E-12: CAN Communication Error Alarm

• Verify that all cables are connected securely and that the Color Change and Booth Control power LEDs turn on. 
  • If the power LED does not turn on, the problem is probably caused by a bad connection. 
  • The nut on the connector must make at least 5 complete turns to ensure a good connection. 
  • If the power LED still does not light, the cable or board is bad.
• Check the color change board DIP switch settings. See the Installation manual.
• Check the fluid plate board DIP switch setting. An incorrect setting will not cause E-12 alarms, but a correct setting will help prevent E-12 caused by electrical noise. See the Installation manual.
• Check EasyKey software version (displayed at power up for all versions and when the lock key is pressed for version 2.02.000 and above). 
  • If older than 1.06.002, upgrade. 
  • Be sure to save settings through BWI or AWI before upgrading, as they will be erased.
• The sticker on the color change board shows the software part number and version, for example 15T270 1.01. 
  • If the version is older than 1.01, replace the board.
• If all software versions and DIP switch settings are correct and you still have E-12 alarms, then the system has a bad connection, bad cable, or bad circuit board. 
  • Use a multimeter on the CAN connectors to test whether there is a good connection between systems. 
  • If there is, you have a bad circuit board. 
  • If there is not, you have a bad connector, connection, or cable.
• Appears on the EasyKey display if the unit is programmed for Manual Mode, and a booth control is not connected.
• The dip switch settings on the Color Change Module were changed (see manual 312787) while the power was on. 
  • Cycle the power to clear the alarm.
• The dip switch configuration on the Color Change Control Module (see manual 312787) is setup incorrectly.

Verify condition of fuse and replace if necessary. See Repair-Parts manual.

Verify that the cable is correctly connected.