Omega OTEC IECS-D Series User manual

Air in
Air
outlet
Air inlet
With built-in air filter
to filter dust
Air deflector
(At the air outlet)
Connecting pipe
Water
discharge pipe
Drain pump (built-in)
For drainage of IDU
Air out
Air inlet (side)
Air inlet (back)
Air outlet
Air inlet (side)
Remote
controller
IDU
ODU
Wired controller is standard.
The air conditioner is delivered from the factory without connecting pipes.
All the figures in the manual explain only the general appearance and dimensions of the unit. The air conditioner you purchased may not
be completely consistent with the appearance and functions listed in the figures. Please refer to the actual product.
CAUTION
The air conditioner consists of the IDU, ODU, connecting pipe and wired/remote controller.

1
1. IMPORTANT SAFETY INFORMATION
If you install the unit incorrectly yourself, you risk water leaks,
electric shock, and fires.
To avoid electric shocks, fires, and injury, power the unit off
and contact your dealer if the unit becomes faulty.
Contact with water increases the risks of electric shocks or
fires.
The remote controller may be damaged.
Using wire or copper wire may cause the unit to break down
or cause a fire.
It may cause a fire.
Do not touch the fan with any object.
Ask a qualified service person to perform these tasks.
Contact your local government for details.
When the system is installed in a small room, keep the
refrigerant below the limit; otherwise, if there's a leak, the
oxygen in the room may be affected, causing a serious
accident.
If it does and comes into contact with fire, a harmful gas will
result.
Do not use the unit until a technician instructs you that it’s
safe to do so.
Do not use it for cooling precision instruments, food, plants,
animals, or art, or you may damage the unit.
Otherwise, an electric shock and injury may result.
To avoid electric shocks, ensure the unit is grounded and that
the earth wire is not connected to a gas or water pipe,
lightning conductor, or telephone earth wire.
WARNING
There are two types of safety precautions - please read both carefully.
CAUTION
Failure to observe a warning may result in serious injury or
death. The appliance must be installed in accordance with
national wiring regulations.
Failure to observe a caution may result in injury or damage
to the equipment.
CONTENTS PAGE
2
WARNING
CAUTION

2
In no circumstances can the grounding cable for main power
switch be disconnected.
Do not use a damaged power cable and replace it if it is
damaged.
When the air conditioner is used for the first time or when it is
powered off for a long time, it needs to be warmed up for at
least 12 hours before use.
CAUTION
Doing so puts you at risk of an electric shock.
These fins are sharp and you could cut you.
Condensation may form if the humidity is above 80 percent, if
the drain outlet is blocked or if the filter is polluted.
If the stand is damaged, the unit may fall and cause an injury.
Incomplete drainage may cause water leaks.
Do not remove the front panel. Some internal parts may cause
injury or be damaged.
Never expose children, plants or animals directly to the air
flow.
Falling or tumbling may result in injury.
Failure to observe could cause the chemicals to become
deposited in the unit, which could endanger the health of
those who are hypersensitive to chemicals.
It may cause incomplete combustion or deformation of the unit
due to the heat.
If the gas leaks out and stays around the air conditioner, a fire
may break out.
Wiring work must be done by authorized qualified
electricians.
All wiring works must comply with electrical safety
specifications.
It must be ensured that the air conditioner is well grounded,
that is, the main switch of the air conditioner must have a
reliable grounding cable.
It must be ensured that the minimum clearance between the
A separate power supply that meets the rated parameter
values must be provided for the air conditioner.
2. OPERATING INSTRUCTIONS
NOTE
The figures show in this manual are for reference only, and the
actual product may be different.
To ensure that the product continues to perform well, please operate
the air conditioner under the following temperature conditions.
