NZ100 Installation Commissioning & Operation
Page 15
10.
TROUBLESHOOTING
Problem
Possible cause/s
Suggested remedy/ action
Mains LED is off
Mains supply is not operational.
AC Fuse on 302-665B or Mains
Fuse is blown.
Check mains supply.
Check and replace if necessary
F3 on 302-665B, and Mains
Fuse F4.
Bell circuits in defect.
Diodes not fitted in series with
bell.
End of line not fitted.
Fuse blown.
Fit diodes to bells as shown in
section 4.
Fit end of line resistor
Check fuse F1 on PCB.
Replace if necessary.
Zone always in defect.
Line is shorted.
Line is open.
End of line not fitted.
Check and remove short.
Check line and rectify.
Fit 6K8 resistor to end of line.
System fault light is on.
(Mains is on).
Brigade board is disconnected.
No brigade board.
Connect brigade board.
Make sure link is fitted to CN3,
pins 5 and 6.
Defect occurs when door is
closed.
Isolate or Test switches on
brigade board not in normal
position
Return switches to normal
position.
