Why is the indicator light of the dispenser not lit?

There may be multiple reasons for the display lights no working. The followings are all possible causes and solutions, please check if there is a reason for your dispenser.
Possible causes and solutions:
1、The power switch is not turned on. Please turn on the switch.
2、The power is not connected. Please check if the plug is plugged in.
3、The fuse is broken. Please contact the after-sales personnel to replace the fuse.