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INDOOR UNITS SDV5
COMMERCIAL AIR CONDITIONERS SDV5
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Original instructions
IMPORTANT NOTE:
Read this manual carefully before installing or operating
your new air conditioning unit. Make sure to save this
manual for future reference.
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1. IMPORTANT SAFETY INFORMATION
WARNING
CAUTION
CONTENTS PAGE
IMPORTANT SAFETY INFORMATION..........................................................1
PART NAMES.................................................................................................3
AIR CONDITIONER OPERATIONS AND PERFORMANCE..........................5
ADJUSTING AIR FLOW DIRECTION.............................................................6
MAINTENANCE...............................................................................................9
SYMPTOMS THAT ARE NOT FAULTS.........................................................12
TROUBLESHOOTING...................................................................................12
WARNING
1.1 Types of precautions
To gain full advantage of the unit’s functions and to avoid malfunctions due to mishandling, we recommend that you read this instruction manual carefully before use.
The precautions described herein are classified as WARNING and
CAUTION. They both contain important information regarding
safety. Ensure that you follow them carefully.
Failure to follow these instructions may result in injury,
even loss of life.
1.2 General precautions
Failure to observe these instructions may result in
serious property damage or injury.
Do not use this unit in locations where flammable gas may
exist. If flammable gas comes into contact with the unit, a
fire may occur, which could result in serious injury or death.
If this unit exhibits any abnormal behavior (such as emitting
smoke) there is a danger of serious injury. Disconnect the
power supply and contact your supplier or service engineer
immediately.
The refrigerant in this unit is safe and should not leak if the
system is designed and installed properly. However, if a
large amount of refrigerant leaks into a room, the oxygen
concentration will decrease rapidly, which can cause
serious injury or death. The refrigerant used in this unit is
heavier than air, so the danger is greater in basements or
other underground spaces. In the event of a refrigerant leak,
turn off any devices that produce a naked flame and any
heating devices, ventilate the room, and contact your
supplier or service engineer immediately.
If this unit is used in the same room as a cooker, stove, hob,
or burner, ventilation for sufficient fresh air must be
ensured, otherwise the oxygen concentration will fall, which
may cause injury.
Do not attempt to inspect or repair this unit yourself. This
unit should only be serviced and maintained by a
professional air conditioning service engineer. Incorrect
servicing or maintenance can cause electric shocks, fire or
water leaks.
This unit should only be re-positioned or re-installed by a
professional technician. Incorrect installation can lead to
electric shocks, fire or water leaks. The installation and
grounding of electrical appliances should only be carried
out by licensed professionals. Ask your supplier or
installation engineer for further information.
Do not allow this unit or its remote controller to come into
contact with water, as this can lead to electric shocks or fire.
Do not use paint, varnish, hair spray, other flammable
sprays or other liquids that may give off flammable
fumes/vapor near this unit, as doing so can cause fires.
When replacing a fuse, ensure that the new fuse to be
installed completely complies with requirements.
Do not touch the unit or its remote controller with wet
hands, as doing so can lead to electric shocks.
Do not insert your fingers or other objects into the unit’s air
inlet or air outlet to avoid injury or damage to the equipment.
Do not place vases or other liquid containers on the unit or
in places where liquid could drip onto it. Water or other
liquids that come into contact with the unit can lead to
electric shocks or fires.
Toxic fumes may be produced if the refrigerant in this unit
comes into contact with naked flames (such as from a
heater, gas stove/burners, or electric appliances).
Dispose of this unit’s packaging carefully, so children
cannot play with it. Packaging, especially plastic packaging,
can be dangerous, can cause serious injury or death.
Screws, staples and other metal packaging components
can be sharp and should be disposed of carefully to avoid
injury.
Do not open or remove the unit's panel when the unit is
powered on. Touching the unit's internal components while
the unit is powered on can lead to electric shocks or injuries
caused by moving parts such as the unit's fan.
Do not remove the remote controller’s front or back
overs and do not touch the remote controller’s internal
components, as doing so can cause injury. If the remote
controller stops working, contact your supplier or service
engineer.
