Cummins/Onan — Testing Shore AC Present
Testing & diagnosis · EC-30 shore AC input
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKB, Cummins/Onan HDKC
Before you start
- Do not connect 120VAC or 240VAC line voltage to the EC-30! It will be damaged and will not be covered by warranty.
Procedure
- Be sure the Shore AC is disconnected and do not do this test with the genset running.
- Navigate to the Shore AC Present display and press ENTER; the display says Turn On Shore AC.
- Plug the shore AC back in or turn the breaker on; the display changes to read AC Ok ENTER.
- Press ENTER to exit the test.
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKB →, Cummins/Onan HDKC →
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.