All Mill Oil Heaters (with exception of AB-H700MINI, AB-H1000MEC and JA-series) have a lightning symbol on the heater indicating if the heater is generating heat or not. If the lightning symbol is lit the heater should be generating heat.
If the heater for some reason does not generate heat when the lightning symbol is lit, there is likely a problem with your heater. To troubleshoot if the heater is defect or not, please conduct the following routine:
Reset the heater. Please note AB-H700MINI, AB-H1000MEC and JA-series cannot be reset.
Set the heater to maximum temperature (35 degrees Celsius). JA-series can be set to MAX for troubleshooting
Within 5 to 10 minutes your heater should be warm. You can control this by holding you hand over the top of the heater.
If the heater still does not produce heat, please return it to the store where it was purchased. Remember to bring your receipt if you're unsure whether your purchase is registered in the store's system.
If the store is unable to help you or you experience other issues with the warranty process, please contact Mill Customer Support.