Nibe VVM 320 - Alarm 70 - Perm. Com.error Input Card

Alarm 70 - perm. com.error input card
Is the wiring connector (W105)
correctly connected on input circuit
board (AA3-X2) and on the display
card (AA4-X8)?
YES
YES
Has the fault been corrected?
Replace the input circuit board
(AA3).
Replace the display card (AA4).
NO
Action.
NO
OK.
NIBE™ VVM 320Chapter 6 | Troubleshooting52