FAQ Wifi

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Mill WIFI – Frequently asked questions

Questions about Mill WIFI heaters

Generation 2 heaters were introduced in season 2019, Generation 3 heaters are introduced in the winter of 2021 and all have WIFI3 in the product code

From the 21/22 season all Millheaters produced are Generation 3 heaters. The design remains the same, but the PCB (Printed Circuit Board) has been updated, allowing new functionality for the WiFi heaters.

For panelheaters there is new software and hardware with the following new features:

  • Super easy connection with Bluetooth allows it to automatically connect to your Wi-Fi network, no matter what type of router you have.
  • The first and only heater with a PID (Proportional Integral Derivative) thermostat. When the desired temperature is reached, the stove will maintain this temperature by reducing the power level. This means more stable heating with less temperature fluctuations.
  • Predictive heating – The panel heater heats the room so that the desired temperature is reached at a specific time. The panel heater has an advanced algorithm that allows it to learn how fast/slow the temperature in the room is going up/down. That way, it knows when to start heating to reach the desired temperature at the time you have scheduled in the app.
  • Child safety lock – can be activated in app or on the heater
  • Commercial lock for landlords – can be activated in app or on the heater
  • Open window function that switches off the heater automatically when a window is opened – can be activated in app or on the heater
  • OTA (Over the Air) updates allowing new exciting features to be added to the software
  • Touch screen control panel
  • Local Res API – control the heaters with your own smart home solution
  • Possibility to let Mill Sense Air override the heater´s temperature sensor – allowing more precise temperature control

  • For portable heaters like convection and Oil radiator, generation 3 offers:

  • Super easy connection with Bluetooth allows it to automatically connect to your Wi-Fi network, no matter what type of router you have.
  • Super easy connection with Bluetooth allows it to automatically connect to your Wi-Fi network, no matter what type of router you have.
  • Child safety lock – can be activated in app or on the heater
  • Commercial lock for landlords – can be activated in app or on the heater
  • OTA (Over the Air) updates allowing new exciting features to be added to the software
  • Local Res API – control the heaters with your own smart home solution
  • Possibility to let Mill Sense Air override the heater´s temperature sensor – allowing more precise temperature control
All heaters contains the serial number and product code: – Generation 1 serial number always starts with SKAG (not introduced in the Benelux) – Generation 2 serial number always starts with SKAH and product code ends with WIFI – Generation 3: product code aways ends with WIFI3
Yes, this can be done via a Mill WIFI socket.
No, the heaters must be connected to the Millheat cloud to follow your settings in the Millheat app. That is why you cannot connect the heaters to a local network without internet access
Yes, in the same way as at home. The only thing you need is Mill WiFi, WiFi router and internet access at the location. You do not need a hub or to replace the thermostats. You can easily switch between the different locations on the home screen in the Millheat app. Follow the instructions in this video below to switch between houses:
Yes, the heater is connected to the local WiFI network in your home at all times. You can operate the heater from anywhere in the world (if you have WiFi or 3G / 4G / 5G)
All settings are stored in the Millheat cloud and are therefore automatically synchronized with the heating when the power (and internet) has returned. The heater follows the last recorded temperature until the power (and internet) has returned.
The heaters cannot follow the phone’s clock because this would cause problems if you travel to a different time zone. To prevent this, the heaters follow the time in the Millheat cloud. The time in the Millheat app may differ from the time on your phone.
To control the heating locally, do the following: Disconnect Press the WiFi button on the control panel of the heater once. This allows you to manually set the desired temperature (the WiFi lamp on the control panel of the stove flashes green slowly) with the + and – buttons. Connect: Press the WiFi button on the stove’s control panel again to reconnect the heater to the Millheat cloud (the WiFi light on the control panel shows green light).
The heater loses the internet connection to the Millheat cloud and you cannot operate the heaters with the app. You can also see a red light on the WiFi light on the control panel of the stove. The heater does not receive updates from the Millheat app and follows the last temperature recorded until it is online again. The heater automatically connects to the Millheat cloud when the internet is active again NB! Remember that you can operate your heater locally / manually (when internet is not available).
  • Press the WiFi button on the control panel of the heater once. This allows you to manually set the desired temperature (the WiFi lamp on the stove’s control panel slowly flashes green) with the + and – buttons.
  • Press the WiFi button on the stove’s control panel longer to reconnect the stove to the Millheat cloud (the WiFi light on the control panel displays a green light).
  1. Turn off the heater (ON / OFF switch on the right side of the heater)
  2. Press the settings button while you switch the heater on again (if you have an older version, the button is marked with an F).
  3. You can release both buttons when you reset the display (the lights on the display blink).
  4. The heater starts at the standard temperature of 22 degrees Celsius.

