EMS Si - Wi-Fi/Web-Portal setup


Connect your EMS Si to the Internet so you can control it from your own personalized, secure ecobee Web Portal.

From the Web Portal, you can:

   Program, configure and control your EMS Si.

   Control your EMS Si from anywhere you have Internet access.

   Use local weather data to maximize energy savings.

   Receive important alerts and reminders about your heating and cooling system.

Note: To connect your system to your personalized ecobee Web Portal you must have a broadband Internet connection and a wireless 802.11 b/g/n (WiFi) network.

Setting Up WiFi

To set up WiFi:

From the Home screen, press MENU.

Select Register Thermostat.

Select Continue.

Select WiFi Settings.

Select WiFi RadioEnabled.

Select your network from the list.

If prompted, enter your network password.

The EMS Si will automatically connect to the Internet.


The EMS Si uses your WiFi network to connect to the Internet. First, enable WiFi on the EMS Si (see instructions to the right).

The EMS Si will display a list of available networks, along with an indication of the signal strength (the more bars, the better) and whether encryption is used.

If your network is not listed, or if the signal strength is very low, try adjusting the antenna on your wireless router. If that doesn’t improve the signal, try moving your router closer to the EMS Si.

Once your network has been detected, select it from the list. If the network is encrypted, you will be asked to enter a password for that network. This is the password you created when the wireless router was first set up.

After you provide the password, your EMS Si will automatically connect to the Internet. A chain link on the screen indicates you have established a connection with the ecobee web servers.


Having Trouble?

If you are having trouble connecting to the Internet or  finding your WiFi network, you may need to configure your network parameters manually.

The EMS Si supports WiFi 802.11 b/g/n. Use the Advanced Configuration option in the WiFi menu to configure your network parameters. Choose the network from the list or manually add a new one (i.e. if your network does not broadcast its SSID).

You will then be able to view and configure the following network parameters:

  • DHCP (select Disabled to use a static IP Address; if unsure, leave DHCP Enabled)
  • SSID
  • Encryption (WEP, WEP128, WPA, or WPA2)
  • Password (if encryption is used)
  • WiFi Channel
  • IP Address and  IP Subnet
  • Gateway
  •  Primary and Secondary DNS

If you need to specify the MAC address for the EMS Si in your router’s configuration, you can obtain it from the About menu.

To configure WiFi manually:

From the Home screen, press MENU.Select SettingsWiFi. Select Advanced Configuration.

Adjust the network options for your wireless network.


Remote EMS Si Management on the SmartBuildings portal

For remote management of your EMS Si thermostat, you will require SmartBuildings software subscription.

To purchase your SmartBuildings subscription 

  1. Click on Get Started
  2. Since you already have a thermostat, simply click on Purchase Subscription
  3. You will be prompted to create a SmartBuildings account and to purchase any number of subscriptions corresponding to the number of thermostats you have
  4. Once you've complete your account set up, you can add buildings and add your thermostat to your building using the 12-digit serial number. 













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