Fujitsu Inverter Operating Manual page 17

TROUBLESHOOTING
Symptom
NORMAL The damper opens and
FUNCTION closes automatically
Symptom
CHECK ONCE Doesn't operate at all:
MORE
Poor Cooling (or Heating)
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 the OPERATION Indicator Lamp (Fig. 3 6)
and the TIMER Indicator Lamp (Fig. 3 7) fl ashes, and ECONOMY Indicator Lamp (Fig.3 8) fl ashes fast. Immediately stop opera-
tion, turn off the electrical breaker and consult authorized service personnel.
● The damper is automatically controlled by a microcomputer accord-
ing to the airfl ow temperature and operation time of the air condi-
tioner.
Items to check
● 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 (temperature) cor-
rectly?
● 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?
● Make sure the lower air outlet is not choked with foreign matters,
causing abnormal operation to damper.
● Is the unit set for SUPER QUIET operation?
● Are the Remote controller's batteries dead?
● Are the Remote controller's batteries loaded properly?
Problem See Page
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See Page
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8 - 9
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6
5
En-17