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8.2 Before Contact
Refer to the information below before contacting a contractor.
Trouble Check Point Action
Operation Unavailable
Check that the main power
source is turned ON.
Turn ON the main power source for the air
conditioner.
Check that the fuse is not
blown out or the circuit
breaker of the main power
source tripped.
Replace the fuse or reset the circuit breaker.
If the trouble recurs, contact your contractor or
distributor.
Immediate
Shutdown after
Start-up
Cooling
Check that the air inlet and
outlet of the outdoor unit are
not covered with paper, vinyl
or other objects.
Remove objects covering the air inlet and outlet.
Heating
Check for any obstacles
preventing the air ow near
the air inlet and outlet of the
outdoor unit.
Remove the obstacles preventing the air ow.
Check that the outlet air is not
short-circuited to the air inlet.
Insufcient Cooling or
Heating
Check that the operation
mode is correct.
If the fan mode is selected, switch the operation
mode to cooling or heating.
Check that the set
temperature is correct.
If not, change the set temperature by pressing “
”
or “
” by the wired controller.
Check that the air ow
direction is correct.
If not, change the air ow direction.
In the case that the footing is not heated well during
the heating operation, change the louver downward.
Check that the air lter is not
clogged.
Clean the air lter.
Check that a window or a door
is not opened.
Close the window or the door.
Check for any obstacles
preventing the air ow near
the air inlet and outlet of the
indoor and outdoor units.
Remove the obstacles.
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