Troubleshooting - Friedrich MW09C1E Operating Manual

TROUBLE SHOOTING
WARNING!
Before requesting service, perform the following checks:
Symptom
NORMAL
Doesn't operate immediately:
FUNCTIONS
Noise is heard:
Smells:
Mist or steam are emitted:
Airflow is weak or stops:
In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect
the Power 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 disconnect the Power or turn off your circuit breaker to
ensure that power is completely off.
÷ If the unit is stopped and then immediately started again, the
compressor will not operate for about 3 minutes, in order to
prevent fuse blowouts.
÷ Whenever the Power is disconnected and then reconnected to
a power outlet, the protection circuit will operate for about 3
minutes, preventing unit operation during that period.
÷ During operation and immediately after stopping the unit, the
sound of water flowing 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 flowing).
÷ 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.
÷ 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.
÷ 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.
÷ The fan may operate at very low speed during Dry operation
or when the unit is monitoring the room's temperature.
÷ During SUPER QUIET operation, the fan will operate at very
low speed.
÷ In the monitor AUTO operation, the fan will operate at very
low speed.
Problem
See Page
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