Thank you for your question. When the LED light blinks red on the Delta Dominic Pull-Down Kitchen 19940TZ-SPSD-DST faucet, it means that your batteries are getting low and need to be changed. If your light stays red and your water is off, then your valve will not allow water to run, until the batteries are replaced. If your light turns red while the water is running, the faucet will only work in a manual mode until the batteries are changed.
Date published: 2019-03-12