CMCS 12HI CMCS 18HI
User Manual
- 2 -
Table of Contents
1. GENERAL INFORMATION .................................................................................................. 3
2. SAFETY PRECAUTIONS ..................................................................................................... 6
3. OUTLINE OF INDOOR & OUTDOOR UNITS .....................................................................11
4. LED INDICATORS ON INDOOR UNIT .............................................................................. 12
5. ADJUSTING THE AIRFLOW DIRECTION ......................................................................... 13
6. EMERGENCY OPERATION & TEST SWITCH .................................................................. 14
7. ORDINARY MAINTENANCE AND ADVICE FOR USE ...................................................... 15
8. TROUBLESHOOTING ....................................................................................................... 20
9. AUTOMATIC RESTART AFTER A POWER FAILURE ....................................................... 24
WARNING!
thank you for purchasing our product.
BEforE using your nEW air conditionEr, plEasE rEad this manual and kEEp it for
futurE rEfErEncE.
- 3 -
1. GENERAL INFORMATION
Outline of specic features
ECO-FRIENDLY REFRIGERANT R410A
As R410A refrigerant contains no chlorine, it does not damage ozone.
POWER CONTROL THROUGH "DC INVERTER"
Power is suppplied according to real needs of comfort, thus permitting a sure energy saving.
INFRARED REMOTE CONTROLLER
All available functions of the air conditioner can be set by using the infrared remote controller,
whose LCD panel immediately shows the operating parameters.
ON TIMER / OFF TIMER
ON Timer, allows to program the air conditioner's start within 24 hours. If the set time does not
exceed 10 hours, the TIMER ON is set by 0.5 hours' steps. If the set time exceeds 10 hours,
the TIMER ON is set by 1 hour's steps.
OFF Timer, allows to program the air conditioner's stop within 24 hours. If the set time does not
exceed 10 hours, the TIMER OFF is set by 0.5 hours' steps. If the set time exceeds 10 hours,
the TIMER OFF is set by 1 hour's steps.
The air conditioner's start and/or stop may also be programmed in sequence, within 24 hours.
DRY FUNCTION
When "DRY" function is selected, the air conditioner strongly reduces humidity inside the room,
and also keeps the room temperature at a constant value.
ADVANCED CONTROL FOR INDOOR UNIT'S FAN
Thermostatic stops. In Heating mode, when set temperature has been reached inside the
room, the compressor stops and the indoor fan speed is lowered to avoid cold drafts.
Hot Keep. At the beginning of operation in Heating mode, the indoor fan will start only 5 minutes
later, i.e. when the temperature of indoor heat exchanger is adequate.
MICROCOMPUTER CONTROLLED DEFROSTING FUNCTION (HEATING MODE)
The microcomputer on printed circuit board can monitor all decreases in heating power of the air
conditioner caused by frosting on outdoor heat exchanger, and inputs the signal for automatic
defrosting; a LED lights up when this function is activated.
- 4 -
GENERAL INFORMATION
THERMOSTAT UNDER MICROCOMPUTER CONTROL
The thermostat being controlled by microcomputer allows remarkable energy saving and provides
more comfort, as the room temperature is checked with the greatest precision.
INDOOR FAN AUTOMATIC SPEED CONTROL
The airow from the Indoor Unit can be controlled step by step, on the basis of the difference
between the room temperature and the set temperature. This allows to reduce the lapse of
time needed to reach the desired temperature both in Cooling and Heating mode, by treating
the appropriate air volumes.
MOTORIZED LOUVERS FOR AIRFLOW DIRECTION
The aps can be controlled directly by the remote controller so as to reach your desired position.
• By pressing SWING " " button, you can start or stop the louver mouvement and set the
desired up/down air ow direction. Once the angle has been selected, the position is memorized
by the inner electronics for next start of the air conditioner.
[On Cassette 60x60 Model, “ ” button is disabled, so the left/right air ow direction cannot
be adjusted].
AUTORESTART AFTER A POWER FAILURE
• When a power failure occurs during operation, the air conditioner immediately stops.
• When power is restored, "OPERATION" lamp starts blinking. In particular, the air conditioner
will automatically restart after 3 minutes have elapsed since power is restored. This means that
it is not required to press "ON/OFF" button on the remote controller. The settings will be the
same as before the blackout.
DIAGNOSTIC & PROTECTIVE FUNCTIONS
Shown by codifed ashing of LED indicators on the Indoor Unit, they allow to diagnose in a quite
procise way the main malfunctions which may concern the air conditioner.
3-minutes' delay protection: there is a protective control of the Outdoor Unit, to prevent
compressor's damages after stops. This control is effective in case of malfunction, power failure,
turning off the system, etc. and it does not allow Outdoor Unit to restart before 3 minutes have
elapsed since the Unit stopped. During this time, Indoor Unit cannot run.
