Fujitsu ABY45TL*MA Betriebshandbuch - Seite 24
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TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to "HEAT & COOL MODEL" (Reverse Cycle).
Instructions relating to "the TIMER indicator lamp" (**) are applicable to "CEILING SUSPENSION TYPE" and "FLOOR CON-
SOLE/UNDER CEILING DUAL TYPE".
CHECK ONCE
Doesn't operate at all:
MORE
Poor Cooling (or *Heating)
performance:
If the problem persists after performing these checks, or if you notice burning smells, ** or the TIMER indicator lamp flashes,
stop operation immediately, turn off the electrical breaker, and consult with authorized service personnel.
OPERATING TIPS
Instructions relating to heating (*) are applicable only to "HEAT & COOL MODEL" (Reverse Cycle).
Instructions relating to "the OPERATION indicator lamp" (**) are applicable to "CEILING SUSPENSION TYPE" and "FLOOR
CONSOLE/UNDER CEILING DUAL TYPE".
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.
En-24
Symptom
● Has there been a power failure?
● Has a fuse blown out, or a circuit breaker been tripped?
● Is the main 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) 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?
Items to check
*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
briefly (for about 4 to 15 minutes).
During Automatic Defrosting operation, DEFROST will be
displayed on the remote controller, ** and the OPERATION
indicator lamp (red) will flash.
Low Ambient Cooling
When the outdoor temperature drops, the outdoor unit's fans
may switch to Low Speed, or one of the fans may stop inter-
mittently.
See Page
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9 to 14
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