Do not spray any liquids onto the unit or allow any
liquids to drip onto the unit.
Do not allow children to play near this unit, as doing so
risks injury.
Ensure that the power supply is disconnected before any
servicing or maintenance is carried out.
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Ensure that the unit is properly grounded, otherwise electric
shocks or a fire may result. Electrical surges (such as those
that can be caused by lightning) can damage electrical
equipment. Ensure that suitable surge protectors and
circuit breakers are properly installed, otherwise electric
shocks or a fire may result.
Dispose of this unit properly and in accordance with regulations. If electrical appliances are disposed of in landfills or
dumps, hazardous substances can leak into the groundwater and thus enter the food chain.
Do not place appliances that produce naked flames in the
path of the airflow from the unit. The airflow from the unit
may increase the rate of combustion, which may cause a
fire and cause serious injury or death. Alternatively, the
airflow may cause incomplete combustion which can lead
to reduced oxygen concentration in the room, which can
cause serious injury or death.
Only use the air conditioner for its intended purpose. This
unit should not be used to provide refrigeration or cooling
for food, plants, animals, machinery, equipment or art.
To avoid electric shocks and fires, install an earth leakage
detector.
Ensure that the drain pipe functions properly. If the drain
pipe is blocked by dirt or dust, water leaks may occur when
the unit is running in cooling mode. If this happens, turn the
unit off and contact your supplier or service engineer.
CAUTION
Do not dispose of this product as unsorted
waste. It must be separately collected
and processed. Ensure that all
applicable legislation regarding the
disposal of refrigerant, oil and other
materials is adhered to. Contact your
local waste disposal authority for
information about disposal procedures.
To avoid damaging the remote controller, exercise caution
when using it and replacing its batteries. Do not place objects
on top of it.
Do not use strong chemical cleaners to clean the unit, as doing
so can damage the unit’s display or other surfaces. If the unit
is dirty or dusty, use a slightly damp cloth with very diluted and
mild detergent to wipe the unit. Then, dry it with a dry cloth.
d. Where high voltage electricity is present, such as certain
industrial locations.
f. Where exposure to oily or very humid air may occur such as
kitchens.
g. In proximity to sources of electromagnetic radiation such as
high-frequency transmitters or other high-strength radiation
devices.
Ensure that the drain pipe functions properly. If the drain pipe
becomes blocked by dirt or dust, water leaks may occur when
the unit is running in cooling mode. If this happens, turn the
unit off and contact your supplier or service engineer.
Do not use the unit until the qualified technician instructs
you that it is safe to do so.
The fins on the unit’s heat exchanger are sharp and can
cause injury if touched. To prevent injury, when the unit is
being serviced, gloves should be worn or the heat exchanger should be covered.
Ensure that children, plants and animals are not directly
exposed to the airflow from the unit.
When fumigating a room with insecticide or other
chemicals, cover the unit well and do not run it. Failure to
observe this caution could lead to chemicals getting
deposited inside the unit and later emitted from the unit
when it running, endangering the health of any room
occupants.
To avoid excessive noise or vibration, the unit should be
installed in a position that can bear the unit’s weight and
prevent excessive noise and vibration when the unit is
running. If excessive noise or vibration is experienced when
the unit is running, contact your supplier or service engineer.
The appliance is not to be used by persons (including children)
with reduced physical, sensory or mental capabilities, or lack
of experience and knowledge, unless they have been given
supervision or instruction.
Children being supervised not to play with the appliance.
(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.)
Turn off the unit before cleaning it to avoid electric
shocks. Otherwise, an electric shock and injury may
result.
Do not place items which might be damaged by moisture
under the unit. When the humidity is greater than 80% or if
the drain pipe is blocked or the air filter is dirty, water
could drip from the unit and damage objects placed
under the unit.
Do not touch the internal parts of the controller. Do not
remove the front panel. Some internal parts may cause
injury or be damaged.
Do not place appliances that have naked flames under or
near the unit, as heat from the appliance can damage the
unit.
Do not place the unit’s remote controller in direct sunlight.
Direct sunlight can damage the remote controller’s display.
