Cummins/Onan RSS100 / RSS200 — Control Replacement Procedure
Repair & overhaul · Controller
For the Cummins/Onan RSS100 / RSS200, from the Cummins/Onan service manual.
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Before you start
- The transfer switch presents a shock hazard that can cause severe personal injury or death.
Procedure
- Move the operation selector switch on the generator to Stop (Off).
- Disconnect the external battery charger from its AC power source.
- Disconnect the generator starting battery (negative [-] lead first).
- Remove AC power to the automatic transfer switch.
- Remove the transfer switch cabinet door panel.
- Unplug the P1, P2, P3, and P4 connectors from the back of the control.
- Loosen and remove the two retaining clips and the control from the control mounting bracket.
- Insert the new control in the mounting bracket with the control gasket installed.
- Use the two retaining clips to secure the control to the mounting bracket.
- Reconnect the P1, P2, P3, and P4 connectors to the control.
- Reinstall the cabinet door panel and restore power.
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.