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Transfer Switches - Eaton Cutler Hammer — Replace board if necessary.

For these Transfer Switches - Eaton Cutler Hammer models: IB ATS-G001, IB ATS-GO01.

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Procedure

  1. Step 8: Is the TDEN or LED illuminated?
  2. Step 9: Check the voltage from NT1 X4 to Terminal
  3. 23 onthe microprocessor logic connector P1.
  4. Step 10: Check the voltage from Terminal 20 to 24. Is

Source: manual:CUTLER HAMMER Westinghouse ATS 150_1000 Instructional Manual 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.