Cummins/Onan — If a fault fails to signal an audible alarm, but does

A Cummins/Onan service procedure — check it applies to your exact model before use.

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Procedure

1. 1. Check S2 and S3 switch positions using Table 3 and Figure 5. Verify that the input’s corre- sponding audible alarm switch (S1 or S2) is set to ON.
2. 2. Apply power to the annunciator and verify that the control is running, LED DS21 should be flashing (Figure 7). If LED DS21 is not flashing, the PCB assembly is defective.
3. 3. Verify that during the fault input condit

Source: manual:900-0282 Onan Network Annunciator Module (6-1995).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.