Only use this unit in well-ventilated spaces and ensure that
there are no obstructions that could impede the airflow into
and out of the unit. Do not use this unit in the following
locations:
b. Locations with saline atmospheres, s
uch as seaside
locations.
c. Locations with sulphurous atmospheres, such as near
industrial locations.
h. Where exposure to corrosive or harmful gases, such as
acidic or alkaline gases, may occur.
e. On vehicles or vessels, such as trucks or ferry boats.
a. Places with vapor from mineral oil or cutting oil.
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2. PART NAMES
■ Four-way cassette type
Air Outlet Louver (adjustable)
Lock buckle
(for closing the Air Grille)
Air Intake
Air Filter
Grounding Screw
(in the control box)
for in-situ adjustment to three-direction or two-direction,
please contact the local dealer .
■ Ceiling-floor type(36-71kW)
Horizontal Air Outlet Louver
Air Intake
Air Filter(inside)
■ One-way cassette type(18-36kW)
Fig.2-1
Fig.2-2
Air Intake
Air Filter
Grille Bolt-lock
Air Outlet Louver
Display Panel
Fig.2-5
Fig.2-3
■ Ceiling-floor type(80-90kW)
The figure shown above is for reference only and may
be slightly diffferent from the actual product.
Horizontal Air Outlet Louver
Air Filter(inside)
Air Intake
Fig.2-4
■ Ceiling-floor type(112-140kW)
Horizontal Air Outlet Louver
Air Filter(inside)
Air Intake
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■
Wall-mounted type
■
High static pressure duct type
Fig.2-7
Fig.2-8
■ Console type
Air Outlet Louver
Air intake
Installation part
Display Panel
Drain pipe
Air Outlet Louver
Fig.2-10
Fig.2-9
Air Outlet
Air Intake
Heat Exchanger
Electric Control Box
■ Medium static pressure duct type
Fig.2-6
Cable Inlet
Electric Control Box
Air Intake
Water Plug (for maintenance)
Air Outlet
Horzontal Air Outlet Louver
Air Outlet
Air Filter(inside)
Air Intake
■ One-way cassette type(45-71kW)
Air Outlet
Air Intake
Electric Control Box
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3. AIR CONDITIONER OPERATIONS AND
PERFORMANCE
Cooling mode
Mode
Temperature
Indoor temperature
NOTE
Table 3-1
17°C ~ 32°C
≤27°C
The operating temperature range under which the unit runs stably
are given in Table 3-1.
Heating mode
(If it exists)
If the indoor humidity is above 80%,
condensation may form on the surface
of the unit.
Heating mode is only available when the unit is connected
to a system that can provide heating.
To ensure the desired temperature is achieved
efficiently, ensure that:
The unit performs stably in the temperature range given in
Table 3-1. If the indoor temperature is outside the unit's
normal operating range, it may stop running and display an
error code.
- All windows and door are closed.
- The airflow direction is adjusted to work in running mode.
- The air filter is clean.
Please note how you can best save energy and achieve the
best cooling/heating effect.
●
Regularly clean air filters inside indoor units.
check
regularly
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● When heating
adjust the louver downward
■ Adjust the air direction up and down
● Auto-swing
■ One-way cassette type
Press SWING for the louver to swing up and down.
Maximize air
circulation area
Fig.4-3
4. ADJUSTING AIR FLOW DIRECTION
NOTE
● When cooling
adjust the louver horizontally
■ Four-way cassette type
Fig.4-1
Fig.4-2
● Maintain a proper air distribution.
Air outlet louvers should be used to adjust the direction of outlet
airflow, as doing so might ensure more efficient operation.
● Avoid too much outdoor air coming into air-conditioned
spaces.
Close doors and windows.
● Note that outlet air is cooler or heater than set room
temperature.
Avoid direct exposure to outlet air as it may be too cool or hot.
This applies especially to children, the elderly, and people with
disabilities.
Do not set
the temperature
too low
Since warmer air rises and cooler air falls, the distribution of warmed/cooled air around a room can be
improved by positioning the unit's louvers. The louver
angle can be adjusted by pressing the [SWING] button
on the remote controller.
