Set E start faliure on start fail over testing.

Set E start faliure on start fail over testing.

Hi Team, Site (B2)has three gensets. We have a engine not starting on a start fail over on Set E at B2 for next DC. It is isolated to the one set only, sets D & E are fine. With bothbattery isolators on the engine starts every time. I can confirm the start sequence alternates between A & B bank. When you trun one isolator off to force a fail over start the engine cranks and fails to starts most of the time. It happens on both A&B banks, see results from today. Bbank isolated: Starts on A - engine startsStarts on B - failed as isolated - Fail to start on AStarts on A - engine startsStarts on B - failed as isolated - started on AStarts on A - engine startsStarts on A - engine starts ( did not reset alarm, hence starting on A agian )Starts on B - Failed as isolated - failed to start on A A bank isolated: Starts on A - failed as isolated - Started on BStarts on B - engine startsStarts on A - failed as isolated - failed to start on BStarts on B - engine startsStarts on A - failed as isolated - failed to start on BStarts on B - engine starts. Information veiwed and taken from ComAp controller. Please see DiaSys recoding taken at the time. Please advise what steps need to be taken next. We tested voltage drop at startes, both did not drop below 13.5 volts while cranking. Resolution IAW with attached technician report.Start wiring incorrect or change ECU parameter to internal start

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