Cummins/Onan RV QD 3200 — Accessing Service Screens
Testing & diagnosis · Operator panel
For the Cummins/Onan RV QD 3200, from the Cummins/Onan service manual.
Applies to: Cummins/Onan HDZAA, Cummins/Onan RV QD 3200
Procedure
- Press Gen OFF.
- Hold down the START button and Display ON together.
- Release both buttons when RV QD 3200 is displayed.
- IMMEDIATELY press the START button 3 times; GEN OFF should be displayed.
- Press the START button again to start the generator set.
- Once started, press the START button to view the service screens.
- Use the START button to navigate through the service screens.
Full service-parts list: Cummins/Onan HDZAA →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.