Troubleshooting, En-13, Warning – Friedrich MW30C3G User Manual
Page 14
En-13
TROUBLESHOOTING
WARNING!
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical
breaker or disconnect the power supply plug, and consult authorized service personnel.
Merely turning off the unit’s power switch will not completely disconnect the unit from the power source.
Always be sure to turn off the electrical breaker or disconnect the power supply plug to ensure that
power is completely off.
Before requesting service, perform the following checks:
Symptom
Problem
See Page
NORMAL
FUNCTION
Doesn’t operate immedi-
ately:
● If the unit is stopped and then immediately started again, the com-
pressor will not operate for about 3 minutes, in order to prevent fuse
blowouts.
● Whenever the Power Supply Plug is disconnected and then recon-
nected to a power outlet, the protection circuit will operate for about
3 minutes, preventing unit operation during that period.
—
Noise is heard:
● During operation and immediately after stopping the unit, the sound
of water fl owing in the air conditioner’s piping may be heard. Also,
noise may be particularly noticeable for about 2 to 3 minutes after
starting operation (sound of coolant fl owing).
● During operation, a slight squeaking sound may be heard. This is
the result of minute expansion and contraction of the front cover due
to temperature changes.
—
Smells:
● Some smell may be emitted from the indoor unit. This smell is the
result of room smells (furniture, tobacco, etc.) which have been taken
into the air conditioner.
—
Mist or steam are
emitted:
● During Cooling or Dry operation, a thin mist may be seen emitted
from the indoor unit. This results from the sudden Cooling of room air
by the air emitted from the air conditioner, resulting in condensation
and misting.
—
Airfl ow is weak or stops:
● The fan may operate at very low speed during Dry operation or when
the unit is monitoring the room’s temperature.
6
● During SUPER QUIET operation, the fan will operate at very low
speed.
6
● In the monitor AUTO operation, the fan will operate at very low
speed.
6
9315345394_OM.indb 13
9315345394_OM.indb 13
9/30/2010 2:44:25 PM
9/30/2010 2:44:25 PM