Electromagnetic Interference Causing Poor Connectivity; Wi-Fi Terminology; Received Signal Strength Indicator (Rssi) - Lennox S40 User Manual

Electromagnetic Interference Causing Poor Connectivity

Locate the thermostat and router away from other devices that could possibility
interfere with wireless communications. Some examples of other devices that
could interfere are:
• Microwave ovens
• Wireless cameras
• Portable phones and bases
• Baby monitors
• Wireless speakers
• Bluetooth devices
• Garage door openers
• Neighbor's wireless devices
To eliminate a possible source of interference, temporally disable any devices
and see if Wi-Fi performance has improved.

Wi-Fi Terminology

The following terminology is used in this troubleshooting section:
• Received Signal Strength Indication (RSSI). This indicates the signal
strength of the Wi-Fi router being received by the scanning device (i.e., smart
phone). So the higher the RSSI number (or less negative in some devices),
the stronger the signal.
• Internet Protocol Address (IP address). This is an address assigned by your
home router for each network device (e.g., computer, printer, thermostat).

Received Signal Strength Indicator (RSSI)

The RSSI can be viewed from the thermostat.
1. From the home screen, select Menu > Settings > Wi-Fi > and select right
arrow next to the Wi-Fi network name and then select it again.
2. When selecting the right arrow (>) the second time, a screen will appear
which will display an option to forget the network. In addition IP address,
subnet mask, router IP, DNS, MAC Address, Speed, wireless type, BSSID
and RSSI.
Figure 3. Ideal RSSI
NOTE: If the RSSI signal strength is anywhere between -9 to -69, then the
signal strength is sufficient. If outside this range, then either relocate
the router closer to the thermostat, add a repeater, or move the
thermostat. Adjusting antenna on router or extender/repeater may
resolve the issue.
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