Delta Touch Faucet Blue Light Not Working [Why+ How To Fix]

In Delta faucets, the blue LED light indicates that the “Touch” sensor is active. A flashing blue LED light indicates normal mode when hands-free is activated. But sometimes it may stop working due to several reasons.

Your Delta touch faucet blue light not working because it has a worn out or weak battery, clogged spray head inlet, sensor malfunctions, or LED light wiring issue. Luckily, all of these problems are easily fixable.

I’d like to discuss all these issues in detail to find out the simplest solutions.

Delta Touch Faucet Blue Light Not Working [Reasons + Solutions]

Here are the four major reasons behind your Delta touch faucet blue light not working. Have a look at the table as follows:

Reasons	Solutions
1. Battery Issue	> Replace the worn-out/old battery
2. Debris in the spray head inlet	> Clean the spray head inlet
3. Sensor issue	> Diagnose and fix the sensor issues
4. LED light wire issue	> Check the wiring and battery pack

1. Battery Issue

The blue LED light indicates when the battery is low. Replacing the battery will fix the issue immediately. Here’s how you can replace the battery of your Delta faucet. Follow the below steps:

• Turn off the water supply to the faucet.
• With the faucet running water, open the battery pack or remove the batteries.
• Replace the old batteries with new ones. The Delta Touch faucet uses ordinary AA-sized batteries. 
• Close the battery pack or insert the batteries back into the tray.
• Turn on the water supply to the faucet and test the faucet to ensure it is working properly.

For the full battery replacement procedure head to how to change the battery on the Delta touch faucet.

2. Debris In The Spray Head Inlet

If you’re experiencing issues with a valve and suspect debris might be the cause, it’s a good idea to check the spray head inlet for any obstructions. Here’s a step-by-step guide on how to clean the spray head inlet:

• Turn off the water supply: Before working on the spray head, make sure to turn off the water supply to avoid any accidents or water leakage.

• Remove the spray head: Unscrew the spray head from the valve or detach it according to the specific design of your system. Refer to the manufacturer’s instructions if needed.

• Inspect the spray head inlet: Look inside the spray head inlet for any signs of debris such as dirt, small rocks, or other particles. Use a flashlight if necessary to get a better view.

• Clean the spray head inlet: If you notice debris in the spray head inlet, you can clean it using the following methods:

i. Flush with water: Use a hose or faucet to run water through the inlet, flushing out any loose debris.

ii. Brush out the debris: If the debris is stubborn and doesn’t easily come off with water, you can use a soft-bristle brush, such as a toothbrush, to gently scrub the inlet and remove the debris. Be careful not to damage any delicate parts.

iii. Soak in vinegar: In some cases, soaking the spray head in a mild cleaning solution or vinegar-water mixture can help loosen and dissolve any residue. Follow the manufacturer’s recommendations for cleaning solutions or mix a mild solution yourself.

3. Sensor Issue

Sometimes, one of the sensors on your touch faucet will refuse to cooperate or only works intermittently. If that’s the case,

• Check underneath the sink
• Examine the wires of the affected area
• Ensure they’re not crossed or touching metal. 

If you can’t find anything wrong with it, you might need to enlist the help of a plumber.

4. Solenoid Valve Issue

If the blue light of your Delta touch or touchless kitchen faucet is on but water isn’t flowing, the solenoid valve could be the issue. Your faucet’s solenoid valve controls the flow of water.

To fix the solenoid issue, you can try resetting the LED light wire and battery pack by disconnecting the LED light wire from the solenoid and the battery pack. Wait for a few seconds before reconnecting them. 

If resetting the LED light wire and battery pack doesn’t work, you can replace the solenoid valve.

To replace the solenoid valve, follow the below steps:

• Locate the Delta Touch’s battery compartment, under the sink.
• Remove the clip and mounting shank.
• Disconnect the hose from the solenoid to the faucet.

For a full guide, see delta touch faucet solenoid not working.

5. LED Light Wire Issue

Reset the LED light wire and battery pack. To do this, disconnect the LED light wire from the solenoid. Disconnect the battery pack and wait for a few seconds before reconnecting them. 

If the above solutions don’t work, you may consider resetting your faucet. Resetting your Delta Touch faucet is quick and straightforward.

You need to remove the batteries from the pack and wait about 30 seconds. Then, reinstall the batteries and test the faucet.

For more info on the resetting procedure, see how to reset the Delta touch faucet.

FAQs:

Conclusion

Thank you for reading my article on the Delta touch faucet blue light not working. I think now you have solved your Delta touch faucet blue LED light issue.

Always refer to the manufacturer’s guidelines when replacing parts. See this if you are facing a Delta touch faucet solenoid not working.