Eisvogel Zhendre R410A User manual

080505-NIN-SQ-EN 1/24 EN
INSTALLATION MANUAL
ENGLISH VERSION
WALL SPLIT
QUICK COUPLING
R410A INVERTER
SQI
R410A
SQR
R407C
SQP

080505-NIN-SQ-EN 2/24 EN
PRELIMINARY INSTRUCTIONS
xPlease read carefully all instructions included in this manual before installation or servicing the product.
xContact qualified and authorized service technician for repair and maintenance of the product.
xIf the wiring cable is damaged, it must be replaced by the manufacturer or its service agent or a similar
qualified person.
xInstallation work must be performed in accordance with the national wiring standards by authorised personnel
only.
xYoung children should be supervised to ensure that they do not play with the air conditioner.
xThis air conditioner is not intended for use by young children or invalid persons without supervision.
xPlease note by your side the product model, serial number, name of the dealer, date of purchase and date of
installation. These informations will be necessary for further communication with the technical support.
xWhen permanently stopping use of the product to dismantle it and dispose of it, cut off all electrical power
supplies from the unit, as well as power supplies from any remote coordination systems. Ensure that all
electrical protection devices are locked on. Use a recovery unit to transfer all the refrigerant from each
element of the system into an appropriate container (refrigerant storage bottle). The refrigerant can then be
returned to the manufacturer for disposal or recycling. It is strictly against the law to dispose of the refrigerant
in the atmosphere. According to the circumstances, empty the refrigeration oil into an appropriate container
and dispose of it in accordance with the local regulations applicable to hydrocarbon waste matter.
xAfter dismantling, the system components will be destroyed/drained/disposed of in landfill sites, in accordance
with the local regulations in force.
xProduct destruction should follow recycling scheme following procedures of recycling of waste electrical and
electronic equipment related to the European standard EN50419 :2005 (directive 2002/96/EC).
CONTENTS
1- FEATURES.............................................................................................................. 3
2- PRECAUTIONS....................................................................................................... 3
3- IDENTIFICATION OF PARTS............................................................................... 5
4- INSTALLATION ..................................................................................................... 6
5- REMOTE CONTROL AND DISPLAY ................................................................ 12
6- OPERATION INSTRUCTIONS............................................................................ 15
7- CARE AND MAINTENANCE ............................................................................. 15
8- DIAGNOSIS........................................................................................................... 15
8- DIAGNOSIS (flashing LED s) ................................................................................ 16
9- SPECIFICATIONS ................................................................................................ 17

080505-NIN-SQ-EN 3/24 EN
1- FEATURES
xThis air conditioner is made up of one outdoor unit and one wall mounted indoor unit equiped with a quick
coupling connection..
xThe outdoor unit (which includes the compressor) is designed to be installed outside the building.
xThe indoor unit(s) are designed to be installed inside the building, near the ceiling (they function by blowing air
through their base).
xThe outdoor unit and the wall mounted indoor unit are linked with a flexible refrigerant piping with quick
coupling connection clamp using and wiring cables.
xThe air conditioning unit automatically regulates the temperature of one or more rooms, bringing you comfort
and temperature control according to your needs.
xIt can also dehumidify each room (cooling mode)
xIt uses advanced technology.
xIt works safely and reliably.
xThis air conditioning unit is a highly effective piece of equipment that can make you considerable savings in
energy consumption.
2- PRECAUTIONS
Please read the following instructions carefully as well as the general recommendations relating to the installation
of air conditioning products, available on www.zhendre.com or sent by post by the Zhendre company on request.
To avoid actual bodily harm or injury to users or other persons, you must adhere to the following instructions.
If you do not follow these instructions, you risk using the appliance incorrectly which may lead to actual bodily harm
or damages, the severity of which is indicated below.