During heating operation, horizontal airflow will aggravates
the uneven distribution of room temperature.
The louver direction:
Horizontal airflow is recommended during cooling operation.
Note the downward air flow will cause condensation on the air
outlet and louver surface.
■ Adjust the air direction up and down
● Auto-swing
Press SWING for the louver to swing up and down.
● Manual swing
Adjust the louver to improve the cooling or heating effect.
● Manual swing
Adjust the louver to improve the cooling or heating effect.
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● When heating
● When cooling
adjust the louver horizontally
adjust the louver downward
● When heating
● Auto-swing
Adjust the louver downward (vertically).
● Manual swing
Press SWING and the louver will swing up and down
automatically.
Adjust the louver to improve the cooling or heating effect.
● When cooling
Adjust the louver horizontally.
CAUTION
■ Ceiling-floor type
● Auto-swing
Press SWING and the louver will swing up and down (left
and right) automatically.
● Manual swing
Adjust the louver to improve the cooling or heating effect.
● When cooling
Adjust the louver horizontally.
● When heating
Adjust the louver downward (vertically).
Fig.4-4
Fig.4-5
Fig.4-6
Fig.4-7
Fig.4-8
Fig.4-9
Fig.4-10
Fig.4-11
■ Wall-Mounted type
■ Console type
● Auto-swing
Press SWING and the louver will swing up and down
automatically.
● Manual swing
Press Air Direction to fix the louver at the desired angle.
The louver swing will move up or down with each press.
Fig.4-12
■ Adjust the air direction up and down
Water may drip from the unit if the direction of outlet air is
adjusted downward during cooling operation.
The uneven distribution of indoor temperature will be aggravated if the direction of outlet air is horizontal during heating
operation.
Do not move the horizontal louver with your hand,as doing
so may cause a malfunction. The position of the horizontal
louver should be adjusted by the SWING button on the wired
controller.
■ Adjust the air direction up and down
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● When heating
Adjust the louver downward (vertically). (Refer to Fig.4-14)
●
When cooling
Adjust the louver horizontally. (Refer to Fig.4-13)
Fig.4-13
Fig.4-14
Do not try to adjust the louver by hand, as doing so may
cause a malfunction.
CAUTION
■
Adjust the air direction left and right
Fig.4-15
Before opening the front panel, cut off power supply and
turn the breaker to OFF.
Do not touch the metal parts inside the indoor unit to avoid
injury.
Open the front panel.
(How to open the front panel: refer to Fig.5-6).
CAUTION
■ Air flow selection
Table 4-1
Select the air flow as desired.
When setting the air flow selection switch to ,
the air conditioner automatically decides the appropriate
blowing pattern depending on the operating mode/
scenario.
In all modes, air is expelled from the upper air outlet.
Use this switch if you do not want air coming out of the
lower air outlet (when sleeping).
Operating
mode
Situation
Blowing
pattern
cooling mode heating mode
When the room
is cool or after
running the air
conditioner for
one hour.
Air is blown via
the upper air
outlet to equalize
the room
temperature, so
the air doesn’t
directly blow
onto people.
At the start
of the
operation
or at other
times when
the room is
not fully cooled.
At times other than those
below. (Normal time.)
Air is blown from the
upper and lower air
outlets for
high-speed cooling
in cooling mode and
for warming the air
in heating mode.
At the start or
when air
temperature is
low.
Air is blown via
the upper air
outlet, so it
doesn’t directly
blow onto
people.
When setting the air outlet selection switch to .
To switch between Auto and Manual mode on the lower air
outlet, turn off the unit and restart it to reset the modes.
CAUTION
To change the air direction to the left or right, adjust the left and
right louvers to appropriate positions.
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■
Method for cleaning the air filter
5. MAINTENANCE
Before you clean the air conditioner, ensure it is powered
off.
Check that the wiring is undamaged and connected.
Use a dry cloth to wipe the indoor unit and remote
controller.
A wet cloth may be used to clean the indoor unit if it is very
dirty.
Never use a damp cloth on the remote controller.
Do not use a chemically treated duster on the unit or leave
this type of material on the unit to avoid damaging the finish.
