trouble
checking point
action
Not operated
Check that the main power source is turned
on.
Turn ON the main power source for air conditioner.
Check that the fuse does not blow out or the
circuit breaker of main power source is not
tripped.
replace the fuse or reset the circuit breaker.
If the trouble recurs, contact your contractor or distributor.
Operated
however,
stopped soon
Cooling
Check whether the air inlet and outlet of the
outdoor unit are not covered by a paper, a vinyl
or other object.
remove objects covering the air inlet and outlet.
Heating
Check whether there are any obstacles for
the air flow near the air inlet and outlet of the
outdoor unit.
remove the obstacles which prevent the air flow.
Check whether the outlet air is short-circuited
to the air inlet.
Not cooling or heating well
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 set temperature by pressing “▲” or “▼” by the
remote control switch.
Check that the air flow direction is appropriate.
If not, change the air flow direction.
In the case that 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.
Check that a window and a door are not
opened.
Close the window and the door.
Check that there are no obstacles for the air
inlet and the air outlet of the outdoor unit and
the indoor unit.
remove the obstacles.
11.1 contact distributor
If the trouble still remains even after checking previous items or other troubles not mentioned in the previous occurs, stop using the
product and contact your distributor or contractor.
!
c a u t i o n
If abnormality (burnt odor, etc.) occurs, stop the operation and turn OFF the main power source immediately. If not, it may cause breakage of the
product, an electric shock or a fire. Contact your distributor or contractor.
trouble
action before contact
The protection devices (fuse, breaker, ELB, etc) are frequently activated
or the main power source switch does not work.
Turn OFF the power source.
Water leakage from indoor unit.
Stop the operation.
The rUN indicator (red) is flashing.
The indoor unit number, the alarm code, the unit model code and the
connected number of indoor units are displayed on LCD.
In case that the plural indoor units are connected to one remote control
switch, the above abnormality informations for each indoor unit are
displayed one by one.
Check the details on LCD and contact your distributor.
refer the alarm code table.
Contact your distributor and inform the indication detail on the remote
control switch.
Inform the following items to a distributor.
• Unit model
• Content of trouble
• Alarm code No. on LCD or detail of flashing indicator.
TrOUBLESHOOTING
PMML0254A rev.4 - 12/2018
20