Cooling
Heating
Dehumidific
ation
Room temperature
Outdoor temperature
Room temperature
Outdoor temperature
Room temperature
Outdoor temperature
10 to 55
Under 30
-15 to 24
10 to 55
Above 17
Above 12
1-phase 2572
90 indoor unit
105 indoor unit
105 outdoor unit
2
27
2
19.5
6
6
32
220-240V~50Hz
1-phase 220-240V~50Hz
1-phase 220-240V~50Hz
1-phase 220-240V~50Hz
Model
Maximum
operating
current
Power Supply
Voltage and
frequency
Recommended
circuit breaker
(A)
Phase
1-phase 1653 14.5 220-240V~50Hz
90 outdoor unit 22 251-phase 220-240V~50Hz
1-phase 32120 outdoor unit
140 indoor unit
160 indoor unit
160 outdoor unit
2
33
2
27
6
6
40
220-240V~50Hz
1-phase 220-240V~50Hz
1-phase 220-240V~50Hz
1-phase 220-240V~50Hz
1-phase 6120 indoor unit 2 220-240V~50Hz
140 outdoor unit 32 401-phase 220-240V~50Hz

Heating in horizontal outlet state will cause the room
temperature difference to increase.
During cooling, the horizontal outlet state is selected for the
guide louver.
Cooling in the downward outlet state will cause the air outlet
and guide louver surface to condensate.
As cold air sinks and hot air rises, adjust the direction of louver
respectively in cooling and heating modes to ensure good
cooling and heating effect.
If you press Swing when a panel with auto-swing guide louver is
used, the louver at the air outlet automatically swings, bringing
better cooling and heating effect.
3
The installation of the air conditioner must comply with the
requirements of the Installation Manual.
When the air conditioner is to be installed in or moved to
another place, it must be correctly installed by the
professional installation technicians according to the
Installation Manual and users cannot install the unit by
themselves.
Improper installation of the air conditioner may cause an
electric shock or fire.
CAUTION
Adjust the direction of the airflow appropriately to avoid creating
direct airflow to people in the room. In the cooling mode, in order
to cool the entire room, adjust the air guide to a horizontal
position; in the heating mode, in order to heat the lower part of
the room, adjust the air guide to a downward position.
Set the temperature appropriately to create a comfortable
environment. Do not set the temperature too high or too low.
In cooling mode, curtains or blinds should be used to prevent
direct sunlight from entering the room.
Close the windows. If the doors and windows are opened,
indoor and outdoor air will be circulated, which will lower the
cooling or heating effect.
Use the Timer button on the remote controller to set the
scheduled running time.
Do not block the airflow at the air inlet or the air outlet, as this
will reduce the efficiency of the air conditioner and even stop the
system.
The user must provide a qualified power source that is
consistent with the nameplate of the air conditioner and the
voltage must be within 90% to 110% of the rated voltage.
The power cable must be equipped with a protective device such
as a leakage protector or an air switch and its capacity must be
greater than 1.5 times the maximum current of the air
conditioner.
Use the dedicated line and the effective grounding socket that
matches the standard plug of the air conditioner. The plug of this
unit provides a grounding plug, which must not be changed.
Use the fuse or circuit breaker specified in the Installation
Manual.
Wiring must be completed by qualified electricians and must
meet electrical safety requirements.
It must be ensured that the air conditioner is well grounded, that
is, the main switch of the air conditioner must have a reliable
grounding cable.
The power cable must be replaced by professional technicians
authorized by the Clivet Air Conditioning Customer Service
Center or authorized service center.
Do not install the air conditioner near high-frequency machines
(such as commercial sewing machines or massage machines).
Otherwise, the air conditioner will fail. Do not install the air
conditioner in places with steam, smoke or corrosive gases.
Do not install the air conditioner in salty areas, such as the
seaside.
Do not install the air conditioner in places where oil is used in
large quantities.
Do not install the air conditioner in the following places.
Do not install the air conditioner in the following places.
Do not install the air conditioner 1m away from the TV, stereo
player or radio. The noise emitted from the air conditioner will
affect the operation of these appliances.
NOTE
Read this manual carefully before using this unit and strictly
follow the instructions; otherwise, you may damage the unit or
endanger your own or other people’s property.
CAUTION
CAUTION
If the air conditioner is used outside of the above conditions,
the safety protection function may be triggered and the air
conditioner may malfunction.
When the relative humidity is high, it is normal for
condensation or water blowing to occur on the surface of the
air conditioner. Please close doors and windows.
In the cooling mode, when the outdoor temperature is high, the
cooling effect will decrease.
In cooling mode, adjust the guide louver to be horizontal outlet.
In heating mode, adjust the guide louver to be downward outlet.

Install the unit securely; otherwise it will cause abnormal
noises and vibration due to poor installation. If necessary,
take measures to reinforce the unit's stability.
