What causes the panel to display "MUX A Wire Fail or Fault"?
MUX WIRE FAIL or FAULT Check the following
1) Programming - is the buss wired Class A or Class B, Check that MUX BUS TYPE is set to the correct option.
Enter Program Mode
Press 0 - Enter Pin (Default is 9876)
Press 9 PROGRAM MUX
Press 3 BUS TYPE - Choose (1) for Class A - (2) Class B
2) Measure for a short across the MUX Buss. You should have 8 to 10 VDC on the both Buss A and B.
Part numbers FPD-7024, D7024, DS9400, DS9400I, DS9400M,DS9431, D7039, FPE-7039