Troubleshooting Tips - Friedrich Kuhl SM18M30 User Manual

Troubleshooting Tips

COMPLAINT
Unit does not operate.
Unit Trips Circuit Breaker or
Blows Fuses.
LCDI Power Cord Trips (Reset
Button Pops Out).
Unit Does Not Cool/Heat
Room Suffi ciently, Or Cycles
On And Off Too Frequently.
40
920-198-00
CAUSE
● The unit is turned to the off position,
or the thermostat is satisfi ed.
● The LCDI power cord is unplugged.
● The LCDI power cord has tripped
(Reset button has popped out).
● The circuit breaker has tripped or
the supply circuit fuse has blown.
● There has been a local power
failure.
● Other appliances are being used on
the same circuit.
● An extension cord is being used.
● The circuit breaker or time-delay
fuse is not of the proper rating.
● The LCDI power cord can trip
(Reset button pops out) due to
disturbances on your power supply
line.
● Electrical overload, overheating, or
cord pinching can trip (Reset button
pops out) the LCDI power cord.
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.
● The return/discharge air grille is
blocked.
● Windows or doors to the outside are
open.
● The temperature is not set at a cool
enough/warm enough setting.
● The fi lter is dirty or obstructed.
● The indoor coil or outdoor coil is
dirty or obstructed.
● There is excessive heat or moisture
(cooking, showers, etc.) in the room.
● The temperature of the room you
are trying to cool is extremely hot.
SOLUTION
● Turn the unit to the on position and raise or
lower temperature setting (as appropriate) to
call for operation.
● Plug into a properly grounded 3 prong
receptacle. See "Electrical Rating Tables" on
pg. 6 for the proper receptacle type for your
unit.
● Press and release RESET (listen for click;
Reset button latches and remains in) to resume
operation.
● Reset the circuit breaker, or replace the fuse as
applicable. If the problem continues, contact a
licensed electrician.
● The unit will resume normal operation once
power has been restored.
● The unit requires a dedicated outlet circuit, not
shared with other appliances.
● Do NOT use an extension cord with this or any
other air conditioner.
● 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.
● Press and release RESET (listen for click;
Reset button latches and remains in) to resume
normal operation.
● 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.
● Ensure that the return and/or discharge air
paths are not blocked by curtains, blinds,
furniture, etc.
● Ensure that all windows and doors are closed.
● Adjust the Temperature control to a cooler or
warmer setting as necessary.
● Clean the fi lter, (See Routine Maintenance), or
remove obstruction.
● Clean the coils, (See Routine Maintenance), or
remove obstruction.
● 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.
● Allow additional time for the air conditioner to
cool off a very hot room.
Figure 44