Water leak sensors provide early warning of leaks and flooding. This guide covers common issues across various brands.
Sensor Not Detecting Water
Detection problems:
- Contact points: Gold/metal probes must contact water to trigger
- Placement: Place flat on floor where water would collect
- Probe extension: Some sensors have cable probes for tight spaces
- Test: Place wet finger across probes to test
- Clean probes: Mineral buildup can affect sensitivity
No Alerts Received
Notification issues:
- App notifications: Ensure notifications enabled in app
- Hub connection: Verify sensor connected to hub
- Battery: Replace battery if low
- Phone settings: Check phone notification permissions
- Do not disturb: Critical alerts may be blocked by DND
Zigbee Sensor Issues
For Zigbee water sensors:
- Hub required: Needs Zigbee hub (SmartThings, HA, etc.)
- Range: Keep within Zigbee mesh range
- Battery: Most use CR2032 or CR123A batteries
- Re-pair: Remove and re-add if not reporting
Z-Wave Sensor Issues
For Z-Wave water sensors:
- Wake up: Press button to wake battery device
- Inclusion: Include near hub, then move to location
- Associations: May need siren association for instant alert
WiFi Sensor Issues
For WiFi-connected sensors:
- 2.4GHz: Usually only works with 2.4GHz
- Cloud dependent: Most require cloud for alerts
- Offline alerts: Check if sensor has local siren
Automations
Setting up water leak response:
- Shut off valves: Automate smart water shutoff valves
- Notifications: Send alerts to all household members
- Lights: Flash lights to indicate leak
- Sirens: Trigger siren for audible alert