Table Of Contents - Daikin FCQ18PVJU Service Manual

SkyAir Inverter P Series
R-410A Heat Pump 60Hz
1. Introduction ............................................................................................. v
Part 1 General Information........................................................... 1
1. Model Names and Power Supply............................................................2
2. External Appearance ..............................................................................3
Part 2 Specifications .................................................................... 4
1. Specifications ..........................................................................................5
Part 3 List of Electrical and Functional Parts ............................. 8
1. List of Electrical and Functional Parts .....................................................9
Part 4 Refrigerant Circuit ........................................................... 11
1. Refrigerant Circuit .................................................................................12
2. Functional Parts Layout ........................................................................14
Part 5 Function ........................................................................... 15
1. Operation Mode ....................................................................................16
2. Basic Control.........................................................................................17
3. Special Control......................................................................................21
i
1.1 Safety Considerations for Repair ............................................................. v
1.2 Safety Considerations for Users ............................................................. vi
2.1 Indoor Units.............................................................................................. 3
2.2 Outdoor Units ........................................................................................... 3
1.1 FCQ ......................................................................................................... 5
1.2 FHQ ......................................................................................................... 6
1.3 FAQ.......................................................................................................... 7
1.1 Outdoor Units ........................................................................................... 9
1.2 Indoor Units............................................................................................ 10
1.1 RZQ18·24·30PVJU ................................................................................ 12
2.1 RZQ18·30PVJU ..................................................................................... 14
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
SiUS28-902_a

Table of Contents