U-5~48MX3 + U-8~48ME3XPQ
Urban Multi air conditioner
4PW16236-1
Operation manual
5
6.5.
Precautions for group control system or two
remote controller control system
This system provides two other control systems beside individual
control (one remote controller controls one indoor unit) system.
Confirm the following if your unit is of the following control system
type.
■
Group control system
One remote controller controls up to 16 indoor units. All indoor
units are equally set.
■
Two remote controller control system
Two remote controllers control one indoor unit (in case of group
control system, one group of indoor units). The unit is
individually operated.
7.
O
PTIMUM
OPERATION
Observe the following precautions to ensure the system operates
properly.
■
Adjust the air outlet properly and avoid direct air flow to room
inhabitants.
■
Adjust the room temperature properly for a comfortable environ-
ment. Avoid excessive heating or cooling.
■
Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
■
Ventilate often.
Extended use requires special attention to ventilation.
■
Keep doors and windows closed. If the doors and windows
remain open, air will flow out of your room causing a decrease in
the cooling or heating effect.
■
Never place objects near the air inlet or the air outlet of the unit.
It may cause deterioration in the effect or stop the operation.
■
Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it uses
electricity. Before restarting the unit, turn on the main power
supply switch 6 hours before operation to ensure smooth
running. (Refer to "Maintenance" in the indoor unit manual.)
■
When the display shows
(time to clean the air filter), ask a
qualified service person to clean the filters. (Refer to
"Maintenance" in the indoor unit manual.)
■
Keep the indoor unit and remote control at least 1 m away from
televisions, radios, stereos, and other similar equipment.
Failing to do so may cause static or distorted pictures.
■
Do not place items under the indoor unit which may be damaged
by water.
Condensation may form if the humidity is above 80% or if the
drain outlet gets blocked.
8.
F
OLLOWING
SYMPTOMS
ARE
NOT
AIR
CONDITIONER
TROUBLES
Symptom 1: The system does not operate
■
The air conditioner does not start immediately after the ON/OFF
button on the remote controller is pushed.
If the operation lamp lights, the system is in normal condition.
To prevent overloading of the compressor motor, the air
conditioner starts 5 minutes after it is turned ON again in case it
was turned OFF just before. The same starting delay occurs
after the operation mode selector button was used.
■
If “Centralized Control” is displayed on the remote control and
pressing the operation button causes the display to blink for a
few seconds.
This indicates that the central device is controlling the unit.
The blinking display indicates that the remote control cannot be
used.
■
The system does not start immediately after the power supply is
turned on.
Wait one minute until the micro computer is prepared for
operation.
Symptom 2: Cool/Heat cannot be changed over
■
When the display shows “
” (change-over under
centralized control), it shows that this is a slave remote
controller.
■
When the cool/heat changeover remote control switch is
installed and the display shows “
” (change-over under
centralized control).
This is because cool/heat changeover is controlled by the cool/
heat changeover remote control switch. Ask your dealer where
the remote control switch is installed.
Symptom 3: Fan operation is possible, but cooling and heating do not
work.
■
Immediately after the power is turned on.
The micro computer is getting ready to operate. Wait 10
minutes.
Symptom 4: The fan strength does not correspond to the setting.
■
The fan strength does no change even if the fan strength
adjustment button in pressed.
During heating operation, when the room temperature reaches
the set temperature, the outdoor unit goes off and the indoor unit
changes to whisper fan strength.
This is to prevent cold air blowing directly on occupants of the
room.
The fan strength will not change even if the button is changed,
when another indoor unit is in heating operation.
Symptom 5: The fan direction does not correspond to the setting
■
The fan direction does not correspond to the remote control
display. The fan direction does not swing.
This is because the unit is being controlled by the micro
computer.
NOTE
Contact your dealer in case of changing the
combination or setting of group control and two remote
controller control systems.