Questions about WiFi routers

 
    1. Make sure your WiFi distributes b / g / n signal. Most routers do this automatically and in that case you don’t have to change anything. You can check the b / g / n status by accessing your router through your computer.
    2. Some routers have two different networks. Make sure you are connected to the 2.4 GHz network.
NB! It is important that you use the 2.4 GHz network when choosing WiFi!
          1. Ghz network (the network to which you MUST be connected when installing the heater)
          2. 5 Ghz network (the network you should NOT be connected to when installing the heater)
          3. After installation, your mobile phone can be connected to one of the two Ghz networks
The reason why we chose the 2.4 GHz network for the WiFi module is the superior range in this network.

Settings: If you cannot connect our product to your Wi-Fi network, it is likely that the default settings of the internet router on the 2.4 GHz Wi-Fi band require some adjustments. Our products are compatible with “all” routers, but we have the experience that some of the router on the market do not like IOT (things that work on Wi-Fi, but no phone, PC, tablets, etc.). That is why they sometimes need adjustments to make everything work. Generation 2 products require the following settings on the 2.4 GHz WiFi network:
      1. 2.4 Ghz
      2. 802.11b / g / n
      3. WPA2 password (AES encryption)
      4. Channel 10 (or lower)
      5. 40 MHz bandwidth
      6. DHCP must be enabled

ASUS – Ubiquiti router:
In addition, this must be adjusted if you have an ASUS or Ubiquiti router: Go to: Wireless menu >> Professional tab >> Airtime Fairness. Disable this setting. Once these settings have been set, you can reset the product and reconnect. (Resetting is done by holding the product’s Wi-Fi button for 5 seconds)

If you use a firewall on your network:
Also make sure that you have the following ports open in the router’s firewall: TCP / IP:
      • 5000 (http gateway, app with platform)
      • 443.9005 (https gateway, app with platform)
      • 9100 (connect device load balance to cloud)
      • 8000.9000.9004 (device connects to cloud)
      • 9001 (device data push, device control cmd, app with platform)
      • 80 (all third-party services)
UDP:
  1. 6689 (unicast in intranet, apparaat met cloud via router)
  2. 7689, 8689 (uitgezonden in intranet, app met apparaat via router)
If you cannot connect the Mill heater to your WiFi network, or you lose the connection, the network is unstable, then it is likely that the default setting of the router on the 2.4 Ghz WiFi band needs some adjustments.

Before attempting to connect your Mill device to the App, please do the following:
  • Restart the phone to make sure that no services are frozen on the phone
  • Restart the Wifi router
  • Make sure the phone is connected to the 2.4 Ghz WiFi network. Once the heater is connected you can use 5Ghz again
  • Make sure that VPN is not activated on the phone or router, as VPN will prevent the app from connecting to our servers.
  • Make sure you do not have an anti-virus program with an active firewall on the phone. The firewall can block the app from connecting to our server.
  • Make sure the heater has good WiFi coverage.

    If all the above suggestions have been implemented and you still cannot connect, the WiFi router may need to be adjusted. These adjustments are only temporary and you can change them again as soon as the heater is connected.
    Please make the following changes:
    • Turn off your 5Ghz
    • Change the 2.4 Ghz wifi model from AUTO / 802.11b / g / n to 802.11 G. Some routers may not have 802.11G option, try the 802.11 G / N. There are also routers that use other parameters, they call them “Modes”. If you have such a router, switch from Mode 1 to Mode 3. If the heater is connected, we recommend that you leave it in Mode 2.


    Question: I have a mesh router where I cannot make the suggested change. What can I do?
    To connect / configure the device, you need to stay on the 2.4 Ghz network. On some mesh routers, it broadcasts both the 2.4 GHz and 5 GHz on the same network name. The phone will select the band depending on the signal strength. One way to get around this is to place the device and smartphone a good distance from the nearest mesh node. The distance makes the 5 Ghz signal weak and the phone will automatically select 2.4 GHz. Once the device is connected, you can move it to any location you want.

