Operating Tips - Fujitsu ASU9D Operating Manual

TROUBLESHOOTING
Symptom
Items to check See Page
CHECK ONCE
MORE
Doesn't operate at all:
• 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?
6
• Is the timer operating? 9 to 10
Poor Cooling (or Heating)
performance:
• Is the air filter dirty?
• Are the air conditioner's intake grille or outlet port blocked?
• Did you adjust the room temperature settings (thermostat) cor¬
rectly?
• Is there a window or door open?
• In the case of Cooling operation, is a window allowing bright sun¬
light 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? 7
The unit operates
differently from the
remote control unit's
setting:
• Are the Remote Control Unit's batteries dead?
• Are the Remote Control Unit's batteries loaded properly?
6
If the problem persists after performing these checks, or if you notice burning smells, or the
WARNING
! TIMER indicator Lamp (Fig. 3 ®) flashes, immediately stop operation, disconnect the Power 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 recom¬
mend you use this air conditioner in conjunction 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 con¬
ditioner until the room is heated.
Microcomputer-controlled Automatic Defrosting
• When using the Heating mode under conditions of low
outdoor air temperature high humidity, frost may form
on the outdoor unit, resulting in reduced operating per¬
formance.
In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Auto¬
matic Defrosting function. If frost forms, the air condi¬
tioner will 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 setting before the power failure. Then, the Air
Flow Direction Louvers will automatically be restored to the
direction before the power failure.
En-17
• 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. 5).
• 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
disconnect the Power, reconnect it, and then use the re¬
mote control unit to resume operation.