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TROUBLESHOOTING
CHECK
Doesn't operate at all :
ONCE 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 the TIMER Indicator
Lamp (Fig. 3, y) flashes, immediately stop operation, disconnect the Power Supply Plug (Fig. 1 !3 ) and consult
authorized service personnel.
OPERATING TIPS
Cleaning the Air Filter
About the SLEEP Timer
• 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 insufficient
heating performance is being produced, we rec-
ommend you use this air conditioner in conjunc-
tion with another kind of heating appliance.
• Heat-pump air conditioners heat your entire room
by recirculating air throughout the room, with the
result that some time may be required after first
starting the air conditioner until the room is heated.
Microcomputer-controlled Automatic Defrosting
• When using the Heating mode under conditions
of low outdoor air temperature and high humidity,
frost may form on the outdoor unit, resulting in
reduced operating performance.
In order to prevent this kind of reduced perfor-
mance, this unit is equipped with a
Microcomputer-controlled Automatic Defrosting
function. If frost forms, the air conditioner will
Symptom
• Is the Power Supply Plug disconnected from its outlet?
• Has there been a power failure?
• Has a fuse blown out, or a circuit breaker been tripped?
• Is the POWER switch set to the OFF position?
• Is the timer operating?
• Is the air filter dirty?
• Are the air conditioner's intake grille or outlet port blocked?
• Did you adjust the room temperature settings (thermostat)
• Is there a window or door open?
• In the case of Cooling operation, is a window allowing
• In the case of Cooling operation, are there heating appara-
• Is the unit set for SUPER QUIET operation?
• Are the Remote Control Unit's batteries dead?
• Are the Remote control Unit's batteries loaded properly?
Problem
correctly?
bright sunlight to enter? (Close the curtains.)
tus and computers inside the room, or are there too many
people in the room?
temporarily stop, and the defrosting circuit will
operate briefly (for about 7 to 15 minutes).
During Automatic Defrosting operation, the
OPERATION indicator lamp (red) will flash.
In Event of Power Interruption
Auto Restart
• 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 settings before the power failure.
Then, the Air Flow Direction Louvers will auto-
matically change to their standard direction.
• 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 (green) will flash (see page 59).
• Use of other electrical appliances (electric
shaver, etc.) or nearby use of a wireless radio
transmitter may cause the air conditioner to mal-
function. In this event, temporarily disconnect the
Power Supply Plug, reconnect it, and then use
the Remote Control Unit to resume operation.
– 70 –
See Page
–––––
60
63 – 64
–––––
61
60
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