Install the unit at a place where the running noise and the
exhaust air do not affect neighbours.
If the air conditioner makes abnormal sounds during
operation, contact your local distributor.
If you are moving or wish to move the air conditioner, contact
your local distributor.
Check whether the grounding cable is broken and disconnected.
Turn on the power switch 12 hours before operation.
Check the following items before asking a professional to provide
maintenance or repair.
Check the following items before asking a professional to provide
maintenance or repair.
1. 3-minute protection
The ODU cannot operate for about 3 minutes after the ODU is
turned off and on again immediately when the power switch is turned
on, because the compressor cannot start within 3 minutes after
shutdown. This is the self-protection function of the machine.
1. The IDU emits white mist
2. Anti-cold breeze protection
The following situations may occur in heating mode (including
heating in automatic mode) to prevent the blowing of cold air: the
indoor heat exchanger does not reach a certain temperature, the
indoor fan temporarily stops running, or runs in Breeze mode. When
the indoor fan stops running, the anti-cold/air supply indicator is on.
CAUTION
In the Fan mode, the operating indicator is on, while the
anti-cold/air supply indicator
is off.
CAUTION
4
NOTE
For air conditioners with electric heaters, the electric heater is
secured between the wind turbine and the heat exchanger of
the IDUs using screws. The user is prohibited from
disassembling and repairing the part. Otherwise, a fire or other
dangers may occur.
The heating operation has just started.
The unit runs in defrosting mode.
The unit runs in heating mode when the outdoor ambient
temperature is very low.
3. When the protection device works, the operation stops, as follows:
4. Defrosting
When the outdoor temperature is low and the humidity is high, the
IDU’s heat exchanger may be frosted, which may reduce the heating
capacity of the air conditioner. In this case, the air conditioner will
stop heating, enter automatic defrosting mode, and return to heating
mode after defrosting has been completed.
When the starting conditions are not met and the unit is started
forcibly, the indicator is on.
The unit runs in the cooling mode.
The air inlet or outlet of the ODU is blocked; strong winds blow to
the air outlet of the ODU.
The unit runs in the heating mode.
The air inlet or outlet of the IDU is blocked.
During the defrosting, the outdoor fan stops running and the
indoor fan runs based on the anti-cold breeze protection
function.
The defrosting operation time varies depending on the outdoor
temperature and the degree of frosting. It generally takes 2 to 10
minutes.
During the defrosting process, the ODU may emit steam due to
the rapid defrosting, which is a normal phenomenon.
In an environment where the indoor relative humidity is too high,
when the IDU runs in the cooling mode, white mist may appear
due to the humidity and the temperature difference between the
air inlet and outlet.
When the air conditioner is switched to heating mode after the
defrosting operation, the IDU discharges the moisture generated
defrosting as steam.
2. The IDU blows dust
When the air conditioner has not been used for a long time or is
used for the first time, dust that has entered the IDU is blown
out.
3. The IDU emits odour
The IDU absorbs the odours of rooms, furniture or cigarettes and
others, and disperses the odours during operation.
4. When the indoor relative humidity is high, it is normal for
condensation or slight water blowing to occur on the surface of the
air conditioner.
5. The air conditioner makes small noise.
6. The unit is switched from Cool/Heat (unavailable on a cooling-only
unit) mode to the Fan mode.When the IDU reaches the set
temperature, the air conditioner controller automatically stops the
compressor operation and switches to the Fan mode only. When the
room temperature rises (in Cool mode) or falls (in Heat mode) to a
certain extent, the compressor is restarted, the cooling or heating
operation is resumed.
7. In Winter when the outdoor temperature is very low, the heating
effect may be affected.During the heating operation of the cooling
and heating type air conditioner, the air conditioner absorbs heat
from the outdoor air and releases it to heat the indoor air. This is the
heat pump heating principle of the air conditioner. When the heat
pump activates, the ODU blows out cold air and the outdoor
temperature drops. When the outdoor temperature is low, the
heating capacity is affected. It is recommended to use other heating
devices to enhance the heating effect.
When the air conditioner runs in the Auto, Cool, Dry, or Heat
mode, the unit can create a small and continuous hissing sound,
which is caused by the flow of refrigerant between the indoor unit
and the outdoor unit.
