11 User interface
Installation and operation manual
12
250AXVEB
Split system air conditioners
3P580564-1 – 2019.04
10.1
Components
INFORMATION
The following illustration is an example and might NOT
match your system layout.
b
k
i
j
g/h
c
d
a
l
e
f
a
Discharge grille (field supply)
b
Exhaust duct (field supply)
c
Drain pipe
d
Refrigerant piping
e
Interconnection wiring
f
User interface (option)
g
Filter cover
h
Air filter
i
Suction filter chamber (option)
j
Suction duct (field supply)
k
Machine nameplate
l
Suction grille (field supply)
CAUTION
Do NOT insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it will
cause injury.
11
User interface
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
NOTICE
Do NOT wipe the controller operation panel with benzine,
thinner, chemical dust cloth, etc. The panel may get
discoloured or the coating peeled off. If it is heavily dirty,
soak a cloth in water-diluted neutral detergent, squeeze it
well and wipe the panel clean. Wipe it with another dry
cloth.
NOTICE
NEVER press the button of the user interface with a hard,
pointed object. The user interface may be damaged.
NOTICE
NEVER pull or twist the electric wire of the user interface. It
may cause the unit to malfunction.
This operation manual offers a non-exhaustive overview of the main
functions of the system.
For more information about the user interface, see the operation
manual of the installed user interface.
12
Operation
12.1
Operation range
For combination with R410A outdoor unit, refer to the following table:
Outdoor units
Cooling
Heating
250
Outdoor
temperature
–5~46°C DB
–15~15°C WB
Indoor
temperature
14~28°C WB
10~27°C DB
Indoor humidity
≤80%
(a)
For combination with R32 outdoor unit, refer to the following table:
Outdoor units
Cooling
Heating
250
Outdoor
temperature
–15~46°C DB
–15~15°C WB
Indoor
temperature
14~28°C WB
10~27°C DB
Indoor humidity
≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If
the temperature or the humidity is beyond these conditions,
safety devices may be activated and the air conditioner
may not operate.
DB:
Dry bulb
WB:
Wet bulb
12.2
Operation procedure
▪ 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.
▪ If there was a power failure during operation, the system
automatically restarts immediately after the power supply is
recovered.
▪ The setting temperature range of the user interface is described in
chapter "Operation range".
▪ Read the documentation carefully before operating the user
interface to ensure the best possible performance.
13
Maintenance and service
13.1
Overview: Maintenance and
service
NOTICE
Maintenance MUST be done by an authorized installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
NOTICE
Never inspect or service the unit by yourself. Ask a
qualified service person to perform this work. However, as
end user, you may clean the air filter, suction grille, air
outlet and outside panels.
CAUTION
Before accessing terminal devices, make sure to interrupt
all power supply.