- 5 -
GENERAL INFORMATION
Recommended operating conditions
In order to obtain the Unit's best performances, it is recommended its use under the following
conditions:
Use of air conditioner out of the above mentioned temperature ranges could cause the intervention
of built-in protective functions consequently stopping the system operation.
NOTE: If the Units operates in rooms which are satured with oil vapors or volatile matters,
harmful substances could coat and clog the Indoor Unit's heat exchanger. Besides, scalings of
saltness could form on the Outdoor Units installed in sea-surroundings; if not removed, they will
damage the Units in a very short time. In both cases, contact the Authorized Technical Service
to require frequent maintenance.
Outdoor temperature:
-15°C to 43°C
Room temperature: 17°C to 32°C
COOLING OPERATION
CAUTION:
Room relative humidity should be less than 80%. If the air conditioner operates
beyond this limit, the surface of the heat exchanger could get covered with frost.
Outdoor temperature:
-15°C to 21°C
HEATING OPERATION
Room temperature:
0°C to 30°C
DRY OPERATION
Outdoor temperature:
11°C to 43°C
Room temperature: 17°C to 30°C
- 6 -
2. SAFETY PRECAUTIONS
Disposal of an old air conditioner
Before disposing an old air conditioner, please
make sure it is inoperative and carry out the
disposal by adopting all safety precautions.
Unplug it from the power line in order to avoid
risks of electric shock.
Please remember that an air conditioner
contains refrigerant uid, requiring specialized
waste disposal.
The valuable materials contained in the air
conditioner can be recycled. Contact your local
Waste Disposal Center for adequate disposal or
contact your Dealer for any question.
Please make sure that piping of your air
conditioner does not get damaged before
being picked up by the relevant Waste Disposal
Center. You can contribute to the protection of
the environment by adopting an appropriate
anti-pollution method of disposal.
Disposal of the packaging of your new air
conditioner
All the packaging materials used in the package
of your new air conditioner can be disposed
without any danger for the environment.
The cardboard may be broken or cut into
small pieces and given to a Waste Paper
Disposal Service. The wrapping bag made of
polyethylene and the polyethylene goam pads
contain no uorochloric hydrocarbon.
All these valuable materials may be taken to a
Waste Collecting Center and used again after
adequate recycling.
Consult your local Authorities for the name
and address of the Waste Materials Collecting
Centers and Waste Paper Disposal Services
nearest to your house.
General warnings for safety
• Do not operate damaged air conditioners. In case of doubt, contact your Dealer.
• Use of air conditioner must be carried out in strict compliance with the instructions listed futher
on.
• Do not damage any parts of the air conditioner that carry refrigerant by piercing or perforating the
piping with sharp or pointed objects, by crushing or twisting the tubes or scraping off the surfaces'
coatings. If the refrigerant spurts out and gets into eyes, this may result in serious injuries.
• Do not obstruct or cover the ventilation grille of the air conditioner. Do not put ngers nor insert
objects into the inlet/outlet vent or into the motorized louver.
• Do not allow children to play with the air conditioner. Children should be never allowed to sit on
the Oudoor Unit.
• The appliance is not intended for children and disabled people. They must not operate the air
conditioner without supervision.
• Electrical works must be carried out according to the local laws. If the power cable is damaged, it
must be replaced by the Manufacturer or by qualied Personnel. Size of power cables and connecting
wires must be adequate to the characteristics of the air conditioner (current values and power input
values).
• If fuses on the PCB are blown, they must be replaced with new fuses of the same type and size.
• After installation, power plug should be properly disposed.
• Exhausted batteries (infrared remote controller) should be properly disposed.
• Always remember to unplug the air conditioner before opening the inlet grille. Never try to unplug
the air conditioner by pulling off the power cable. Always grip the power plug rmly and pull it straight
out of the power socket.
Before starting the air conditioner, please read carefully the information in this "USER MANUAL".
The User's Manual contains very important suggestions relatied to installation, operation and
maintenance of the air conditioner and concerning your personal safety.
The Manufacturer accept no responsibility for the damages that may arise due to nonobservance of the instructions listed in this "USER MANUAL".
- 7 -
SAFETY PRECAUTIONS
SAFETY INSTRUCTIONS
• Please read carefully the following Safety Instructions before operating the air conditioner.
• A strict observance of the instructions indicated in this "USER MANUAL" will prevent personal
hurt and incidents to the User. Moreover, correct operation and long life of the system will be
ensured.
• Depending on the seriousness of potential risks and damages, the reported Instructions are
classied in two types: "WARNING" and "CAUTION". A strict observance of the Instructions is
required to guarantee your personal safety and the safety of the environments where the Units
are installed.
