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Remounting
Grasp the sections near the front panel arms on both sides, and
hold the front panel so that it is nearly horizontal. Push the arm
shafts towards the outside so that they come into contact with the
top of the indentations on the right and left sides of the air
conditioner. Then push firmly until the arm shafts click into place.
After closing the front panel, press firmly on the parts indicated by
the arrows to securely fasten the panel in place.
Also refer to the figure that shows “How to replace the anti-mold
filter”.
Washing the front panel with water
• Clean the front panel gently using a soft sponge, or the like. Then
wipe away any remaining moisture.
• Neutral detergent may be used to remove stubborn dirt. Then rinse
thoroughly with water and wipe away any remaining moisture.
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following
points before requesting service. If it still does not work properly,
contact your dealer or service center.
OPERATING RANGE
The air conditioner is operable within the temperature ranges as
listed below:
WIRED REMOTE CONTROLLER
A separately sold wired remote controller (STK-RCS-
7TWSUA) used with this air conditioner is also available. If
you wish to use the wired remote control function, you will
need to purchase both the optional wired remote controller
and its connection kit (STK-KCW2).
When using a footstool or the like, be
careful not to let it tip over.
Trouble Possible Cause Remedy
Air conditioner does
not run at all.
1. Power failure. 1. Restore power.
2. Leakage circuit
breaker tripped.
2. Contact service
center.
3. Line voltage is too
low.
3. Consult your
electrician or
dealer.
4. Batteries in remote
control unit have
run down.
4. Replace batteries.
OPERATION lamp
blinks and air
conditioner does not
operate.
Trouble in system. Contact service
center.
Compressor runs but
soon stops.
Obstruction in front of
condenser coil.
Remove obstruction.
Poor cooling (or
heating)
performance.
1. Dirty or clogged air
filter.
1. Clean air filter to
improve airflow.
2. Heat source or
many people in
room.
2. Eliminate heat
source if possible.
3. Doors and/or
windows are open.
3. Shut them to keep
the heat (or cold)
out.
4. Obstacle near air
intake or air
discharge port.
4. Remove it to
ensure good
airflow.
5. Thermostat is set
too high for cooling
(or too low for
heating).
5. Set the
temperature lower
(or higher).
6. (Outdoor
temperature is too
low for heating.)
6. (Consult your
dealer or try to use
another heat
appliance.)
CAUTION
Clicking sound is
heard from the air
conditioner.
In heating or cooling
operation, any plastic
parts may expand or
shrink due to a
sudden temperature
change. In this event,
a clicking sound may
occur.
This is normal, and
the sound will soon
disappear.
OPERATION lamp
lights but outdoor unit
will not run.
The use of cellular
phones near the air
conditioner may
cause disturbance to
its normal operation.
1. Turn off the power
then restart the air
conditioner after a
while.
2. Consult your
dealer.
Temperature Indoor air
temperature
Outdoor air
temperature
COOLING Max. 95 °F DB /
71 °F WB
115 °F DB
Min. 67 °F DB /
57 °F WB
0 °F DB
HEATING Max. 80 °F DB /
67 °F WB
75 °F DB /
65 °F WB
Min. – DB / – WB – DB / 0 °F WB
Trouble Possible Cause Remedy
OI-149-17-EG
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