Do not use benzene, thinner, polishing powder, or similar
solvents for cleaning.
These may cause the plastic surface to crack or warp.
CAUTION
CAUTION
1. Take out the air intake grille
● For Four- Way Cassette Type
Push the grille switches simultaneously, as indicated in Fig.5-1.
Then pull down the air intake grille (together with the air filter, as
shown in Fig.5-2). Pull the air intake grille down to 45°, and lift it
up to remove the grille.
Fig.5-2
The control box cables originally connected to the
electrical terminals on the main body must be removed, as
indicated above.
Fig.5-1
● The air filter can prevent the dust or other particles from entering
the unit. If the filter is blocked, the unit will not work well. Clean
the filter every two weeks when you use it regularly.
●
If the air conditioner is positioned in a dusty place, clean the filter
often.
●
Replace the filter if it is too dusty to clean (the replaceable air
filter is an optional fitting).
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●
For One-Way Cassette Type
Remove the air intake grille, hold the air intake buckle with two hands
and open the grille downwards, pull it to the inside, and push the filter
buckle to remove the grille.
Air filter
Fig.5-3
Air Outlet
Selection Switch
Special function filter
●
For Console Type
Push the grille switches in the directions of the arrows. Then, open
the air intake grille downwards. Press the claws on the right and left
of the air filter down slightly, then pull them upwards.
Fig.5-6
Hold the tabs of the frame, and remove the claws in the four
places. (The special function filter can be maintained by washing
it with water once every six months. We recommend replacing it
once every three years.)
Fig.5-7
Fig.5-8
Fig.5-4
Fig.5-5
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Do not dry out the air filter under direct sunshine or with
fire.
For one-way cassette type, the air filter should be installed
before the unit body.
2. Dismantle the air filter.
3. Clean the air filter
4. Re-install the air filter.
5. Install and close the air inlet grille by reversing steps 1 and
2, and connect the control box cables to the corresponding
terminals in the main body.
CAUTION
Dusts will accumulate on the filter along with the unit
operation, and need to be removed from the filter,or the unit
would not function effectively.
Clean the filter every two weeks when you use the unit
regularly.
Clean the air filter with a vacuum cleaner or water.
a. The air intake side should face up when using a vacuum
cleaner.
(Refer to Fig.5-15)
b. The air intake side should face down when using clean water.
(Refer to Fig.5-16)
For excessive dusts, use a soft brush and natural detergent to
clean it and dry in a cool place.
Fig.5-15
Fig.5-16
NOTE
Maintenance before stopping using the
unit for a long time
(e.g., at the end of a season)
Let the indoor units run in fan only mode for about half a day
to dry the interior of the unit.
Clean the air filter and indoor unit casing.
Refer to “Cleaning the air filter" for details. Install cleaned air
filters back in their original positions.
Turn off the unit with the ON/OFF button on the remote controller, and then unplug it.
When the power switch is connected, some energy will be
consumed even if the unit is not running. Disconnect the
power to save energy.
A degree of dirt will accumulate when the unit has been
used several times, which will require cleaning.
Take out of the batteries from the remote controller.
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6. SYMPTOMS THAT ARE NOT FAULTS
Symptom 1: The unit will not run
Symptom: When the ON/OFF button on the remote controller is
pressed, the unit does not immediately start running.
Heating mode is running when the following panel lights are on:
operation and the "DEF./FAN LED indicator (cooling and
heating type) or the fan only indicator (cooling only type)".
When it starts but the compressor does not, the indoor unit
activates protective measures because of the outlet
temperature.
Maintenance after a long period of non-use
Symptom 2: The unit emits white mist
Check for and remove anything that might be blocking the inlet
and outlet vents of the indoor units and outdoor units.
Clean the unit casing and clean the filter. Refer to [Cleaning
the filter] and "Cleaning the filter" for instructions. Re-install
the filter before running the unit.
Turn on the power at least 12 hours before you want to use the
unit to ensure it works properly. As soon as the power is
turned on, the remote control display appears.
