Automatic faucets are a staple of modern convenience and hygiene. They’re designed to work effortlessly, but what do you do when they malfunction? Whether it’s a faucet that won’t turn on or off, these issues can quickly throw off your routine and lead to unnecessary trouble. Many of these problems can be fixed without professional help.
This blog post offers a complete guide to troubleshooting automatic faucets. You'll learn how to apply the right fix and get your faucet back in working order quickly and efficiently.
Why Is My Automatic Faucet Not Working?
When a touchless faucet malfunctions, the issue usually falls into one of three categories: power, sensor, or water flow. Let’s break down how to diagnose what’s happening with your unit.
Blocked or Dirty Sensor
The sensor is the eye of your automatic faucet. It detects movement and tells the faucet when to turn on and off. If this eye is dirty, it can't see your hands properly.
Over time, soap scum, hard water deposits, and everyday grime can build up on the sensor lens. This film can block the sensor, causing it to work inconsistently. Are you waving your hands to get the water flowing? A dirty sensor could be the reason. A quick cleaning is often all it takes to resolve this.
Dead Batteries
Many automatic faucets run on batteries, especially residential models and those in locations where hardwiring is difficult. Like any battery-powered device, they eventually run out of juice.
The faucet might start to act erratically if the battery levels are low. You may see a blinking light on the sensor, the water flow might weaken, or the faucet could stop working altogether. If you haven't changed the batteries in a while, this is one of the first and easiest things to check.
Power Source Issue
If your faucet is hardwired, the issue might be with the power supply. A tripped circuit breaker or blown fuse could cut off electricity, causing the faucet to stop working.
This is less common than dead batteries, but it's possible, particularly in commercial settings after electrical work or a power surge. Check your electrical panel to see if the circuit connected to the restroom or kitchen has tripped. If it has, resetting it might be all you need to do.
How To Fix a Leaky or Dripping Automatic Faucet
Check the Solenoid Valve
The solenoid valve is an electromechanical valve that controls water flow. The sensor signals the solenoid to open when it detects your hands and to close when your hands move away.
If debris, such as sand, rust, or mineral deposits, is lodged in the solenoid valve, it might not close completely. This small obstruction allows water to seep through, resulting in a constant drip or weak, continuous stream. Cleaning or replacing the solenoid valve is usually the solution here.
Examine the Valve Diaphragm and O-Rings
Inside the solenoid valve, there's a rubber diaphragm and several O-rings that create a watertight seal. However, these parts can degrade or sustain damage. When this happens, the seal weakens.
A failing diaphragm or worn O-ring struggles to hold water pressure, leading to leaks. This issue is common in older faucets or those used often. Fortunately, these components are usually affordable and easy to replace.
Steps for Resetting and Cleaning Your Faucet
How To Properly Clean the Sensor
First, you'll want to address the sensor. Grab a soft cloth and dampen it with a gentle cleaning solution—a simple mix of water and a drop of dish soap works perfectly. Carefully clean the lens to clear away any grime or residue. Steer clear of abrasive cleaners or rough materials to avoid scratching the lens and impairing its function.
After you clean it, wipe the sensor with a dry cloth to remove any moisture. Test the faucet to see if its responsiveness has improved. This simple action can make a world of difference.
Reset the Faucet's Power
If cleaning the sensor doesn't work, try a power reset. This can clear any electronic glitches that might be causing the issue.
For battery-powered models, remove the batteries and wait a few minutes before installing a fresh set. This allows the internal electronics to discharge and reset. For hardwired models, you can turn off the power at the circuit breaker for 1-2 minutes. The faucet should recalibrate itself once you turn the power on.
Solving Low Water Pressure Problems
Is the water coming out in a trickle instead of a steady stream? Low water pressure can be frustrating, but it's another issue that often has a straightforward fix.
Clean the Faucet Aerator
The aerator is the small screen at the tip of the faucet spout. Its job is to mix air with the water to create a soft, non-splashing stream. Over time, the aerator can get clogged with sediment and mineral deposits from the water supply.
To clean it, unscrew the aerator from the faucet. You might need a special key that came with your faucet, or you can often do it by hand. Soak the aerator in a cup of white vinegar for a few hours to dissolve the mineral buildup. Use a small brush to scrub away any remaining debris, then rinse it thoroughly and screw it back on.
Inspect the Water Supply Lines
The water supply lines are flexible hoses under the sink that run to the faucet. The shut-off valves on these lines should be fully open. Sometimes, they accidentally close and restrict the water flow.
Also, inspect the lines for any kinks or bends that could block the water. Straighten them out if you find any. This simple check can quickly restore proper water pressure to your automatic faucets.
Take the Next Step
Most common touchless faucet issues can be easily resolved. With our complete guide to troubleshooting automatic faucets, you can often fix the problem yourself and avoid the cost of a professional service call. Consistent maintenance, such as regular cleaning and battery changes, can also prevent many of these problems from happening in the first place.
If you've tried these solutions and your faucet is still not working correctly, it might be time for a replacement. For a wide selection of reliable, stylish options, you can explore our collection at Electronic Faucet.
All Electronic Faucets products are IAPMO certified