background image

10

TIMER OPERATION

SLEEP TIMER OPERATION

30
minutes

1 hour

1 hour
30 minutes

Set time

Set time

1 hour

°

C

°

C

SLEEP

TIMER

   SET

TIME

  SET

TEMP 

MASTER

CONTROL

FAN

CONTROL

.

SLEEP

COOL

About the PROGRAM timer

The PROGRAM timer allows you to integrate OFF timer
and ON timer operations in a single sequence. The se-
quence can involve one transition from OFF timer to ON
timer, or from ON timer to OFF timer, within a twenty-
four hour period.

The first timer function to operate will be the one set near-
est to the current time. The order of operation is indi-
cated by the arrow in the remote control unit’s display
(OFF 

 ON, or OFF 

 ON).

One example of PROGRAM timer use might be to have
the air conditioner automatically stop (OFF timer) after
you go to sleep, then start (ON timer) automatically in
the morning before you rise.

About the ON timer

The timer function is designed to bring your room to a
comfortable temperature by the set time; as a result, the
unit automatically begins operation before the set time
so that the room reaches the desired temperature by the
time set on the timer (“Nice-Morning Timer”).

The hotter it is in summer, or the colder it is in winter, the
earlier that operation will begin.

* During Heating Operation ....... from 45 to 10 minutes be-

fore set time.

During Cooling/Dry Operation ... from 20 to 10 minutes be-

fore set time.

During Fan Operation .............. at the set time.

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

Unlike other timer functions, the SLEEP timer is designed to set the duration of time in which the unit does not operate.

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.

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.

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:

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

°

C

°

C

°

C

°

C

Summary of Contents for AOT20AN

Page 1: ...TED TYPE OPERATING MANUAL P N9360503022 Indoor Unit AST20AG AST20RG AST24AG AST24RG AST30AG AST30RG Outdoor Unit AOT20AN AOT20RN AOT24AN AOT24RN AOT30AB AOT30RB KEEP THIS OPERATION MANUAL FOR FUTURE REFERENCE FUJITSU GENERAL LIMITED ...

Page 2: ...hands Do not pull power supply cord Turn off power source when not using the unit for extended periods 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 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 ap...

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: ...ET TIME SET TEMP MASTER CONTROL FAN CONTROL START STOP SET ENERGY SAVE TIME ADJUST TEST RUN ACL SET SWING SWING CLOCK OFF ON TIMER RESET TIMER SLEEP H M OFF AUTO COOL DRY FAN ENERGY SAVE HEAT ON A AUTO HIGH MED LOW H K L M N O W Z X Y P Q R S T U I J V CLOCK COOL AUTO Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 Fig 1 Fig 8 Fig 7 ...

Page 5: ...ROL Button N START STOP Button O Battery compartment lid Inside of the battery compartment lid Fig 7 P AIR FLOW DIRECTION Button Q ENERGY SAVE Button R CODE CHANGE Slide Switch Switching the remote control unit code Max 4 units S TIME ADJUST Button T TEST RUN Button This button is used when installing the air conditioner and should not be used under normal conditions as it will cause the air condi...

Page 6: ...es 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 time button Press to reverse the time Each time the buttons are pressed the time will be a...

Page 7: ...be used to set room temperature during the FAN mode the temperature will not appear on the remote control unit s display About three seconds later 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 change...

Page 8: ...tisfactory see page 7 for instructions on changing the mode setting HEAT COOL DRY FAN Heating Use to warm your room 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 set ting This period of time is provided to allow the indoor unit to warm up before begin full operation When the room temperat...

Page 9: ...dicator lamp green will light 3 Press the TIMER button to select the PROGRAM timer operation either OFF ON or OFF ON will display The display will alternately show OFF timer and ON timer then change to show the time setting for the operation to occur first The PROGRAM timer will begin operation If the ON timer has been selected to operate first the unit will stop operating at this point About five...

Page 10: ...tion of time in which the unit does not operate 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 flashi...

Page 11: ...air direction and room temperature should be considered carefully when making settings Example When set to vertical air direc tion Example When set to horizontal air di rection Vertical Air Direction Adjustment Press the AIR FLOW DIRECTION VERTICAL SET button Each time the button is pressed the air direction range will change as follows 1 2 3 4 5 6 7 Types of Air flow Direction Setting 1 2 3 4 Dur...

Page 12: ...ange 5 to 7 for long periods of time since water vapor may con dense near the outlet louvers 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 orange will light In this mode the RIGHT LEFT air direction louvers will swing automatically to direct the airflow...

Page 13: ...t set ENERGY SAVE setting During Cooling Dry operation The thermostat temperature setting increases by 1 C as soon as the ENERGY SAVE button is pressed and then increases by another 1 C after one hour has passed Afterwards energy consumption is saved by continuing to cool or dry at a thermostat temperature of 2 C more than that set ENERGY SAVE setting To Cancel the ENERGY SAVE Press the ENERGY SAV...

Page 14: ...urned properly to their holes in the panel 2 Close the intake grille For purposes of example the illustration shows the unit without intake grille installed Dust can be cleaned from the air filter either with a vacuum cleaner or by washing the filter in a solution of mild de tergent and warm water If you wash the filter be sure to allow it to dry thoroughly in a shady place before rein stalling If...

Page 15: ...action 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 operation a thin mist may be seen emitte...

Page 16: ...ent 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 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 Microcomputer controlled Automatic Defrosting When using ...

Page 17: ...derneath Heating Mode About 0 to 21 C AST20RG AST24RG Models About 5 to 21 C AST30RG Model About 30 C or less COOLING MODEL HEAT COOL MODEL Reverse Cycle Outdoor temperature Indoor temperature Indoor humidity If the air conditioner is used under higher temperature conditioner than those listed the built in protection circuit may operate to prevent internal circuit damage Also during Cooling and Dr...

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