Hello, JimB! Thank you for your question. Note that the light will flash red when the batteries are running low and need to be replaced. You can switch the faucet to manual mode by turning the faucet on so that water is running, then disconnecting the battery box. You can also remove the solenoid assembly by turning the faucet off manually, disconnecting the solenoid from the faucet and hose, and connecting the hose directly to the faucet.
Best regards, Jon
Date published: 2019-09-27