Troubleshooting Tips - Friedrich KCS08A10A Service Manual

Troubleshooting Tips

Problem
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
Sufficiently, or Cycles On And Off
Too Frequently.
45
TROUBLESHOOTING
Possible Cause
The power button is off or the set point tem-
perature is satisfied.
The LCDI power cord is unplugged.
The LCDI power cord has tripped (Reset
button has popped out).
The circuit breaker has tripped or the sup-
ply circuit fuse has blown.
There has been a local power failure.
Other appliances are being used on the
same circuit. (115 Volt only)
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 but-
ton 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 filter 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.
Figure 717 (Troubleshooting Tips)
Possible Solution
Push the power button on and raise or lower
temperature setting (as appropriate) to call for
operation.
Plug into a properly grounded 3 prong receptacle.
(See Electrical Rating Tables, Figure 206) for the
proper receptacle type for your unit.
Press and release RESET (Listen for click. Reset
button latches and remains in.) Check that the
green LED light is on 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, Fig-
ure 206) 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.) Check that the green
LED light is on to resume normal operation.
Once the problem has been determined and cor-
rected, 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, furni-
ture, etc.
• Ensure that all windows and doors are closed.
• Adjust the Temperature control to a cooler or
warmer setting as necessary.
• Clean the filter, (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.