En-12
OPERATING MANUAL
WARNING
In following events, immediately stop operation of the air conditioner, and disconnect all the power supply by turning off the electrical
breaker or disconnecting the power plug. Then consult your dealer or authorized service personnel.
As long as the unit is connected to the power supply, it is not insulated from the power supply even if the unit is turned off.
• Unit smells of something burning or emits smoke
• Water leaks from the unit
Following symptoms do not indicate product malfunction, but they are normal functions or characteristics of this product.
Symptom
Cause
See page
Operation is delayed after
restart.
To prevent blowout of the fuse, the compressor will not operate while the protection circuit is working
for about 3 minutes after sudden OFF→ON operation of the power supply.
–
Noise is heard.
During operation or immediately after stopping the air conditioner, refrigerant flowing sound may be
heard. Also it may be particularly noticeable for 2–3 minutes after starting operation.
–
During the operation, a slight squeaking sound produced by the minute expansion and contraction of
the front panel caused by temperature change may be heard.
Smell coming from the unit.
Various smells generated from interior textile, furniture, or cigarette smoke absorbed into the air
conditioner may be emitted.
–
Mist or steam is emitted from
the unit.
In COOL or DRY mode, a thin mist generated by condensation formed with sudden cooling process
may be emitted.
–
Airflow is weak or stops.
In DRY mode, the indoor unit operates at low fan speed to adjust the room humidity, and may stop
from time to time.
–
When the fan speed is set to “QUIET”, the fan rotates at very low speed and the airflow is reduced.
–
In COOL mode, the indoor unit fan may stop from time to time when the outdoor unit is stopped.
When monitoring operation is performed in AUTO mode, the fan rotates at very low speed.
–
Before you call for or request servicing, troubleshoot a problem by performing following checks:
Symptom
Diagnostic
See page
Does not operate at all.
Has the circuit breaker been turned off?
Has there been a power outage?
Has a fuse blown out or the circuit breaker been tripped?
–
Is the timer operating?
Poor cooling performance.
Is the air filter dirty?
Is the intake grill or outlet port of indoor unit blocked?
–
Is the room temperature adjusted appropriately?
Is a window or door left opened?
Is direct or strong sunlight shinning into the room in cooling operation?
Are there other heating apparatus or computers operating, or too many people in the room in cool-
ing operation?
–
Is the fan speed set to “QUIET”?
When the fan speed setting is set to “QUIET”, noise reduction is prioritized and the air-conditioning
performance may become lower. If the volume of provided airflow is not agreeable to your prefer-
ence, set the fan speed to “LOW” or higher fan speed.
Has the OUTDOOR UNIT LOW NOISE mode been set?
Do you have an arrangement with your electric company for Demand Response?
The unit operates differently
from the remote controller
setting.
Are the batteries used in the remote controller exhausted?
Are the batteries used in the remote controller loaded properly?
Immediately stop operation and turn off the electrical breaker in following cases. Then consult authorized service personnel.
• The problem persists even if you perform these checks or diagnostics.
• The OPERATION indicator and TIMER indicator blink while the ECONOMY indicator is blinking fast.
Troubleshooting
