This error message appears when a Phyn Smart Water Sensor is unable to connect to your Wi-Fi network during pairing.
Follow the troubleshooting steps below to determine what is preventing the Sensor from connecting.
Step 1: Verify Your Wi-Fi Password
On your phone, tap Settings > Wi-Fi.
Find the Wi-Fi network you are connected to and tap on it.
Tap Forget.
Tap the network name again to reconnect.
If you see your network listed twice (for example: MyNetwork_2.4Ghz and MyNetwork_5Ghz), tap only the 2.4Ghz SSID. The Sensor connects to 2.4GHz networks only.
Manually type in the password.
Tap the eye icon to verify what you entered. Do not use auto-fill.
Tap Connect.
If you connect successfully, your password is correct.
If you do not connect, locate the correct password and reconnect to your Wi-Fi network.
Step 2: Verify Wi-Fi Signal Strength
If the Phyn App shows a spinning icon and displays “Joining your network”:
Force close the Phyn App.
Re-launch the Phyn App.
Bring the Sensor next to your Wi-Fi router.
Ensure the Sensor is in Pairing Mode. If not, the app will prompt you.
Attempt to connect the Sensor again.
Make sure you see your Wi-Fi network name in the list of available networks.
Only 6 network names are displayed at one time during pairing. If you do not see your network:
Tap Refresh once or twice to cycle through available networks
Stand directly next to your router
Tap Refresh several times if needed
If you are next to your router and your network name does not appear after multiple refresh attempts, the issue may be related to router settings. Refer to the SSID troubleshooting article.
Once connected successfully:
Move the Sensor to its final location (for example: under a sink or near a toilet)
Press the side button to test signal strength
If the test is successful:
The LED will blink blue 5–6 times
The LED will blink green
The Sensor will beep 3 times
If the test is not successful:
The LED will blink blue about 8 times
The LED will turn off
The LED will blink blue and white continuously
The Sensor will not blink green or beep
If the test fails, you may need a Wi-Fi range extender to improve coverage.
If you are still unable to connect while next to the router, continue troubleshooting.
Step 3: Test Using a Mobile Hotspot
This step helps determine whether the issue is with your Wi-Fi router configuration.
If the Sensor connects to a Mobile Hotspot but not your home Wi-Fi network, the issue is with your router settings.
To test:
Set up a Mobile Hotspot on a phone.
On the phone or tablet used for pairing, go to Settings > Wi-Fi.
Connect to the Mobile Hotspot network.
Open a browser and confirm you can access the internet.
If you cannot browse the internet, contact your wireless provider to confirm Mobile Hotspot is enabled on your plan.
Launch the Phyn App.
Ensure the Sensor is in Pairing Mode.
Follow the steps to add the Sensor.
If pairing to the Mobile Hotspot is successful, the Sensor firmware will update automatically.
Since the Sensor connects to the Mobile Hotspot but not your home Wi-Fi network, the issue is related to your router configuration.
Before continuing troubleshooting:
Tap Menu > Settings > Device.
Select the Sensor name.
Scroll down and tap Delete Device.
Router Configuration Troubleshooting
Most router configuration issues fall into two categories:
If the Wi-Fi Network Name (SSID) Is Not Displayed
If your network name does not appear during pairing, the router may:
Not be broadcasting the 2.4GHz band
Be using an unsupported Wi-Fi security profile (such as WPA3)
Have the SSID hidden
Refer to the SSID troubleshooting article to resolve this issue.
If the Wi-Fi Network Name Appears but Will Not Connect
If your network name appears but pairing fails, check the following:
Mesh Networks
The Phyn Sensor requires a dedicated 2.4GHz network.
If you have a mesh router that broadcasts the same network name for both 2.4GHz and 5GHz, pairing may fail.
Refer to the mesh network compatibility article for setup guidance.
Network Security Settings
Router security settings or third-party security software (such as Trend Micro) can block the Sensor from connecting.
Review your router’s security settings and temporarily disable advanced network security features if necessary.