Touchless Faucet has no water flow or the unit doesn't work
If the power supply is normal and the LED does not light up after sensing by hand, replace the sensor. Check the batteries are charged/good and in the correct +/- polarity. Change or reorient batteries. Dirt on the sensor surface or debris on the sensor.
#4 Delta Touch Temperature Indicator Not Working
Just remove the battery from the pack; wait 30 seconds before replacing it. This will reset your faucet.
Myth #1: Touchless faucets require frequent battery changes
Smart faucets require lithium batteries which last 3 to 5 years. A blinking red light on Oras touchless faucets lets you know when it's time for a battery change, which you can easily do yourself within minutes.
Check all your taps before doing anything else, and see if the problem is centralized to one faucet or spread across your house. If only one faucet is having problems, you may simply be dealing with a clogged aerator. You should also see if the faucet's stopcock is open, as this too may be causing it to shut off.
Check Water Main
If water isn't coming out of any faucet in your home, check if your water main is open. If the main valve is closed, water won't flow through the mainline, and thus no water will come out of any of the faucets. Open the main valve all the way. This might fix the problem if the valve was closed.
Low water pressure in sink faucet
Clogged aerators and clogged cartridges are two of the most common causes of low water pressure in a sink. The aerator is the tip of the faucet that the water comes out of, while the cartridge is found underneath the sink handle and enables you to stop and start the flow of water.
Power source
Every touchless or automatic faucet needs a power source in order to work, though the power sources can vary. While some models get their power from dry-cell batteries, other faucets will use a low-voltage current from an AC transformer, Hunker says.
Touchless faucets require electricity to operate, whether through using batteries or by connecting to an electrical socket in the wall. Check the packaging of your touchless system before you order it to ensure you have the proper power source for it.
Depending on your model, touch faucets either have batteries or rely on electricity from a nearby GFCI outlet. If you don't have room on the GFCI outlet under your sink, save time and money by installing a touch faucet that uses batteries.
Rust is a common reason why your taps may suddenly stop working. If you notice that rust has gathered on your tap's exterior, it is a sure sign that it has gathered on the interior too. Rust comes from general wear and tear and can cause blockages. If you see any rust, you should replace your tap with a new faucet.
Simply disconnect tap from the control box and connect to another working control box, allowing it time to re-set. If the tap works correctly then the original control box may need replacing. If the tap still does not work, then the sensor may need replacing. Transformers can also be swapped for testing.
Even if your home's power goes out, your Delta Touch2O faucet can still be manually operated, so you're never without water when you need it.
The light will also flash rapidly to indicate battery life is low when using batteries to power the faucet. The blue LED light indicates that you are in electronics mode. It will come on for two seconds whenever electronics mode is activated. The light will also flash slowly indicate battery power is running low.
Touch2O® Technology kitchen faucets are powered by 6 AA batteries and Touch2O® and Touch2O.xt are powered by 4 AA batteries. Ordinary batteries will last up to one year with 20 minutes of usage per day. The LED indicator light on the base of the faucet will start blinking red when it is time to change the batteries.
So, when your water stops running from the faucets, it can be cause for concern. If your water suddenly stops running, the first thing you should do is not panic. Common reasons for the water to shut off include a closed valve, a water heater malfunction, leaky pipe, or an issue with your water supply.
If you're not getting any water in your home, it's likely because of a problem with the water main. If you have an emergency shut-off valve, it could have accidentally triggered and stopped your water flow, or the valve could be open and impeding your water supply because it's leaking.
In most modern models, the battery can be exchanged by homeowners within a few minutes as it's located in a small capsule under the washbasin and attached to the cable of the sensor. Changing the battery for a touchless faucet is quick and easy as in most faucets the battery is located in a battery case below the sink.
Nothing lasts forever, especially not the faucet on your kitchen sink. Typically, kitchen faucets can last between 15-20 years. Lifespan depends on their quality and other factors such as whether or not it was installed properly and how hard the water is.