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  1. Mill International BV
  2. Mill - FAQ
  3. General Q&A

General Q&A

  • API
  • Can I use my Mill-devices outdoors?
  • Can I use the heater unattended?
  • Can Mill heaters be used in wet rooms/bathrooms?
  • Can multiple people control the same Wi-Fi-devices?
  • Day-/night function
  • Do Mill heaters have different power consumption and efficiency depending on the model?
  • Frost protection
  • How do I create a weekly program?
  • How does the statistic work?
  • How much heater wattage do I need?
  • I don't remember my password. What do I do?
  • I have changed the network at home. How do I reconnect my devices?
  • I need a spare part for my device
  • Installation-videos
  • My heater doesn´t heat – What do I do?
  • My heater is heating too much/too little relative to set temperature. What do I do?
  • My heater makes noise. What do I do?
  • Should I choose an oil heater, floor heater or panel heater?
  • The display on my heater shows CH / CO CHL / COL and the heater cannot be controlled
  • The heater´s power cord is too short. Can it be extended?
  • The lights in my house flicker when I turn on the heater. Why is that?
  • The room temperature is not right. What can I do?
  • What happens if the power goes out?
  • What is PID-control?
  • What is the highest / lowest temperature I can set on my device?
  • Where can I find the model number/serial number of my device?
  • Why do my lights blink with PID-control?
  • “FO” shows in the heater´s display. What does it mean?
  • “OF” shows in the heater´s display. What Does It Mean?
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