T R O U B LE SHOOT I N G T I PS
T R O U B LE S H OO T I N G T I PS
Troubleshooting guide
If the problem persists even if you perform these checks or diagnostics, immediately stop operation
and contact the authorized service center. Be sure to inform them of the detailed malfunctions and
unit model number.
DO NOT ATTEMPT TO CORRECT THESE ITEMS YOURSELF!
CONTACT A AUTHORIZED SERVICE PROVIDER!
Before you call for or request servicing, troubleshoot a problem by performing following checks:
In the case of ANY of the following, turn off the unit immediately!
Unit will not operate
Poor cooling or
heating performance
Indicator lamps
continue flashing
Error code appears
in the indoor unit,
such as: E0,E1,E2....
P1,P2,P3.....or F1, F2,
F3.....
-- Is there a power failure?
-- Has a switch been turned off, a circuit breaker tripped or a fuse blown?
-- Power cord is damaged or abnormally warm.
-- Burning odous are smelled.
-- Loud or abnormal sounds are heard.
-- A power fuse blows or a circuit breaker trips frequently.
-- Water or other objects fall into or out of the unit.
-- Is the timer operating?
-- Are the batteries used in the remote controller exhausted?
-- Are the batteries used in the remote controller loaded properly?
-- Are the air filters dirty?
-- Is air flow unrestricted in & out of indoor & outdoor units?
-- Are the temperature and mode settings correct?
-- Are the windows or doors left opened?
-- Is fan speed on high and louvers allowing maximum flow?
-- Is direct or strong sunlight shinning into the room in cooling operation?
-- Is the SILENCE function is activated? Under SILENCE operation,
noise reduction is prioritized and the air-conditioning performance may
become lower.
-- The unit may stop operation or continue to run in a safety condition
(depending on models). Waiting for about 10 minutes, the fault may be
recovered automatically, if not, disconnect the power and then connect it
in again. If the problem still exists, disconnect the power and contact the
nearest customer service center.
-- Are there other heating apparatus or computers operating, or too many
people in the room in cooling operation?
Symptom
Diagnostic
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CAUTION
The following events may occur during normal operation, and may not indicate malfunction.
Troubleshooting tips
Operation is delayed
after restart
Fan speed changes-
off, very slow and
then normal
Heating operation
stops suddenly and
defrost-light blinks
Mist coming out of
the indoor unit
Low volume sounds
are emitted by the
air conditioner
Dust discharges from
the unit
Emits a peculiar
odour
Changes to fan only
while cooling or
heating mode
Operation is erratic,
unpredictable or
unresponsive
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.
In HEAT mode, the indoor unit temporarily stops for maximum of 10
minutes to perform the automatic defrosting operation.
May occur when air conditioner is used for the first time or has not been
used for a long time.
Various smells generated from interior textile, furniture, or cigarette smoke
absorbed into the air conditioner may be emitted. If not the case call your
suitable contractor.
Room temperature reaches the temperature setting of the remote control.
If not the case call your suitable contractor.
Interference from cell phone towers and remote boosters may cause the
unit to malfunction
Disconnect the power and then re-connect.
Press the ON/OFF button on the remote controller to restart operation.
Automatically happens in heating mode :
--prevents cold air blowing onto occupants when the heating operation is
start,
--perform automatic defrosting operation,
--perform low temperature heating operation
NOTE:
If the problem is not resolved, please contact a local dealer or the nearest customer
service center. Be sure to inform them of the detailed malfunctions and unit model number.
In COOL mode, a mist generated by condensation formed with sudden
cooling process may be emitted.
Hissing sound-- during operation or immediately after stopping the air
conditioner, refrigerant flowing sound may be head.
Squeaking sound-- normal expansion and contraction of plastic and metal
parts caused by temperature change during the operation.
Rushing air-- when louver resets its position.
Mist may generate due to moisture generated from defrosting process
when the air conditioner restarts in HEAT mode operation after defrosting.
Symptom
Cause
