14 Troubleshooting
Installation and operation manual
16
FXFQ20~125BVEB
VRV system air conditioner
4P540926-1B – 2019.01
1
2
3
4
Clean the suction grille. Wash with a soft bristle brush, and
water or neutral detergent. If the suction grille is very dirty, use
a typical kitchen cleaner, leave it on for 10 min, then wash it
with water.
5
Reattach the air filter and suction grille, and close the suction
grille.
13.2.3
To clean the air outlet and outside panels
WARNING
Do NOT let the indoor unit get wet.
Possible
consequence:
Electric shock or fire.
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.
▪ Do NOT scrub firmly when washing the blade with
water.
Possible consequence:
The surface sealing
peels off.
Clean with a soft cloth. If it is difficult to remove stains, use water or
neutral detergent.
13.3
Maintenance after a long stop
period
E.g., at the beginning of the season.
▪ Check and remove everything that might be blocking inlet and
outlet vents of indoor units and outdoor units.
▪ Clean air filters and casings of indoor units (see
"13.2.1 To clean
the air filter" on page 15
and
"13.2.3 To clean the air outlet and
outside panels" on page 16
).
▪ Turn on the power at least 6 hours before operating the unit in
order to ensure smoother operation. As soon as the power is
turned on, the user interface display appears.
13.4
Maintenance before a long stop
period
E.g., at the end of the season.
▪ Let the indoor units run in fan only operation for about half a day in
order to dry the interior of the units. Refer to
"12.1.2 About
cooling, heating, fan only, and automatic operation" on page 13
for details on fan only operation.
▪ Turn off the power. The user interface display disappears.
▪ Clean air filters and casings of indoor units (see
"13.2.1 To clean
the air filter" on page 15
and
"13.2.3 To clean the air outlet and
outside panels" on page 16
).
13.5
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 CO2 equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Please 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.
14
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, electric 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
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT properly work.
Turn OFF the main power
switch.
If water leaks from the unit.
Stop the operation.
The operation switch does NOT work
well.
Turn OFF the power
supply.
If the user interface display indicates the
unit number, the operation lamp flashes
and the malfunction code appears.
Notify your installer and
report the malfunction
code.
If the system does NOT properly operate except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
INFORMATION
Refer to the user reference guide located on
http://
www.daikineurope.com/support-and-manuals/product-
information/
for more troubleshooting tips.
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).