• The following Instructions are related to the air conditioner's installation. They have been
reported in this "USER MANUAL" just to allow the User to check that installation has been
properly carried out. If an improper installation - not corresponding to the Instructions - is veried,
please contact the Dealer or the Authorized Technical Service.
The User must never attempt to repair, install or perform special maintenance by
himself.
Key to symbols
WARNING
This symbol points out the risk of serious injury or death.
This symbol points out the risk of injury or damage to the
property.
Prohibition. Action or procedure not allowed, with serious effects
on objects and people.
CAUTION
Obligation. Compulsory action or procedure. The missed
observance could bring serious effects on objects and people.
!
!
!
• Strictly observe the instructions provided in this Manual.
• The air conditioning system contains inside its refrigerant circuit the R410A gas
under pressure. Never disconnect refrigerant pipes or connection joints.
• Never perform any handling on Outdoor Unit service valves or on Indoor Unit’s
unions.
• Keep this Manual in a safe place easy to reach at any time for convenient
reference.
• In case the air conditioner is transferred and reinstalled, this User’s Manual
should always be attached to the appliance.
- 8 -
SAFETY PRECAUTIONS
Installation
Never try to install this Unit by yourself, i.e. without the support of Tachnical Personnel. Never try to reapir
the Unit by yourself. The Unit's components can be reached only by opening or removing the covering
panels, and this involves exposure to high voltage. Even by disconnecting power supply, it is not always
possible to avoid the risk of electric shocks.
• Please always contact the Dealer or the Authorized Service Center for installation.
Never attempt to install the air conditioner by yourself, because improper installation
could cause electric shock, injuries, water leakage or re.
• Please always contact the Dealer or the Authorized Service Center for any servicing
operation or special maintenance.
Never try to repair or carry out special maintenance by yourself. Improper repair or
maintenance could cause electric shock, injuries, water leakage or re.
Please conrm that installation has been carried out according to the following prescriptions:
WARNING
!
!
!
• When installing, all possible countermeasures must be taken to avoid refrigerant leaks.
If there is a high concentration of refrigerant gas in the room, oxygen lack may occur.
• Do not install the air conditioner near burners, heat sources or ammable gas. This
is to avoid the risk of malfunctioning, re or explosion.
• Ensure that a circuit breaker has been installed on the power supply line of the air
conditioner, to avoid the risk of electric shocks.
• When installing in a small room, countermeasures should be taken in case of a
refrigerant leak exceeds the proper range. Otherwise, it will cause asphyxia.
CAUTION
!
!
!
!
• Ensure that drain hose and drain pipe installation has been carried out correctly.
Incorrect installation or maintenance will cause water leakage.
CAUTION
!
!
!
• Ensure that Indoor and Outdoor Units have been properly grounded.
Defective grounding could cause electric shock.
!
• This kind of appliance needs a specic circuit breaker with proper
protective devices against overcurrents and short circuits (fuses or
automatic switches).
Circuit
breaker
(specic)
- 9 -
SAFETY PRECAUTIONS
Always observe the operating precautions listed in the following tables. In this way, correct operation and
safeguard of people, animals and objects inside the air-conditioned room will be ensured.
WARNING
!
Use the correct voltage and frequency for power
supply.
Do not insert the air conditioner's plug into multiple
sockets or into sockets to which other appliances
are connected. Do not use plug adapters.
!
!
!
Fully insert the plug into the power socket and
make sure the connection is secure and without
play. Otherwise, sparks and re may occur.
Do not put heavy objects on the power supply
cord. Take care not to damage it. Do not use
supply cords which are faulty or damaged.
Do not pull the plug out of the power socket
by drawing the power cord. Damaging to the
power cord, to the plug or to the socket may
occur, and this could result in electric shock or
re generation.
Never turn off the air conditioner by pulling the
power supply plug out of the socket. This could
cause electric shock or re.
Always press the "ON/OFF" button on remote
controller.
Do not use extension cords. Do not use rolled
power supply cords.
Never touch switches, sockets or power supply
plugs with wet hands. This could cause electric
shock.
If you smell something burning, immediately turn
off the air conditioner, switch the circuit breaker
to "OFF" or "0", and contact the Authorized
Technical Service.
Do not insert any objects into the air inlet or
outlet of Indoor and Outdoor Units. Even if fans
are stopped, they could automatically start all at
once.
You should avoid to expose your body directly
to cool air for a long time. This may you cause
health problems to you.
Do not direct the airows towards infants, aged
or disabled people.
220~230V, 50Hz
MODE
FAN
TEMP
SLEEP FRESH
LED
FOLLOW
ME
TURBO
SELF
CLEAN
ON/OFF
ECO
TIMER
ON
TIMER
OFF
- 10 -
SAFETY PRECAUTIONS
CAUTION
!
!
!
!
Do not use sprayers near the air conditioner, and
do not spray anything towards the appliance.
