2806

UnclassifiedFuel

What This Code Means

ECU not running at commanded speed; ECU not operating on the commanded Fuel Type; Hardware Match Error; Shutdown alarms will be inhibited; Battery voltage is above 16.1Vdc; Battery voltage is less than 12.5 VDC after completing 26 hour charge cycle; AC input to battery charger missing for greater than 5 minutes during charging; Controller wrote to the EEPROM more than 500 times in less than 4 minutes; Config computed CRC unequal to stored EEPROM CRC; Generator Emergency Shutdown Switch button was pressed; AUX shutdown; Auxiliary shutdown or onboard rocker switch on Power Zone 410 front panel button was pressed and prompted a shutdown; Shutdown detected when pressed for greater than 300 ms; Common shutdown alarm indicator true for 1 second from one of the configured I/O Extender modules; Alarm detected on any digital input of connected IO Extender configured as General Alarm; NFPA20 Shutdown Inhibit is enabled and active; Shutdown alarms will be inhibited per NFPA20 requirement

Possible Causes

  • Speed Command Mismatch
  • Fuel Command Mismatch
  • SPN/FMI not supported by Genset Controller
  • Shutdown Inhibit is enabled and active
  • Charging system issue
  • AC power loss to charger
  • EEPROM abuse
  • EEPROM CRC mismatch
  • Emergency Stop button activation
  • AUX shutdown activation
  • Auxiliary shutdown switch activation
  • Power Zone 410 front panel button press
  • External I/O Extender alarm
  • General Alarm on Digital Input of IO Extender
  • NFPA20 Shutdown Inhibit enabled

Suggested Actions

  1. 1Disable feature
  2. 2Address charging system
  3. 3Test 120 Volt Input (T1) page 169
  4. 4Power cycle controller.
  5. 5If problem persists, replace controller
  6. 6Test 29 – Emergency Stop Relay (ESR) Test page 75
  7. 7Reset Aux shutdown switch
  8. 8Review alarm log and address active alarms.

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 2806 on your specific Generac unit — cited to the OEM manual, not a forum guess.

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