7 Maintenance and service
Installation and operation manual
12
FXMA-A
VRV system air conditioner
3P688304-1 – 2022.03
1
Remove the air filter
(composed of 3 equal parts). For the
removal procedure 8 mm pre-filter refer to the reference guide
of the indoor unit. For other air filter types refer to the
installation manual of the filter chamber.
2
Clean the air filter.
Use a vacuum cleaner or wash with water.
If the air filter is very dirty, use a soft brush and neutral
detergent.
3
Dry the air filter in the shadow.
4
Re-attach the air filter.
5
Turn ON the power.
6
To remove warning screens, see the reference guide of the
user interface.
7.2.2
To clean the air outlet
WARNING
Do NOT let the indoor unit get wet.
Possible
consequence:
Electrical shock or fire.
Clean with a soft cloth. If it is difficult to remove stains, use water or
a neutral detergent.
7.3
About the refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R32
Global warming potential (GWP) value: 675
Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Please contact your installer
for more information.
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Please contact your installer for more information.
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
WARNING
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
▪ The refrigerant inside the unit is mildly flammable, but
normally does NOT leak. If the refrigerant leaks in the
room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the
formation of a harmful gas.
▪ Turn OFF any combustible heating devices, ventilate
the room, and contact the dealer where you purchased
the unit.
▪ Do NOT use the unit until a service person confirms
that the part from which the refrigerant leaked has been
repaired.
7.3.1
About the refrigerant leakage sensor
WARNING
The R32 refrigerant leakage sensor must be replaced after
every detection or at the end of its lifetime. ONLY
authorised persons may replace the sensor.
NOTICE
Functionality of the safety measures are periodically
automatically checked. In case of malfunction, an error
code will be displayed on the user interface.
NOTICE
The R32 refrigerant leakage sensor is a semiconductor
detector which may incorrectly detect substances other
than R32 refrigerant. Avoid using chemical substances
(e.g. organic solvents, hair spray, paint) in high
concentrations, in the close proximity of the indoor unit
because this may cause misdetection of the R32
refrigerant leakage sensor.
INFORMATION
The sensor has a lifetime of 10 years. The user interface
displays error "
CH-05
" 6 months before the end of the
sensor lifetime and error "
CH-02
" after the end of the
sensor lifetime. For more information, refer to the reference
guide of the user interface and contact your dealer.
In case of detection when the unit is in standby
When the detection occurs when the unit is in standby, a "false
detection check" will occur.
False detection check
1
The unit starts fan operation on the lowest setting.
2
The user interface displays error "
A0-13
", emits an alarm sound
and the status indicator blinks.
3
The sensor checks if a refrigerant leakage or misdetection
occurred.
▪ No refrigerant leakage detected.
Result:
The system resumes
normal operation after approximately 2 minutes.
▪ Refrigerant leakage detected.
Result:
1
The user interface displays error "
A0-11
", emits an alarm sound
and the status indicator blinks.