The following symptoms may be experienced during the normal
operation of the unit and are not considered faults. Note: If you
are not sure whether a fault has occurred, contact your supplier
or service engineer immediately.
Cause: To protect certain system components, system start-up
or re-start is intentionally delayed for up to 12 minutes under
some operating conditions. If the OPERATION LED on the unit's
panel is lighting, the system is working normally and the unit will
start after the intentional delay is complete.
White mist is generated and emitted when the unit starts to
operate in a very humid environment. This phenomenon will
stop once the humidity in the room is reduced to normal levels.
The unit occasionally emits white mist when it runs in heating
mode. This occurs when the system finishes periodic defrosting.
Moisture that may accumulate on the unit's heat exchanger coil
during defrosting becomes mist and is emitted from the unit.
Symptom 3: The unit emits sounds
A continuous sound (other than that made by the unit's fan) is
heard when the unit is running in cooling mode. This is caused
by the unit's drain pump (on units that have a drain pump).
A squeaking sound is heard when the unit stops after running in
heating mode. This is caused by plastic components cooling
down and contracting.
Symptom 4: Dust is emitted from the unit
Symptom 5: The unit gives off a strange odor
This can occur when the unit first runs after a long idle period.
.
7. TROUBLESHOOTING
7.1 General
A slight hissing sound is heard when the unit is running. This is
the sound of refrigerant flowing through the unit and through the
piping that connects the unit to the rest of the system. This sound
is more noticeable when the unit starts/stops running and the
flow of refrigerant begins/ceases.
If smells such as those of strong-smelling food or tobacco smoke
are present in the room, they can enter the unit, leave trace
deposits on the unit's internal components, and later be emitted
from the unit.
Sections 7.2 and 7.3 describe some initial troubleshooting steps
that can be taken when an error occurs. If these steps do not
resolve the issue, arrange for a professional technician to investigate the problem. Do not attempt further investigations or troubleshooting yourself.
If any of the following errors occur, power the unit off, contact a
professional technician immediately and do not attempt troubleshooting yourself:
- A safety device such as a fuse or circuit breaker frequently
blows/trips.
- An object or water enters the unit.
- Water is leaking from the unit.
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Do not attempt to inspect or repair this unit yourself. Arrange for a qualified technician to carry out all servicing and
maintenance.
WARNING
7.2 Unit troubleshooting
Troubleshooting steps
- Close the doors and windows.
- Close shutters/blinds to shield the unit
from direct sunlight.
- Turn off some of the computers during
the hottest part of the day.
- Clean the filter.
Symptom
Possible causes
The unit does not start
Air flows normally but
doesn’t cool
The unit starts or stops
frequently
Low cooling effect
Low heating effect
- The unit is powered off.
- The power switch fuse may have
burned out.
- The remote controller’s batteries are
dead.
- The temperature setting is not correct.
- Doors or windows are open.
- Sunlight is shining directly onto the
unit.
- The room contains many heat sources
such as computers or refrigerators.
- The unit's air filter is dirty.
- The outside temperature is unusually
high.
- Wait for the power to come back on.
- Replace the fuse.
- Replace the batteries.
- Set the desired temperature on the
remote controller.
- Close doors and windows.
- Doors or windows are not completely
closed.
Table 7-1
Arrange for a professional technician to check the following:
- Too much or too little refrigerant.
- No gas in the refrigerant circuit.
- The outdoor unit compressors have malfunctioned.
- The power supply voltage is too high or too low.
- There is a blockage in the piping system.
Engage a professional air conditioning engineer to check the following:
- The unit's heat exchanger is dirty.
- The unit's air inlet or outlet is blocked.
- A refrigerant leak has occurred.
Arrange for a professional technician to check the following:
- A refrigerant leak has occurred.
- Power on the unit. This indoor unit
forms part of an air conditioning system
that has multiple indoor units that are all
connected. The indoor units cannot be
powered on individually - they are all
connected to one, single power switch.
Ask a professional technician for advice
regarding how to safely power on the
units.
- The cooling capacity of the system
reduces as the outdoor temperature
rises and the system may not provide
sufficient cooling if the local climate
conditions are not considered when the
system's outdoor units were selected.
