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49-5000041 Rev. 6
TROUBLESHOOTING TIPS
Troubleshooting Tips... Before you call for service
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Possible Cause Solutions
UNIT DOES NOT START
Unit may have become unplugged
Fuse may have blown
Circuit breaker may have been tripped
Unit may be off
Unit may be in a protection mode
Check that plug is plugged securely in wall receptacle.
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that the plug has not tripped.
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Turn unit on (bottom right button on keypad).
UNIT NOT COOLING/HEATING ROOM
Unit air discharge section is blocked
Temperature setting is not high or low enough.
NOTE: Setpoint limits may not allow the unit
to heat or cool the room to the temperature
desired.Check section on dipswitch settings.
Unit air filters are dirty.
Room is excessively hot or cold when unit is
started.
Vent door left open.
Unit may be in a protection mode.
Compressor is in time delay.
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unit airflow.
Reset to a lower or higher temperature setting.
Remove and clean filters.
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heating or cooling early before outdoor temperature,cooking heat or
gatherings of people make room uncomfortable.
Close vent door.
Check dipswitch and wall thermostat settings for desired comfort.
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DISPLAY HAS STRANGE NUMBERS/
CHARACTERS ON IT
The unit may be in a protection mode.
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UNIT MAKING NOISES Clicking,gurgling and whooshing noises are normal during operation of
unit.
WATER DRIPPING OUTSIDE If a drain kit has not been installed, condensation dripping during very
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installed and is connected to a drain system, check gaskets and fittings
around drain for leaks and plugs.
WATER DRIPPING INSIDE
Wall sleeve is not installed level
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Check that installation is level and make any necessary adjustments.
ICE OR FROST FORMS ON INDOOR COIL
Low outdoor temperature
Dirty filters
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operation until ice or frost melts.
Remove the clean filters.
COMPRESSOR PROTECTION
Power may have cycled,so compressor is in a
restart protection.
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ELECTRIC HEATING FAILURE Clean the evaporator once every three months by professional people.
NOTES:
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2. If unit is installed where condensation drainage could drip in an undesirable location,an accessory drain kit should be
installed and connected to drain system.
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