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9

SLEEP TIMER OPERATION

To Use the SLEEP timer

While the air conditioner is operating or stopped, press the
SLEEP button.

Both the indoor unit’s OPERATION indicator lamp (red) and the TIMER indicator
lamp (green) will light.

To Change the Timer Settings

Press the SLEEP button once again and set the time using the
SET TIME buttons.

Set the time while the Timer Mode Display is flashing (the flashing will continue for
about five seconds).

 button:

Press to advance the time.

 button:

Press to reverse the time.

About five seconds later, the entire display will reappear.

About the SLEEP timer

To prevent excessive warming or cooling during sleep, the SLEEP timer function automatically modifies the thermostat setting
in accordance with the time setting. When the set time has elapsed, the air conditioner completely stops.

During Heating operation (HEAT & COOL MODEL (Reverse
cycle) only):

When the SLEEP timer is set, the thermostat setting is
automatically lowered 1 °C every thirty minutes. When the
thermostat has been lowered a total of 4 °C, the thermostat
setting at that time is maintained until the set time has elapsed,
at which time the air conditioner automatically turns off.

SLEEP timer setting

During Cooling/Dry operation:

When the SLEEP timer is set, the thermostat setting is auto-
matically raised 1 °C every sixty minutes. When the thermo-
stat has been raised a total of 2 °C, the thermostat setting at
that time is maintained until the set time has elapsed, at which
time the air conditioner automatically turns off.

SLEEP timer setting

2 °C

3 °C

4 °C

30
minutes

1 °C

1 hour

1 hour
30 minutes

Set time

Set time

1 hour

1 °C

2 °C

Unlike other timer functions, the SLEEP timer is used to set the length of time until air conditioner operate is stopped.

To Cancel the Timer:

Use the TIMER button to select “TIMER
RESET”.
The air conditioner will return to normal
operation.

To Stop the Air Conditioner During
Timer Operation:

Press the START/STOP button.

MANUAL AUTO OPERATION

Use the MANUAL AUTO operation in the event the remote control unit is lost or otherwise unavailable.

How To Use the Main Unit Controls

Press the MANUAL AUTO button on the main unit control
panel.

To stop operation, press the MANUAL AUTO button once again.

When the air conditioner is operated
with the controls on the Main unit, it
will operate under the same mode as
the AUTO mode selected on the re-
mote control unit (see page 7).

The fan speed selected will be “AUTO”
and the thermostat setting will be
23 °C.

 CAUTION!

Do not press the MANUAL AUTO button with
wet hands or pointed objects, otherwise an
electric shock or malfunction may occur.

Summary of Contents for AOT18A

Page 1: ...OUNTED TYPE KEEP THIS OPERATION MANUAL FOR FUTURE REFERENCE FUJITSU GENERAL LIMITED OPERATING MANUAL Indoor Unit AST18AB AST18RB AST24AB AST24RB AST30AB AST30RB Outdoor Unit AOT18A AOT18R AOT24A AOT24R AOT30A AOT30R P N9369993015 ...

Page 2: ...tand for damage Do not place animals or plants in the direct path of the air flow Do not drink the water drained from the air conditioner Do not use in applications involving the storage of foods plants or animals precision equipment or art works Do not apply any heavy pressure to radiator fins Operate only with air filters installed Do not block or cover the intake grille and outlet port Ensure t...

Page 3: ...uring the period of operation during Cool ing or Dry mode the thermostat setting is gradually raised during the period of operation When the set time is reached the unit automatically turns off WIRELESS REMOTE CONTROL UNIT The WIRELESS REMOTE CONTROL UNIT allows convenient control of air conditioner operation OMNI DIRECTIONAL AIR FLOW SWING OPERATION Three dimensional control over air direction sw...

Page 4: ...3 9 B C 7 6 5 4 8 2 D SWING SWING TIMER OPERATION G E F Fig 2 Fig 3 Fig 4 Instructions relating to heating are applicable only to HEAT COOL MODEL Reverse Cycle NAME OF PARTS Fig 6 Fig 1 Fig 8 Fig 7 Fig 5 G E F ...

