This may also indicate that the power supply connector or source is insufficient. System activates successfully but tracking performance is poor in all conditions. Be certain that the systems magnetic sensor isn't being overwhelmed by a local disturbance. As you rotate around the full range, the displayed magnetic heading should progress completely through the 0-359 range of the compass. If not, relocated the system to another location and try again.
System performs poorly in rougher conditions.
The compass module within the antenna motor is not communicating properly. Cycle system power. If this fails to remedy the problem, call for service or repair. Inspect the RG-6 cabling between your receiver and antenna LNB looking for cuts or pinches in the cable. Disconnect the cable at both ends and verify that the core and shield aren't shorted together.