8 Troubleshooting
Installation and operation manual
12
FXHQ-A
VRV system air conditioner
3P668115-3E – 2022.11
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).
9
Relocation
Contact your dealer to remove and reinstall the entire unit. Moving
units requires technical expertise.
10
Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
For the installer
11
About the box
11.1
Indoor unit
11.1.1
To remove the accessories from the
indoor unit
1×
1×
1×
8×
7×
1×
4×
1×
1×
1×
1×
2×
2×
c
a
b
1×
1×
j
l
k
m
n
o
f
g
d
e
h
i
a
General safety precautions
b
Indoor unit installation and operation manual
c
Paper pattern for installation (part of the packing)
d
Drain hose
e
Metal clamp
f
Washer for hanger bracket
g
Tie wraps
h
Insulation piece: Large (gas pipe)
i
Insulation piece: Small (liquid pipe)
j
Large sealing pad
k
Sealing material for gaps around pipes and cables
l
Small sealing pad
m
Resin bushing
n
Wiring fixture
o
Screw for wiring fixture
12
Unit installation
12.1
Preparing the installation site
12.1.1
Installation site requirements of the
indoor unit
INFORMATION
The sound pressure level is less than 70 dBA.
CAUTION
Appliance NOT accessible to the general public, install it in
a secured area, protected from easy access.
This unit, both indoor and outdoor, is suitable for
installation
in
a
commercial
and
light
industrial
environment.
▪
Paper pattern for installation
(accessory). Use the paper pattern
when selecting the installation location. It contains the dimensions
of the unit and the locations of suspension bolts, piping outlet,
drain piping outlet and electric wiring inlet.
▪
Spacing
. Mind the following requirements:
Minimum distance to the wall
: 30 mm left and right of the unit,
however, ≥200 mm is recommended for easier servicing.
