14
• The system does not start when the display
shows “
” (UNDER CENTRALIZED
CONTROL) and it flashes for a 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 con-
troller.
• The system does not start immediately after
the power supply is turned on.
Wait at least 5 minute until the micro computer is
prepared for operation.
II. WHITE MIST COMES OUT OF A UNIT
• When humidity is high during cooling opera-
tion. (In oily or dusty places)
If the inside of an indoor unit is extremely contam-
inated, the temperature distribution inside a room
becomes uneven. It is necessary to clean the
inside of the indoor unit. Ask your dealer for
details on cleaning the unit. This operation
requires a qualified service person.
• When the system is changed over to HEATING
OPERATION after DEFROST OPERATION.
Moisture generated by DEFROST becomes
steam and exists.
III.NOISE OF AIR CONDITIONERS
• A ringing sound after the unit is started.
This sound is generated by the temperature reg-
ulator working.
It will quiet down after about a minute.
• A continuous flow “Shuh” sound is heard
when the systems is in COOLING or
DEFROST OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A “Shuh” sound which is heard at the start or
immediately after the stop of operation or
which is heard at the start or immediately after
the stop of DEFROST OPERATION.
This is the noise of refrigerant caused by flow stop
and flow change.
• A continuous low “Shah” sound is heard
when the system is in COOLING OPERATION
or at a stop.
The noise is heard when the drain pump is in
operation.
• A “Pishi-pishi” squeaking sound is heard
when the system is in operation or after the
stop of operation.
Expansion and contraction of plastic parts caused
by temperature change makes this noise.
IV.DUST FROM THE UNITS
• Dust may blow out from the unit after starting
operation from long resting time.
Dust absorbed by the unit blows out.
V. THE UNITS GIVE OFF ODORS
The unit absorbs the smell of rooms, furniture,
cigarettes, etc., and then emits them.
VI.THE LIQUID CRYSTAL OF THE REMOTE CON-
TROLLER SHOW “
”
• It happens immediately after the main power
supply switch is turned on.
This shows that the remote controller is in normal
condition.
This continues temporary.
I. If one of the following malfunctions occurs,
take the measures shown below and contact
your dealer.
The system must be repaired by a qualified service
person.
WARNING
• When the air conditioner is in abnormal condi-
tions (smell of something burning, etc),
unplug the power cord from the outlet, and
contact your dealer
Continued operation under such circumstances
may result in a failure, electric shock, and fire.
•
If a safety device such as a fuse, a breaker or an
earth leakage breaker frequently actuates;
Measure:
Do not turn on the main power switch.
•
If the ON/OFF switch does not properly work;
Measure:
Turn off the main power switch.
•
If water leaks from unit.
Measure:
Stop the operation.
•
If the display “
” (INSPECTION), “UNIT No.”,
and the OPERATION lamp flash and the “MAL-
FUNCTION CODE” appears.
Measure:
Notify your dealer and inform him/her
of the display.
10. TROUBLE SHOOTING
OPERATION lamp
INSPECTION
display
MALFUNCTION
CODE
INDOOR UNIT No. in which a
malfunction occurs
UNIT No.
F
L
H
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