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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 AOT18F

Page 1: ... MOUNTED TYPE KEEP THIS MANUAL FOR FUTURE REFERENCE FUJITSU GENERAL LIMITED OPERATING MANUAL Indoor Unit AST18FB AST18UB AST24FB AST24UB AST30FB AST30UB Outdoor Unit AOT18F AOT18U AOT24F AOT24U AOT30F AOT30U P N9369993022 ...

Page 2: ...pply cord Turn off power source when not using the unit for extended periods Always turn off the electrical breaker or disconnect the power supply plug whenever cleaning the air conditioner or the air filter Connection valves become hot during Heating handle with care Check the condition of the installation stand for damage Do not place animals or plants in the direct path of the air flow Do not d...

Page 3: ...lowered during 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 dir...

Page 4: ...3 9 B C 7 6 5 4 8 2 D SWING SWING TIMER OPERATION 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 E G F E G F ...

Page 5: ...dicator lamps will flash simultaneously To stop the test operation mode press the START STOP button to stop the air condi tioner 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 Control Panel Fig 2 2 MANUAL AUTO ...

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 beginning 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 ...

Page 9: ... the START 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...

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: ...st five seconds to display the current signal code initially set to 3 Press the buttons Fig 6 J to change the signal code between Match the code on the dis play to the air conditioner signal code 4 Press the MASTER CONTROL button again to return to the clock display The signal code will be changed SELECTING THE REMOTE CONTROL UNIT SIGNAL CODE To operate only one of multiple air conditioners If no ...

Page 15: ...of minute expansion and contraction of the front cover due to temperature changes During Heating operation a sizzling sound may be heard occa sionally 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 operation...

Page 16: ...sult authorized service personnel OPERATING TIPS Heating Performance 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 conjunctio...

Page 17: ...e unit is used for long pe riods under high humidity conditions condensation may form on the surface of the indoor unit and drip onto the floor or other objects un derneath Outdoor Unit AOT18F AOT24F AOT30F AOT18U AOT24U AOT30U Outdoor Temperature About 21 to 43 C About 0 to 43 C Temperature and Humidity Range COOLING DRY MODE COOLING MODELS HEAT COOL MODELS Reverse Cycle If the air conditioner is...

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