Table Of Contents - Fujitsu AGYG09KVCB Service Manual

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 ......................................................................04-5
1-5. Compressor frequency limitation by outdoor temperature ..............................................04-6
2. Auto changeover operation........................................................................04-7
3. Fan control...................................................................................................04-9
3-1. Indoor fan control............................................................................................................04-9
3-2. Outdoor fan control.......................................................................................................04-14
4. Louver control ...........................................................................................04-17
4-1. Vertical airflow direction louver control .........................................................................04-17
4-2. 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. 10 °C HEAT operation ..................................................................................................04-26
7-5. ECONOMY operation ...................................................................................................04-26
7-6. POWERFUL operation .................................................................................................04-27
7-7. Fresh air control............................................................................................................04-27
7-8. Compressor preheating ................................................................................................04-27
7-9. Electronic expansion valve control ...............................................................................04-28
7-10. Prevention to restart for 3 minutes (3 minutes st) .......................................................04-28
7-11. 4-way valve control.....................................................................................................04-28
7-12. 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. High pressure protection ..............................................................................................04-31
8-6. Low outdoor temperature protection.............................................................................04-31
8-7. High temperature and high pressure release control ....................................................04-31
CONTENTS