Do not expose plants or animals to the direct
airow of the air conditioner.
Ventilate the room regularly while the air conditioner
is operating. Fail to follow this advice could result
in lack of oxygen inside the room.
For proper performance, operate the air conditioner
under the recommended temperature and
humidity range. If the Unit operates beyond these
conditions, malfunctions may occur or dew may
drip out of the Indoor Unit.
Do not place anything in front of the air conditioner
nor obstruct the air outlet.
!
Ventilation should be operated when using the
air conditioner and gas burners at the same
time. Insufcient ventilation will cause lack of
oxygen.
Do not place burners near the airow of air
conditioner.
To avoid the risk of electric shock, do not sprinkle
water or other liquid on Indoor Unit. Do not clean
the air conditioner by water spurts.
Do not expose food, animals, precision devices
or works of art to the direct airow of the air
conditioner.
When necessary, replace fuses with new ones
of the same type and size. Never use a piece of
iron or copper instead of a proper fuse, as it could
result in a malfunction or in a re accident.
Do not touch the heat exchangers' metal ns on Indoor and Outdoor Units. This could
cause hurts due to the sharp shape of the ns. Take care of this especially when removing
the air inlet panel and the air lter.
- 11 -
3. OUTLINE OF INDOOR & OUTDOOR UNITS
NOTE: The Figure has the only purpose to show the User how to operate for a correct use of the appliance.
Therefore, the real aspect of the Product may be lightly different.
1
2
3
4
5
6
7
8
9
10
11
12
Airflow louver (at air outlet)
Drain pump (drain water from Indoor Unit)
Drain pipe
Air outlet
Air filter (inside air-in grill)
Air inlet
Air-in grill
Display panel
IR Remote Controller
Refrigerant pipe
Air inlet
Air outlet
INDOOR UNIT
OUTDOOR UNIT
3
10
11
11
12
1
5
7
8
2
4
6
9
MODE
FAN
TE
M
P
SLEEP
FRES
H
LED
FOLLOW
ME
TURBO
SELF
CLEAN
ON/OFF
ECO
TIMER
ON
TIMER
OFF
- 12 -
4. LED INDICATORS ON INDOOR UNIT
The electronics of the air conditioner is able to diagnose eventual malfunctions which can be interpreted
by the 4 LED indicators on the Indoor Unit's frontal panel. According to the state of each indicator (ON,
ashing, OFF), the Authorized Technical Service is able to detect the common type of anomalies.
OPERATION LED
When connecting the Unit to the power source, the LED starts ashing. During the air conditioner's
operation, it stops ashing and lights up.
TIMER LED
It lights up when TIMER function is selected (air conditioner's programmed start and/or stop).
PRE/DEF (DEFROST/PREHEATING) LED
• In Heating mode, if a layer of frost forms on the outdoor heat exchanger, defrosting automatically
starts and the LED lights up.
• The LED also lights up when indoor heat exchanger's Preheating function is activated. This
occurs in Heating mode, in order to avoid the emission of air at low temperature (prevention
function anti-cold drafts).
ALARM LED
The LED ashes when the level in the water condensate pan exceeds the operation limit.
This also makes the compressor stop, till the condensate drain pump has eliminated the surplus
water.
TEMPORARY button
To start the air conditioner when the remote controller is not available, and to start the Test mode
in Cooling operation.
Buzzer
It emits a sound when a signal is received by the Indoor Unit.
Signal receiver
It permits to receive signals from the remote controller.
1
2
3
4
5
6
7
2
3
41
56
7
TEMPORARY
OPERATION TIM ER DEF./FAN ALARM
OPERATION LED
1
2
TIMER LED
3
PRE/DEF LED
4
ALARM LED
- 13 -
5. ADJUSTING THE AIRFLOW DIRECTION
Up/down adjustment
When pressing "ON/OFF" button on the remote controller, the Unit starts and automatically selects the
best angle for the motorized louver, according to the set operating mode (Cool, Dry or Heat mode).
It is possible to select your desired position for the motorized louver by pressing SWING " " button.
The louver changes 6 degrees in angle for each press.
The recommended positions according to the different operating modes are shown in the Figures
below:
If you hold down SWING " " button for more than 2 seconds, the motorized louver will start swinging
up and down automatically. See the Figure below.
• When the Unit is stopped, the motorized louver automatically moves to the closing position.
• Never move the motorized louver by hand, but always use the remote controller. Moving it by
hand may damage the control mechanism. In case the aps do not move correctly, stop the Unit
and restart it again after a few minutes.
• In Cool and Dry modes, the aps should not be oriented downwards for a long time. Otherwise,
condensate may form on the air outlet.
• When the louver swings or moves to a position which would affect the cooling or heating effect
of the air conditioner, it would automatically change the swing/moving direction.
