Alarm message of LCD panel—Water error

LCD panel shows the following information:

Here are the reasons:

● Water chiller（water pump）is not turned on

Please turn on the water chiller before power on the machine, like below.

● Signal cable for water protection has no connection

Please has signal cable connected, like below.

● Wiring problem

Please check it according to the video below.

https://www.youtube.com/watch?v=zPV8moEZNh8

End.