2801
What This Code Means
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; Active Fault
Possible Causes
- •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
- •ECODE
Suggested Actions
- 1Address charging system
- 2Test 120 Volt Input (T1) page 169
- 3Power cycle controller.
- 4If problem persists, replace controller
- 5Test 29 – Emergency Stop Relay (ESR) Test page 75
- 6Reset Aux shutdown switch
- 7Review alarm log and address active alarms.
- 8View Fault Codes
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 2801 on your specific Generac unit — cited to the OEM manual, not a forum guess.
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