Cool / Dry Heat
Automatic swinging
NOTES
Press SWING " " button several times till reaching your desired angle for air outlet louver. This
angle will be memorized at next restart of air conditioner.
- 14 -
6. EMERGENCY OPERATION & TEST SWITCH
OPERATION IN EMERGENCY MODE:
If you have lost the remote controller or its batteries are exhausted, the air conditioner can be started
by pressing once the Temporary button on the Indoor Unit's frontal panel. The air conditioner will start
operating in the Emergency running "AUTO" mode.
During Emergency running, signals transmitted by the remote controller can be received by Indoor
Unit.
Temporary button
TESTING THE AIR CONDITIONER IN FORCED COOLING MODE
Press the Temporary button twice. "OPERATION" LED starts ashing. The air conditioner will start
operating in forced "COOL" mode at "HIGH" fan speed for 30 minutes. Then, operation will switch to
"AUTO" mode.
During the Test, signals transmitted by the remote controller cannot be received by Indoor Unit.
NOTE: Do not use Test mode for normal operation.
End of operation in Emergency mode or in forced Cooling mode
Press the Temporary button twice during Emergency operation, or press the Temporary button once
during Test mode: the air conditioner will stop.
Normal operation can be restored by the remote controller as usual.
- 15 -
7. ORDINARY MAINTENANCE AND ADVICE FOR USE
Before starting any kind of ordinary maintenance:
1 - Stop the appliance by pressing "ON/OFF" button on remote controller;
2 - Move the circuit breaker to "OFF" or "0" position;
3 - Pull the plug out of the power socket;
4 - To reach the Unit, please use a stepladder or other appropriate bearing strong enough to
ensure your safety.
Cleaning the remote controller Cleaning the Indoor Unit
Do not use water, but a dry cloth. Do not use
products for glass cleaning, nor soaked in
detergents.
Use a dry and soft cloth. In case of need,
dampen the cloth in water and neutral
detergent, then wring well.
Never use any of the following products for cleaning
Benzine, paint solvents, polishing products,
by-products of oil in general, etc. may damage
the outside surfaces of Unit and cause
deformations and scratches on the appliance
and on the remote controller.
The use of very hot water (over 40°C) may
discolour and/or deform the plastic parts.
Indoor Unit's cleaning
NOTES:
• If the appliance or the inlet grille are very dirty, clean them with a cloth soaked in tepid water and neutral
detergent. Rinse in clean watrer and dry well. The presency of humidity on the inlet grille may cause
electric shocks.
• Never use any abrasive sponge for cleaning, to avoid scratching the Unit's surfaces.
• If the grille is open or has been removed, do not touch the metallic aps of the heat exchanger, as the
aps are sharp and may hurt you.
• Do not expose the grille or the Unit to direct sunlight, to avoid discolouring or deforming them.
WARNING
!
MODE
FAN
TEMP
SL
EEP
FR
ESH
LED
FOLLOW
ME
TURBO
SELF
C
LEAN
O
N/OFF
ECO
TIMER
ON
TIMER
OFF
Outdoor Unit's cleaning
• Check regularly that the air inlet and outlet are not obstructed by dust or dirt in general.
• For any other cleaning or maintenance of Outdoor Unit, always contact the Authorized Technical
Service.
- 16 -
Fig.1
Filter’s outside part
Fig.3
Fig.2
Filter’s inside
part
ORDINARY MAINTENANCE AND ADVICE FOR USE
Removing and cleaning the air lter
Open the frontal grille by seizing with the ngers the
little levers inserted in the grille's body, and slide them
to the open position (towards the centre).
Pull down the air inlet grille together with the lter
(Fig. 1).
Pull down the grille till opening it by 45°, then push the
grille and the lter upwards to detach them from the
Unit's body (see Fig. 2).
Clean the lter by using a vacuum cleaner, or wash it
with water. In case of washing with water, dry the lter
in the shade and not under the rays of sunlight or by
other heat sources.
• If the cleaning is carried out with a vacuum cleaner, the
lter's outside part must be oriented towards you.
• If the cleaning is carried out with water, the lter's
inside part must be oriented towards you (Fig. 3).
Reinstall the lter. Attach correctly the lter by the
special xed joints.
Close the inlet grille.
After removing the lters, do not touch the metallic aps
of indoor heat exchanger, as they are sharp and may
hurt you.
Do not operate the Unit without the air lter.
CLEAN THE AIR FILTERS EVERY 2 WEEKS
CAUTION
!
NOTES:
• The lters must always be clean: if they are clogged with dust or other solid particles in general, the cooling and
heating capacity of the air conditioner will be reduced. Moreover, the appliance will be noisier and consume more
electricity.
• Normally, it is not necessary to replace the lters: you only have to clean them at regular intervals. Replace the
lters when the accumulated dirt is too hard to be removed.
