Cummins/Onan — Converting Day Tank Controller from 240 VAC to 120 VAC
Adjustments · fuel transfer pump control
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQAD, Cummins/Onan DQAE, Cummins/Onan DQAF, Cummins/Onan QSM11 engine
Procedure
- Remove two jumpers between TB1-6 and TB1-7; connect one between TB1-5/TB1-6 and one between TB1-7/TB1-8
- Move selector switch S103 on control PCB to up position for 120V
- If equipped with transformer, remove jumpers between H2/H3 and connect H1/H3 and H2/H4
Full service-parts list: Cummins/Onan DQAD →, Cummins/Onan DQAE →, Cummins/Onan DQAF →
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.