5188

Possible Causes

• •Faulty auxiliary contact.
• •Mechanical failure of transfer switch. Feedback indicating as, it is neither at utility side nor at genset side OR feedback is indicating it is at genset as well as at utility side at the same time.
• •Transfer switch is either at genset side or utility side, but respective feedback is lost or both side feedbacks are available.
• •Transfer switch position is not known

Suggested Actions

1. 1Check and replace the auxiliary contact of transfer switch.
2. 2Check for loose connection of the feedback wire connected to TB1 − 12 from auxiliary contact of transfer switch. Tighten the same.
3. 3Check the transfer switch manual.

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