Daikin SkyAir RZQ-P Series Service Manual page 3

SiUS28-902_B
Part 2
Refrigerant Circuit ............................................................. 5
1. Refrigerant Circuit ...................................................................................6
2. Functional Parts Layout ........................................................................10
Part 3
Function ........................................................................... 11
1. Operation Mode ....................................................................................12
2. Basic Control.........................................................................................13
3. Special Control......................................................................................17
4. Protection Control .................................................................................23
5. Other Control ........................................................................................27
6. Outline of Control (Indoor Unit) .............................................................27
Table of Contents
1.1 RZR18 / 24 / 30PVJU
RZQ18 / 24 / 30PVJU(9) .......................................................................... 6
1.2 RZR36 / 42PVJU
RZQ36 / 42PVJU(9) ................................................................................. 8
2.1 RZR18 / 24 / 30PVJU
RZQ18 / 24 / 30PVJU (9) ....................................................................... 10
2.1 Normal Operation................................................................................... 13
2.2 Compressor PI Control .......................................................................... 14
2.3 Electronic Expansion Valve PI Control .................................................. 15
2.4 Cooling Operation Fan Control .............................................................. 16
3.1 Startup Control ....................................................................................... 17
3.2 Oil Return Operation .............................................................................. 18
3.3 Defrosting Operation .............................................................................. 20
3.4 Pump Down Residual Operation............................................................ 21
3.5 Restart Standby ..................................................................................... 21
3.6 Stopping Operation ................................................................................ 22
3.7 Pressure Equalization Prior to Startup ................................................... 22
4.1 High Pressure Protection Control .......................................................... 23
4.2 Low Pressure Protection Control ........................................................... 24
4.3 Discharge Pipe Protection Control ......................................................... 25
4.4 Inverter Protection Control ..................................................................... 26
5.1 Heating Operation Prohibition ................................................................ 27
6.1 Drain Pump Control ............................................................................... 27
6.2 Louver Control for Preventing Ceiling Dirt ............................................. 29
6.3 Room Temperature Thermistor in Remote Controller............................ 30
6.4 Freeze-up Prevention ............................................................................ 32
6.5 View of Operations of Swing Flaps ........................................................ 33
6.6 Hot Start Control (In Heating Operation Only) ....................................... 34
6.7 Heater Control (Only for FTQ) ............................................................... 36
6.8 4 Step Thermostat Processing (Only for FTQ)....................................... 39
6.9 Interlocked with External Equipment (Only for FTQ).............................. 40
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