080505-NIN-SQ-EN 4/24 EN
2- PRECAUTIONS (Continued)
xNo malfunction caused by the failure to respect the installation instructions will be covered by the guarantee.
xThe unit should be installed in an easily accessible zone. Any additional costs relating to hire of specific
materials to access the unit will be met by the client.
¾Once you have received your air conditioning unit (see section on "installation")
xIf necessary, contact a professional so that he determines if your electrical installation is appropriate.
xPlug the power supply cord in correctly.
xDo not use a damaged or non-standard power supply cord.
xDo not plug other appliances into the same socket.
xDo not use an extension lead.
xDo not switch the appliance on/off by unplugging the power supply cord.
¾Using your air conditioning unit (see section on "instructions for use")
xProlonged exposure to direct airflow from the product may be harmful to your health. Do not leave occupants,
animals or plants exposed to direct airflow for too long.
xDo not use this air conditioning unit for specific purposes (for example to cool precision appliances, food,
animals, plants or art). Such use could lead to damage of these materials.
¾Cleaning and maintenance (see section on "maintenance")
xDo not touch the metal parts of the appliance when removing the filter. You risk injury from touching the sharp
metal edges.
xDo not use water to clean the inside of the air conditioning unit. Contact with water could weaken the electrical
insulation and cause electrocution.
xWhen cleaning the appliance, first check that the power and the switch are off. When the appliance is
operating, the fan rotates at high speed. This can cause injury if the power is switched on accidentally during
cleaning.

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3- IDENTIFICATION OF PARTS
¾Accessories (for each indoor unit)
No Picture Description Quantity
1 Plate installing 1
2 - Pegs 8
3 - Screw A ST 3,9x25 8
4 Joint 1
5 - Drain pipe 1
6
Remote Controller 1
7 - Screw B ST 3,9x10 -C-H 2
8 Remote controller holder 1
¾Infra red remote control (all models)
Note: all illustrations in this manual are of an explanatory nature. The design of the units and their accessories and
quantities can differ considerably from model to model.
1
3
4
2
5
8
11
10
9
¾Indoor Unit
1. Front panel
2. Air Inlet grille
3. Air filter
4. Air outlet
5. Display PCB
6. Remote controller
7. Plate installing
¾Outdoor Unit
8. Refrigerating linking pipes & drain pipe
9. Air Inlet grille
10. Air outlet
11. Quick couplling
7

080505-NIN-SQ-EN 6/24 EN
4- INSTALLATION
xGENERAL RULES
¾Only trained and qualified persons are authorised to install, maintain and repair air conditioning products.
Non-qualified users must not install the products without assistance.
¾Before starting the installation, please read the safety and installation instructions very carefully. This
document is published by the manufacturer and indicates the general rules to be followed for the installation of
air conditioning products.
¾In addition, please read the following carefully.
xGUIDELINES
¾The indoor wall-mounted unit is designed to be mounted at the top of a wall, inside a suitably insulated
building.
¾The outdoor unit is designed to be installed outside in a well-ventilated space.
¾Each indoor unit is linking to the outdoor unit by :
- A flexible refrigerant piping having 4m length with a connection using a clamp to be connected to the outdoor
unit. This piping can be bend manually.
- An electrical wiring cable made up of several wires with a quick connection principle to be fitted on the
outdoor unit.
¾Each indoor unit also has an insulated tube for evacuating condensation that should drain outside the
building or into a drainage tube.
¾A hole should be made through the wall for the flare connections, electrical interconnection cable and drain
hose to pass through.
¾Depending on the model, the whole product is powered by electricity via the indoor unit or the outdoor unit
(for some multisplit models the product is powered by both units).
Some models are equipped with an electric cable complete with plug.
¾STAGES OF INSTALLATION
The stages of installation should be carried out in the following order:
1- Choosing the sites
2- Installation and flare connections
3- Electrical connections
4- Operational test
These are described below.
1- CHOOSING SITES
¾General rules
-The units must be installed on a sufficiently strong support to bear their weight.
-Respect the guidelines on the space to be left around the units to avoid any obstruction of the airflow
-The distance and the height between the outdoor and the indoor units must fall within the recommended limits.
-Do not place animals or plants near the product's air outlets or inlets.
-Do not place the units near to a heat or vapour source.
-Choose a site where no obstacles can block access to or operation of the units.
-For outdoor and indoor units, ensure that condensation can be drained adequately by gravity (via a tube for indoor
units) or by installing a drainage pump where necessary.
-Ensure that the support and the fixing system can adequately bear the weight of the units without any risk.
-Do not install units in explosive environments.
-Check that no noxious substances are present in the air such as sulphur or oil vapours.
-If the product is installed in a polluted region: increase the frequency of maintenance.
-Ensure that the units are installed horizontally in order to ensure that condensation is evacuated correctly.
-All electronic appliances are sensitive to lightening; therefore, it may be wise to protect the installation with a
lightening arrester.
¾Indoor unit
-Do not install the unit in an environment in which the temperature can be very variable (avoid installing close to
doors leading outside, direct sunlight).
-Choose a place where the warm air flow, the cool air flow and the sound levels generated by the unit are not likely
to disturb the occupants of the building.
-Choose a place where there will be no obstructions around or in front of the unit. The choice of place to install the
unit must comply with recommendations on space indicated in the paragraph on "specifications". Failure to comply
with these recommendations can affect the product's performance and lead to problems of temperature regulation
as well as making maintenance operations difficult.

