TP-6844 1/13 Section 4 Troubleshooting 63
Figure 4-4 Troubleshooting Chart
No output
voltage
DC output circuit
breaker open
Check for DC voltage on the
generator side of circuit breaker. If
there is DC voltage on the
generator side of the breaker, then
a problem in the load circuits is
causing the line circuit breaker to
trip.
Check for and correct short circuits
or overloading on the load side
before resetting the circuit
breaker.
—
Alternator Perform alternator
troubleshooting, Section 5.2.
Make repairs based on results
from alternator troubleshooting,
Section 5.2.
Section 5.2
Controller Check the controller settings. Adjust controller settings. Section 3.3
Troubleshoot the controller as
described in Section 4.10.
See Section 4.10. Section 4.10
Open wiring,
terminal, or pin in
buildup circuit
Check wiring. Replace wiring as necessary. W/D Section 7
Rectifier Perform rectifier troubleshooting,
Section 5.3.
Make repairs based on rectifier
troubleshooting, Section 5.3.
Section 5.3
Stator (open,
grounded, or
shorted windings)
Check voltage and continuity as
described in Section 5.3.
Repair or replace the stator if
indicated by the test results.
Section 5.3
* VSC controller settings can be checked and adjusted using the controller user interface or using a personal computer running
SiteTech software.
Problem Possible Cause Test Corrective Action Reference
W/D = Wiring Diagram(s) (Section 7) Engine S/M = Engine Service Manual
I/M = Generator Set Installation Manual O/M = Generator Set Operation Manual
S/S = Generator Set Specification Sheet