 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 re-
sulting in lower heating eciency in the air
conditioner.
• Under these conditions, the air conditioner
will stop heating operations and start de-
frosting automatically.
• The time to defrost may vary from 4 to 10
minutes, depending the outdoor tempera-
ture and the amount of frost buildup on the
outdoor unit.
Use the system under the following temperatures for safe and eective operation. If the air
conditioner is used under dierent conditions, it may malfunction or become less ecient.
Auto-Restart
In case of power failure, the system will im-
mediately stop. When power returns, the
Operation light on the indoor unit will ash. 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 dierence between air inlet and
air outlet on COOL mode in places with high
relative humidity.
• A white mist may be generated due to mois-
ture 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 refrig-
erant owing 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 tempera-
ture is changing.
• A noise may be heard due to the louver
restoring itself to its original position when
power is rst turned on.
NOTE: For multi-split type air conditioners, one outdoor unit can be matched to dierent
types of indoor units. All of the pictures in this manual are for demonstration purposes
only. Your air conditioner may be slightly dierent, if similar in shape. The following pages
introduce several kinds of indoor units that can be matched with the outdoor units.
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 (5-75°F) 0-50°C (32-122°F)
-15-50°C (5-122°F)
(For models with low-temp
cooling systems)
0-60°C (32-140°F)
(For special tropical models) -7-24°C (19-75°F) 0-60°C (32-140°F)

◄ Page 9 ►
Energy Saving Tips
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
rst use.
Smell emitting from the indoor unit.
This is caused by the indoor unit giving o
smells permeated from building materials,
furniture,or smoke.
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 (dened 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 tempera-
ture falls, heat drawn in by the air conditioner
decreases accordingly. At the same time, heat
loading of the air conditioner increases due to
larger dierence between indoor and outdoor
temperature. If a comfortable temperature
cannot be achieved with the air conditioner
alone, it is recommended that you use a sup-
plementary heating device.
Lightning or a car wireless telephone operat-
ing 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.
• 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 eciency 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 lter every two weeks. A dirty lter can reduce cooling or heating eciency.
• Adjust louvers properly and avoid direct airow.
Closing curtains during heating also
helps keep the heat in
Doors and windows should be kept
closed

◄ Page 10 ►
3
Manual Operations And Maintenance
Energy Saving Tips Optimal operation
When the air conditioner is to be used again:
Maintenance
While two or more indoor units are simulta-
neously operating, make sure the modes do
not conict 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 intially
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 diplay(for units with display
window only) or the auto and operation
indication light will ash rapidly, the defrost
indication light will turn o, and the timer in-
dication 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
ash rapidly, and the timer indication light
will turn o (for the oor and standing type).
To achieve optimal performance, please note
the following:
• Adjust the direction of the air ow so that it
is notblowing directly on people.
• Adjust the temperature to achieve the high-
est 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 eciency of the air condi-
tioner may be reduced and the air condition-
er may stop running.
• Clean the air lter 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 recommend-
ed that you to keep the machine plugged
in so as to guarantee smooth operation.
• Use a dry cloth to wipe o the dust accu-
mulated 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 o or
disconnected.
• Check that the air lter is installed.
• Check if the air outlet or inlet is blocked after
the air conditioner has not been used for a
long time.
If you plan to leave the unit idle for a long time,
perform the following tasks:
1. Clean the indoor unit and air lter.
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 o the unit and discon-
nect the power supply plug.