Sensi Thermostat Keeps Going Offline? – (Easy Fix Guide)

It can be confusing when your Sensi thermostat keeps going offline.

When your thermostat can’t keep a constant online connection, it won’t be able to function with your smart home control system correctly. 

Luckily, the troubleshooting for this complicated issue is broken down in an accessible format in this guide.

To fix your Sensi thermostat going offline, first check and verify your WiFi signal. Next, reset your WiFi connection from the thermostat menu and update your app firmware.

Let’s jump into the top causes of this issue first!

What Causes Sensi Thermostat to Keep Going Offline?

Whenever your thermostat goes offline all the time, it’s usually due to an issue with your router or network.

In rarer cases, it can be caused by an internal software issue with your thermostat.

The most likely scenario is that your WiFi router has insufficient coverage or the network signal is inconsistent. 

Here are the top most common causes for Sensi thermostats going offline: 

• Weak or Interrupted WiFi signal.
• Router and Network Issues.
• Outdated Software.
• Overloaded WiFi network.
• Hardware malfunctions.

Now that you are aware of the key trouble areas let’s attempt to resolve them one by one!

How to Fix Sensi thermostat keeps going offline?

Tip: Please complete the troubleshooting steps from top to bottom for best results.

1. Check Your WiFi Signal Strength

The first solution to attempt to fix the Sensi thermostat offline issue is to ensure your WiFi is sufficiently strong.

When you have a weak or inconsistent WiFi signal, it might cause your Sensi thermostat to keep disconnecting.

Here are some ways to check your WiFi signal strength:

1. Open the Main Menu on your thermostat.
2. Navigate to Settings using the arrow keys and select it.
3. Find the WiFi option alternatively named “Network.”
4. Select WiFi status or similar options to check your connection strength.
5. Look at the WiFi strength indicator to see if it’s sufficiently strong.

If you can’t find these settings on your thermostat, here is an alternative: take any mobile device connected to your WiFi and move it next to your thermostat.

If the WiFi signal is good on your mobile device, it should also be strong enough for your thermostat.

Note: Go through your router's firewall settings (accessed by entering your IP address into a browser) and ensure it's not blocking your Sesni thermostat from connecting. 

2. Reset Your WiFi Connection

Whenever the Sensi thermostat says offline, it’s likely due to a network issue with your router.

If your Sensi device can initially connect to your network but quickly goes offline, resetting your WiFi connection can help clear the problem.

Here are some general steps for resetting your WiFi connection:

1. Open your Sensi thermostat main menu.
2. Go to Settings, then find and select the WiFi or Network option.
3. Choose WiFi Setup or a similarly named setting.
4. Select the Disconnect or Forget option.
5. Afterward, follow the on-screen prompts to pair your Sensi thermostat again.

If you are having issues connecting to your WiFi once you have completed the steps above, ensure that you are selecting the correct WiFi network and pay attention to the credentials.

Note: If your router is single channel and set to 5GHz band only, try changing the frequency to 2.4GHz or to dual-band. Not all Sensi thermostat models support 5GHz.

3. Update Your Sensi Thermostat Firmware

Most Sensi thermostats automatically download updates whenever they are connected to your network.

Usually, there is no manual update option except to ensure your Sensi app runs on the latest version.

If your Sensi app is outdated, this might prevent your thermostat from updating automatically.

Here is how to update your Sensi app:

1. Open the Google Play store on your Android device where the app is installed.
2. In the store, tap on your profile icon located on the top right side.
3. Select “Manage apps and device.” 
4. Look for your Sensi app down the list of apps.
5. If there is a pending update, an update button will be next to it.
6. Tap Update and wait for the installation to complete.

When the update is complete, check if your Sensi can pair to your WiFi without going offline.

Note: Try using a different network to see if your Sensi thermostat can pair temporarily to install potential updates.

4. Power Cycle Your Thermostat and Router

Any electronic devices are prone to errors due to static electricity build-up.

When you power cycle your router and the Sensi thermostat, this can fix many software-related issues.

Power cycling the router also clears its temporary memory, which could prevent devices from pairing.

Here is how to reset your Sensi thermostat:

1. Access your Sensi thermostat that’s mounted on the wall.
2. If applicable, remove it from the wall by gently pulling the cover away from its base.
3. Locate the battery panel and remove the batteries, or disable its power source if wired.
4. Wait for at least one minute to complete an entire power cycle.
5. Reinstall the batteries or reconnect your Sensi thermostat to power and place it on the wall again.

To reset your router, simply unplug its power connector cable, wait for one minute, and plug the power cord again.

Wait for all lights to start blinking and check if your thermostat works as intended.

Note: Some VPNs or proxies can prevent your Sensi thermostat from properly connecting. Try temporarily disabling them to see if the issue persists.

5. Change WiFi Channel

Your WiFi router uses specific channels to broadcast information.

You can resolve connectivity issues by switching around your default broadcast channels.

This is usually caused when many WiFi networks are around, and an overlap can decrease performance. The steps below highly vary based on your router manufacturer. 

Here are the general steps to change your channel:

1. Use a PC or mobile device connected to your WiFi network.
2. Open any web browser of your choice.
3. Input the Routers IP address into the search bar and press enter.
4. Log in to your router’s interface with its username and password (usually written down on the router).
5. Find the “Channel” setting and set it to a specific channel like 1,6 or 11.
6. After changing the channel, apply the changes and restart your router.

Experiment by changing the WiFi channels and see if they improve your Sensi thermostat connectivity.

If you doubt how to change these settings, call your ISP to see how to do these steps.

Note: If your WiFi uses a standardized security protocol such as WPA2, verify that it is compatible with your Sensi thermostat.

6. Factory Reset the Sensi Thermostat

If your Sensi thermostat keeps going offline, you can perform a factory reset.

This can resolve any software-related issues that might prevent your Sensi thermostat from staying connected to your WiFi.

Please note that the steps below might vary depending on your Sensi model. For more device-specific steps, check out our other guide.

Here is how to perform a factory reset on your Sensi thermostat:

1. Access the Sensi main menu.
2. Navigate to the Settings panel by using the arrow buttons.
3. Locate the Reset option or alternative named “Factory Reset.”
4. Choose the reset option and wait for your thermostat to restart.

If the factory reset procedure successfully went through, you will be prompted to set up your Sensi again and manually reconnect it to your WiFi network. 

Note: When you hard reset your Sensi thermostat, all stored data will be deleted. Ensure to back up important data.

7. Contact Sensi Customer Support

If you have performed all of the steps above and your Sensi thermostat still goes offline all the time, a hardware defect is possible.

If there is physical damage to its electrical components, your thermostat can malfunction.

In this case, it’s best to get in touch with Sensi customer support to receive further help.

Quick Recap

Thus, if the Sensi thermostat keeps going offline, first troubleshoot your WiFi signal strength. Then reset your WiFi connection and reboot your Sensi thermostat as well.

Afterward, check for software updates and check your WiFi settings. As a last measure, factory reset the Sensi thermostat.