Part 4 Function - Daikin RXYQ5-48MAY1 Service Manual

Si39-407
1. Function general ...................................................................................74
2. Basic Control.........................................................................................76
3. Special Control......................................................................................85
4. Protection Control .................................................................................94
5. Other Control.........................................................................................99
6. Outline of Control (Indoor Unit) ...........................................................103
Function
1.1 Symbol ...................................................................................................74
1.2 Operation Mode......................................................................................75
2.1 Normal Operation ...................................................................................76
2.2 Compressor PI Control...........................................................................77
2.3 Electronic Expansion Valve PI Control...................................................83
2.4 Step Control of Outdoor Unit Fans .........................................................83
2.5 Outdoor Unit Fan Control in Cooling Operation .....................................84
3.1 Startup Control .......................................................................................85
3.2 Oil Return Operation ..............................................................................86
3.3 Defrosting Operation ..............................................................................88
3.4 Pump-down Residual Operation ............................................................89
3.5 Standby ..................................................................................................90
3.6 Stopping Operation ................................................................................91
3.7 Pressure Equalization prior to Startup....................................................93
4.1 High Pressure Protection Control...........................................................94
4.2 Low Pressure Protection Control............................................................95
4.3 Discharge Pipe Protection Control .........................................................96
4.4 Inverter Protection Control .....................................................................97
4.5 STD Compressor Overload Protection...................................................98
4.6 Injection Control (only for RXYQ5MA)....................................................98
5.1 Outdoor Unit Rotation.............................................................................99
5.2 Emergency Operation ..........................................................................100
5.3 Demand Operation ...............................................................................102
5.4 Heating operation prohibition ...............................................................102
6.1 Drain Pump Control..............................................................................103
6.2 Louver Control for Preventing Ceiling Dirt............................................105
6.3 Thermostat Sensor in Remote Controller.............................................106
6.4 Thermostat Control While in Normal Operation ...................................108
6.5 Thermostat Control in Dry Operation ...................................................108
6.6 Freeze Prevention ................................................................................109
6.7 Control of Outdoor Air Processing Unit
(Unique Control for Outdoor Air Processing Unit) ................................110
6.8 Heater Control ......................................................................................113
6.9 List of Swing Flap Operations ..............................................................114
Part 4 Part 4 Part 4 Part 4
Function Function Function Function
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