080505-NIN-SQ-EN 7/24 EN
¾Outdoor unit
-For better efficiency, it is preferable to install the outdoor unit on a shaded wall of the building that on a wall
exposed to direct sunlight.
-Choose a place where the warm airflow, the cool airflow and the sound levels generated by the unit are not
susceptible to disturbing the occupants of the building.
- The space that must be left around the outdoor unit in order to ensure that access is easy for maintenance
purposes and to ensure that the product performs adequately are indicated in the "specifications" paragraph.
-If a canopy is installed over the outdoor unit, ensure that there can be no heat build-up under it.
-In the case of installation on a roof or a wall, ensure that the fixing system is strong enough, that the unit is fixed to
a strong support and that it conforms to building regulations.
-The unit must always be placed on silent-blocs (not provided) which absorb vibrations that could also vibrate the
supports.
-If possible install the outdoor unit in a place protected from the rain, snow and water dripping or streaming from
the roof.
¾Flare connections
- The maximum length and height of the flare connections should not exceed the manufacturers specifications at
the risk of leading to problems of oil return and thermodynamic function.
See paragraph SPECIFICATIONS for maximum lengths and heights.
2- INSTALLATION AND FLARE CONNECTIONS
¾Installation and connection of the indoor unit
The stages of installation of the indoor unit must be carried out in the following order:
A- Installation on the supporting slab
-Select the exact place you plan to put the supporting slab taking into account its dimensions, the
dimensions of the unit, as well as the site of the hole through which the connecting tubes/wires will
pass in the case that you have chosen a right-hand or left-hand exit (see below).
-Choose the pegs, the type of screws and the number of screws needed to fix the support slab to
the wall.
- Fix the slab horizontally onto a solid part of the wall and check it is straight using a spirit level.
-Use a metal detector to locate any obstacles in the wall before drilling holes to pass the tubes
through (see below for where to place the hole).
B- Choose the way the flare connections will be pointing
-The refrigerant piping is already fitted to the indoor unit, but it can only go out from the indoor unit
by the left side. The reason is that the piping cannot be bent on a part of its length located behind
the indoor unit.
-In the case of a connection at the back on the left, it is not necessary to modify the plastic panels.
- In the case of a connection on the left hand side, markers are pre-cut ("pipe cover (left)") on the
back panel for this purpose.
CAUTION
The pipe from here to the evaporator
can not be bent
Evaporator
ATTENTION
Le tube à partir de ce point jusqu’à
l’évaporateur ne doit pas être plié
Evaporator
Axes de
sortie non
autorisés

