Touchless faucets are a game-changer in promoting hygiene, reducing physical contact, and conserving water in homes and commercial restrooms. However, issues like inconsistent water flow, sensor malfunctions, or low pressure can arise.
Here’s a DIY troubleshooting guide to address problems using simple techniques, ensuring optimal functionality, efficiency, and long-term maintenance for your touchless faucet system.
On this page:
ToggleHow Touchless Faucets Work
Touchless faucets use sensors to detect hand movements. They then turn on the water. The sensors can be infrared or ultrasonic. A signal is sent to the solenoid valve, which opens to release water. Power is supplied by either batteries or an AC adapter, and many models include features like water filters to ensure clean water. For instance, KEGE’s touchless faucets have waterproof connectors. They protect the internal parts from damage.

Understanding these parts is crucial for troubleshooting. When my KEGE touchless kitchen faucet stopped functioning, the issue turned out to be a clogged aerator—an easy fix once identified.
Let’s explore common issues and solutions.
—————————
Common Touchless Faucet Problems (And How to Fix Them)
Touchless faucets rely on infrared sensors, solenoid valves, and power sources to function seamlessly. When one component falters, the entire system can be affected. Here are the most common issues and step-by-step solutions.
1. Low or No Water Flow
Symptoms: Little to no water comes out when activating the faucet.
- Check the water supply: Sometimes, the issue isn’t electronic. Ensure the shutoff valves are fully open and that the pipes aren’t clogged.
- Clean the aerator: Over time, debris can clog the aerator, reducing water flow. Unscrew the aerator, soak it in vinegar for an hour, and scrub gently with a toothbrush.
- Inspect the solenoid valve: A dirty or faulty solenoid valve can block water flow. Turn off the water supply, remove the valve, clean it, and test again.
2. Sensor Issues
Symptoms: The sensor doesn’t respond to hand movements, or it activates inconsistently.
- Clean the sensor lens: Dust and grime on the sensor lens can interfere with detection. Use a soft cloth and mild soap to gently wipe the area. Avoid harsh chemicals that could damage the electronics.
- Check the sensor alignment: Ensure the sensor isn’t obstructed by fixtures or objects.
- Power source check: Low batteries or faulty wiring can disrupt the sensor’s functionality. Replace batteries or inspect connections.
3. Power-Related Failures
Symptoms: The faucet doesn’t turn on, or the sensor light blinks.
- Replace the batteries: Most touchless faucets use batteries to power the sensors. If you notice a blinking LED, it’s a sign to swap out the batteries. Double-check the polarity when installing new ones.
- Inspect the AC adapter: If your faucet is wired, ensure the adapter is securely connected and functional.
4. Leaking Faucet
Symptoms: Water drips continuously, even when the faucet is off.
- Tighten the cartridge nut: A loose nut can cause leaks. Use a wrench to secure it firmly but avoid overtightening.
- Replace worn-out washers or seals: Inspect the rubber seals for cracks or wear, and replace them if necessary.
5. Faucet Won’t Turn Off
Symptoms: Water continues to flow after hands are removed from the sensor range.
- Clean the solenoid valve: A partially closed valve may cause continuous water flow. Disassemble, clean, and reassemble the valve carefully.
- Reset the system: Sometimes, a simple reset can resolve the issue. Turn off the water and power, wait for a minute, then restart.
—————————
Maintenance Tips to Avoid Problems
Regular maintenance can extend the life of your touchless faucet:
- Clean Filters and Valves – Remove debris from the solenoid filter, pilot valve, and one-way valves to maintain smooth water flow.
- Replace Batteries – Use high-quality lithium or rechargeable batteries and replace them every 1–2 years or as needed.
- Inspect Seals and Connections – Check the rubber seals, diaphragm, and cartridge nut for wear and replace if necessary.
- Prevent Dirt Build-up – Use a damp cloth to clean the sensor eye, spout, and other components.
- Test Regularly – Perform routine checks to ensure all parts, such as the sensor, membrane, and solenoid valve, are functioning correctly.
—————————
Final Thoughts
With a little DIY expertise and a touch of patience, most touchless faucet problems can be resolved quickly. From maintaining motion sensors to addressing low water pressure, proactive upkeep ensures your faucet stays in optimal working condition. Remember, regular maintenance not only enhances the efficiency of your faucet but also promotes a superior user experience for your building visitors or household occupants.