AirStage UTY-LNH series Manual de instrucciones - Página 14

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1. Selecting the Remote Control Unit Signal Code

TROUBLESHOOTING

Instructions relating to heating (*) are applicable only to "HEAT PUMP MODEL".

In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the power supply

plug or turn off the circuit breaker, and consult authorized service personnel.

Merely turning off the unit's power switch will not completely disconnect the unit from the power source.

WARNING

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:

Symptom

NORMAL

Doesn't operate

FUNCTION

immediately:

Noise is heard:

Smells:

Mist or steam are

emitted:

Airﬂ ow is weak or

stops:

Water is produced

from the outdoor

unit:

En-13

● 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.

● 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.

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

ally. This sound is produced by the Automatic Defrosting opera-

tion.

● 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 Automatic

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 temperature setting, the fan of indoor unit starts and stops.

If you wish to warm the room further, set the preset temperature to

a higher setting.

*● During Heating operation, the unit will temporarily stop operation

(between 4 and 15 minutes) as the Automatic Defrosting mode oper-

ates. During the Automatic Defrosting operation, the OPERATION

indicator lamp (green) will ﬂ ash.

● The fan may operate at very low speed during Dry operation or when

the unit is monitoring the room's temperature.

● In the monitor AUTO operation, the fan will operate at very low

speed.

*● During Heating operation, water may be produced from the outdoor

unit due to the Automatic Defrosting operation.

Problem

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