080505-NIN-SQ-EN 8/24 EN
C- Drilling a hole for the flare connections
-In the case of a connection at the back on the left, choose the site for the hole through which the
flare connections, drain hose and/or electrical interconnection cables will pass, using the diagrams
shown in the "SPECIFICATIONS" chapter.
-Drill a hole 80mm in diameter on a slight downward angle towards the outside of the building (see
figure 3).
(if necessary pass a smooth plastic cylindrical hollow tube of equivalent diameter to the hole through
the hole to prevent any damage to the flare connections, drain hose and/or electrical interconnection
cables as they pass through the wall).
Figure 3
D- Installing the flare connections on the indoor unit
-Take care not to pinch the refrigerant piping.
-Make the piping get through the hole before drilled, with the handle of the clamp previously turned
down towards the front of the piping.
-Position the indoor unit and to begin with only attach the top eyelets located at the back of the
outdoor unit onto the top hooks located on the top of the supporting slab, try to move the unit left or
right to check that it is correctly hooked into place.
- The connection of the flare connections can now be made more easily by lifting the bottom of the
unit away from the wall using a rigid but light material such as a block of polystyrene (see diagram
below).
- The pipe bending should not have a bending radius below 8 centimeters and the angle shoud be
at minimum 90° on the whole length where the pipe bending is allowed.
E- Fitting the drain hose
-Pass the drain hose along the flare connections positioning it under them.
- The drain hose should always be directed slightly downwards towards the drainage outlet so that it
never overlaps the drainage tray (risk of overflowing):
« pente vers le bas » = slope downwards
- The following drainage configurations must to be avoided:
- A rigid plastic tube can be used to extend the condensation drainage tube (Do not use copper).
- The outdoor diameter of the condensation tube to which the extension can be connected is 16
mm.
- This extension must be thermally insulated in order to prevent condensation appearing.
- When fitting a lift pump as an accessory, there are risks of the pump draining if there is too much
height with a pump whose diameter is too small.

080505-NIN-SQ-EN 9/24 EN
-Then fit the indoor unit into place by inserting the hooks into the bottom of the support slab.
- Again try to move the unit left or right to check that it is correctly fixed and adjusted to its position.
- Seal the hole through which the connections pass to avoid draughts from the outside blowing
inside.
¾Installation and connection of the outdoor unit
A- Preliminary instructions
- Choose a place free of any dust or foreign matter that could obstruct the coil too quickly.
-If the unit is installed on the ground, choose a place which does not run the risk of being flooded.
-Do not install units in explosive environments.
-Install the outdoor unit on a rigid platform, flat and made from dense material (such as concrete)
and capable of supporting the weight of the unit and limiting noise and vibrations.
-Between this platform and the unit, fix silent-blocs (dampers) made from a plastic material that will
effectively absorb vibrations.
-For reversible products, leave a clearance below the unit of 100mm (single split) and 200mm
(multisplit) to avoid blockages to the condensation drainage hole when the outside temperature
drops below 0°C.
-In some regions where the temperature in winter remains below 0° for long periods, it may be
necessary to install a heated cord from inside the outdoor unit to the base of the coil, coiled around
the water tray and exiting the condensation drainage hole (power = 25W/m minimum).
- The unit should be pointed away from the prevailing wind direction.
-The unit should be solidly fixed to the platform by screws of at least 10mm diameter.
-If the support is fixed to a wall, this should conform to the local standards in force; it should be
ensured that it is strong enough to support the weight of the product and the effect of the wind.
Similarly, the wall should be made from a strong material such as concrete or brick and be free from
any trace of damp. The fixings used to fix the product to the support and the support to the wall
should be strong and reliable.
B - Fixing for outdoor unit
The dimensions for between the axes necessary for fixing the product according to the different
models of outdoor unit are detailed in the paragraph on "SPECIFICATIONS".
C- Installation of the condensation drain hose connection
For reversible products, in the event that the condensation cannot be drained directly from under
the product, a drain hose must be connected:
-Place the seal onto the joint.
-Insert the joint into the drainage hole located under the bottom panel of the unit.
-Turn the elbow 90° to lock it.
-Connect the joint to a drainage hose (not provided)
- The outdoor diameter of the drain hose to which the extension can be connected is 13 mm.
- This extension should be thermally insulated in order to avoid condensation in case the extension
is in an environment which must not become too damp.
-In some regions where the temperature in winter remains below 0° for long periods, it may be
necessary to equip the extension with a heated cord.

