I have a cat E70B excavator that has a "Battery" and "Control" light and alarm going off at the same time. The "battery light has been illuminating when the machine is warming up and it turns itself off a few minutes into operation. This seems fairly normal to me. Not sure if it is, but it resolves itself and everything seems fine so?? This morning at the same time, as the machine was warming up and two minutes into digging, the "control" light just below the "battery" light illuminates and a loud alarm sounds. I have no idea what that is supposed to indicate. Any suggestions? Thanks in advance for any help. It is appreciated.
Fixed it! Turns out it was a loose battery connection that turned the 24 v into 12v. I had checked that first but didn't notice it until after I checked it the second time.