The root cause of App pairing problems lies in the phone and the thermostat failing to connect successfully to the same 2.4GHz local wifi network.
The ideal pairing location would have just a single 2.4GHz wifi network with no network extenders or other available connections. However, many homes and offices have multiple available networks, hotspots and network extenders offering 2.4 & 5GHz connections; not to mention “Wifi Assist” on your mobile trying to switch you over to 4G; strong signals from neighbours houses etc. So very often it is possible your phone may be on one network (which may not even be your home network), whilst the Thermostat itself initially has no idea which network to connect-to out of the many choices it may be offered.
So we need to get the Mobile App and Thermostat on the same 2.4Ghz network in order to pair. Don’t worry! We’ll show you how to sort it out.
1. If you are getting a message “Device Not Found” after attempting pairing, perform this step first, otherwise proceed with the next steps.
Read MoreIf you are getting this message and only have a single network then ensure the controller is as close as possible to the router during pairing. If you have a T-MT, you can temporarily position it near the router using a phone charger with micro USB to provide power. If you have a T-PL, just plug it in to a socket close to the router. Then attempt to pair using the procedures in the installation manual. Once you have paired successfully, move the controller to its intended location. Please note though, like any wifi device, if the thermostat is outside of network range of your router, you will not be able to manage it via the app. You cannot manage a wireless thermostat on a network extender (where attached devices are just “guests”. The thermostat and app both need to be paired and operated on the main network.
2. For all other failure messages found during pairing, please perform the following steps.
– If you have an Apple IoS phone with “Wifi Assist”, please disable it before proceeding. (You can re-enable it after pairing is complete). This will keep you on your home wifi networks.
– If your router is “Dual Band”, i.e. it offers both 2.4GHz and 5GHz signals, check and amend the following:
Either
– In the connection settings on your phone, your router may publish two SSIDs: one marked including the numbers 24; one marked including the number 5. Please be sure to connect to the option with the numbers 24.
Or
– Your router settings (usually available by typing 192.168.1.1 into a web browser address bar and then entering the router username and password at the router logon screen) may offer the option to temporarily switch off 5GHz. You can re-enable it after pairing.
Or
– If your dual-band router only publishes a single SSID, then move the phone as far away as possible from the router whilst still showing a Wifi connection on your phone. Because 2.4GHz is a stronger signal than 5GHz, moving the phone away from the router should force the router to offer you the 2.4GHz connection.
Try pairing again using the procedure in the manual.
If this still does not work, then you should try the Alternative Pairing “AP Mode” offered by the Smartlife app. This mode forces both your phone and Thermostat to be on the same network and should be used in situations where many signals may be available (or if you are moving the controls from one network to another).
– Click the + sign in the SmartLife Home screen to add a new device.
– Select “Small Home Appliances” and then “Thermostat” as you did before.
– Select “Other Mode” in the top right of the screen and select “AP Mode”.
– Disconnect your thermostat from the power for 10 seconds then reconnect it.
– With the Thermostat off and showing “OF” on the screen, long-press the “P” button (T-PL) until the letter “P” flashes on the screen or if you have a T-MT press the “PRG” button until the Wifi Symbol flashes slowly. (Long Press PRG a couple of times to satisfy yourself which is a quick flash and which is a slow flash. You want the slow flash).
– Confirm to the App that the device is reset. Then choose the network and password for your home router and click “Confirm”. When you do this, Smartlife will switch to your Phone’s network connections and show “SMARTLIFE” as an available connection. Select this option and connect to it. What this step does is to connect the phone direct to your thermostat and pass the network login details direct to the thermostat. This allows your thermostat to get onto the correct network. Once connected, use the back keys to get back to the Smartlife App. The App will then disconnect from the thermostat and reconnect to your home network where it will re-commence a discovery where it will now find the thermostat as it is now definitely connected to your home network.
– Your thermostat should now appear in the Home screen of your app.
If you do not succeed with the above, please close this popup and use the contact form on the page to contact Herschel for help. Please be sure to tell us exactly what is not working and if possible send us any error message or screen shot.
