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Kohler 12RES / 8.5RES — Resetting Controller after a Fault Shutdown

Testing & diagnosis · ADC 2100 controller

For the Kohler 12RES / 8.5RES, from the Kohler owner's manual.

Applies to: Kohler 12RES, Kohler 8.5RES, Kohler CH20 engine, Kohler CH 740 engine

Before you start

  • Always identify and correct fault cause before resetting controller

Procedure

  1. Move master switch to OFF/RESET
  2. Disconnect generator set from load using line circuit breaker or ATS
  3. Identify and correct the cause of the fault shutdown
  4. Start generator set by moving switch to RUN; test operate to verify shutdown cause corrected
  5. Move master switch to OFF/RESET
  6. Reconnect generator set to load using line circuit breaker or ATS
  7. Move master switch to AUTO position for remote transfer switch or remote start/stop startup

Full service-parts list: Kohler 12RES →, Kohler 8.5RES →

Source: Kohler owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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