Troubleshooting - Fujitsu General ASGA18SEFT Operation Manual

TROUBLESHOOTING

In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the power supply plug or turn off the cir-
cuit breaker, and consult authorized service personnel.
Merely turning off the unit's power switch will not completely disconnect the unit from the power source. Always be sure to discon-
nect the power supply plug or turn off your circuit breaker to ensure that power is completely off.
Before requesting service, perform the following checks:
NORMAL Doesn't operate immedi-
ately:
FUNCTION
Noise is heard:
Smells:
Mist or steam is
emitted:
Airfl ow is weak or stops:
CHECK ONCE Doesn't operate at all:
MORE
Poor Cooling performance:
The unit operates
differently from the Remote
Controller's setting:
If the problem persists after performing these checks, or if you notice burning smells, or both the OPERATION Indicator Lamp (Fig. 3 5)
and the TIMER Indicator Lamp (Fig. 3 6) fl ashes, or only the TIMER Indicator Lamp (Fig.3 7) fl ashes, immediately stop operation,
disconnect the Power Supply, and consult authorized service personnel.
En-15
Symptom
● If the indoor unit is stopped and then immediately started
again, the compressor will not operate for about 3 minutes, in
order to prevent fuse blowouts.
● Whenever the electrical breaker is turned off then on again
the protection circuit will operate for about 3 minutes, pre-
venting unit operation during that period.
● During operation or immediately after stopping the unit, the
sound of water fl owing in the air conditioner's piping may be
heard. Also, noise may be particularly noticeable for about
2 to 3 minutes after starting operation (sound of refrigerant
fl owing).
● During operation, a slight squeaking sound may be heard.
This is the result of minute expansion and contraction of the
front panel due to temperature changes.
● Some smell may be emitted from the indoor unit. This smell
is the result of room smells (furniture, tobacco, etc.) which
have been taken into the indoor unit.
● During Cooling or Dry operation, a thin mist may be seen
emitted from the indoor unit. This results from the sudden
Cooling of room air by the cool air emitted from the indoor
unit, resulting in condensation and misting.
● The fan may operate at very low speed during Dry operation
or when the unit is monitoring the room's temperature.
● During SUPER QUIET operation, the fan will operate at very
low speed.
● In the monitor of AUTO operation, the fan will operate at very
low speed.
● Has the circuit breaker been turn off?
● 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?
● 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 Controller's batteries dead?
● Are the Remote Controller's batteries loaded properly?
WARNING
Problem See Page
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