Fujitsu ACY71UIA-LM Instrukcja obsługi - Strona 13

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TROUBLESHOOTING

Instructions relating to heating (*) are applicable only to "HEAT & COOL MODEL" (Reverse Cycle).

WARNING

Before requesting service, perform the following checks:

Symptom

NORMAL

Does not operate immedi-

FUNCTION

ately:

Noise is heard:

Smells:

Mist or steam are emitted:

Airﬂ ow is weak or stops:

Water is produced from the

outdoor unit:

The FILTER indicator

blinks:

thermo sensor display

on the remote controller is

ﬂ ashing:

In following events, immediately stop operation of the air conditioner, and disconnect all the power

supply by turning off the electrical breaker or disconnecting the power plug. Then consult your dealer

or authorized service personnel.

As long as the unit is connected to the power supply, it is not insulated from the power supply even if

the unit is turned off.

• Unit smells of something burning or emits smoke

• Water leaks from the unit

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 electrical breaker is turned off then on again, 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 heating operation, a sizzling sound may be heard

occasionally. 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 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

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 operation

(between 4 and 15 minutes) as the automatic defrosting mode oper-

ates. During the automatic defrosting operation,

on the remote controller display.

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

the unit is monitoring the room's temperature.

In case of multi-type unit, if multiple units are operated in different

operation modes as shown below, the units operated afterward will

stop and

stopped indoor units.

• Heating mode and cooling mode (or dry mode)

• Heating mode and fan mode

During QUIET operation, the fan will operate at very low speed.

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.

Clean the ﬁ lter. Afterwards, turn the FILTER indicator off.

The room temperature sensor may be malfunctioning. Please con-

sult authorized service personnel.

Problem

will be shown on the remote controller display of the

See Page

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will be shown

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