Reconnect After Wi-Fi Disconnection

Last updated: July 20, 2026

If your Mysa for Baseboards has gone offline, this guide walks you through the most common causes and how to reconnect. This is different from initial pairing issues — for that, see Pairing & Wi-Fi Troubleshooting.

Applies to: Mysa for Baseboards V2, Lite, and V1

Why Your Mysa Disconnects

  • Router restart — power outage or ISP issue temporarily dropped the connection

  • Wi-Fi password changed — your Mysa still has the old password saved

  • New router — you replaced your router or switched ISPs

  • Network congestion — too many devices on your 2.4 GHz band

  • Router settings changed — band steering, MAC filtering, or network name changes

  • Weak signal — Mysa is too far from your router or access point

Reconnect After a Router Restart

Most disconnections resolve automatically after a router restart:

  1. Confirm your Wi-Fi is working — check that other devices can connect to your 2.4 GHz network

  2. Power cycle your Mysa — turn off the breaker for 30 seconds, then turn it back on

  3. Wait 2–3 minutes — open the Mysa app and let the thermostat reconnect automatically

  4. Check if it reconnected — press a button on the thermostat. If it shows the Bluetooth pairing symbol instead of the temperature, it lost its Wi-Fi credentials and needs to be added again (see below)

Note: Mysa for Baseboards only connects to 2.4 GHz Wi-Fi networks. If your router combines both bands under one name, you may need to temporarily disable 5 GHz or create a separate 2.4 GHz network.

When Wi-Fi Credentials Are Lost

If your Mysa's Wi-Fi credentials were accidentally reset, or your Wi-Fi password changed, you'll need to add the device again.

How to tell if credentials are lost: press any button on the thermostat — if the Bluetooth pairing symbol appears instead of the temperature display, your Mysa has lost its Wi-Fi credentials.

Reconnect to Wi-Fi:

  1. Open the Mysa app and tap Add Device

  2. Follow the in-app instructions to connect your Mysa to Wi-Fi

  3. When prompted, put your Mysa into pairing mode — press and hold both up and down arrows for 10 seconds. The Bluetooth symbol should appear on the display.

  4. Select your 2.4 GHz network and enter your Wi-Fi password

  5. Complete the setup process

Note: if your Mysa was already connected to your account, it will automatically restore your original settings, including schedules and configuration, after reconnecting.

Tip: if the Bluetooth symbol doesn't appear when you hold the buttons, try holding for a full 10 seconds without releasing early.

Connect to a New Router

  1. Confirm your new router has a 2.4 GHz network enabled

  2. Note your new network name (SSID) and password

  3. Follow the When Wi-Fi Credentials Are Lost steps above to add your device to the new network

Tip: if your new router uses the same network name and password as your old router, your Mysa should reconnect automatically after a power cycle.

Fix Persistent Connection Issues

If your Mysa still won't connect after the steps above, check these:

Router Settings to Check

  • Band steering — disable this feature, or create a dedicated 2.4 GHz network

  • MAC filtering — add your Mysa's MAC address to the allowed list (find it in Device Settings → Device Info)

  • Hidden network — Mysa can connect to hidden networks, but you'll need to enter the SSID manually during setup

  • Firewall and ports — confirm your router or firewall isn't blocking outgoing connections the device needs

Router Placement and Capacity

  • Distance from router — if your thermostat is far from your router or has walls/floors between them, consider moving your router or adding a Wi-Fi extender

  • Older routers — a router that's several years old may struggle to maintain stable connections as you add more smart home devices

  • Network congestion — the 2.4 GHz band has limited capacity; consider upgrading to a modern router with better 2.4 GHz performance if you have many Wi-Fi devices

Network Diagnostics Tool

If your thermostat keeps disconnecting or won't reconnect, use the built-in Network Diagnostics tool:

  1. Open the Mysa app

  2. Tap Support (top-right corner)

  3. Select Network Diagnostics

  4. Tap Run Diagnostics and wait for all checks to complete

What it checks:

  • Wi-Fi Connection — displays your current network name (SSID). On Android, it also shows signal strength (in dBm with a quality rating like Excellent, Good, or Weak) and whether you're on 2.4 GHz or 5 GHz

  • Speed Tests — download speed, upload speed, and latency; slow speeds or high latency can cause intermittent disconnections

  • Mysa Services — verifies your phone can reach Mysa's cloud services (API and MQTT); green means reachable, red suggests a connectivity issue between your network and Mysa's servers

Tip: if the Wi-Fi Connection check reports a 5 GHz band, your phone is connected to 5 GHz — make sure your router's 2.4 GHz band is enabled and your thermostat is connected to it.

Note: the diagnostics tool requires location permission to retrieve Wi-Fi network information. If prompted, allow location access so the tool can complete all checks.

Get Support

If the issue persists, email support@getmysa.com with:

  • Your Mysa's serial number (found on the back of the device)

  • Your router model

  • What you've already tried