080505-NIN-SQ-EN 10/24 EN
D- Connecting flare connections to the outdoor unit
- The connection of the refrigerant piping is made with a connection clamp equipped with a handle
for locking.
- When needed, the clamp can be lubricated locally with some lubricant compliant with R410A or
R407C refrigerant depending on the refrigerant used.
- Remove the protective cap or plug from the male and the femelle clamps.
-This step should respect the good engineering pratice and be in accordance with the following
specifications or it may generate some leakages:
Step 1 : Step 2 : Step 3 :
Step 1
Step 4 :
Step 5 : Step 6 :
1. Male clamp
2. Femelle clamp
3. Moving part (latch)
4. Handle
- Position the male clamp in
front of the the femelle clamp
- Pull down the moving part
(latch) of the femelle clamp
- Push the male clamp inside the
femelle clamp keeping down the
moving part (latch) and checking
during this step that the male
clamp is always correctly in line
with the female clam
p
.
- Slide up the moving part (latch) while
keeping the pale clamp inside the
female clamp after checking that male
and female clamps are perfectly in
contact on all of their contact area.
- Pull down to the limit stop the locking handle by pressing
firmly.
- Check that the moving part (latch) of the female clamp is
correctl
y
locked.
- The refrigerant piping is now
connected.
- As a precaution, check the
refrigerant tightness by using a
refri
g
erant leaka
g
e detector.
1
2
3
4

080505-NIN-SQ-EN 11/24 EN
3- ELECTRICAL CONNECTIONS
A- Safety rules and preliminary instructions for basic installation
-All cables must conform to local and national standards and must be installed by a qualified
electrician.
-The electrical power supply should be equipped with a separate electrical protection, such as a D-
curved differential circuit breaker or time delay fuses, for which the specifications (especially the
diameter) must comply with the manufacturers instructions and with local standards in force.
-Before connecting the product to the electricity supply, the power supply should be checked to
ensure it complies with standards especially with regard to cable sections, electrical protection
devices and earthing.
-If the cord has deteriorated, it should be replaced by the manufacturer, their technical
representative or similarly qualified person in order to avoid any risk of bodily harm or damage to
the product itself.
- To avoid all risk of bodily injuries or electric shocks, always ensure that the product is
disconnected from the electricity supply before undertaking any intervention during installation,
maintenance or cleaning.
-For your own safety and protection, the power supply cord of this unit is earthed.
-If there is a fault in the electricity network (low voltage, high voltage, no lightening protection in a
high-risk zone), the installation technician should refuse to install the product until the electricity
network and its protections conform to standards.
-The voltage should be between 90% and 110% of the nominal voltage when the product is
switched off but also when it is operating at full capacity.
- Ensure that the earth wire is continual and is correctly connected.
-Connect the electrical cables according to the electrical connection diagram shown on the
electrical cover of the outdoor unit and the indoor unit(s).
-All electric cables and their adjustments must comply with the local regulations in force and wiring
should be carried out be a qualified technician.
-Check that the electric power available is sufficient.
-The product should be equipped with its own power cord, no other electrical equipment should be
connected to this cord, it must be protected by a separate electrical protection.
-The type and diameter of the electrical protection must conform to the manufacturers instructions.
-This protection should be equipped in particular with an earthed differential that serves to protect
people, this should be installed in a permanent manner and the space separating the contacts
should be at least 3mm per active conductor.
-Any terminal not used on the electrical terminal block should be tightened to prevent it
untightening under the action of the vibrations and causing a short-circuit by falling off inside
the product.
A- Method
The product is powered by the main electrical power supply coming from the wiring cable of the
indoor unit. Depending on the product configuration, the power cable can be provided with an
electrical plug with earth junction. An electrical wiring is also provided to connect the outdoor unit to
the indoor unit. This wiring is equipped with a junction plug on its end to make the connection
easier. The earth wire of this wiring must be connected on the metal panel inside the outdoor unit
using the dedicated screw for which the location is indicated just close to the electrical junction
connector.
B- Connection to outdoor unit
(See diagram below)
-Remove the cover of the electric compartment of the unit.
- Unscrew the cable clips.
-Connect the cables according to the markers indicated on the terminal block.
-Re-screw the cable clips onto the cable sheath.
-Re-screw the protective cover in place.