A hissing sound may be heard in a short time after the unit stops
operation or during the defrosting operation. The sound is
caused when the refrigerant stops flowing or the flow is changed.
When the air conditioner is in Cool mode (including the Cool
mode in automatic mode) or Dry mode, a small and continuous
rustling sound can be heard, which is caused by the running of
the drain pump.
When the air conditioner has just started running or stopped
running, you may hear a squeaky sound, which is caused due to
the natural expansion or contraction when the temperature of the
plastic parts changes.
Do not install the air conditioner in places with strong winds,
such as seaside, roof or high-rise buildings.
Do not install the air conditioner in places exposed to sulphur
gases as hot springs.
Do not install the air conditioner on a ship or mobile crane.

5
If one of the following circumstances takes place, shut down the air
conditioner immediately, cut off the power, and contact the local
customer service center of Clivet.
Error code
HF
E7
E9
E.9.
H0
E1
E2
E3
E4
E43
E44
E45
E5
E6
EE
EH
Eb
EF
PL
P1
P2
P3
P4
P5
PE
L0
L1
L2
L4
L5
L7
L8
L9
F1
P8
EP
Ed
Error or protection definition
IDU mismatching error
IDU EEPROM error
ODU EEPROM error
Wrong compressor model in EPROM
Communication error between main control board and IR341
Communication error between IDU and ODU
T1 sensor error
T2 sensor error
T2B sensor error
T3 sensor error
T4 sensor error
T5 sensor error
Voltage protection error
ODU DC fan error
Water level alarm error
TL sensor error
E6 error occurs six times in one hour, requiring power failure recovery
PFC feedback resistance failure
Heat sink TF high temperature protection
High pressure protection
Low pressure protection
Input current protection
Discharge temperature protection
Outdoor condenser T3 high temperature protection
Evaporator T2 high temperature protection
Module protection is triggered
DC bus low voltage protection
DC bus high voltage protection
MCE error
Zero speed protection
Phase loss
Protection when the previous and next speed change is > 15Hz
Protection for a difference of > 15Hz between the set speed and operating speed
Detected DC bus voltage (PN voltage) < 200 VDC for 5S after power-on
Typhoon protection
Ambient temperature less than or equal to 10°C in cooling mode
ODU error
H4
L (L0/L1) error occurs three times in one hour, reporting H4,
and this error is not recoverable.
After H4 error, spot check may be performed on the latest
three L errors (not limited to L0, L1). For example: report
L0-L4-L8-L9-L0-L1 within one hour, and report H4 error.
The errors for spot check are L9, L0, and L1.
90/105/120/140/160
Error code
E0
E1
E3
E5
E50
E51
E52
E53
E54
E55
E6
E60
E61
E7
E71
E72
E73
E74
EE
PA
PF
P0
P1
P10
P11
P12
P2
P4
P40
P41
P42
P43
P44
P45
P46
P47
P48
P49
P6
P8
P81
P82
P9
P90
P91
L0
L1
L2
L3
L5
L6
Error or protection definition
IDU EEPROM error
Indoor-outdoor communication fault
Indoor fan stall fault
ODU temperature sensor or EPROM fault
ODU temperature sensor fault
ODU EPROM fault
T3 sensor error
T4 sensor error
TP sensor error
Air return temperature sensor error
IDU temperature sensor fault
IDU room temperature T1 sensor error
IDU pipe temperature T2 sensor error
ODU DC fan stall fault
Outdoor fan over-current (external driving)
Outdoor fan stall
(external driving)
Ourdoor fan phase loss (external driving)
Outdoor fan zero speed (external driving)
Water level alarm error
High temperature protection of condenser
PFC module switch power-off
ODU IPM module protection
Voltage protection
Low voltage protection
High voltage protection
Outdoor DC-side voltage protection
Temperature protection for compressor top
ODU compressor feedback protection
Main control chip and driver chip communication fault
Compressor current sampling circuit fault
Compressor start-up fault
Compressor phase loss protection
Compressor zero speed protection
ODU electric control power down protection
Compressor stall protection
Compressor lock protection
Compressor out-synchronous protection
Compressor over-current protection
Compressor high discharge temperature protection
Outdoor electric control current protection
ODU current protection
Input AC current sampling circuit fault
Evaporator high or low temperature protection
Evaporator high temperature protection
Evaporator low temperature protection
Evaporator high and low temperature frequency limit
Condenser high temperature frequency limit
Compressor high discharge temperature frequency limit
Current frequency limit
Voltage frequency limit
PFC module fault frequency limit
53/71

6
If the problem remains, please contact the distributor or Clivet's air
conditioner customer service center, and provide info about the
product model and the fault details.
