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CONTENTS

1. CONTROL AND FUNCTIONS

1. Compressor frequency control..................................................................01-1

1-1. Cooling operation ...........................................................................................................01-1

1-2. Heating operation ...........................................................................................................01-3

1-3. Dry operation..................................................................................................................01-4

1-4. Compressor frequency at normal start-up ......................................................................01-5

1-5. Compressor frequency limitation by outdoor temperature ..............................................01-6

2. Auto changeover operation........................................................................01-8

3. Fan control.................................................................................................01-10

3-1. Indoor fan control..........................................................................................................01-10

3-2. Outdoor fan control.......................................................................................................01-13

4. Timer operation control ............................................................................01-17

4-1. Wireless remote control................................................................................................01-17

4-2. Wired remote control ....................................................................................................01-19

5. Defrost operation control .........................................................................01-22

5-1. Defrost operation in heating operation stopped ............................................................01-23

6. Various control..........................................................................................01-24

6-1. Auto restart...................................................................................................................01-24

6-2. 10 °C HEAT operation ..................................................................................................01-24

6-3. ECONOMY operation ...................................................................................................01-24

6-4. Fresh air control............................................................................................................01-24

6-5. Compressor preheating ................................................................................................01-25

6-6. External electrical heater control ..................................................................................01-25

6-7. Electronic expansion valve control ...............................................................................01-25

6-8. Drain pump control .......................................................................................................01-26

6-9. Prevention to restart for 3 minutes (3 minutes st) .........................................................01-29

6-10. 4-way valve control.....................................................................................................01-29

6-11. Outdoor unit low noise operation ................................................................................01-29

7. Various protections...................................................................................01-30

7-1. Discharge gas temperature over-rise prevention control ..............................................01-30

7-2. Anti-freezing control (cooling and dry mode) ................................................................01-30

7-3. Current release control .................................................................................................01-31

7-4. Indoor unit fan motor over temperature protection........................................................01-32

7-5. Compressor temperature protection .............................................................................01-33

7-6. High pressure protection ..............................................................................................01-33

7-7. Low outdoor temperature protection.............................................................................01-33

7-8. High temperature and high pressure release control....................................................01-34

Fujitsu ARXG14KLLAP Service Instruction

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