5
Control Panel
The control panel is shipped with a protective plastic
film. This film can be left on or removed. To clean, use a
damp cloth and mild detergent.
Outdoor Coil
The coil on the outdoor side of the unit should be
checked periodically and cleaned if clogged with dirt or
soot from the atmosphere. If extremely dirty, it may need
to be professionally steam cleaned.
Base Pan
In some installations, dirt or other foreign matter may be
blown into the unit from the outside and settle in the
base pan (the bottom of the unit). Check the base pan
periodically and clean it out, if necessary.
Tips for Energy Saving
Do not
• Block the air intake and outlet of the unit. If they are
obstructed, the unit will not work well, and may be
damaged.
• Let direct sunlight into the room. Use sunshades,
blinds or curtains. If the walls and ceiling of the room
are warmed by the sun, it will take longer to cool the
room.
Do
• Keep the air filter clean. (Refer to “Care and
Cleaning.”)
A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep win-
dows, doors and any other openings closed.
• Keep the ventilator closed for economy and maximum
cooling.
PROBLEM POSSIBLE CAUSE
AIR CONDITIONER
DOES NOT
OPERATE
AIR CONDITIONER
“DOES NOT COOL
OR HEAT AS IT
SHOULD”
“BURNING” ODOR
AT START OF
HEATING
OPERATION
OPERATING
SOUNDS
AIR IS NOT
ALWAYS COOL
DURING COOLING
OPERATION
AIR IS NOT
ALWAYS HOT
DURING HEATING
OPERATION
Troubleshooting
• The power cord is not plugged in or
circuit breaker is tripped.
• The unit is waiting for the compressor
overload protector to reset.
• Curtains, blinds or furniture blocking
the front of the air conditioner are
restricting the air flow.
• Thermostat control may not be set
high/low enough. Turn the control to a
lower or higher position. (NOTE: In
some installations, the thermostat
control cannot be turned all the way to
the highest end or lowest end. This is
normal. Do not attempt to force the
control beyond its stopping points.)
• A dirty air filter is blocking air flow.
The filter should be cleaned at least
once every 2 weeks. See the instruc-
tions in the cleaning section.
• The room may have been very hot or
very cold when the air conditioner
was first turned on. Allow time for it
to cool down or warm up.
• The ventilation control may be set to
the OPEN position, allowing outside
air to enter the room.
• Dust on the surface of the electrical
heater can cause a “burning” odor at
the beginning of the heating opera-
tion. This odor should quickly fade.
• Relay clicks may be heard when the
compressor or fan cycles on and off.
This is normal.
• The fan runs continuously when the
unit is operating unless the Fan Cycle
Switch under the control panel is set
to CYCLE. In this case, the fan cycles
on and off with the electrical heater
or compressor.
• The Fan Cycle Switch may be set to
Fan Cont (continuous). This causes
the fan to blow room air even when
the compressor is off. The continuous
air flow provides better overall tem-
perature control.
• The Fan Cycle Switch may be set to
Fan Cont (continuous). This causes
the fan to blow room air even when
the electrical heater is off. The contin-
uous air flow provides better overall
temperature control.
US STW PTAC 8/8/01 5:34 PM Page 5
(111 pages)
(50 pages)
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