Cummins/Onan — Modifying the Configuration
Adjustments · Control Panel
From a Cummins/Onan service manual covering: GT30160EQ5KA000, GT40063XN52A000, GT40063YN52A000, GT40063ZN52A000. Check it applies to your exact model before use.
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Before you start
- Incorrect settings can result in the transfer switch failing to operate correctly. Only authorized trained personnel should make changes to the control function settings.
Procedure
- Slide the selector switch to the Configuration Mode position. TDES is always the first function shown.
- Press the Test pushbutton to scroll through the various control function codes.
- Once the desired function is selected, press the Override pushbutton to change the associated value code.
- When configuration is completed, return the selector switch back to the Automatic Mode position.
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.