Dometic Display fault 22 fault code — Refrigerator
Applies to: RUA refrigerator
What Display fault 22 means
The official Dometic RUA support page for display fault 22 says to check the battery level or charge, then reset the error with the encoder button.
Owner-safe checks
- Record display fault 22 and take a photo of the display.
- Check battery level or charge only from owner-visible RV monitor panels or normal refrigerator controls.
- Reset the error once by pressing the encoder button for 3 seconds until a beep is heard.
Service-only work
- A continuing display fault 22 must be handled by an authorized service provider.
- Battery charging, DC supply, wiring, fuses, sensors, and control electronics are service-only.
Safety boundary
Do not service battery charging circuits, DC wiring, fuses, sensors, or refrigerator controls; use only owner-visible battery-level checks and front-panel reset before qualified service.
Official sources
Related symptom guides
- RV appliance low-voltage warning
- RV refrigerator is not cooling
- Pre-service checklist for RV appliance calls