Eve Water Guard Leak Sensor Not Detecting or Alerting

Understanding the Issue

The Eve Water Guard is a leak detection sensor designed to alert you when water is detected on floors near appliances, pipes, or water heaters. When the sensor fails to detect leaks or does not send alerts, the problem usually involves cable placement, connectivity, or notification settings within Apple HomeKit.

Common Causes

• The sensing cable is not making proper contact with the floor surface
• The sensor has lost its Bluetooth or Thread connection to your HomeKit hub
• HomeKit notifications are disabled on your iPhone or iPad
• The sensing cable is dirty or has residue preventing conductivity
• The device firmware is outdated
• The home hub (HomePod, HomePod Mini, or Apple TV 4K) is offline or not functioning as the active hub

Step 1: Verify Sensing Cable Placement

1. Check that the sensing cable is fully inserted into the Eve Water Guard's port.
2. Ensure the cable is lying flat on the floor surface where leaks are most likely to occur — directly beneath or beside water heaters, washing machines, dishwashers, or exposed pipes.
3. Make sure the metal contact strips on the underside of the cable are facing downward and touching the floor.
4. Test the sensor manually by placing a few drops of water directly on the sensing cable. The alarm should trigger within seconds.
5. If using extension cables, verify all connections between cable segments are secure.

Step 2: Clean the Sensing Cable

1. Unplug the sensing cable from the Eve Water Guard.
2. Wipe the metal contact strips with a damp cloth to remove any dust, mineral deposits, or residue that could prevent water detection.
3. Allow the cable to dry completely before reconnecting.
4. Reconnect the cable and test detection again with a small amount of water.

Step 3: Check Connectivity in the Eve and Home Apps

1. Open the Eve app and locate the Water Guard in your device list.
2. Check if the device shows as Connected or Not Responding.
3. If not responding, move closer to the device and wait 30 seconds for the connection to re-establish.
4. Open the Apple Home app and verify the Water Guard appears and shows a current status.
5. If the device supports Thread, check the Thread network status in the Eve app under Settings > Thread Network. Ensure your Thread border router (HomePod Mini or Apple TV 4K) is online.

Step 4: Enable and Verify Notifications

1. On your iPhone or iPad, go to Settings > Notifications > Home and ensure notifications are enabled.
2. Open the Home app, tap the three-dot menu, and select Home Settings > your name.
3. Confirm that Accessory Notifications are turned on.
4. In the Eve app, go to the Water Guard settings and verify that leak alerts are enabled.
5. Make sure you have a home hub set up and active — leak alerts require a hub for remote notifications when you are away from home.

Step 5: Update Firmware

1. Open the Eve app and go to Settings > Devices.
2. Select the Eve Water Guard and check if a firmware update is available.
3. If an update is available, follow the on-screen prompts to install it. Stay close to the device during the update.
4. After updating, test the leak detection again.

Step 6: Reset and Re-Add the Sensor

1. If the sensor still does not detect or alert, press and hold the reset button on the Eve Water Guard for 10 seconds until the LED flashes.
2. Remove the device from the Home app by long-pressing the accessory, selecting its settings, and choosing Remove Accessory.
3. Re-add the device by scanning the HomeKit setup code on the device or its packaging.
4. Assign the sensor to the correct room and re-enable notifications.
5. Test leak detection once more with water on the sensing cable.

Additional Tips

• The built-in siren on the Eve Water Guard will sound locally even without a network connection when water is detected.
• Position the Eve Water Guard within Thread or Bluetooth range of your home hub for reliable remote alerts.
• Replace the sensing cable if the metal contacts appear corroded or physically damaged.