Water detector troubleshooting

Learn what to do when you have a problem with a water detector in your Xfinity Home system.

Note: This device is no longer for sale as of August 31, 2021.

What you'll need

• Xfinity Home Secure
• Access to the water detector you're having trouble with
• A glass of unfiltered tap water (for testing the detector)
• A soft absorbent cloth (for testing the detector)
• A Phillips-head screwdriver (for resetting the detector)
  
  

Difficulty

Medium

I need to test my water detector

You should test your water detector once a month and whenever you suspect that it might not be working properly.

1. Place the end of the sensor into a glass of unfiltered tap water.
   • Don't use bottled or filtered water because it may not contain enough minerals to conduct adequate electricity for the probe to detect the water.
   • When the sensor tip contacts the water, the LED light turns on.
2. Remove the sensor from the water.
3. Dry the sensor thoroughly with a soft absorbent cloth.
   
   

If the water detector LED doesn't come on during testing:

1. Make sure you're using unfiltered tap water for the test.
2. Make sure the water detector sensor cable is securely connected to the transmitter base.
3. Dry the sensor and wait three minutes for the sensor to return to an undisturbed state.
4. Test the sensor again.
   • If the LED still doesn't light during testing, replace the battery. Test the sensor again.
   • After replacing the battery, if the LED still doesn't light during testing, reset the water detector. Test the sensor again.
   • After resetting the water detector, if the LED still doesn't light during testing, contact us.

I need to reset my water detector

1. Use a Phillips-head screwdriver to remove the closure screw.
   
   
   
2. Disengage the tab-like base catches at the top of the cover and lift the cover off of the base.
   
   
   
3. Remove the battery from the base's electrical board.
   
   
   
4. Press the tamper switch (the spring-coiled button on the electrical board) and hold it down as you reinsert the battery.
   • Keep holding it for two seconds after the LED light turns on.
5. Release the tamper switch, then quickly press it and release it again.
   • In three to five minutes, the LED will start blinking.
6. Insert the base catches into the base's tab openings and close the cover like a clamshell.
7. Reinsert and tighten the closure screw.

The water detector is sending a low battery alert

Replace the battery within two weeks of the first low battery alert.