• In case the air lters are damaged and need to be replaced, it is necessary to order them as spare parts: please
contact your Retailer or the Authorized Technical Service.
• IMPORTANT: Never reinstall the lter on Indoor Unit in case it is damaged.
Normally, the cleaning must be carried out every 2 weeks.
However, if the air conditioner is used for many hours a day in a dusty environment, it must be cleaned more often
than other air conditioners used in less heavy conditions.
1
2
3
4
5
- 17 -
ORDINARY MAINTENANCE AND ADVICE FOR USE
At the beginning of season
When restarting the air conditioner after a long time, or at the beginning of the season, please carry out
the following procedure:
Do not obstruct the air inlet and outlet
Check if any objects obstruct the airow at the air inlet and outlet on Indoor and Outdoor
Units.
Check the Unit's xing
Check the condition of xing devices on Indoor and Outdoor Units, especially those
mande of iron on Outdoor Units which are more subject to corrosion, so as to avoid their
possible collapse.
Earth cable
Check if there are no false electric contacts and especially if the earth cable is not
interrupted and well connected.
An incorrect or inexistent earth connection may cause the danger of electric shocks.
CAUTION
Air lter
Check if there is the lter on the Indoor Unit. The lter must be clean. In case there is no
lter or the lter is dirty, reinsert or clean it.
Remote controller's batteries
Insert batteries in the remote controller's battery case.
Unit's start
The Outdoor Unit must be connected to the power
line 12 hours before its start. Insert the plug into the
power socket and move the circuit breaker to "ON":
"OPERATION" LED on Indoor Unit will start ashing
once per second.
Start the Indoor Unit by pressing "ON/OFF" button on
remote controller only 12 hours after the Outdoor Unit
has been powered.
1
2
3
4
5
6
!
1 2 3
MODE
FAN
TEMP
SLEEP FRESH
LED
FOLLOW
ME
TURBO
SELF
CLEAN
ON/OFF
ECO
TIMER
ON
TIMER
OFF
- 18 -
ORDINARY MAINTENANCE AND ADVICE FOR USE
At the end of season
At the end of the season or in case you foresee not to use the air conditioner for a long time, please
carry out the following procedure:
Dry the Unit
Operate the air conditioner in "COOL" mode for about half a day
by setting a temperature of 30°C, or operate the appliance in
"FAN" mode for half a day by setting a "HIGH" fan speed.
This is for drying the Unit and preventing the forming of moulds
and/or bad smells.
Disconnect the appliance from the power supply
Stop the air conditioner by pressing "ON/OFF" button on remote
controller, move the circuit breaker to "OFF" or "0" and pull the plug
out of the power socket.
This is necessary as the appliance consumes a little quantity of
electricity even if it is stopped.
Clean and reinstall the air lter
Clean the body or the panel of the Unit
Remove batteries from the remote controller
1
2
3
4
5
~ 6 hours
Cool operation / 30°C
Fan operation /
HIGH (fan speed)
!
123
MODE
FAN
TEMP
SLEEP FRESH
LED
FOLLOW
ME
TURBO
SELF
CLEAN
ON/OFF
ECO
TIMER
ON
TIMER
OFF
- 19 -
ORDINARY MAINTENANCE AND ADVICE FOR USE
Suggestions for economical use
Select a suitable temperature value
• In Heating mode, avoid to set too high temperature
value.
• In Cooling mode, avoid to set too low temperature
values.
Often clean the air lters
• To obtain the air conditioner's best performance, it is
necessary to clean the lters on Indoor Unit at least every
2 weeks, as already described. If dust accumulates on the
lter, the air conditioner's performance decreases.
Do not keep doors or windows open
• This decreases the air conditioner's performance and causes
an increase in electricity consumption. Moreover, in case of
thermal overload, the automatic protective functions may
intervene, and the air conditioner will stop operation.
Reduce the exposure to sunlight
• In Cool mode, protect the window panes by curtains or
shutters. In this way, you can obtain more comfort and a
reduction in electricity consumption.
Use TIMER function moderately
• Do not select operating intervals higher than real comfort
needs, and consider above all the real stay of people inside
the air-conditioned room.
Adjust the airow correctly
• With a little experience, it is possible to estimate by yourself
the increase in comfort which arises from a correct adjusting
of the airow coming out of the Unit. Energy consumptions
being equal, comfort remarkably increases.
°C
NO
!
MODE
FAN
TEMP
SL
EEP FRESH
LE
D
FOLLOW
ME
TURBO
SELF
CLEAN
ON/
OFF
ECO
TIMER
O
N
TIME
R
OFF
MO
D
E
F
AN
T
EM
P
S
L
EEP
FRES
H
LED
FOLL
OW
ME
TURBO
S
ELF
CLE
AN
ON
/O
F
F
E
CO
TI
M
ER
O
N
TI
MER
O
F
F
- 20 -
8. TROUBLESHOOTING
The following table shows a series of seeming malfunctions.
