54 PB
Problem Possible Cause Possible Solution
Unit does not operate.
The power button is off or the set point tem-
perature is satised.
Push the power button on 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, Figure 206) 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.) Check that the green LED light is on to resume opera-
tion.
The circuit breaker has tripped or the sup-
ply 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. (115 Volt only)
The unit requires a dedicated outlet circuit, not shared with other ap-
pliances.
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 rat-
ing. (See Electrical Rating Tables, Figure 206) 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 but-
ton pops out) due to disturbances on your
power supply line.
Press and release RESET (Listen for click. Reset button latches and
remains in.) Check that the green LED light is on 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
Sufciently, 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 hot-
test 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
Troubleshooting Tips
Figure 717 (Troubleshooting Tips)
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