Installation & Operation Manual (2021)

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COMPLAINT CAUSE SOLUTION
Unit Does Not Cool/ Heat Room
Sufciently, or Cycles On And Off
Too Frequently (continued).
• The outside temperature is below 60 °F
(16 °C).
• Do not try to operate your air conditioner in the
cooling mode when the outside temperature is below
60 °F (16 °C). The unit will not cool properly, and the
unit may be damaged.
• The digital control is set to fan cycling mode.
• Since the fan does not circulate the room air
continuously at this setting, the room air does not
mix as well and hot (or cold) spots may result. Using
the continuous fan setting is recommended to obtain
optimum comfort levels.
• The air conditioner has insufcient cooling
capacity to match the heat gain of the room.
• Check the cooling capacity of your unit to ensure it
is properly sized for the room in which it is installed.
Room air conditioners are not designed to cool
multiple rooms.
• The air conditioner has insufcient heating
capacity to match the heat loss of the room.
• Check the heating capacity of your unit. Air conditioners
are sized to meet the cooling load, and heater size
is then selected to meet the heating load. In extreme
northern climates, room air conditioners may not be able
to be used as a primary source of heat.
Unit Runs Too Much.
• This may be due to an excessive heat load
in the room.
• If there are heat producing appliances in use in the
room, or if the room is heavily occupied, the unit will
need to run longer to remove the additional heat.
• It may also be due to an improperly sized unit.
• Be sure to use exhaust vent fans while cooking or
bathing and, if possible, try not to use heat producing
appliances during the hottest part of the day.
• This may be normal for higher efciency
(EER) air conditioners.
• The use of higher efciency components in your new
air conditioner may result in the unit running longer
than you feel it should. This may be more apparent, if
it replaced an older, less efcient, model. The actual
energy usage, however, will be signicantly less
when compared to older models.
• You may notice that the discharge air
temperature of your new air conditioner
may not seem as cold as you may be
accustomed to from older units. This
does not; however, indicate a reduction
in the cooling capacity of the unit.
• The energy efciency ratio (EER) and cooling
capacity rating (Btu/ h) listed on the unit’s rating
plate are both agency certied.
Troubleshooting Tips continued
COMPLAINT CAUSE SOLUTION
Unit does not operate.
• The unit is turned to the off position, or the
thermostat is satised.
• Turn the unit to the on position and raise or lower
temperature setting (as appropriate) to call for
operation.
• The LCDI power cord is unplugged.
• Plug into a properly grounded 3 prong receptacle.
See “Electrical Rating Tables” on Page 6 for the
proper receptacle type for your unit.
• The LCDI power cord has tripped (Reset
button has popped out).
• Press and release RESET (Listen for click. Reset
button latches and remains in.) to resume operation.
• The circuit breaker has tripped or the
supply circuit fuse has blown.
• Reset the circuit breaker, or replace the fuse as
applicable. If the problem continues, contact a
licensed electrician.
• There has been a local power failure.
• The unit will resume normal operation once power
has been restored.
Unit Trips Circuit Breaker or
Blows Fuses.
• Other appliances are being used on the
same circuit.
• The unit requires a dedicated outlet circuit, not shared
with other appliances.
• An extension cord is being used.
• Do NOT use an extension cord with this or any other
air conditioner.
• The circuit breaker or time-delay fuse is
not of the proper rating.
• Replace with a circuit breaker or time-delay fuse of
the proper rating. See “Electrical Rating Tables” on
Page 6 for the proper circuit breaker/ fuse rating for
your unit. If the problem continues, contact a licensed
electrician.
LCDI Power Cord Trips
(Reset Button Pops Out).
• The LCDI power cord can trip (Reset
button pops out) due to disturbances on
your power supply line.
• Press and release RESET (Listen for click. Reset
button latches and remains in.) to resume normal
operation.
• Electrical overload, overheating, or cord
pinching can trip (Reset button pops out)
the LCDI power cord.
• Once the problem has been determined and
corrected, press and release RESET (Listen for
click. Reset button latches and remains in.) to
resume normal operation.
NOTE: A damaged power supply cord must be replaced with a new power supply cord obtained from the
product manufacturer and must not be repaired.
Unit Does Not Cool/ Heat Room
Sufciently, or Cycles On And Off
Too Frequently.
• The return/ discharge air grille is blocked.
• Ensure that the return and/ or discharge air paths are
not blocked by curtains, blinds, furniture, etc.
• Windows or doors to the outside are open. • Ensure that all windows and doors are closed.
• The temperature is not set at a cool
enough/ warm enough setting.
• Adjust the Temperature control to a cooler or warmer
setting as necessary.
• The lter is dirty or obstructed.
• Clean the lter, (see Routine Maintenance), or
remove obstruction.
• The indoor coil or outdoor coil is dirty or
obstructed.
• Clean the coils, (see Routine Maintenance), or
remove obstruction.
• There is excessive heat or moisture
(cooking, showers, etc.) in the room.
• Be sure to use exhaust vent fans while cooking or
bathing and, if possible, try not to use heat producing
appliances during the hottest part of the day.
• The temperature of the room you are
trying to cool is extremely hot.
• Allow additional time for the air conditioner to cool off
a very hot room.
Troubleshooting Tips