General Assist Technical Reference
S Series Indoor Unit Controller Compatibility
Compatible controller options for S Series indoor units
The following controller options are listed as suitable for S Series indoor units. Controller capability and maximum connected group / indoor-unit quantities vary by controller type.
Compatible controllers
| Controller type | Model(s) | Key capability / notes |
|---|---|---|
| PC Controller (Software) | UTR-YOTB | Maximum 400 groups / 400 indoor units. Includes monitoring of operating status. |
| Central Remote Controller | UTB-YCA UTB-GCA | Maximum 64 groups / 400 indoor units. Includes weekly timer. |
| Group Remote Controller | UTB-YDB UTB-GDB | Maximum 8 remote-controller groups (32 indoor units). Includes weekly timer. |
| Wired Remote Controller | UTB-YUB UTB-GUB UTB-TUB | On / Off weekly timer. Built-in thermo sensor. |
| Simple Remote Controller | With master control: UTB-YPB UTB-GPB UTB-TPB Without master control: UTB-YRA UTB-GRA UTB-TRA | Background light and simplified operation. |
| Wireless Remote Controller | UTB-YVB UTB-GVB | On / Off sleep and program timer. Easy operation. |
Important: The information above is a compatibility reference for S Series indoor units. Always confirm the specific indoor-unit model and controller requirements before replacement or retrofit work.
Quick reference
- Large centralised systems: use the PC Controller or Central Remote Controller options.
- Grouped indoor units: the Group Remote Controller supports up to 8 remote-controller groups / 32 indoor units.
- Individual wired control: UTB-YUB, UTB-GUB or UTB-TUB.
- Simplified local control: UTB-YPB / GPB / TPB or UTB-YRA / GRA / TRA depending on master-control requirement.
- Wireless control: UTB-YVB or UTB-GVB.