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Fujitsu AST12 - page 1
KEEP THIS MANUAL FOR FUTURE REFERENCE FUJITSU GENERAL LIMITED P/N9373538035 Indoor Unit AST7 SERIES AST9 SERIES AST12 SERIES AIR CONDITIONER W ALL MOUNTED TYPE OPERA TING MANUAL ...
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Fujitsu AST12 - page 2
1 CONTENTS SAFETY PRECAUTIONS .......................................... 1 FEA TURES AND FUNCTIONS ................................. 2 NAME OF P AR TS ...................................................... 3 PREP ARA TION .......................................................... 5 OPERA TION ........................................................ ...
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Fujitsu AST12 - page 3
2 FEA TURES AND FUNCTIONS Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle). AUTOMATIC OPERATION * ● HEA T & COOL MODEL (REVERSE CYCLE) Merely press the START/STOP button, and the unit will begin automatic operation in either the Heating, Cool- ing, Dry or Monitor modes as appropriate, in ...
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Fujitsu AST12 - page 4
3 D E F K M G H I L N J O T U V W X Q S R P NAME OF P AR TS Fig. 5 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 7 T o facilitate explanation, the accompanying illustra- tion has been drawn to show all possible indicators; in actual operation, however , the display will only show those indicators appropriate to the current op- eration. Fig. 6 Instructions relat ...
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Fujitsu AST12 - page 5
4 Fig. 5 Remote Control Unit D SLEEP button E MASTER CONTROL button F SET TEMP./SET TIME buttons ( ) G Signal T ransmitter H TIMER button I F AN CONTROL button J ST ART/STOP button K AIR FLOW DIRECTION button L SWING LOUVER button M TIME ADJUST button N ACL button Rear side (Fig. 6) O TEST RUN ● T ouch the two metal contacts with a me- tallic obj ...
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Fujitsu AST12 - page 6
5 T urn on the Power T urn on the circuit breaker . Load Batteries (R03/LR03 × × × × × 2) 1 Press and slide the battery compartment lid on the re- verse side 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. Se ...
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Fujitsu AST12 - page 7
6 To Select Mode Operation 1 Press the ST ART/STOP button (Fig. 5 J ). The indoor unit’s OPERATION indicator lamp (red) (Fig. 3 5 ) will light. The air conditioner will start operating. 2 Press the MASTER CONTROL button (Fig. 5 E ) to se- lect the desired mode. Each time the button is pressed, the mode will change in the following order: AUTO COO ...
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Fujitsu AST12 - page 8
7 When set to AUTO: * Heating : Fan operates so as to optimally circulate warmed air . However , 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 thermostat setting, the fan speed becomes slower . * Fan: HEA T & COOL MODEL (REVERSE ...
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Fujitsu AST12 - page 9
8 * During Heating mode: Set the thermostat to a temperature set- ting 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 set- ting that is lower than the current room temperature. The Coolin ...
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Fujitsu AST12 - page 10
9 To Use the ON timer or OFF timer 1 Press the ST ART/STOP button (Fig. 5 J ) (if the unit is already operating, proceed to step 2). The indoor unit’s OPERATION indicator lamp (red) (Fig. 3 5 ) will light. 2 Press the TIMER button (Fig. 5 H ) to select the OFF timer or ON timer operation. Each time the button is pressed the timer function changes ...
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Fujitsu AST12 - page 11
10 SLEEP TIMER OPERA TION Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle). Unlike other timer functions, the SLEEP timer is used to set the length of time until air conditioner operate is stopped. To Use the SLEEP timer While the air conditioner is operating or stopped, press the SLEEP button ...
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Fujitsu AST12 - page 12
11 ADJUSTING THE DIRECTION OF AIR CIRCULA TION 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 button. Hori- zontal (right-left) airflow direction is adjusted manually, by moving the ...
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Fujitsu AST12 - page 13
12 ● The range of swing is relative to the currently set airflow direction. ● If the swing range is not as desired, use the Remote Con- trol Unit’ s AIR FL O W DIRECTION button to c hange the range of swing. SWING OPERA TION Begin air conditioner operation before performing this procedure. T o select SWING Operation Press the SWING LOUVER but ...
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Fujitsu AST12 - page 14
13 ● Before cleaning the air conditioner, be sure to turn it off and disconnect the power supply cord. ● Be sure the intake grille (Fig. 1 8 ) is installed securely . ● When removing and replacing the air filters, be sure not to touc h the heat exchanger , as personal injury may result. CLEANING AND CARE CAUTION! Cleaning the Intake Grille 1. ...
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Fujitsu AST12 - page 15
14 Air Cleaning Filter Installation 1. Open the intake grille and remove the air filters. 3. Install the two air filters and close the intake grille. 1 2 2 1 Intake Grille Intake Grille Mounting shaft Knob 2. Install the air cleaning filter set (set of 2). 1 Set the air cleaning filter into the air cleaning filter frame. 2 Engage the latc h at both ...
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Fujitsu AST12 - page 16
15 Replacing dirty Air cleaning filters Please purc hase the separately sold replacement air clean- ing filters and install them. 1. Open the intake grille and remove the air filters. CLEANING AND CARE 1 2 2 1 Intake Grille Intake Grille Mounting shaft Knob 2. Replace them by two new air cleaning filters. 1 Remove the old air cleaning filters in re ...
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Fujitsu AST12 - page 17
16 TROUBLESHOOTING Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle). In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the Power Supply Plug or turn off the circuit breaker, and consult authorized service personnel. Merely turning off the unit’ s powe ...
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Fujitsu AST12 - page 18
17 In Event of Power Interruption TROUBLESHOOTING Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle). Symptom Doesn’t operate at all: Poor Cooling (or *Heating) performance: The unit operates differently from the remote control unit’ s setting: See page — 9 — 7 5 CHECK ONCE MORE Items to ...
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Fujitsu AST12 - page 19
18 OPERA TING TIPS Multi-type Air conditioner This indoor unit can be connected to a multi-type outdoor unit. The multi-type air conditioner allows multiple indoor units to be operated in multiple locations. The indoor units may be operated simultaneously, in accordance with their respective output. Instructions relating to inverter ( ❖ ) are app ...
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Fujitsu AST12 - page 20
19 ● Acoustic Noise Information: The maximum sound pressure level is less than 70 dB (A) for both indoor unit and outdoor unit. According to IEC 704-1 and ISO 3744. ● If the air conditioner is operated under higher temperature conditions than those listed, the built-in protection circuit may operate to prevent internal circuit damage. Also, dur ...
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