080505-NIN-SQ-EN 12/24 EN
4- OPERATIONAL TEST
After checking that the following steps have been carried out:
a. the service valves have been opened up completely.
b. The flare nuts are tightened according to recommended coupling torque.
c. Checks for leaks are negative.
Ensure that the product is functioning correctly in the various operating modes available. Note in
particular in cooling mode (and in heating mode for reversible products) the operating pressure and the
air inlet and outlet temperatures.
It is advisable to note this on a product activation sheet in order to have a reference in case of
subsequent interventions. In this case it is best to use the manufacturers document designed for this
purpose (provided with the documentation or sent by your distributor on request).
5- REMOTE CONTROL AND DISPLAY
Each indoor unit is delivered with an infrared remote control.
A receiver located on a display panel on the front of the indoor unit (wall-mounted and cassette type products) or
on the front of a separate control box (ceiling recessed type product) receives the remote control infrared signal.
¾RECEIVER
This is located on the display panel behind the front of the indoor unit.
Infrared Receiver
¾PRECAUTIONS
-Ensure that no obstacles can obstruct the infrared transmission between the remote control and the receiver.
- Do not use liquid detergent to clean the remote control.
-Keep the remote control away from excessive temperatures or radiation zones.
-Ensure that no remote control for any other appliance can interfere with the product.
¾REMOTE CONTROL SPECIFICATIONS
-Voltage 3.0V
-Range 8m
-Temperature for use: -5°C to +60°C
¾FUNCTIONS
-Operating modes: Cooling, heating, dehumidifying, fan, automatic.
-24 hour programming.
-Recommended temperature for use: +17°C to +30°C.
-LCD display for all functions

080505-NIN-SQ-EN 13/24 EN
¾DESCRIPTIF OF BUTTONS
Type : R51M/E
1 TEMP À
This reduces the set temperature.
2 MODE
This enables the operating mode to be selected.
Each time the button is pressed, the operational mode changes, in the following order:
AUTO (automatic) -> COOL (cooling) -> DRY (dehumidifying) -> HEAT (heating) -> FAN (fan only) -> return to
AUTO (automatic) -> etc.
Note: the HEAT mode (heating) is only available on reversible products.
3 SWING
This enables the user to select an automatic sweeping motion or to fix the position of the air outlet around the initial
position by using the AIR DIRECTION button (see below).
4 RESET
Resets the remote control settings (returns to the settings displayed when initially switched on).
5 SLEEP
Enables the user to select the energy saving mode.
In this operational mode, the length of the operating time for the compressor is limited by an automatic and gradual
increase (in cooling mode) or decrease (in heating mode) of the set temperature: 1°C after one hour of operation,
2°C after 2 hours of operation and maintained at 2°C thereafter.
After 7 hours of operation in energy economy mode, the product stops.

080505-NIN-SQ-EN 14/24 EN
6 LOCK
This locks the remote control settings. Pressing this button a second time deletes this function.
7 TIMER OFF
This allows the user to programme a duration after which time the product stops.
8 TIMER ON
This allows the user to programme a duration after which time the product starts.
9 ON/OFF
This starts or stops the product.
10 FAN SPEED
This allows the user to select the fan speed of the indoor unit in the following order: automatic speed -> LOW (low speed) ->
MED (medium speed) -> HIGH (high speed) -> back to automatic speed-> Etc.
In automatic speed mode, the product adjusts its own speed depending on the difference between the set
temperature and the temperature in the room.
11 TEMP ¿
This increases the set temperature.
12 AIR DIRECTION
This fixes the initial position of the vents for the automatic sweeping motion.
Wall-mounted product: this allows the air blow outlet position to be reversed: upwards or downwards.
13 LED DISPLAY
This allows the set temperature display to be hidden or displayed on the display panel.
14 TURBO
This allows the room temperature to be reached more quickly in cooling mode (high-speed fan mode).
¾REMOTE CONTROL DISPLAY
1 Infrared transmission indicator
This indicator appears when the remote control transmits a signal to the receiver.
The receiver then emits a BEEP to acknowledge the signal.
2 Operating mode indicator
An index allows the user to view the operating mode selected:
AUTO = Automatic
COOL = Cooling
DRY = Dehumidifying
HEAT = Heating
3 Locked indicator
The locked indicator appears when the buttons are disabled.
4 Programming indicator
The programming indicator appears in this zone:
"TIMER ON" is indicated if the product is programmed to start at a certain time.
"TIMER OFF" is indicated if the product is programmed to stop at a certain time.
"TIMER ON OFF" is indicated if the start and stop times are both programmed.
If there is no indication, then no start or stop time has been programmed.
5 Fan speed indicator
An index allows the user to view the fan speed selected:
LOW = Low speed
MED = Medium speed
HIGH = High speed
If there is no indication, then the fan speed is set to automatic.

