8 Troubleshooting
Installation and operation manual
10
FXMQ-A
VRV system air conditioner
3P701545-1 – 2022.07
NOTICE
▪ Do NOT use gasoline, benzene, thinner polishing
powder or liquid insecticide.
Possible consequence:
Discoloration and deformation.
▪ Do NOT use water or air of 50°C or higher.
Possible
consequence:
Discoloration and deformation.
7.2.1
To clean the air filter
INFORMATION
Air filter for this unit is an optional equipment. Refer to the
option list for available air filter option for your unit.
When to clean the air filter:
▪ Rule of thumb: Clean every 6 months. If the air in the room is
extremely contaminated, increase the cleaning frequency.
▪ Depending on the settings, the user interface can display the
"Time to clean filter"
notification. Clean the air filter when the
notification displays.
▪ If the dirt becomes impossible to clean, change the air filter
(= optional equipment).
How to clean the air filter:
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: R410A
Global warming potential (GWP) value: 2087.5
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
Contact your installer for more information.
WARNING
▪ The refrigerant in the system is safe and normally does
NOT leak. If the refrigerant leaks in the room, contact
with a fire of a burner, a heater or a cooker may result
in 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 system until a service person confirms
that the portion where the refrigerant leaks is repaired.
8
Troubleshooting
If one of the following malfunctions occur, take the measures shown
below and contact your dealer.
WARNING
Stop operation and shut OFF the power if anything
unusual occurs (burning smells etc.).
Leaving the unit running under such circumstances may
cause breakage, electrical shock or fire. Contact your
dealer.
The system MUST be repaired by a qualified service person.
Malfunction
Measure
If a safety device such as a fuse, a
circuit breaker or a residual current
device frequently actuates or the ON/
OFF switch does NOT function properly.
Turn OFF all main power
supply switches to the
unit.
If water leaks from the unit.
Stop operation.
The operation switch does NOT function
properly.
Turn OFF the power
supply.
If the user interface displays
.
Notify your installer and
report the error code. To
display an error code see
the reference guide of the
user interface.
If the system does NOT operate properly except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system in accordance with the following
procedures.
INFORMATION
Refer to the reference guide located on
for more troubleshooting tips. Use the
search function to find your model.
If after checking all above items, it is impossible to fix the problem
yourself, contact your installer and state the symptoms, the complete
model name of the unit (with manufacturing number if possible) and
the installation date (possibly listed on the warranty card).
Summary of Contents for VRV system FXMQ200AXVMB
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