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Fujitsu AO17A Service Instructions Manual page 9

Multi split type air conditioner, 2/3/4/5-room multi, wireless remote control

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12. OPERATING MODES
(1) "AUTO" position
• HEAT & COOL MODEL (REVERSE CYCLE)
q Depending on the room temperature at the time
operation begins, the operating mode will be
switched automatically as shown in the
accompanying table.
Also, depending on the operating mode, the room
temperature setting will cause the "standard"
temperature to be set as shown.
Actual Room
Operating Mode
Temperature
30°C or above
Cooling
27°C to 30°C
Cooling
24°C to 27°C
Dry
22°C to 24°C
Monitor
Below 22°C
Heating
The operating mode and standard thermostat
settings are selected automatically when
operation begins.
w When automatic operation is initiated, the fan will
run at very low speed for about one minute while
the unit detects and selects the proper operating
mode.
e Once the operating mode has been set, the
mode will not change even if the room
temperature changes.
However, during the monitor operation mode, if
the room temperature changes to below 22°C,
the mode will automatically switch to Heat, and
when it rises above 24°C the mode will
automatically switch to Dry.
r When in the monitor mode, the fan will operate
very slowly.
t If the START/STOP button is pressed to
recommence operation within two hours after
stopping automatic operation, the unit will begin
operating from the same mode as before.
• COOLING MODEL
q Depending on the room temperature at the time
operation begins, the operating mode will be
switched automatically as shown in the
accompanying table.
Also, depending on the operating mode, the room
temperature setting will cause the "standard"
temperature to be set as shown.
Actual Room
Operating Mode
Temperature
30°C or above
Cooling
27°C to 30°C
Cooling
25°C to 27°C
Dry
23°C to 25°C
Dry
Below 23°C
Dry
The operating mode and standard thermostat
settings are selected automatically when
operation begins.
w When automatic operation is initiated, the fan will
run at very low speed for about one minute while
the unit detects and selects the proper operating
mode.
e Once the operating mode has been set, the
Thermostat Setting
(standard setting)
27°C
26°C
24°C
23°C
*During Heating mode :
Set the thermostat to a temperature setting that is higher
than the current room temperature. The Heating mode will
not operate if the thermostat is set lower than the actual
room temperature.
During Cooling/Dry mode :
Set the thermostat to a temperature setting that is lower
than the current room temperature. The Cooling and Dry
modes will not operate if the thermostat is set higher than
the actual room temperature (in Cooling mode, the fan
alone will operate).
*During Fan mode :
HEAT & COOL MODEL (REVERSE CYCLE)
You can not use the unit to heat and cool your room.
During Fan mode : COOLING MODEL
• Fan operation begins when room temperature in the
vicinity of the air conditioner rises above the set
Thermostat Setting
thermostat temperature; when the temperature drops, fan
(standard setting)
operation stops.
27°C
• If the air emitted feels to cool, raise the thermostat
26°C
setting.
24°C
22°C
20°C
– 8 –
mode will not change even if the room
temperature changes.
r If the START/STOP button is pressed to
recommence operation within two hours after
stopping automatic operation, the unit will begin
operating from the same mode as before.
(2) *Heating : Use to warm your room.
q When Heating mode is selected, the air
conditioner will operate at very low fan speed for
about 3 to 5 minutes, after which it will switch to
the selected fan setting. This period of time is
provided to allow the indoor unit to warm up
before begin full operation.
w When the room temperature is very low, frost may
form on the outside unit, and its performance may
be reduced. In order to remove such frost, the unit
will automatically enter the defrost cycle from time
to time. During Automatic Defrosting operation,
the OPERATION Indicator Lamp (red) will flash,
and the heat operation will be interrupted.
(3) Cooling : Use to cool your room.
(4) Dry :
q Use for gently cooling while dehumidifying your
room.
w You cannot heat the room during Dry mode.
e During Dry mode, the unit will operate at low
speed; in order to adjust room humidity, the
indoor unit's fan may stop from time to time. Also,
the fan may operate at very low speed when
detecting room humidity.
r The fan speed cannot be changed manually when
Dry mode has been selected.
(5) Fan : Use to circulate the air throughout your room.

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