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6 Digital display
Two numbers in this zone indicate the set temperature selected.
7 Operational indicator
This icon appears when the appliance is operating.
It disappears when the appliance is switched off.
Note : for any other informations concerning this chapter, please refer to the user’s manual.
6- OPERATION INSTRUCTIONS
Please see the instructions for use for this chapter.
7- CARE AND MAINTENANCE
Please see the instructions for use for this chapter.
Maintenance of the filters and monitoring of the thermodynamic function must be carried out periodically to
guarantee adequate performance of the product and increase the lifespan of its main components.
8- DIAGNOSIS
The following tables give indications relating to diagnosing the main faults that may occur after installation.
INCIDENT POSSIBLE CAUSES ACTION TO BE TAKEN
No cooling or heating
The compressor and the
outdoor ventilator are not
working.
-Power failure.
- Fuse has blown or circuit breaker is
switched on.
-Voltage too low.
-Faulty contactor, relays, compressor
capacitor (single phase models).
- Electrical connections are loose.
-Set temperature too low (in heating
mode) or too high (in cooling mode).
-Wiring error.
-Pressostat is open (depending on
model).
-Contact the electricity company.
-Change the fuse or rearm the
circuit breaker.
-Find the cause and fix it.
-Replace the defective
components.
-Re-tighten the electrical
connections.
-Change the set temperature.
-Check the wiring.
-Find the cause of the security
alert raised by the pressostat,
solve the problem and rearm it.
The outdoor ventilator is
working but the compressor
is not starting.
-Compressor windings cut or
damaged.
-Defective compressor capacitor
(single phase models).
- Check the wiring and the winding
rate of the compressor.
-Check the state of the condenser
and replace it if necessary.
Insufficient heating or cooling
Lack of refrigerant -Check for leaks -Empty the installation, repair the
leaks, create a vacuum and refill.
Insufficient airflow. - Check the dust filter, check that the
sweep flaps are sufficiently opened,
check whether an air filter is present.
-Check the state and the cleanliness of
the coils.
- Valve capillaries or nozzle obstructed
(damp).
-Liquid or gas side insulated together.
-Clean or replace the filters; position
the air weep flaps correctly.
-Clean the coils.
- Empty the installation, create a
vacuum and refill.
- Insulate connections separately.
The system is operating for excessively long periods
The compressor is not
stopping.
-Set temperature too low (in cooling
operation) or too high (in heating
operation).
-Obstruction in air circulation.
-Insufficient quantity of refrigerant,
leaks.
-Heat load underestimated.
-Air or incondensable gases in the
circuit.
-Change the set temperature.
-Check the air circulation in the
indoor and outdoor unit(s).
-Empty the installation, repair the
leaks, create a vacuum and refill.
- Reduce the heat load or replace the
product by a more powerful one.
- Empty the installation, create a
vacuum and refill.

