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Check these items over before contacting a contractor.
8.2 Before Contact
Trouble
Checking Point
Action
Operation Unavailable
Check that the main power
source is turned ON.
Turn ON the power at the main power source for
the air conditioner.
Check that the fuse is not
blown or the circuit breaker
from the main power source is
not tripped.
Replace the fuse or reset the circuit breaker.
If trouble recurs, contact your contractor or
distributor.
Immediate
shutdown after
start-up
Cooling
Check if the air inlet and outlet
for the outdoor unit are not
obstructed.
Remove objects obstructing the air inlet and outlet.
Heating
Check if there are any
obstacles impeding the airflow
near the air inlet and outlet of
the outdoor unit.
Remove any obstacles obstructing airflow.
Check that the outlet air is not
redirected into the air inlet.
Insufficient Cooling or
Heating
Check that the operation
mode is appropriate.
If the fan mode is selected, switch the operation
mode to cooling/heating.
Check that the set
temperature is appropriate.
If not, change the setting temperature by pressing
“ ” or “ ” by the wired controller.
Check that the airflow
direction is appropriate.
If not, change the airflow direction.
In case the footing is not heated well during the
heating operation, change the louver downward.
Check that the air filter is not
clogged.
Clean the air filter.
Verify that there are no open
windows and doorways.
Close windows and doors.
Check that there are no
obstacles impeding airflow
near the air inlet and outlet for
both indoor and outdoor units.
Remove the obstacles.
