NOTES:
1.If circuit breaker is tripped or fuse is blown more than once, contact a qualified electrician.
2.If unit is installed where condensation drainage could drip in an undesirable location, an accessory drain kit should be
installed and connected to a drain system.
TROUBLESHOOTING
Before calling for service, please review the chart below.
13
POSSIBLE CAUSES
SOLUTIONS
• Unit may have become unplugged.
• Check that plug is plugged securely in wall receptacle.
Note: Plug has a test/reset button on it. Make sure that the plug has not tripped.
• Fuse may have blown.
• Replace the fuse. See Note 1 (below).
• Circuit breaker may have been tripped.
• Reset circuit breaker. See Note 1 (below).
• Unit may be off.
• Turn unit on (bottom right button on keypad).
• Unit may be in a protection mode.
• Unit air discharge section is blocked.
• Make sure curtains, blinds or furniture are not restricting or blocking unit airflow.
• Temperature setting is not high or low
enough.
• Reset to a lower or higher temperature setting.
Note: Set point 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.
• Remove and clean filters
• Room is excessively hot or cold when
unit is started.
• Allow sufficient amount of time for unit to heat or cool the room. Start heating or
cooling early before outdoor temperature, cooking heat or groups of people
make room uncomfortable.
• Vent door left open.
• Close vent door.
• Unit may be in a protection mode.
• Check dipswitch settings for desired comfort.
• Compressor is in time delay.
• Wait approximately 3 minutes for compressor to start.
• Strange numbers/characters appear
on the display.
• The unit may be in a protection mode.
• The unit may be set for °C (instead of °F).
• The unit is making noises.
• Clicking, gurgling or whooshing noises are normal during operation of unit.
• Water is dripping outside.
• If a drain kit has not been installed, condensation runoff during very hot and
humid weather is normal. See Note 2 (below). If a drain kit has been installed
and is connected to a drain system, check gaskets and fittings around drain for
leaks and plugs.
• Wall sleeve is not installed level
• Wall sleeve must be installed level for proper drainage of condensation. Check
that installation is level and make any necessary adjustments.
• Low outdoor temperature
• When outdoor temperature is approximately 55°F or below, frost may form on
the indoor coil when unit is in Cooling mode. Switch unit to FAN operation until
ice or frost melts.
• Dirty filters
• Remove or clean filters.
• Compressor may have cycled, so
compressor is in a restart protection.
•
Random Compressor restart
- Whenever the unit is plugged in or power has
been restarted, a random compressor restart will occur. After a power outage,
the compressor will restart after approximately 3 minutes.
•
Compressor Protection
- To prevent short cycling of the compressor, there is
a random startup delay of 3 minutes and a minimum compressor run time of 3
minutes.
• The electric heating function is not
working properly.
• The evaporator should be cleaned once every three months by a professional.
ELECTRIC HEATING FAILURE
UNIT DOES NOT START
UNIT NOT COOLING/HEATING ROOM
WATER DRIPPING INSIDE
ICE OR FROST FORMS ON INDOOR COIL
COMPRESSOR PROTECTION
DISPLAY HAS STRANGE NUMBERS/CHARACTERS ON IT
UNIT MAKING NOISES
WATER DRIPPING OUTSIDE
Summary of Contents for 1PTC07A-3.5
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