my mysa keeps disconnecting from wifi every few days and i have to reboot it to get it back online

Diagnosis

The Mysa Smart Thermostat utilizes a low-power 2.4GHz Wi-Fi radio designed for stability over speed. When the device disconnects every few days, it is rarely a hardware failure of the thermostat itself, but rather a "handshake" failure between the Mysa and your wireless router. This occurs because modern "Mesh" networks and high-end routers use a feature called Band Steering, which attempts to force devices onto the faster 5GHz band. Since the Mysa cannot communicate on 5GHz, the router eventually drops the connection or puts the device in a "timeout" state, requiring a hard reboot to re-establish the IP lease.

Another common root cause is "Airtime Fairness," a router setting that optimizes network performance by ignoring slower legacy devices to prioritize faster ones. Because the Mysa transmits small packets of data at a slow rate, the router may perceive it as a "lagging" device and prune it from the active client list to save bandwidth. You can confirm this is the issue if the thermostat shows a "disconnected" icon in the app, but your phone and laptop in the same room maintain a perfect connection.

How to Fix It

To permanently resolve these drops, you must create a stable environment for the 2.4GHz radio. Follow these exact steps:

1. Access your router's admin panel by entering the Gateway IP (usually 192.168.0.1 or 192.168.1.1) into a web browser and logging in with your admin credentials.
2. Navigate to the Advanced Wireless Settings or Professional tab.
3. Locate Band Steering or Smart Connect and toggle this setting to "OFF." This stops the router from trying to push the Mysa to the 5GHz band.
4. Find the Airtime Fairness setting (often found under "Advanced" or "WLAN") and set it to "Disabled."
5. Go to the DHCP or LAN Setup section. Find the Mysa's MAC address (found in the device settings of the Mysa app) and assign it a Static IP Address. This prevents the connection from dropping when the router refreshes the DHCP lease every few days.
6. Save all changes and restart your router.
7. Perform one final reboot of the Mysa thermostat by toggling the circuit breaker for the baseboard heating for 10 seconds, then flipping it back on.

If That Didn't Work

• Create a Dedicated 2.4GHz SSID: If your router refuses to disable Band Steering, create a "Guest Network" specifically for your smart home devices. Name it something distinct (e.g., "Home_IoT") and set it strictly to 2.4GHz. Reconnect your Mysa to this separate network to isolate it from 5GHz interference.
• Adjust Wi-Fi Channel Width: In your router settings, change the 2.4GHz channel width from "Auto" or "40MHz" to a fixed "20MHz." The Mysa is more stable on a narrower channel, and 40MHz often causes signal overlap and intermittent drops in crowded residential areas.
• Check Signal Interference: Ensure the thermostat is not mounted directly against a large metal mirror or behind a thick masonry wall. If the signal strength (RSSI) is too low, the device will drop the connection to save power. If possible, move your router closer or add a 2.4GHz-specific range extender.
• Update Firmware via App: Check the Mysa app for a pending firmware update. If the device is offline, reboot it one last time to get it online, then immediately navigate to Settings > Device Info to trigger any available updates that may contain Wi-Fi stability patches.

Heads Up

• Avoid WPA3: The Mysa works most reliably with WPA2-AES encryption. If your router is set to "WPA3 Only," the thermostat may connect intermittently or fail to authenticate after a reboot.
• Power Cycle Sequence: Always reboot your router before rebooting the thermostat if you have changed network settings; otherwise, the thermostat may attempt to connect using old, cached credentials.
• Avoid "Smart" Power Strips: Ensure your router is plugged into a stable power source. Voltage sags in the router can cause it to drop 2.4GHz clients while maintaining 5GHz connections.