Do not replace the power cable by yourself to avoid danger.
Do not repair the air conditioner by yourself.
CAUTION
Fault Cause Solution
Starting
failure
Power failure
Power switch is off
The fuse of the power switch is blown.
The batteries of the remote
controller are exhausted.
The time set for the timed
power-on has not arrived.
Wait for the power supply
to be restored.
Turn on the power
Replace the burnt fuse.
Replace the batteries.
Wait or cancel the
setting.
The temperature setting is
inappropriate.
The air inlet or outlet of the
IDU or ODU is blocked
Doors and windows are open.
Remove the obstacles.
Close the doors and windows.
The air inlet or outlet of the
IDU or ODU is blocked.
Compressor 3-minute protection
The temperature setting
is inappropriate.
Remove the obstacles and
perform the operation again.
Wait.
Set the temperature
properly.
There is air
blowing, but
the cooling
effect is poor.
There is air
blowing, but
the unit
cannot supply
cold air.
Set the temperature properly.
Increase or decrease the
temperature. Read Operating
Methods for details.
1
5
3
7
2
4
6
No. Symptoms Check item Cause
The fan speed
cannot be
adjusted.
No remote
controller signal
is sent when
is pressed.
Check whether the
mode on the display
is Auto.
When Auto is selected, the
IDU will automatically select
Auto as the fan speed.
When Dry is selected, the IDU
will automatically select Auto
as the fan speed.
The fan speed can only be
selected in the Cool, Heat,
and Fan modes.
The remote controller cannot
send signals when the
batteries are exhausted.
Check whether the
mode on the display is
Dry.
The batteries of the
remote controller
are exhausted.
The
temperature
indicator is off.
In the Fan mode, the
temperature cannot be set.
Check whether the
mode on the display
is Fan.
Timed Off
disappears
after a while.
After the set time has arrived,
the air conditioner stops.
Check whether the
time set on the timer
has been reached.
Timed On
disappears after
a while.
When the time to start the
operation of the air conditioner
has arrived, the air conditioner
will automatically start running
and the corresponding display
will disappear.
Check whether the
time set on the timer
has been reached.
The air
conditioner
makes no
receiving sound
when is
pressed.
Point the signal transmitter of
the remote controller towards
the receiver of the IDU and
press . The controller
signal cannot be received
since the air conditioner is
off.
Check when is
pressed, whether the
signal transmitter of
the remote controller
is pointed to the
receiver of the IDU.
Check whether the
air conditioner’s
power switch is on.
The remote
controller does
not respond to
button pressing.
Button is locked.Check the display of
the remote
controller

7
14.5
7.2
33.5
4.4
R410A/1450g
1600
5300
840X840X230
795x555x287
54
3100
22.5
900
44/33/32
Model
Power supply
Cooling
IDU
ODU
Refrigerant
pipe
Gas side
Liquid side
Max. input current
Max. power input
Permitted pressure of cooling system
Refrigerant
Cooling capacity
Rated current
Rated power
W
A
W
M3/h
dB (A)
kg
mm
dB (A)
kg
mm
A
W
MPa
mm
mm
220-240V~50Hz
4.4
10
7200
2240
47
41/34/32
1000
19.5
4200
R410A/1600g
55
22.8
4.4
15.5
68
58
27
5760
R410A/3000g
3500
10500
45/41/36
28.7
1600
220-240V~50Hz 220-240V~50Hz
Circulating air flow
Noise
Net weight
External dimensions (WidthXHeightXDepth)
Noise
Net weight
External dimensions (WidthXHeightXDepth)
27
21.5
68
4.4
R410A/3000g
4850
12000
59
5760
28.7
1600
47/40/38
Model
Power supply
Cooling
IDU
ODU
Refrigerant
pipe
Gas side
Liquid side
Max. input current
Max. power input
Permitted pressure of cooling system
Refrigerant
Cooling capacity
Rated current
Rated power
W
A
W
M3/h
dB (A)
kg
mm
dB (A)
kg
mm
A
W
MPa
mm
mm
220-240V~50Hz
4.4
26.6
14000
6000
78.5
51/42/40
1720
32
6830
R410A/3200g
59
30.8
4.4
27.5
91
60
33
7120
R410A/3800g
6200
15500
51/42/40
30.8
1720
220-240V~50Hz 220-240V~50Hz
Circulating air flow
Noise
Net weight
External dimensions (WidthXHeightXDepth)
Noise
Net weight