Page 5: ... flash simultaneously To stop the test operation mode either press the TEST RUN button once again or press the START STOP button to stop the air conditioner V Remote Control Unit Display Fig 8 W Transmit Indicator X Clock Display Y Operating Mode Display Z Timer Mode Display Fan Speed Display Temperature Set Display Timer Set Indicator Temperature Set Indicator Fig 1 Indoor Unit 1 Operating Contro...

Page 6: ...de to open it Slide in the direction of the arrow while pressing the mark 2 Insert batteries Be sure to align the battery polarities correctly 3 Close the battery compartment lid Set the Current time 1 Press the TIME ADJUST button Use the tip of a ball point pen or other small object to press the button 2 Use the SET TIME buttons to adjust the clock to the current time button Press to advance the ...

Page 7: ... the entire display will reappear The thermostat setting should be considered a standard value and may differ somewhat from the actual room temperature To Set the Fan Speed Press the FAN CONTROL button Each time the button is pressed the fan speed changes in the following order AUTO HIGH MED LOW About three seconds later the entire display will reappear When set to AUTO Heating Fan operates so as ...

Page 8: ... very low fan speed for about 3 to 5 minutes after which it will switch to the selected fan set ting This period of time is provided to allow the indoor unit to warm up before begin full operation 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 ...

Page 9: ... STOP button To Change Operating Conditions If you wish to change the operating conditions Mode Fan Speed Thermostat Setting after making the timer setting wait until the entire display reappears then press the appropriate buttons to change the operating condition desired To Cancel the Timer Use the TIMER button to select TIMER RESET The air conditioner will return to normal operation To Change th...

Page 10: ...ooling Dry operation When the SLEEP timer is set the thermostat setting is auto matically raised 1 C every sixty minutes When the thermo stat has been raised a total of 2 C the thermostat setting at that time is maintained until the set time has elapsed at which time the air conditioner automatically turns off SLEEP timer setting 2 C 3 C 4 C 30 minutes 1 C 1 hour 1 hour 30 minutes Set time Set tim...

Page 11: ...g 10 ADJUSTING THE DIRECTION OF AIR CIRCULATION Instructions relating to heating are applicable only to HEAT COOL MODEL Reverse Cycle Vertical up down direction of airflow is adjusted by pressing the remote control unit s AIR FLOW DIRECTION VERTICAL SET button Horizontal right left direction of airflow is adjusted by pressing the remote control unit s AIR FLOW DIRECTION HORIZONTAL SET button DANGE...

Page 12: ...he air UP DOWN direction flaps in the range 4 to 6 for long periods of time since water vapor may condense near the outlet port and drops of water may drip from the air conditioner To select Horizontal airflow SWING Operation Press the AIR FLOW DIRECTION HORIZONTAL SWING button The SWING indicator lamp HORIZONTAL SWING will light In this mode the RIGHT LEFT air direction louvers will swing automat...

Page 13: ...he intake grille fully to remove 2 Clean with water Remove dust with a vacuum cleaner wipe the unit with warm water then dry with a clean soft cloth 3 Replace the intake grille 1 Holding the intake grille horizontally fasten the two upper hooks on the unit 2 Press the intake grille down at the lower sides to close Intake Grille Air filter handle Hooks two places Intake Grille Hooks two places Befo...

Page 14: ...result of minute expansion and contraction of the front cover due to temperature changes During Heating operation a sizzling sound may be heard occa sional This sound is produced by the Automatic Defrosting op eration 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 oper...

Page 15: ... 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 Heat pump air conditioners heat your...

Page 16: ...umidifying and air circulation of rooms in ordinary dwellings Should the power supply to the air conditioner be inter rupted by a power failure the air conditioner will restart automatically in the previously selected mode once the power is restored Should a power failure occur during TIMER operation the timer will be reset and the unit will begin or stop operating under the new timer setting In t...

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