En-18
TROUBLESHOOTING
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.
Symptom Problem
See Page
NORMAL
FUNCTION
The damper opens and
closes automatically
●
The damper is automatically controlled by a microcomputer accord-
ing to the airfl ow temperature and operation time of the air condi-
tioner.
—
Symptom Items to check
See Page
CHECK ONCE
MORE
Doesn’t operate at all:
●
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? 8–9
Poor Cooling (or Heating)
performance:
●
Is the Air Filter dirty?
●
Air 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?
●
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? 7
The unit operates
differently from the Remote
Controller’s setting:
●
Are the Remote Controller’s batteries dead?
●
Are the Remote Controller’s batteries loaded properly?
6
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 recommend
you use this air conditioner in conjunction with another kind
of heating appliance.
●
Heat-pump air conditioners heat your entire room by recir-
culating air throughout the room, with the result that some
time may be required after fi rst starting the air conditioner
until the room is heated.
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 brief-
ly (for about 7-15 minutes).
During Automatic Defrosting operation, the OPERATION
Indicator Lamp (green) will fl ash.
●
After heating operation stops, if frost forms on the outdoor
unit, the unit will start Automatic Defrosting operation. At
this time, the outdoor unit will automatically stop after oper-
ating for a few minutes.
(However, some type of multi-type air conditioner doesn't
provide this function.)
9378532045_OM.indb 189378532045_OM.indb 18 9/28/2011 4:21:46 PM9/28/2011 4:21:46 PM
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