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CONTENTS

4. CONTROL AND FUNCTIONS

1. Compressor frequency control..................................................................04-1

1-1. Cooling operation ...........................................................................................................04-1

1-2. Heating operation ...........................................................................................................04-3

1-3. Dry operation..................................................................................................................04-4

1-4. Compressor frequency at normal start-up ......................................................................04-4

1-5. Compressor frequency limitation by outdoor temperature ..............................................04-5

2. Auto changeover operation........................................................................04-7

3. Fan control...................................................................................................04-9

3-1. Indoor fan control............................................................................................................04-9

3-2. Outdoor fan control.......................................................................................................04-13

4. Louver control ...........................................................................................04-16

4-1. Horizontal louver control...............................................................................................04-16

4-2. Vertical louver control ..................................................................................................04-16

4-3. Swing operation............................................................................................................04-17

5. Timer operation control ............................................................................04-18

5-1. Wireless remote control................................................................................................04-18

5-2. Wired remote control ....................................................................................................04-20

6. Defrost operation control .........................................................................04-23

6-1. Defrost operation in heating operation stopped ............................................................04-24

7. Various control..........................................................................................04-25

7-1. Auto restart...................................................................................................................04-25

7-2. MANUAL AUTO operation............................................................................................04-25

7-3. Forced cooling operation ..............................................................................................04-26

7-4. MIN. HEAT operation ...................................................................................................04-26

7-5. ECONOMY operation ...................................................................................................04-26

7-6. POWERFUL operation ................................................................................................04-27

7-7. Compressor preheating ................................................................................................04-27

7-8. Electronic expansion valve control ...............................................................................04-27

7-9. Prevention to restart for 3 minutes (3 minutes st) .........................................................04-28

7-10. 4-way valve control.....................................................................................................04-28

7-11. Outdoor unit low noise operation ................................................................................04-28

8. Various protections...................................................................................04-29

8-1. Discharge gas temperature over-rise prevention control ..............................................04-29

8-2. Anti-freezing control (cooling and dry mode) ................................................................04-29

8-3. Current release control .................................................................................................04-30

8-4. Cooling pressure over-rise protection...........................................................................04-30

8-5. Low outdoor temperature protection.............................................................................04-30

8-6. High temperature and high pressure release control....................................................04-31

Fujitsu ASUG12LZAS User Manual

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