Daikin FTKS50BVMB, Service Manual

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SiEN18-622
Table of Contents iii
1. Introduction .......................................................................................... viii
1.1 Safety Cautions ..................................................................................... viii
1.2 Used Icons ............................................................................................. xii
Part 1 List of Functions ................................................................ 1
1. List of Functions ......................................................................................2
1.1 Cooling Only.............................................................................................2
1.2 Heat Pump ...............................................................................................9
Part 2 Specifications .................................................................. 17
1. Specifications ........................................................................................18
1.1 Cooling Only...........................................................................................18
1.2 Heat Pump .............................................................................................34
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 53
1. Printed Circuit Board Connector Wiring Diagram..................................54
1.1 Outdoor Unit ...........................................................................................54
1.2 BP Unit ...................................................................................................59
1.3 Wall Mounted Type 20/25/35 Class .......................................................60
1.4 Wall Mounted Type 50/60/71 Class .......................................................62
1.5 Duct Connected Type.............................................................................64
1.6 Floor / Ceiling Suspended Dual Type.....................................................66
1.7 Floor Standing Type ...............................................................................69
1.8 Ceiling Mounted Cassette 600×600 Type ..............................................72
1.9 Ceiling Mounted Cassette Type (950×950)............................................75
1.10 Ceiling Mounted Built-in Type ................................................................78
1.11 Ceiling Suspended Type ........................................................................80
Part 4 Refrigerant Circuit ........................................................... 83
1. Refrigerant Circuit .................................................................................84
1.1 Outdoor Units .........................................................................................84
1.2 BP Units .................................................................................................86
2. Functional Parts Layout ........................................................................87
2.1 Outdoor Units .........................................................................................87
3. Refrigerant Flow for Each Operation Mode...........................................88
3.1 Cooling Operation ..................................................................................88
3.2 Heating Operation ..................................................................................89
3.3 Cooling Oil Return Operation .................................................................90
3.4 Heating Oil Return Operation & Defrost Operation ................................91
Part 5 Function............................................................................ 93
1. Operation Mode ....................................................................................94
2. Basic Control.........................................................................................95
2.1 Normal Operation ...................................................................................95
2.2 Compressor PI Control...........................................................................96
2.3 Electronic Expansion Valve PI Control...................................................99
2.4 Cooling Operation Fan Control.............................................................100