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Problem Possible Cause Possible Solution
Unit does not operate.
The unit is turned to the off position,
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
pg. 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 pg. 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
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.
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
NOTE:
To more accurately identify the problem, fi rst check for current maintenance
alerts and their history.