Communication problems can result from any of the following:
- Improperly set IPC address dipswitch on module.
- Opens or shorts in the twisted pair IPC wiring or connectors.
- Loss of power to a module.
- Internal module failure (check module test points).
- Improper connections on terminal J2.
- High levels of EMI (Electro-Magnetic Interference)
- Module specific function selected without the Options Module.
Refer to troubleshooting information in bulletin RLC-SVD03A-EN.
Additional details
Facts
- Air-Cooled Chiller (Pueblo) (RTAA 130-400 Ton)
- Air-Cooled Chiller (Pueblo) (RTAA 70-125 Ton)
- Compressor Chiller (Pueblo) (RTUA)
- Water-Cooled Chiller (Pueblo) (RTWA)