Service Manual

SiUS281811E
i Table of Contents
Introduction ....................................................................................... 1
1. Safety Cautions...........................................................................................2
1.1 Warnings and Cautions Regarding Safety of Workers................................. 2
1.2 Warnings and Cautions Regarding Safety of Users..................................... 4
2. Icons Used ..................................................................................................7
3. Revision History ..........................................................................................8
Part 1 General Information ............................................................... 9
1. Model Names and Power Supply..............................................................10
1.1 Cooling Only............................................................................................... 10
1.2 Heat Pump ................................................................................................. 11
2. External Appearance.................................................................................12
2.1 Indoor Unit.................................................................................................. 12
2.2 Outdoor Unit ............................................................................................... 13
2.3 Remote Controller ...................................................................................... 14
3. Specifications ............................................................................................15
3.1 Cooling Only............................................................................................... 15
3.2 Heat Pump ................................................................................................. 28
Part 2 Refrigerant Circuit............................................................... 41
1. Refrigerant Circuit (Piping Diagrams) .......................................................42
1.1 RZR18/24TAVJU, RZQ18/24TAVJU.......................................................... 42
1.2 RZR30/36/42/48TAVJU, RZQ30/36/42/48TAVJU...................................... 44
1.3 Indoor Unit.................................................................................................. 46
2. Functional Parts Layout ............................................................................47
2.1 RZR18/24TAVJU, RZQ18/24TAVJU.......................................................... 47
2.2 RZR30/36/42/48TAVJU, RZQ30/36/42/48TAVJU...................................... 49
Part 3 Remote Controller ................................................................ 51
1. Applicable Models .....................................................................................52
2. Names and Functions ...............................................................................53
2.1 Wired Remote Controller............................................................................ 53
2.2 Simplified Remote Controller...................................................................... 56
2.3 Wireless Remote Controller ....................................................................... 57
3. Main/Sub Setting.......................................................................................59
3.1 Wired Remote Controller (BRC1E73) ........................................................ 59
3.2 When Wireless Remote Controller is Used Together................................. 60
4. Address Setting for Wireless Remote Controller.......................................61
5. Centralized Control Group No. Setting......................................................64
5.1 BRC1E73 ................................................................................................... 64
5.2 Wireless Remote Controller ....................................................................... 66
6. Service Settings Menu, Maintenance Menu..............................................67
6.1 BRC1E73 ................................................................................................... 67
6.2 Wireless Remote Controller ....................................................................... 71