Operating Tips - Fujitsu ASU9R1 Operating Manual

TROUBLESHOOTING
CHECK ONCE Doesn't operate at all:
MORE
Poor Cooling (or Heating)
performance:
The unit operates
differently from the
remote control unit's
setting:
WARNING!

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 insufficient 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
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.
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 automatically change to
their standard direction.
En-17
Symptom
÷ 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)
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 Control Unit's batteries dead?
÷ Are the Remote Control Unit's batteries loaded properly?
If the problem persists after performing these checks, or if you notice burning smells, or the
TIMER Indicator Lamp (Fig. 3, 6) flashes, immediately stop operation, disconnect the Power
and consult authorized service personnel.
Items to Check
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
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 briefly (for about 7-15 minutes).
During Automatic Defrosting operation, the OPERATION
Indicator Lamp (red) will flash.
÷ 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 Remote Control Unit to resume operation.
See Page
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