13
TROUBLESHOOTING
Symptom
Smells:
Mist or steam are
emitted:
Airflow is weak or stops:
Water is produced from
the outdoor unit:
The FILTER lamp blinks:
Doesn’t operate at all:
Poor Cooling (or *Heating)
performance:
The unit operates differ-
ently from the Remote
Controller’s setting:
Signal is not received after
replacing the batteries for
the Remote Controller:
Problem
● 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.
● 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.
*● During Heating operation, the outdoor unit’s fan may stop, and
steam may be seen rising from the unit. This is due to the Auto-
matic Defrosting operation.
*● When Heating operation is started, fan speed is temporarily very
low, to allow internal parts to warm up.
*● During Heating operation, if the room temperature rises above
the thermostat setting, the outdoor unit will stop, and the indoor
unit will operate at very low fan speed. If you wish to warm the
room further, set the thermostat to a higher setting.
*● During Heating operation, the unit will temporarily stop opera-
tion (between 7 and 15 minutes) as the Automatic Defrosting mode
operates. During the Automatic Defrosting operation, the OPERA-
TION indicator lamp will flash.
● The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
● In case of Multi-type unit, if multiple units are operated in differ-
ent operation modes as shown below, the units operated after-
ward will stop and
will be shown on the Remote Controller
display of the stopped indoor units.
Heating mode and cooling mode (or dry mode)
Heating mode and fan mode
● During QUIET operation, the fan will operate at very low speed.
● In the monitor AUTO operation, the fan will operate at very low
speed.
*● During Heating operation, water may be produced from the out-
door unit due to the Automatic Defrosting operation.
● Clean the filter. Afterwards, turn the FILTER lamp off.
● Has the circuit breaker been turned 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) 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?
● Is the unit set for QUIET operation?
● Are the Remote Controller’s batteries dead?
● Are the Remote Controller’s batteries loaded properly?
● Are you using an air conditioner signal code other than signal
code A?
See page
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12
NORMAL
FUNCTION
CHECK ONCE
MORE
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator lamp and opera-
tion indicator lamp flashes, stop operation immediately, turn off electric breaker, and consult with authorized
service personnel.
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
9374379286-02_OM_en.p65 2/4/10, 9:21 AM13
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