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TROUBLESHOOTING
Symptom
CHECK ONCE
Doesn't operate at all:
MORE
Poor Cooling (or heating)
performance:
The unit operates
differently from the Remote
Control Unit's setting:
If the problem persists after performing these checks, or if you notice burning smells, or both the ORERATION Indicator Lamp
(Fig. 3 a5) and the TIMER Indicator Lamp (Fig. 3 a6) fl ashes, or only the TIMER Indicator Lamp (Fig. 3 a6) fl ashes, immediately stop
operation, turn off the electrical breaker, and consult authorized service personnel.
OPERATING TIPS
Operation and Performance
Heating Performance
● This air conditioner operates on the heat-pump principle,
absorbing heat from outdoor air and transferring that heat
indoors. As a result, the operating performance is reduced
as outdoor air temperature drops. If you feel that insuffi cient
heating performance is being produced, we recommend
you use this air conditioner in conjunction with another kind
of heating appliance.
● Heat-pump air conditioners heat your entire room by recir-
culating air throughout the room, with the result that some
time may be required after fi rst starting the air conditioner
until the room is heated.
AUTO Restart
In Event of Power Interruption
● The air conditioner power has been interrupted by a power
failure. The air conditioner will then restart automatically in
its previous mode when the power is restored.
● Operated by setting before the power failure.
Items to check
● Is the Power Supply Plug disconnected its outlet?
● Has there been a power failure?
● Has a fuse blown out, or a circuit breaker been tripped?
● Is the timer operating?
● Is the Air Filter dirty?
● Air the air conditioner's intake grille or outlet port blocked?
● Did you adjust the room temperature settings (thermostat) correctly?
● Is there a window or door open?
● In the case of Cooling operation, is a window allowing bright sunlight
to enter? (Close the curtains.)
● In the case of Cooling operation, are there heating apparatus and
computers inside the room, or are there too many people in the
room?
● Is the unit set for SUPER QUIET operation?
● Are the Remote Controller's batteries dead?
● Are the Remote Controller's batteries loaded properly?
Microcomputer-controlled Automatic Defrosting
● When using the Heating mode under conditions of low out-
door temperature and high humidity, frost may form on the
outdoor unit, resulting in reduced operating performance.
In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Automatic
Defrosting function. If frost forms, the air conditioner will
temporarily stop, and the defrosting circuit will operate brief-
ly (Max. 15 minutes).
During Automatic Defrosting operation, the OPERATION
Indicator Lamp will fl ash.
● After heating operation stops, if frost forms on the outdoor
unit, the unit will start Automatic Defrosting operation. At
this time, the outdoor unit will automatically stop after oper-
ating for a few minutes.
● If a power failure occurs during TIMER operation, the timer will
be reset and the unit will begin (or stop) operation at the new
time setting. In the event that this kind of timer fault occurs the
TIMER Indicator Lamp will fl ash (see Page. 4).
● Use of other electrical appliances (electric shaver, etc.) or
nearby use of a wireless radio transmitter may cause the air
conditioner to malfunction. In this event, temporarily turn off
the circuit breaker, turn it on and then use the Remote Con-
troller to resume operation.
See Page
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6
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En-16
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