9
!
The system does not restart immediately when
the TEMPERATURE SETTING button is
returned to its former position after pushing.
If the OPERATION lamp lights, the system is in its
normal operating condition.
It may not restart immediately because one of its
safety devices has actuated to prevent the system
from being overloaded. The system will turn on
again automatically after the passage of three
minutes.
!
The system does not start when the display
shows “ “ (UNDER CENTRALIZED
CONTROL) and it flashes for few seconds after
pressing an operation button.
This is because the system is under centralized
control. Flashes on the display indicates that the
system cannot be controlled by the remote
controller.
!
The system does not start immediately after the
power supply is turned on.
Wait one minute until the micro computer is
prepared for operation.
!
The outdoor unit is stopped.
This is because the room temperature has
reached the set temperature. The indoor unit
switches to fan operation.
WHITE MIST COMES OUT OF THE OUTDOOR UNIT
!
When the system reverts to HEATING
OPERATION after DEFROST OPERATION.
Moisture generated by DEFROST becomes steam
and is discharged.
The following symptoms do not indicate that the air
conditioner has malfunctioned.
THE SYSTEM DOES NOT OPERATE
!
The system does not restart immediately after
the ON / OFF button is pressed.
If the OPERATION lamp lights, the system is in its
normal operating condition.
It may not restart immediately because one of its
safety devices has actuated to prevent the system
from being overloaded. The system will turn on
again automatically after the passage of three
minutes.
In the unlikely event that a fault develops with the air
conditioner the microprocessor in the indoor and
outdoor units will diagnose the fault (where possible),
display a unique fault code on the remote controller
(see below) and flash the OPERATION INDICATOR (2)
on and off. If this occurs take a note of the fault code
(eg. A1) and contact your installer. This code will
indicate to the installer / repairer what the problem
may be.
TEST
C
H
UNIT No.
INSPECTION
display
INDOOR UNIT
No. in which a
malfunction occurs
MALFUNCTION CODE
2
Fig. 5
OPERATION RANGE
If the temperature or the humidity is outside the
following conditions, safety devices may work and the
air conditioner may not operate.
Cooling
Indoor
DB
19 to 35
WB
12 to 25
(Humidity 80% or below)
Outdoor
DB
-5 to 46
Heating
Indoor
DB
10 to 27
Outdoor
DB
-9 to 21
WB
-10 to 15
Temperature (
o
C)
-
-
Temperature (
o
C)
DB: Dry bulb temperature
WB: Wet bulb temperature
15.10 Self Diagnosis
15.11 Not Malfunction of the Air
Condtioner
!
Turn off the main power supply switch when not
using for long periods of time. Electricity is
consumed as long as the switch is on. Turn off the
main power supply switch in order to save energy.
Turn on the main power supply switch 6 hours
before restarting operation in order to ensure
smooth operation. (Refer to MAINTENANCE)
!
Ventilate the room regularly.
Using the unit for long periods of time requires
regular ventilation of the room.
!
When the display shows “ “ (TIME TO CLEAN
THE AIR FILTER), clean the filter(s). (Refer to
MAINTENANCE)
