tchndie
New member
Hello. I am using a GHL SA 4 pump doser and last night when I went to bed it was working fine. When I got up this morning my pump number 3 was running and will not shut off!! I tried disabling pump number 3 but it still won't shut off! The only way It will shut off is if I unplug the unit. Please help!! Any ideas why or how to fix it??
