Table Of Contents - Fujitsu AO G30KBTB Series Service Instruction

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 ..............................................01-7
2. Auto changeover operation........................................................................01-9
3. Fan control.................................................................................................01-11
3-1. Indoor fan control..........................................................................................................01-11
3-2. Outdoor fan control.......................................................................................................01-14
4. Timer operation control ............................................................................01-16
4-1. Wireless remote control ................................................................................................01-16
4-2. Wired remote control ....................................................................................................01-18
5. Defrost operation control .........................................................................01-21
5-1. Defrost operation in heating operation stopped ............................................................01-22
6. Various control ..........................................................................................01-23
6-1. Auto restart ...................................................................................................................01-23
6-2. 10 °C HEAT operation ..................................................................................................01-23
6-3. ECONOMY operation ...................................................................................................01-23
6-4. Compressor preheating ................................................................................................01-24
6-5. External electrical heater control ..................................................................................01-24
6-6. Electronic expansion valve control ...............................................................................01-24
6-7. Drain pump control .......................................................................................................01-25
6-8. 4-way valve control.......................................................................................................01-28
6-9. Peak cut operation........................................................................................................01-28
6-10. 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........................................................01-31
7-5. Compressor temperature protection .............................................................................01-32
7-6. High pressure protection ..............................................................................................01-32
7-7. Low outdoor temperature protection.............................................................................01-32
7-8. High temperature and high pressure release control ....................................................01-33
CONTENTS