Please check the following items before calling the Authorized Technical Service.
WHAT HAPPENS
REASON
After a stop, the air conditioner
does not restarts immediately.
• If "OPERATION" LED on Indoor Unit lights up, it is normal that the
system does not immediately restart. A protective function (3-minutes'
delay) is active for preventing damages to the compressor every time
the operation restarts after a stop.
• If both "OPERATION" and "PRE/DEF" lamps light up, this is not a
malfunction: the compressor does not immediately restarts because of
the intervention of the anti-cold drafts protection.
Noise from the Indoor Unit or from
the Outdoor Unit
• In "COOL" mode or during a thermostatic stop, you may hear the noise
emitted by the operation of the drain pump on Indoor Unit.
• When the system stops after heating operation, the Indoor Unit emits
a creaking sound. This is normal: expansion and contraction of plastic
parts caused by temperature changes make this noise.
• During the start in "COOL" mode or after the stop of "HEAT" operation,
you may hear a gurgling sound or a hissing sound. This is the sound of
refrigerant gas owing through both Indoor and Outdoor Units.
• When operation mode is switched from "COOL" to "HEAT", you may
hear a hissing sound coming from the refrigerant circuit. This is the noise
of refrigerant caused by ow stop or ow change.
• The tone of operating noise changes. This noise is caused by the
change of frequency.
• The Unit can absorb the smell of rooms, furniture, cigarettes, etc.,
and then emits it again.
Dust comes out of the Indoor Unit.
The Indoor Unit gives off bad
smells.
• During operation in "HEAT" mode. This is because the Outdoot Unit
is carrying out the automatic defrosting.
Change into the "FAN" mode
during "COOL" mode.
• In order to prevent the frosting of indoor heat exchanger, the system
chenges into "FAN" mode automatically, and restores to the "COOL"
mode after soon.
• When the room temperature value drops to the set temperature value,
compressor stops and the Indoor Unit changes to "FAN" mode. When
temperature rises up, the compressor starts again. It is the same in
"HEAT" mode.
White mist comes out of the
Indoor Unit.
• If during operation in "COOL" mode, humidity is high and the Indoor
Unit's inside is very dirty, temperature distribution inside the room
becomes uneven. It is necessary to clean the Indoor Unit: please call
the Authorized Technical Service.
White mist comes out of the
Outdoor Unit.
• This happens if the Unit is used again after a long time. During this
time, dust has got inside the Unit.
The Outdoor Unit's fan does not
spin.
• This happens during the system's operation. The speed of the fan
is controlled in order to optimize product operation.
Following symptoms are not air conditioner's troubles
- 21 -
TROUBLESHOOTING
Before starting troubleshooting, please perform the following checks:
Problems deriving from the remote controller
WHAT HAPPENS
CHECK
POSSIBLE REASON
Check if "AUTO" mode is displayed
on remote controller.
The User cannot change the
indoor fan speed.
When operating in "AUTO" mode, the
indoor fan speed is automatically set
by the electronics.
Check if "DRY" mode is displayed
on remote controller.
It is not possible to change the settings while the air conditioner is operating
WHAT HAPPENS
CHECK POSSIBLE REASON
Signals from the remote controller
are transmitted only when "ON/
OFF" button is pressed.
The transmission indicator on the remote controller does not light up
Check if TIMER function is
active.
Signals from remote controller cannot
be transmitted because the appliance
is stopped.
WHAT HAPPENS
CHECK POSSIBLE REASON
Set point temperature is not
displayed on remote controller.
Set point temperature is not displayed on remote controller
Check if "FAN" mode has been
selected.
Set temperature cannot be set when
operating mode is "FAN".
WHAT HAPPENS
CHECK
POSSIBLE REASON
Check if TIMER OFF function has
been set.
After a lapse of time, "TIMER
OFF" indication disappears from
the display.
The air conditioner automatically stops
at set time, and TIMER indication on
remote controller goes off.
"TIMER" indications displayed on remote controller go off
WHAT HAPPENS
CHECK
POSSIBLE REASON
Check if remote controller is actually
turned to the receiver on the Indoor
Unit, and that no obstacles are
placed between them.
When pressing "ON/OFF" button
on remote controller, no receiving
tone is heard from Indoor Unit.
Turn the remote controller to the
receiver on the Indoor Unit, then push
"ON/OFF" button.
Press "RESET" button.
The signal receiving tone from Indoor Unit is no more heard
Remote controlller's buttons are
not active.
NOTE: Sometimes, the remote controller may stop operating correctly because of interferences or
electromagnetic noise. In this case, it is necessary to remove batteries from the remote controller,
possibly eliminate the noise's reason, wait a few minutes and reinsert the batteries in their case. Now
operation should be normal.