- A power cut has occurred (the power to
the premises has been cut-off).
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7.3 Remote controller troubleshooting
WARNING
- A safety device such as a fuse or circuit breaker frequently blows/trips.
- An object or water enters the unit.
- Water is leaking from the unit.
Certain troubleshooting steps that a professional technician may perform when investigating an error are described
in this owner's manual for reference only. Do not attempt to undertake these steps yourself – arrange for a professional
technician to investigate the problem.
If any of the following errors occur, power the unit off and contact a professional technician immediately. Do not attempt
troubleshooting yourself:
Table 7-2
Symptom
Possible causes
The fan speed cannot be
adjusted
The remote controller signal
is not transmitted even when
the ON/OFF button is pushed
No receiving sound
from the indoor unit when
the ON/OFF button is pressed
The indication on the display
disappears after a certain time
The TIMER ON indicator goes
off after a certain time
Troubleshooting steps
- A power cut has occurred (the power
to the premises has been cut-off).
- The remote controller's batteries are
dead.
- Wait for the power to come back on.
- Replace the batteries.
-
When dry mode is selected, the
air conditioner automatically adjusts
the fan speed. (The fan speed can be
selected during "COOL", "FAN ONLY",
and "HEAT".)
-
In automatic mode, the air conditioner
will automatically change the fan’s
speed.
-
Check whether the MODE
indicated on the display is "AUTO".
-
Check whether the MODE
indicated on the display is "DRY".
- Check whether the signal transmitter
of the remote controller is properly
directed to the infrared signal receiver
of the indoor unit when the ON/OFF
button is pressed.
- Directly transmit the signal transmitter
of the remote controller to the infrared
signal receiver of the indoor unit, and
then press the ON/OFF button twice.
- Up to the set time, the air
conditioner will automatically start
and the appropriate indicator will go
off.
- The air conditioner operation will stop
up to the set time.
- Check whether the timer operation
has come to an end when TIMER OFF
is indicated on the display.
- Check whether the timer operation
has come to an end when TIMER ON
is indicated on the display.
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15
7.4 Error codes
With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in
Table 7-3 are displayed on the unit's display panel. If the mode conflict error is displayed and persists, contact your
supplier or service engineer. These errors should only be investigated by a professional technician. The descriptions are
provided in this owner's manual for reference only.
Notes:
NO.
1
2
3
4
5
6
7
8
9
10
Display output
Four LED display Digital display
Mode conflict
Communication error between
indoor and outdoor units
Indoor ambient temperature
sensor error
Indoor heat exchanger mid-point
temperature sensor error
Indoor heat exchanger outlet
temperature sensor error
Fan error
EEPROM mismatch
Outdoor unit error
Water level error
The indoor unit has not been
assigned an address
Content
DEF./FAN LED
flashes rapidly
TIMER LED flashes
rapidly
OPERATION LED
flashes rapidly
ALARM LED flashes
slowly
OPERATION LED
flashes rapidly
OPERATION LED
flashes rapidly
TIMER LED flashes
rapidly
DEF./FAN LED
flashes rapidly
ALARM LED flashes
slowly
OPERATION LED
flashes rapidly
E0
FE
EE
Ed
E7
E6
E4
E3
E2
E1
Table.7-3
Error Code Table
Possible causes
Communicaon wires between
indoor and outdoor units not
connected properly.
Interference from high voltage
wires or other sources of
electromagnec radiaon.
Communicaon wire too long.
Damaged main PCB.
The indoor unit’s operang mode
conflicts with that of the outdoor
units.
Temperature sensor not
connected properly or has
malfunconed.
Damaged main PCB.
Fan stuck or blocked.
Fan motor not connected properly
or has malfunconed.
Power supply abnormal.
Damaged main PCB.
Damaged main PCB.
Outdoor unit error.
Water level float stuck.
Water level switch not connected
properly.
Damaged main PCB.
Drain pump has malfunconed.
Indoor unit has not been assigned
an address.
EEV error
/
Eb
Line loosened or broken.
The electronic expansion valve
in stuck.
Damaged main PCB.
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