Issue:
Loss of Communication with Local Display Panel for RTAA, RTWA, RTUA
Resolution:
The 1U1 Chiller Module has detected a loss of IPC communication with the Local Display (1U6) panel for at least 15 seconds.
- Verify the 1T9 transformer is working...24 VAC should be measured on the secondary feeding the 1U6.
- Remove the shield/cover of the 1U6 and make sure the connectors, flat ribbon cable, and flexible cable are all seated and connected correctly.
- If all connections are good, replace the 1U6 Local Display.
Notes:
Changes:
Other Question/Problem/Cause Statements:
- Loss of Local Panel Communications?
- Loss of Local Display Panel?
- Loss of Communication with the Local Display?
Facts:
- RTAA 70-125 TON (PUEBLO)
- 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)
Document Identifier: DOC-104581
Document Identifier: 104581
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.