Daikin BSVQ36MVJU, Serivce Manual

Page: 2 / 273

SiUS39-601
Table of Contents i
R-410A Heat Pump
60Hz
1. Introduction ................................................................................................ vi
1.1 Safety Cautions ............................................................................................vi
1.2 PREFACE .................................................................................................... x
Part 1 General Information .............................................................. 1
1. Model Names of Indoor/Outdoor Units........................................................ 2
2. External Appearance...................................................................................3
2.1 Indoor Units .................................................................................................. 3
2.2 Outdoor Units ............................................................................................... 3
3. Model Selection........................................................................................... 4
Part 2 Specifications ....................................................................... 5
1. Specifications .............................................................................................. 6
1.1 Outdoor Units ............................................................................................... 6
1.2 Indoor Units ................................................................................................ 11
Part 3 Refrigerant Circuit .............................................................. 23
1. Refrigerant Circuit .....................................................................................24
1.1 RXYQ72M, 96M ......................................................................................... 24
2. Functional Parts Layout ............................................................................26
2.1 RXYQ72M, 96M ......................................................................................... 26
3. Refrigerant Flow for Each Operation Mode...............................................27
Part 4 Function............................................................................... 31
1. Operation Mode ........................................................................................32
2. Basic Control.............................................................................................33
2.1 Normal Operation ....................................................................................... 33
2.2 Compressor PI Control............................................................................... 34
2.3 Electronic Expansion Valve PI Control....................................................... 38
2.4 Cooling Operation Fan Control................................................................... 39
3. Special Control..........................................................................................40
3.1 Startup Control ........................................................................................... 40
3.2 Oil Return Operation .................................................................................. 41
3.3 Defrosting Operation .................................................................................. 43
3.4 Pump-down Residual Operation ................................................................ 44
3.5 Restart Standby .......................................................................................... 45
3.6 Stopping Operation .................................................................................... 46