Multiquip

SCR SYSTEM MALFUNCTION

UnclassifiedEmissions

What This Code Means

Emergency shutdown; DEF Symbol is ON; DEF Symbol is Slow Blinking; Pre-Alarm Lamp is ON; Warning issued before situation becomes critical; DEF Symbol is Fast Blinking; Shutdown Lamp is ON; Intermittent operation; DEF Symbol ON; DEF Symbol Slow Blinking; Pre-Alarm Lamp ON; DEF Symbol Fast Blinking; Shutdown Lamp ON

Possible Causes

  • •Disconnection of sensors
  • •No supply of DEF
  • •Use of poor quality DEF
  • •Problems with DEF dosing
  • •Warnings ignored
  • •Poor quality DEF
  • •Improper usage of SCR system

Suggested Actions

  1. 1Supply proper quality DEF
  2. 2Resolve DEF dosing problems
  3. 3Reconnect disconnected sensors
  4. 4Replace the DEF filter (located in the urea SCR system supply module) every 3,000 hours of operation
  5. 5Perform inspection and repair promptly
  6. 6Enter ESCAPE MODE to restart the unit (may require as much as 30 minutes to restart) if emergency protective measures are necessary
  7. 7Perform inspection and repair
  8. 8Replace the DEF filter every 3,000 hours of operation
  9. 9Perform prompt inspection and repair
  10. 10Enter ESCAPE MODE if emergency protective measures are necessary (unit may require up to 30 minutes to restart)

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SCR SYSTEM MALFUNCTION SDSCR TROUBLE-PURGE PROHIBITEDSCR SYS ERRSERVICE DPF (SOOT ONLY)SCR FORCED PURGE REQSOOT LEVEL HIGH!P2211SOOT LEVEL VERY HIGH!P2207SPN 10504 FMI 12NEED MAN REGENSPN 10540 FMI 12
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