When operating in "DRY" mode, the
indoor fan speed is automatically set
by the electronics.
After a lapse of time, "TIMER
ON" indication disappears from
the display.
Check if TIMER ON function has
been set.
As soon as set time for start has been
reached, the air conditioner starts and
the displayed time goes off.
- 22 -
TROUBLESHOOTING
Problems and possible solutions
The following table shows a series of problems and their possible reasons and solutions.
Compiere le veriche descritte prima di richiedere l’intervento dell’Assistenza Tecnica.
PROBLEM
REASONS
SOLUTIONS
• Power failure.
• Power switch is off.
• Fuse of power switch may have
burned.
• Batteries of remote controller exhausted
or other problem of controller.
Unit does not start.
• Wait for the comeback of power.
• Switch on the power.
• Replace the fuse.
• Replace the batteries or check the
controller.
Air flowing normally, but
completely cannot cooling.
• Temperature is not set correctly.
• The 3-minutes' delay protection for
compressor is active.
• Set the temperature properly.
• Wait 3 minutes, then the compressor
will restart and the Unit will restarts
cooling.
Unit starts and stops
frequently.
• Refrigerant is too little or too much.
• Presence of air or insufcient refrigerant
gas in the refrigerating circuit.
• Compressor's malfunction.
• Voltage is too high or too low.
• System circuit is blocked.
• Check leakage, and rightly recharge
refrigerant.
• Vacuumize and rightly recharge
refrigerant.
• Repair or replace compressor.
• Install a manostat.
• Find reasons and solution.
Low cooling effect.
• Heat exchanger on Indoor and
Outdoor Units is dirty.
• Air lter is dirty.
• Air inlets and outlets on Indoor/
Outdoor Units are obstructed.
• Doors and/or windows are open.
• Sunlight directly shines.
• There are too much heat sources.
• Outdoor temperature is too high.
• Leakage or lack of refrigerant.
• Clean the heat exchanger.
• Clean the air lter.
• Eliminate all dirties on the air inlets/
outlets.
• Close doors and/or windows.
• Install curtains in order to shelter the
Unit from sunshine.
• Reduce heat sources.
• AC cooling capacity is reduced (this
is normal).
• Check leakage and rightly recharge
refrigerant.
Low heating effect.
• Outdoor temperature is lower than
7°C.
• Doors and/or windows are not
completely closed.
• Leakage or lack of refrigerant.
• Install further heating devices.
• Close the doors and/or the windows.
• Check leakage and rightly recharge
refrigerant.
- 23 -
TROUBLESHOOTING
NO.
Communication fault
between Indoor and Outdoor
Unit.
Error Codes on Indoor Units HTFU 200-260 XL-1 & HTFU 350-530 XAL-1
Malfunction
"OPERATION"
lamp
"TIMER"
lamp
"PRE/DEF"
lamp
"ALARM"
lamp
Room temperature sensor
is abnormal.
Indoor heat exchanger's
sensor is abnormal.
Outdoor heat exchanger's
is abnormal.
Water-level alarm
malfunction.
EEPROM malfunction.
Outdoor unit voltage
protection.
1
2
3
4
5
6
7
9
CAUTION:
if one of the following malfunctions occur, immediately stop operation, turn off the main switch and contact
the Authorized Technical Service:
• You smell something burning.
• "OPERATION" LED on Indoor Unit is ashing rapidly (5Hz). This lamp is still ashing rapidly after turning
off the power and turn on again.
• Remote controller is malfunctioning, or its buttons do not work well.
• A safety device such as a fuse or a breaker frequently actuates.
• Obstacles or water enter the Unit.
• Water leaks from Indoor Unit.
• Other malfunctions are observed.
Never try to repair the Air Conditioner by yourself
8
IPM module protection.
Outdoor unit over-current
protection.
ƿ
X
X
X
ƿ
ƿ
ƿ
ƿ
ƿ
ƿ
X
X
X
ƿ
X
•
•
ƿ
X
X
ƿ
X
X
X
X
X
X
X
X
X
ƿ
X
•
X
•
ƿ
( Extinguish; Flash at 5Hz; On).
X
ƿ
•
- 24 -
• When a power failure occurs during operation, the air conditioner stops immediately.
• When power is restored, the "OPERATION" lamp on the Indoor Unit starts blinking.
• In particular, the air conditioner will restart automatically after 3 minutes have elapsed
since power is restored. This means that it is not required to press the "ON/OFF" button
on the remote control.
The settings will be the same as before the blackout.
However, it is necessary to program TIMER again, as in case of a blackout, TIMER
settings for automatic start/stop of the air conditioner are cancelled.
9. AUTOMATIC RESTART AFTER A POWER FAILURE
NOTES
NOTES
NOTES
00335962 02/2016
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