    Question: How do I log in to my router?
    See this link for a video on how to connect to a WiFi router: https://www.youtube.com/watch?v=IMfSDD_ARiw

    Question: I cannot connect to my router.
    We advise you contract your internet provider. They can help you make these adjustments according to our guidelines. If they cannot help you, please send us an email with the make and model of your router. Also write in the email what you have tried so far and how far you have come in the connection process. The more information you give us, the faster we can give you the right solution.
  • Not necessarily. As long as the WiFi router has enough capacity for the number of active devices and distributes the b / g signal, this should not be a problem.
    Make sure you have enough WiFi signal when you plan to mount the heater. Remember that the WiFi signal range on the heating is lower than what you experience with, for example, mobile phones. Make sure the heating, telephone and WiFi router are close together during the installation. Different building materials will influence the range of the WiFi router. The range of the WiFi signal is mainly influenced by the type of material with which the house is built (concrete, woodwork, etc.) If you experience a weak WiFi signal, we recommend increasing the signal using a WiFi range extender (repeater / extender) to ensure that the heaters have a stable signal.
    No, but check if your WiFi router is transmitting a 2.4 GHz signal and if you have available capacity for your devices on the router.

    Questions about the Millheat App

    An independent device is a heater that is not connected to a room in the Millheat app. The independent devices will not follow a program if it is not connected to a room. Instead of following a program, it can be operated via a timer function that makes it possible to switch the heating on and off. All kinds of WiFi heaters can be used as independent devices, but the heater must be Generation 2. Follow the instructions in the instruction video below to assign an independent device to a room:
    To date with none, but we are working with IFTTT to make this possible.
    It is possible to change the e-mail address on which your user account is located via a few simple steps in the Millheat app:
      1. Go to the home screen:
      2. Go to settings by selecting the three-line symbol
      3. Select “Personal Information”
      4. Select “Change email address”
      5. Enter the new email address and select “Get PIN”
      6. Enter the pin code in your e-mail inbox and insert it
    press OK
    1. Go to the home screen:
    2. Go to settings by selecting the three-line symbol
    3. Select “Personal Information”
    4. Select “Change email address”
    Yes You can easily switch between your locations at the top of the home screen in the Millheat app (see below)
    Add a user to your house: Select the icon with the three dots in the upper right corner of the home screen. You will see a menu in which you choose “Share house”. NB! Those with whom you share your house can arrange all heaters in the house that you share. They can control the house in the same way that you can. Follow the instructions in the video below to share a house: Remove a user from your house:
    1. On the home screen, select the settings icon with three lines in the upper left corner.
    2. Select “Users” in the “Settings” menu
    3. Select the house you want to edit
    4. Select “Remove sharing” from the person you no longer want to give access to the house.
    Follow the instructions in the instructional video below to remove a user from the Millheat app:
    Yes, but only if you give them access to control your heating via the Millheat app. Select “Share the houses” and enter the email address of the person you want to grant access (note: the person must first register as a user on the Millheat app with the email address to which you send an invitation) . Note: you only share one location per invitation. If you want to share multiple homes / locations, you must repeat the sharing process for each home. NB! Those with whom you share your house can arrange all heaters in the house that you share. They can control the house in the same way that you can. Remove a user from your home:
      1. On the home screen, select the settings icon with three lines in the upper left corner.
      2. Select “Users” in the “Settings” menu
      3. Select the house you want to edit
      4. Select “Remove sharing” from the person you no longer have access to the house
    want to give.
    Check if the e-mail with the pin code is not in the spam folder of your e-mail. Please note that you only have to enter your email address before selecting “Get PIN”. The password you have chosen is entered if you have received the PIN code by e-mail.
    Select “Register” at the bottom of the login screen and follow the instructions below:
    1. Enter your email
    2. Select “Get PIN”
    3. Include the pin code in your e-mail inbox and insert it
    4. Add your selected login password for the Millheat app
    5. Select “Next”
    6. Add your name and end the registration
    To use the Millheat app, the following minimum OS requirements apply: iOS: Version 8.0 or newer (Please note that you need iPhone 5S or newer to use the Millheat app. This is a requirement from Apple and unfortunately we cannot support older models) Android: Version 4.2 or newer
    You can download the Millheat app for free from the App Store (for Apple devices) and Google Play (for Android devices). Search for: Millheat System requirements: iOS: version 8.0 or newer (note: you need iPhone 5S or newer to use the Millheat app) Android: version 4.2 or newer
    This problem is most likely related to the fact that the Wi-Fi network you are connected to has a very strict firewall which prevents the app from communicating with the server. This is a common problem when you are at work, for example, where the firewalls are usually extra strict. Make sure the Wi-Fi network has the following ports open in the firewall, then everything will work normally again: TCP / IP 5000 (http gateway, app with platform) 443.9005 (https gateway, app with platform) 9100 (load balance or device connecting to cloud) 8000,9000,9004 (device connect with cloud) 9001 (device data push, device control cmd, app with platform) 80 (all third party services) UDP: 6689 (unicast in intranet, device with cloud via router) 7689, 8689 (broadcast in intranet, app with device via router) Alternatively, you can disconnect from Wi-Fi and use only your phone’s mobile data. You will see that the app is working normally.

