Fujitsu AUXG18KVLA Service Manual page 144

4. CONTROL AND FUNCTIONS
1. Compressor frequency control..................................................................04-1
1-1. Cooling operation ...........................................................................................................04-1
1-2. Heating operation ...........................................................................................................04-5
1-3. Dry operation ..................................................................................................................04-5
1-4. Compressor frequency at normal start-up ......................................................................04-6
1-5. Compressor frequency limitation by outdoor temperature ..............................................04-8
2. Auto changeover operation......................................................................04-10
3. Fan control.................................................................................................04-12
3-1. Indoor fan control..........................................................................................................04-12
3-2. Outdoor fan control.......................................................................................................04-18
4. Louver control ...........................................................................................04-20
4-1. Individual louver control(For Compact cassette type) ...................................................04-20
4-2. All louver control(For Compact cassette type) ..............................................................04-20
4-3. Swing operation(For Compact cassette type)...............................................................04-21
5. Timer operation control ............................................................................04-22
5-1. Wireless remote control ................................................................................................04-22
5-2. Wired remote control ....................................................................................................04-24
6. Defrost operation control .........................................................................04-27
6-1. Defrost operation in heating operation stopped ............................................................04-28
7. Various control ..........................................................................................04-29
7-1. Auto restart ...................................................................................................................04-29
7-2. 10 °C HEAT operation ..................................................................................................04-29
7-3. ECONOMY operation ...................................................................................................04-29
7-4. Fresh air control............................................................................................................04-29
7-5. Compressor preheating ................................................................................................04-30
7-6. External electrical heater control ..................................................................................04-30
7-7. Electronic expansion valve control ...............................................................................04-30
7-8. Drain pump control .......................................................................................................04-31
7-9. Prevention to restart for 3 minutes (3 minutes st) .........................................................04-32
7-10. 4-way valve control.....................................................................................................04-32
7-11. Peak cut operation .....................................................................................................04-32
7-12. Outdoor unit low noise operation ................................................................................04-33
8. Various protections...................................................................................04-34
8-1. Discharge gas temperature over-rise prevention control ..............................................04-34
8-2. Anti-freezing control (cooling and dry mode) ................................................................04-34
8-3. Current release control .................................................................................................04-35
8-4. Low pressure protection control (cooling mode) ...........................................................04-36
8-5. Indoor unit fan motor over temperature protection........................................................04-37
8-6. Compressor temperature protection ............................................................................04-37
8-7. High pressure protection ..............................................................................................04-38
CONTENTS