Description:

This error code indicates that the Selective Control Valve Unit IV (SV IV) is not receiving the required messages from the SCC (Selective Control Controller). This communication failure can be caused by issues such as network communication problems, faulty controllers, or wiring issues.

Reaction:

When this message is missing, the SV IV may not operate correctly, leading to potential issues with the control valve functions. A diagnostic warning will be displayed on the control panel.

Recommendations:

• Check Network Communication:
  • Ensure that the communication network between the SCC and SV IV is intact. Look for any faults in the CAN bus or other communication lines.
• Inspect Controllers:
  • Verify that both the SCC and SV IV are functioning correctly. Replace any faulty controllers.
• Check Wiring:
  • Examine the wiring associated with the communication network for any signs of damage, loose connections, or corrosion. Repair or replace as necessary.
• Update Software:
  • Ensure that both the SCC and SV IV are running the latest software versions. Update if necessary to fix any bugs that might cause communication issues.

Note:

• Associated Codes:
  • This code may be related to other communication fault codes within the system. Address all related codes to ensure comprehensive resolution.
• Preventive Measures:
  • Regularly inspect and maintain communication networks and controllers to prevent message loss issues. Ensure all connections are secure and components are up-to-date.

By addressing these codes thoroughly, you can ensure the proper operation of the Selective Control Valve Unit IV and related systems.