    Questions about using the Millheat App

    Google Play displays the permissions that the app needs when you download the Millheat app, but it can give a somewhat skewed view of the information that is actually being used because they have fairly broad categories. Below you can see the screenshot that you will find when you download the app: What does the Millheat app actually have access to? Photos / Media / Files: The app must have access to the files on the phone so that the app can be installed on your Android device. There is no access to photos / media. WiFi connection information: The app needs this permission to connect your Mill WiFi devices to your WiFi Device ID and call information: Google Play needs the device ID to download and install the app. There is no access to call information.
    Follow the instructions in the video on how to add a new heater in the Millheat app:
    Calibration allows you to calibrate the temperature of the heater against the actual temperature in the room without being physically present. You need a Generation 2 Mill heater for the calibration function.
    The timer function on the independent device can be compared to a normal timer on your phone. To set the timer on an independent device, do the following:
    1. Choose from which independent device you want to set a timer in the home screen overview
    2. Select “Timer”
    3. Press the ‘+’ sign in the upper right corner
    4. Set the timer:
      • Set the desired time and on which weekdays you want to use it
      • Choose whether the timer should turn the heating on or off
    5. Choose a name for the timer
    6. Select “Save” when you have set the timer
    Keep in mind that you have to make two timers if you want the heating to be switched on automatically at 2 p.m. and 5 p.m.
    Yes, it is possible to change the room or to make it independent of a room (only for Generation 2 heating). Change the room to which the heating is connected: Perform the following steps from the home screen:
      1. Choose the room that the heater is currently connected to
      2. Select “Device list” at the bottom of the “Room” Screen
      3. Select the heater that you want to change to another room
      4. Select the “…”
    symbol
    1. Select “Change room”
    2. Choose the room you want to change or create a new room by selecting the ‘+’ sign in the top right corner
    Follow the instructions in the video below to change the room to which a heater is connected: Make the heater independent (independent device): For Generation 2 heaters it is also possible to remove the connection to a room and to make the heating independent (no program follows).
      1. Choose the room that the heater is currently connected to
      2. Select “Device list” at the bottom of the “Room” screen
      3. Select the heater that you want to change to another room
      4. Select the “…”
    symbol
    1. Select “Unassign Room”
    2. Select “OK”
    3. The heater is displayed in the “Independent Device” overview on the home screen.
    Yes, you can. Perform the following steps from the home screen:
    1. Choose a random room
    2. Select “Device list” at the bottom of the screen
    3. Select a heater from the list
    4. Select the three-point symbol
    5. Select “Change room”
    6. Select the “+” symbol in the upper right corner
    7. Write the desired name for the new room and select “Create Room”
    8. Move the heater back to the old room by repeating steps 1-5, and then select the room in which the heater was originally.
    Yes, with generation 2 heaters it is possible to switch the heater off via the Millheat app. On the heating screen in the Millheat you will see an OFF button centered at the top of the screen. Press the OFF button and the heater will switch off (note: you must activate “control device individually” to use this function).
    No. The heater stays on and can receive instructions. The display shows “OR” and the heater will not generate heat regardless of how cold it gets in the room. This off model / off mode is only available for Generation 2 heaters.
    It is possible to only share parts of your house (if you do not want to share all your rooms). You can share the house or a room by following these steps:
    1. In the home screen, select the three-dot symbol in the upper right corner
    2. Select “Share the houses”
    3. Select “Ok”
    4. Type the email address of the person with whom you want to share your house or room
    5. Select “Share the house” or “Share individual rooms”
    You can remove the users at any time by selecting “Settings” and “Usesr”. Please note that sharing is not updated, so if new Mill WiFi devices are added, you must delete the sharing and re-share the house so that the users you share the house with have an updated house Follow the instructions in the video below to share individual rooms:
