Friedrich 920-087-09 ユーザーズマニュアル

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Basic Troubleshooting
COMPLAINT
CAUSE
SOLUTION
Unit does not operate.
 
Unit turned off.
 
Turn unit on
 
Thermostat is satisfied.
 
Raise/Lower temperature setting.
 
LCDI power cord is unplugged.
 
Plug into a properly grounded 3 prong recep-
tacle. See "Electrical Rating Tables" on page 
13 for the proper receptacle type for your unit.
 
LCDI power cord has tripped.
 
Press and release RESET (listen for click; 
Reset button latches and remains in) to 
resume operation.
 
Circuit breaker has tripped.
 
Reset the circuit breaker.
 
Supply circuit fuse has blown.
 
Replace the fuse.
 
Local power failure.
 
Unit will resume normal operation once power 
has been restored.
Unit trips circuit breaker or
blows fuses.
 
Other appliances being used on same 
circuit.
 
The unit requires a single 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.
 
Circuit breaker or time-delay fuse isn't 
of the proper rating.
 
Replace circuit breaker or time-delay fuse 
for the proper rating. See "Electrical Rating 
Tables” on page 13. If problem continues 
contact a licensed electrician.
LCDI Power Cord Trips
(Reset Button Pops Out)
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 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.
Unit does not cool/heat room sufficiently, 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 door 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 filter is dirty or obstructed.
 
Clean the filter, (See Recommended Mainte-
nance) or remove obstruction.
 
The indoor coil or outdoor coil is dirty 
or obstructed.
 
Clean the coils, (See Recommended Mainte-
nance) or remove obstruction.
 
The temperature of the room you are 
trying to cool is extremely hot.
 
Allow additional time too cool a very hot room
 
The outside temperature is below 
60º F.
 
Do not try to operate your air conditioner in 
the cooling in the cooling mode when the 
outside temperature is below 60º F. 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 insufficient 
cooling capacity to match the heat 
gain of the room.
 
Check the cooling capacity of your unit to en-
sure it is properly sized for the room in which 
it is installed. Room air conditioners are not 
designed to cool multiple rooms.