A143 - Shutoff valve inputs in error

What does A143 mean?

This error code means the shutoff valve is sending incorrect information. Either both switches are reporting as open, or both are reporting as closed.

• Shutoff valve switches are incorrectly positioned
• Wiring issue with the shutoff valve sensors

Click steps to track your progress.

1. 1

   Manually open the shutoff valve if no water is detected or if the unit is not being serviced.

2. 2

   Check the wiring connections to the shutoff valve.

3. 3

   Contact technical support or a service provider.