Onan Display / HMI Failure

The control panel display is dim, unreadable, or has missing segments.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed LCD/LED display module, Loose ribbon cable or connector, Moisture ingress into the control panel, Faulty controller HMI driver

Safety first: Disable auto-start and disconnect the battery negative before opening the control panel.

Inspect panel for moisture: Look for condensation or water damage. Dry the area and correct any enclosure sealing issues.
Check connectors: Reseat the ribbon cable or plug between the display and the main controller. Inspect for bent pins.
Display replacement: If the display remains dim or has missing segments, replace the display module or the entire controller panel as specified by Onan.

Medium 3/5

Control Panel Display Module

Check Price on Amazon

We may earn a commission from links on this page.