Heating problem

Why is there a noise from the power supply?

About the power supply fan, when the tempreture is below 10, the oil in the fan will be solidified. It would affect the fan and produce the noise. This is normal,don’t worry. When printer works for a while, the oil will be melted and the noise will be stopped.
Tips:If you can’t stand the noise, you can contact our after-sale service to to replace the power supply fan. The type is 12V,0.15A, our after-sale will guide you to change.