Help with dosing pump GHL Dosing unit

[Alberto Magalhaes]

Hi all
I have a dosing pump that from one moment to another, the pumps began to work non-stop ... just stop when I unplug the unit from power.

Has anyone had a similar problem and / or have any justification for this behavior?

thanks in advance
Regards
Alberto

 

[swk]

Wow...that frightening. Is this the GHL 2 or the older version?

 

[BryanS4]

I've never had this problem. I have three GHL units that are as steady as they come.

 

[Alberto Magalhaes]

is the older version.