    Yes, you can. On the home screen you can see the registered temperature of the rooms. If more than one heater is connected to the room, the average temperature is displayed. It is possible to calibrate the heater if the temperature deviates from the actual temperature in the room.
    Your stove will follow the “Standard Program” as standard. It is not possible to edit or delete this program. You can create your own programs that better match your weekly schedule. To change the program of the individual rooms, select “Default program” (see figure on the right). A pop-up list appears. Swipe left or right to go to the program that you want to use for the different rooms. Confirm by selecting the name of the program. Follow the instructions in the video below to change the program that follows a room:
    In most cases, you are in Normal mode, which means that the heaters in your house follow the programs of the allocated rooms.
    Yes, you can.
    To prevent a program from being changed only because you come home early one day, you can overwrite the program instead. You have 4 modes available:
    • Comfort
    • Sleep
    • Away
    • Off
    Remember that you can always set your house or room to the normal mode (“house” symbol). The heaters then follow the assigned programs for each room. You can overwrite at different levels, depending on what you want: Overwrite your home (all heaters in your home):
    1. On the home screen of the Millheat app you can see in which mode the house is set in “rooms”
    2. Select the desired mode
    3. Select the number of hours you want the transfer to last
    4. After the desired transfer period has passed, the heaters in your home will automatically return to normal mode (where they follow the assigned programs)
    Follow the instructions in the video below to overwrite the entire house program: Overwrite a single room (and the heaters in this room):
    1. On the “Room” screen of the room where you want to switch modes, you will find four symbols under the “Override Program” heading.
    2. Select the desired mode
    3. Set the number of hours you want the transfer to last
    4. After this desired period has elapsed, the heaters in the selected room will automatically return to normal mode (where they follow the assigned program).
    Follow the instructions in the video below to overwrite the entire house program: Overwrite a single heater:
    1. Find the heater you want to overwrite in the Millheat app (select the room to which the heating is assigned in the app and select “units” at the very bottom of the screen)
    2. Select “control device individually”
    3. Set the desired temperature
    To remove a program do the following:
      1. Select “Programs” on the home screen
      2. Select the program that you want to remove
      3. Select “delete the program”
    NB! “Default Program” cannot be deleted Follow the instruction video below about how to remove a program:
    If you do not see a temperature in the app, it means that the connection has been lost. Two tips: 1) Switch off the heater, wait 10 seconds and then switch it on. It should reconnect. This on the assumption that you have not changed your WiFi network name or password, in that case you must reset the heater and add the heater again to the app. 2) To prevent the heater from losing its connection in the future, we recommend that you log in to the router and make the following changes: – Channel 1-10, do not use AUTO – DHCP must be enabled (enabled) – WMM and APSD or other power-saving or traffic-prioritizing modes in the router must be disabled (this will keep the heater connected)
    Holiday mode is a function that allows you to easily set all heaters connected to your house to a certain temperature for a certain period. This is a good option when you go on vacation instead of resetting your programs. Holiday mode can for example also be used when you leave your holiday home at the end of the weekend. You activate holiday mode by following the following steps:
    1. Select the settings icon on the home screen (three lines in the upper left corner).
    2. Select “vacation mode”.
    3. Choose the house for which you want to activate the vacation mode and select “next”.
    4. Set the date and time for the vacation (start and end).
    5. Activate the vacation mode “.
    6. Set the desired temperature for all heaters assigned to your home during the holiday season.
    You can set a vacation period in the future, but no more than one vacation can be registered at a time. When the vacation mode is active, your home screen will tell you that your home is in vacation mode.