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Troubleshooting Tips
Many common portable air conditioner problems are easily resolved. Try the troubleshooting suggestions below to
see if the problems can be resolved before having to contact the service department.
Problem
The portable air
conditioner does not
turn on
The unit turns on but the com-
pressor does not turn on (the fan
runs but the unit is not cooling)
The
air
coming
out
unit
is not
very
cold,
the airflow volume is weak
The unit has worked for a
long time, but the room is
not cold enough
Possible Causes
∧ Power failure / outage
∧ The automatic switch, line fuse, or
breaker has been tripped
∧ The power supply voltage is too low
∧ The power cord is damaged
∧ The L.C.D.I. power plug for the unit is
tripped
∧ The internal water reservoir is full and
the TANK FULL indicator appears on
the display
∧ The room temperature is outside of the
operational tolerances of the unit
∧ The Cooling mode is not on
∧ The compressor has not turned on yet
because of its time delay
∧ The set temperature is too high
∧ The internal water reservoir is full and
the TANK FULL indicator appears on
the display
∧ The filters are dirty or obstructed
of
the
∧ The air intake or exhaust is ob-structed
or
∧ The unit is set in DRY or FAN mode
∧ The unit is set to low fan speed
∧ Windows or doors are open
∧ There are too many people in the room
∧ There is direct sunshine into the room
∧ The room is a kitchen or with many
heat-producing appliances
∧ There is a server in the room
∧ The room is too large
Solutions
∧ Restore the power supply
∧ Flip the switch / change the fuse / turn the
breaker back on. Also note that you may
have too many appliances drawing power on
one circuit, you may need to move the other
appliances to another circuit
∧ Move the unit onto another circuit with the
correct voltage
∧ Call for service. Only authorized personnel
should replace damaged power cord or
power plug
∧ Press the Reset button on the L.C.D.I. power
plug
∧ Drain water from the air conditioner
∧ Possible loose internal connection. Please
contact Whynter for service
∧ This unit is designed to work in ambient
temperatures of 63°F to 90°F
∧ Press the MODE button until the COOL light
is shown on the display
∧ Give the compressor 3 minutes to turn on
after the Cooling mode has been selected
∧ Set the air conditioner to a lower tem-
perature. It is recommended to set the
temperature to at least 5°F of the ambient
temperature
∧ Either manually drain the water by removing
the drain plug or allow the unit to exhaust
the water itself by run-ning the fan only
mode. Then cooling will resume
∧ Possible loose internal connection. Please
contact Whynter for service
∧ Clean the air filters
∧ Make sure there is at least 20" of
clearance from the air intake. Make the
length of the exhaust hose is as short as
possible
∧ Set the unit to the cooling mode
∧ Set the unit to a higher fan speed
∧ Close all windows and doors
∧ You may need additional cooling or another
air conditioner
∧ Close curtains or blinds and try to minimize
the amount of direct sunlight into the room
∧ You may need additional cooling or another
air conditioner
Page 16
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