PTAC-SVX002A-EN
29
Troubleshooting
Issue
Possible Causes Resolution
Unit does not
start.
• Unit may have become unplugged.
• Fuse may be blown.
• Circuit breaker may be tripped.
• Unit may be OFF or in wall thermostat
mode.
• Unit may be in a protection or diagnostic
failure mode. (Refer to the section,
Intelligent Self-checking Control.)
• Ensure that the plug is securely in the wall
receptacle.
• Replace the fuse.
(a)
• Turn ON the unit. The unit shows green
when ON and red when OFF. If the LED is
not lit, there may be a problem with power
or damage to the control.
Unit not cooling
or heating the
room.
• Unit air discharge section is blocked.
• Temperature setting is not high or low
enough. Setpoint limits may not allow the
unit to heat or cool the room to the desired
temperature.
• 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 of diagnostic
failure mode. (Refer to the section,
Intelligent Self-checking Control.)
• Compressor is in time delay mode. There
is a protective time delay (approximately
3 seconds) on starting the compressor
after a power outage (or restarting after it
has been turned OFF) to prevent tripping
of the compressor overload.
• Ensure that curtains, blinds, or furniture
are not restricting or blocking unit airflow.
• Reset to a lower or higher temperature
setting.
• Remove and clean filters.
• Allow a sufficient amount of time for the
unit to heat or cool the room. Start
heating/cooling early before outdoor
temperatures, cooking heat, or
gatherings of people begin to make the
room uncomfortable.
• Close the vent door.
• Check the dip switch settings for the
desired comfort level.
• Wait approximately three (3) minutes for
the compressor to start.
Unit display
shows strange
numbers/
characters.
• The unit may be in a diagnostic condition.
(Refer to the section, Intelligent Self-
checking Control.)
• The unit may be set for Celsius instead of
Fahrenheit.
Unit makes
noises.
• Clicking, gurgling, and whooshing sounds
are normal during the operation of the
unit.
Water dripping
outside.
• If a drain kit has not been installed,
condensation run-off during very hot and
humid weather is normal.
(b)
• If a drain kit has been installed and is
connected to a drain system, check
gaskets and fitting around the drain for
leaks or clogs.
Water dripping
inside.
• Wall sleeve is not installed level. • Wall sleeve must be installed level for
proper drainage of the condensation.
Check that the installation is level and
make any necessary adjustments.
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