A123 - Shut-off valve not installed

What does A123 mean?

The system is reporting that the shutoff valve has not been installed. If you do not have a shutoff valve, you may need to configure the unit to ignore this.

• Shutoff valve is not physically installed
• System not configured for no shutoff valve

Click steps to track your progress.

1. 1

   If a shutoff valve was not installed, access the control panel settings.

2. 2

   Navigate to the relevant setting and select 'NO' for the shutoff valve.

3. 3

   If a shutoff valve should be installed, ensure it is properly connected and configured.