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Home›Repair guides›The following procedure applies only to those installa­

Generac — The following procedure applies only to those installa­

For these Generac models: 13/13 kW, 15/16/18 kW, 15A, 6/7 kW, 9/10 kW, GT-990.

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Procedure

  1. Check that the transfer switch main contacts are at
  2. Check that utility source voltage is available to transfer
  3. Set the generator AUTO-OFF-MANUAL switch to its
  4. Actuate the generator main line circuit breaker to its “On”
  5. completed, a dropout in utility supply voltage below a
  6. On the generator panel, set the AUTO-OFF-MANUAL
  7. On the generator, set the main line circuit breaker to it’s
  8. Turn OFF the power supply to the transfer switch, using
  9. Manually actuate the transfer switch main contacts to
  10. On the generator panel, set the AUTO-OFF-MANUAL
  11. Let the engine warm up and stabilize for a minute or two
  12. Set the generator main line circuit breaker to its “On” or

Source: manual:Generac Diagnostic Repair Manual 0G4338.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.