Operating instructions

En-15
TROUBLESHOOTING
WARNING
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical
breaker or disconnect the power supply, 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 turn off the electrical breaker or disconnect the power supply to ensure that power
is completely off.
Before requesting service, perform the following checks:
Symptom Problem
See
Page
NORMAL
FUNCTION
Doesn’t operate
immediately:
● If the 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 Power Supply is disconnected and then reconnected to a power
outlet, the protection circuit will operate for about 3 minutes, preventing unit
operation during that period.
—
Noise is heard: ● During operation and 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 coolant fl owing).
●
During operation, a slight squeaking sound may be heard. This is the result of minute
expansion and contraction of the front cover due to temperature changes.
—
Smells: ●
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 air conditioner.
—
Mist or steam are
emitted:
● 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 air emitted from the
air conditioner, resulting in condensation and misting.
—
Airfl ow is weak or
stops:
● The fan may operate at very low speed during Dry operation or when the unit is
monitoring the room’s temperature.
6
● During SUPER QUIET operation, the fan will operate at very low speed. 6
● In the monitor AUTO operation, the fan will operate at very low speed. 6
CHECK
ONCE
MORE
Doesn’t operate
at all:
● Is the Power Supply disconnected its outlet?
● 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
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?
—
● Is the unit set for SUPER QUIET operation? 6
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?
5
If the problem persists after performing these checks, or if you notice burning smells, or both the ORERATION Indicator Lamp
[Fig. 4 (4-1)] and the TIMER Indicator Lamp [Fig. 4 (4-2)] fl ashes, or only the TIMER Indicator Lamp [Fig. 4 (4-2)] fl ashes,
immediately stop operation, disconnect the Power Supply, and consult authorized service personnel.
9385989399-02_OM_EN.indd 159385989399-02_OM_EN.indd 15 2019/10/21 15:33:302019/10/21 15:33:30