Water Detector Troubleshooting

Learn what to do when you have a problem with a Water Detector in your XFINITY Home system.
XFINITY Home Water Detector.

What You'll Need
  • XFINITY Home - Secure or XFINITY Home - Automation
  • 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)


What Problem Are You Having?

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 enough 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 it to return to an undisturbed state.
  4. Test the sensor again.
  5. If the LED still doesn't light during testing, replace the battery.
  6. If the LED still doesn't light during testing, reset the Water Detector.
  7. If the LED still doesn't light during testing, call us at 1-800-XFINITY.

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I Need to Reset My Water Detector (XFINITY Home - Automation Only)

Do You Have XFINITY Home - Secure? Professional installation of Water Detectors is required for XFINITY Home - Secure customers. If you need to reset a Water Detector, call 1-800-XFINITY to schedule an appointment.
  1. Use a Phillips-head screwdriver to remove the closure screw.
    XFINITY Home Water Detector diagram showing closure screw removal.
  2. Disengage the tab-like base catches at the top of the cover and lift the cover off of the base.
    XFINITY Home Water Detector diagram showing the different tabs and catches necessary to open it.
  3. Remove the battery from the base's electrical board.
    XFINITY Home Water Detector 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.
  8. Re-pair the Water Detector to your Hub.

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The Water Detector is Sending a Low Battery Alert

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

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