Fujitsu ABT series Instrukcja obsługi - Strona 15

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OPERATING TIPS

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

*Heating Performance

G This air conditioner operates on the heat-pump principle,

absorbing heat from outdoor air and transferring that heat

indoors. As a result, the operating performance is reduced

as outdoor air temperature drops. If you feel that insuffi-

cient heating performance is being produced, we recom-

mend you use this air conditioner in conjunction with

another kind of heating appliance.

G Heat-pump air conditioners heat your entire room by

recirculating air throughout the room, with the result that

some time may be required after first starting the air con-

ditioner until the room is heated.

*When Indoor and Outdoor Temperature are High

G When both indoor and outdoor temperatures are high

during use of the heating mode, the outdoor unit's fan

may stop at times.

*Fan speed: AUTO

Heating: The fan will operate at very low speed when the

temperature of the air issued from the indoor unit

is low.

Cooling: As the room temperature approaches that of the

set temperature, the fan speed becomes slower.

Fan:

The fan runs at the low fan speed.

Mode operation: AUTO

COOLING MODEL

G When the room temperature is 2 °C higher than the set

temperature, the mode will switch between Cooling and

Drying.

HEAT & COOL MODEL (Reverse Cycle)

Auto changeover function

G When AUTO CHANGEOVER is selected, the air conditioner

selects the appropriate operation mode (Cooling or Heat-

ing) according to your room's present temperature.

G When AUTO CHANGEOVER is first selected, the fan will

operate at a very low speed for about 1 minute while the

unit determines the current conditions of the room and

selects the proper operation mode.

If the difference between thermostat setting and actual

room temperature is more than +2 °C

→ Cooling or dry operation

(Monitor operation may be selected if the outdoor tem-

perature is low.)

If the difference between thermostat setting and actual

room temperature is within ±2 °C

→ Monitor operation

If the difference between thermostat setting and actual

room temperature is more than –2 °C

→ Heating operation

(Monitor operation may be selected if the outdoor tem-

perature is high.)

*Microcomputer-controlled Automatic Defrosting

G When using the Heating mode under conditions of low

outdoor temperature and high humidity, frost may form

on the outdoor unit, resulting in reduced operating per-

formance.

In order to prevent this kind of reduced performance, this

unit is equipped with a Microcomputer-controlled Auto-

matic Defrosting function. If frost forms, the air condi-

tioner will temporarily stop, and the defrosting circuit will

operate briefly (for about 4 to 15 minutes).

During Automatic Defrosting operation, the OPERATION

indicator lamp (green) will flash.

*Low Ambient Cooling

G When the outdoor temperature drops, the outdoor unit's

fans may switch to Low Speed.

*Hot start (for heating)

G The indoor unit prevents cold drafts when heating opera-

tion begins.

The indoor unit fan will not operate or it will operate at a

very low speed until the heat exchanger reaches the set

temperature.

G During the Drying mode operation, the FAN setting should

be switched to LOW for a gently cooling effect during

which the fan may temporarily stop rotating.

G When the room temperature is near the thermostat set-

ting, the air conditioner will begin monitor operation. In

the monitor operation mode, the fan will operate at a very

low speed. If the room temperature subsequently

changes, the air conditioner will once again select the

appropriate operation (Heating or Cooling) to adjust the

temperature to the value set in the thermostat. (The moni-

tor operation range is ±2 °C relative to the thermostat

setting.)