Troubleshooting, En-13, Warning – Friedrich MW12Y3FM User Manual

Page 16

Advertising
background image

En-13

TROUBLESHOOTING

WARNING!

Symptom

Doesn’t operate immedi-
ately:

Noise is heard:

Smells:

Mist or steam are
emitted:

Airflow is weak or stops:

Problem

● 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 re-

connected 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.

● During Heating operation, a sizzling sound may be heard occasion-

ally. This sound is produced by the Automatic Defrosting operation.

● 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.

● During Heating operation, the outdoor unit’s fan may stop, and

steam may be seen rising from the unit. This is due to the Auto-
matic Defrosting operation.

● When Heating operation is started, fan speed is temporarily very

low, to allow internal parts to warm up.

● During Heating operation, if the room temperature rises above

the thermostat setting, the outdoor unit will stop, and the indoor
unit will operate at very low fan speed. If you wish to warm the
room further, set the thermostat to a higher setting.

● During Heating operation, the unit will temporarily stop opera-

tion (between 7 and 15 minutes) as the Automatic Defrosting mode
operates. During the Automatic Defrosting operation, the OPERA-
TION Indicator Lamp will flash.

● 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.

See Page

14

14

14

5

5

5

NORMAL

FUNCTION

In the event of a malfunction (burning smell, etc.), immediately stop operation, 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 disconnect the Power Supply Plug or turn off your circuit breaker to
ensure that power is completely off.

Before requesting service, perform the following checks:

9373420040_OM_en.p65

2/2/06, 17:07

13

Advertising
This manual is related to the following products: