Problem.
Fitted a new power supply and now the panel is saying both master alarms are open circuit even with the end of lines in the panel.
Possible solution.
power supply jumpers J7,8&9 has not be correctly set up for either BS or EN which ever is required.
EN: short pins
P7 = 3,2 (left)
P8 = 3,2 (left)
P9 = 1,2 (top)
BS: short pins
P7 = 2,1 (right)
P8 = 2,1 (right)
P9 = 2,3 (bottem)