Part 4 Function - Daikin CMSQ200A7W1B Service Manual

SiBE28-805
1. Function General...................................................................................32
2. Basic Control.........................................................................................34
3. Special Control......................................................................................39
4. Protection Control .................................................................................47
5. Other Control.........................................................................................52
6. Outline of Control (Indoor Unit) .............................................................53
Function
1.1 Symbol ...................................................................................................32
1.2 Operation Mode......................................................................................33
2.1 Normal Operation ...................................................................................34
2.2 Compressor PI Control...........................................................................35
2.3 Electronic Expansion Valve PI Control...................................................37
2.4 Step Control of Outdoor Unit Fans .........................................................37
2.5 Outdoor Unit Fan Control in Cooling Operation .....................................38
3.1 Startup Control .......................................................................................39
3.2 Oil Return Operation ..............................................................................40
3.3 Defrosting Operation ..............................................................................42
3.4 Pump-down Residual Operation ............................................................43
3.5 Standby ..................................................................................................44
3.6 Stopping Operation ................................................................................45
4.1 High Pressure Protection Control...........................................................47
4.2 Low Pressure Protection Control............................................................48
4.3 Discharge Pipe Protection Control .........................................................49
4.4 Inverter Protection Control .....................................................................50
4.5 Injection Control (only for CMSQ200A7) ................................................51
5.1 Demand Operation .................................................................................52
5.2 Heating Operation Prohibition ................................................................52
6.1 Drain Pump Control................................................................................53
6.2 Louver Control for Preventing Ceiling Dirt..............................................55
6.3 Thermostat Sensor in Remote Controller...............................................56
6.4 Thermostat Control while in Normal Operation ......................................58
6.5 Thermostat Control in Dry Operation .....................................................58
6.6 Electronic Expansion Valve Control .......................................................59
6.7 Hot Start Control (In Heating Operation Only)........................................59
6.8 Freeze Prevention ..................................................................................60
6.9 Heater Control ........................................................................................60
6.10 List of Swing Flap Operations ................................................................61
Part 4
Function
31