External dimensions (WidthXHeightXDepth)
4.4
13.1
51
58
21.5
4600
R410A/2000g
3000
9000
47/40/38
23.3
1200
220-240V~50Hz
840X840X230 840X840X230 840X840X300
840X840X300 840X840X300 840X840X300
910x712x345 910x712x345 950x840x360
950x840x360 950x840x360 1040x865x410
7.8
1740
6000
Heating
Heating capacity
Rated current
Rated power
W
A
W
12.3
8200
2740
15.1
3400
11600
13.5
3000
9900
20
4500
13200
Heating
Heating capacity
Rated current
Rated power
W
A
W
21.3
15400
4800
22.2
5000
17200
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit

Select the "Fan" mode to allow the IDU to run for a period of
time and dry it.
Turn off the power supply and the circuit breaker, and take out
the battery in the remote controller.
The internal components of the ODU should be inspected and
cleaned regularly. Please contact Clivet local air conditioner
customer service center or a designated technical service
center.
Complete the following steps before the air conditioner is set aside
for a long time.
3. CLEANING AND MAINTENANCE
1. Open the air inlet grille.
3. Clean the air filter.
Use a dust collector or water to clean the air filter.
Press with both thumbs
at the same time.
For a four-way cassette unit, press the two grille locks with both
hands at the same time, and pull out the air inlet grille downwards.
2. Remove the air inlet grille (with air filter, see the figure below), open
the grille downwards to about 45°, and raise it upwards to remove it.
Wipe the air outlet and panel with a dry cloth.
If a stain is hard to remove, clean it with clean water or neutral
detergent.
Some metal edges and condenser fins are sharp and incorrect
handling can cause injury. Therefore, be careful when cleaning
these parts.
Check the air outlets and air inlets of the ODU regularly to see if
they are blocked by dirt or fumes.
When the filter is too dusty, clean it with a soft brush and neutral
detergent, and dry it in a cool, shady place.
4. Put the air filter back.
5. Perform the above mentioned steps 1 and 2 in reverse order to
install and close the air inlet grille, and connect the control box lead to
the corresponding electrical wire connector of the master unit.
For safety reasons, always turn off the air conditioner and turn
off the power before cleaning the air conditioner.
For air conditioners with auxiliary heaters, the auxiliary heater
is secured between the wind turbine and the heat exchanger
of the IDUs using screws and the minimum gap with the
flammable surface is 12 mm. The user is prohibited from
disassembling and repairing the part. Otherwise, a fire or
other dangers may occur.
WARNING
Disconnect the control box lead and electrical wire connector
of the master unit.
CAUTION
The air filter can filter dust and other particles in the air. A
blocked air filter can result in reduced performance of the air
conditioner. When the air conditioner is used often, remember
to clean the air filter regularly.
If the IDU is installed in dusty places, increase the frequency of
cleaning the air filter screen.
If the air filter is severely stained and difficult to wash, replace it
(optional accessory).
CAUTION
Do not use gasoline, benzene, volatile agents, decontamination
powder and liquid insecticides. Otherwise, the air outlet or panel
may de-color or deform.
Do not expose the inside of the IDU to moisture, as it may result
in electric shock or fire.
When cleaning the air guide with water, do not scrub it violently.
If the air conditioner is used without the air filter screen, dust will
be deposited in the air conditioner because it is not separated
from the indoor air, which will cause faults.
CAUTION
Check the air inlet and outlet of the ODU and IDU after long
periods of use to see if they are blocked; if an inlet/outlet is
blocked, clean it immediately.
CAUTION
Clean with a dust collector with the air inlet surface upward.
Clean with water with the air inlet surface downward.
Method of cleaning the air outlet and panel
Maintenance
ODU
8