Lippert · Ground Control 3.0 LCD leveling systems
Comm ErrorTouchpad lost communication with the controller
The touchpad and leveling controller are no longer exchanging data.
What it means
Plain-English answer
Lippert identifies an open, loose, or damaged harness connection as the primary troubleshooting path.
Owner-safe checks
What to check first
- 01
Stop movement and cycle the touchpad power once.
- 02
Record whether the error is constant or intermittent.
- 03
Look for obvious external harness damage without disconnecting energized wiring.
Safety boundary
Stop and call a technician when
- Do not operate jacks without reliable controller feedback.
- Harness testing or replacement is required.
Primary reference
Check the exact manual
Applicability: Ground Control 3.0 LCD leveling systems. The data plate and specification letter determine which procedure is correct.
Open Lippert Ground Control 3.0 troubleshooting manual ↗Source reviewed August 2026