Part 5 Function - Daikin FCQ18PVJU Service Manual

1. Operation Mode ....................................................................................16
2. Basic Control.........................................................................................17
3. Special Control......................................................................................21
4. Protection Control .................................................................................29
5. Other Control ........................................................................................33
6. Outline of Control (Indoor Unit) .............................................................34
15
2.1 Normal Operation................................................................................... 17
2.2 Compressor PI Control .......................................................................... 18
2.3 Electronic Expansion Valve PI Control .................................................. 19
2.4 Cooling Operation Fan Control .............................................................. 20
3.1 Startup Control....................................................................................... 21
3.2 Oil Return Operation .............................................................................. 22
3.3 Defrosting Operation .............................................................................. 24
3.4 Pump-down Residual Operation ............................................................ 25
3.5 Restart Standby ..................................................................................... 26
3.6 Stopping Operation ................................................................................ 27
3.7 Pressure Equalization Prior to Startup ................................................... 28
4.1 High Pressure Protection Control .......................................................... 29
4.2 Low Pressure Protection Control ........................................................... 30
4.3 Discharge Pipe Protection Control ......................................................... 31
4.4 Inverter Protection Control ..................................................................... 32
5.1 Heating Operation Prohibition ................................................................ 33
6.1 Drain Pump Control ............................................................................... 34
6.2 Louver Control for Preventing Ceiling Dirt ............................................. 36
6.3 Operation Range of Remote Controller Temperature Sensor................ 37
6.4 Freeze Prevention.................................................................................. 39
6.5 View of Operations of Swing Flaps ........................................................ 40
SiUS28-902_a
Part 5
Function
Function