pLAN is the communication wire between unit 1 and unit 2 controller board. The units will act independently when the communication is lost.
|Possible Cause||Component to Check||Recommended Action|
|Single unit configuration||SYS under E menu||Change setting from 2 to 1|
|Loose connector||pLAN connector on J6 block at each controller board||Push in connector|
|Incorrect Controller Address||CAD under E menu. CAD must be 1 for unit 1 and 2 for unit 2||Correct setting. Move the display connector (J7) to unit 2 to configure unit 2 address|
|Controller board failure/power loss||24VDC on across J1|
Power supply LED light between J8 and J9 should be lit
|Secure power input connector.|
Replace controller board is power is present but controller board does not power on. Refer to the Controller board LED status chart below.
Controller board LED status
Power Supply LED (Yellow)
Indicates power supply to the module
Cannot identify other unit through pLAN: Loose pLAN connection OR wrong controller address
Software error: No pLAN address set
Module operating correctly with pLAN