Moen Sensor Faucet Troubleshooting [A Complete Guide]

The MotionSense feature on Moen Faucets enables you to turn the water on and off. You won’t need to touch the sensors to make the water flow. Turn cartridge water on and off by waving your hands close to the sensors.

Generally, the touchless Moen faucet has two sensors. They are wave sensors and ready sensors. But sometimes, the sensors do not work as usual due to some issues. Whatever the reasons are, you can fix it on your own.

By reading this article, you can troubleshoot your Moen sensor faucet. Overall, I’ll cover the causes of the Moen MotionSense faucet not turning on, why they turn on automatically, and why there is no blue light on them.

Moen MotionSense Faucet Won’t Turn on

There are several reasons for not turning on a Moen motion sense faucet. If your faucet does not turn on, adhere to the instructions listed below.

1. Check the Water Supply

First, check the water supply If you find out your Moen MotionSense faucet is not turning on. 

Ensure that the water supply is on.

2. Improper Installation

You have to install a Moen MotionSense faucet properly. It will not turn on due to improper installation. So, if it’s not turning on, double-check the installation process again.

Ensure that you have installed the faucet properly, such as ensuring the placing and securing of the faucet and installing the hose, control box, and batteries properly.

3. Loose Cable

The Moen MotionSense has many cables beneath the sink. These cables are connected to the control box and the battery box. Check the cables to see if they are tightened or loose. If the cables are loose, your Moen faucet will not turn on. Verify there are no loose cables.

4. Obstruction to the Sensors

All the Moen MotionSense sensors have protective covers on them. Therefore, they can make a barrier for your sensors if you do not remove them.

If you just set up your appliance and it won’t turn on, ensure you’ve taken off the protective cover. Since the sensor will not detect any motion if you do not remove the protective cover. As a result, the faucet will not turn on.

5. Issue With Batteries

Issue with the batteries is one common reason that stops the faucet from turning on. The batteries power the faucet. Here are the causes that can prevent the Moen faucet from turning on are:

If your Moen MotionSense faucet does not turn on, ensure that you have installed the batteries properly. Moreover, always use Alkaline batteries. Moen recommends using these types of batteries.

In general, a blinking blue light indicates the power of the batteries on the Moen faucet. If the blue light blinks slowly, that means the batteries are low.

On the other hand, if it blinks rapidly, it indicates that the batteries are dead. In this case, you will need to replace the batteries of your Moen sensor faucet. 

6. Disabled Sensors

Moen Motionsense faucets have features to enable and disable the sensors. If you accidentally disable the sensors, the faucet will not turn on. The sensor on the spout is especially sensitive.

Thus, any movement or potential reflections could cause them to become distorted. The sensor will disable if you put your hand over the sensors for five seconds.

Therefore, make sure your sensors are not disabled. 

To enable the sensors, first use the handle to turn on the water. Then put your hand over the sensors for ten seconds. 

When the sensor is enabled, the blue light on theready sensors will blink twice

Moen MotionSense Faucet Turns on By Itself

Some users of Moen MotionSense faucets reported that their faucets sometimes turn on by themselves. Different causes occur for this issue. Below I have covered some factors of this problem.

1. Check the Handle

If you do not close the lever handle properly, the faucet may turn on automatically. Users sometimes forget to close the handle properly.

As they do not use the handle regularly, surely, they don’t notice it. So, ensure the handle is firmly closed.

2. Check the Power Source

The faucet may emit erratic signals if your power cord becomes loose. If your batteries are low or fastened loosely, they will not send signals properly.

You will need to replace the batteries. If using AC power, ensure the AC adapter is firmly plugged into the outlet.

3. Dirty Sensors

The sensors occasionally become dirty. As users use their dirty hands to wash their hands and dishes, the sensor gets dirty.

Occasionally, debris covers the sensor, causing the faucet to turn on automatically.

Moen MotionSense No Blue Light

Mainly, the blue light indicates that your faucet is in an electric mood. After two seconds of activating an eclectic mood, the blue light will come.

However, the blue light will flash slowly when the battery becomes low. While the blue light flashes first due to a dead battery.

Moreover, the Moen MotionSense blinks blue light while you put your hand over the sensors. On the other hand, if you see no blue, that indicates there is no electrical supply coming to the faucet.

As I mentioned earlier, in this case, you will need to check the batteries. Also, ensure that electricity is passing through the outlet.

Final Words

The Moen faucet occasionally doesn’t turn on, while sometimes it turns on by itself. In general, problems with batteries or sensors are the root cause of this problem.

However, other factors contribute to these issues as well. Moen Motion sense’s touchless faucet makes the life of the user easier.

Although it is easier to use, sometimes the Moen touchless kitchen faucet stops working. But the user can solve the problem by taking proper action.