080505-NIN-SQ-EN 16/24 EN
Operating the unit on short cycle
The compressor is starting
but its thermal protection is
operating incorrectly.
-Too much or too little refrigerant,
incondensable air or gas in the circuit.
-Defective compressor capacitor (single
phase models).
-Voltage too low or too high.
-Flare connections are crushed or
compressed.
- Valve capillaries or nozzle obstructed
(damp).
-Insufficient air circulation.
-Inversion valve damaged or blocked
mid-way (reversible models).
-Empty the installation, repair the
leaks, create a vacuum and refill.
-Determine the exact cause and
change the compressor.
-Change the capacitor.
-Fix the power supply problem.
-Locate and fix the crushed sections.
- Empty the installation, create a
vacuum and refill.
-Clean the coils and the filters, check
that the fan motors are functioning
correctly.
-Change the inversion valve.
Indoor coil iced up
Evaporation pressure too
weak.
- Lack of cooling fluid, leakage.
-Insufficient air circulation.
- Lowest temperature limit in cooling
mode exceeded.
-Empty the installation, repair the
leaks, create a vacuum and refill.
-Clean the coils and the filters,
check the fan motors are
functioning correctly, position the air
vents correctly.
-Install a low temperature kit.
Unit noisy
Faulty installation -Check that anti-vibration blocks are
installed and tubes are correctly fixed
into place.
-Re-tighten the fixings and fit anti-
vibration blocks if absent.
Compressor noisy -Check whether the compressor is
leaking oil.
-Excess of refrigerant.
-Repair leak and top up the oil.
-Remove excess refrigerant.
Insufficient or excessive condensation pressure
Excessive high pressure -Coil is clogged.
-Indoor unit fan (heating mode) or
outdoor unit fan (cooling mode) faulty.
-Too much refrigerant
-Presence of air or non-condensable
gas.
-Liquid side blocked or crushed.
-Clean the coil.
-Change the ventilator.
- Remove excess refrigerant.
- Empty the installation, create a
vacuum and refill.
- Fix the blockage or crushed
section.
Insufficiently high pressure -Too little refrigerant, leaks.
-Compressor valves are worn.
-Empty the installation, repair the
leaks, create a vacuum and refill.
-Replace the compressor.
Excessive or insufficient evaporation pressure
Excessive evaporation
pressure
-Too much refrigerant
-Cycle inversion valve is faulty or
leaking (reversible product).
-Remove the excess fluid.
-Change the valve.
- Insufficient evaporation
pressure
-Too little refrigerant, leaks.
-Indoor unit coil (cooling mode) or
outdoor unit coil (heating mode) iced
up.
-Insufficient airflow in indoor unit
(cooling mode) or in outdoor unit
(heating mode).
-Liquid side blocked or crushed.
- Valve capillaries or nozzle obstructed
-Empty the installation, repair the
leaks if necessary, create a vacuum
and refill.
- Find the cause and fix it.
-Check that the ventilator is working
correctly.
-Remove the blockage or fix the
crushed section.
- Empty the installation, create a
8- DIAGNOSIS (flashing LED s)
Error indication OPERATION
LAMP
TIMER
LAMP
DEFROSTING
LAMP
Indoor fan can’t start after 1 minutes   
Evaporator temp sensor fault   
Over current on the compressor more than 4 times   
EEPROM fault ON  
Indoor main PCB fault   
Room temperature sensor fault   
 Flashing at 0.5s / 0.5s
 Switched off
ON LED is light

080505-NIN-SQ-EN 17/24 EN
9- SPECIFICATIONS
¾DIMENSIONS FOR INDOOR UNIT FIXING SUPPORTS
1- Eyelet-type fixing supports (models 7, 9, 12)
Modèles A
7000 Btu/h 750 mm
9000 Btu/h 750 mm
12 000 Btu/h 790 mm
2- Eyelet-type fixing supports (model 18)
¾BETWEEN THE SUPPORT BLOCKS FOR OUTDOOR UNITS

080505-NIN-SQ-EN 18/24 EN
¾CLEARANCE FOR OUTDOOR UNITS
-30cm lateral on coil side and 30 cm at the back. (If there is no obstacle in the other directions, then this
distance can be reduced to 15 centimeters).
-60cm lateral on service valve side and above.
-200cm on front face.
-10cm below fixing the unit onto the blocks (not provided).
Note: in some very cold geographical locations, the clearance below should be 20cm.
Plus” = more than
¾CLEARANCE FOR INDOOR UNITS
- The clearance to the right, the left and above the indoor unit must be more than 15cm.
-The indoor unit must be installed at a minimum height of 2.3m from the ground.

080505-NIN-SQ-EN 19/24 EN
¾Technical data

080505-NIN-SQ-EN 20/24 EN
¾Technical data