Pittway NOTIFIER AM2020 Troubleshooting Manual page 34

T10 Ground (Earth) Fault
Detected in Wiring or
System.
T11 Ground (Earth) Fault
Detected in Wiring or
System.
T12 Ground (Earth) Fault
Detected in Wiring or
System.
T13 Standby Battery(s)
not Connected or Defec-
tive.
T14 MPS-24 Monitor
Cable Disconnected.
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with the trouble cable. If yes, see below.
2) Confirm that AC power is present at the AVPS-24 and the circuit breaker is
not tripped.
3) Make sure that the AVPS-24 has battery power.
4) Replace the AVPS-24.
5) If the trouble does not clear, call Notifier Technical Support.
This specific Trouble Code is generated when an earth fault is detected on the
system common. See Ground Fault in Section 2: AM2020/AFP1010 Hardware.
This specific Trouble Code is generated when an earth fault is detected on the
power supply positive. See Ground Fault in Section 2: AM2020/AFP1010
Hardware.
This specific Trouble Code is generated when an earth fault is detected on the
field wiring positive. See Ground Fault in Section 2: AM2020/AFP1010 Hard-
ware.
This trouble will occur if the standby batteries have been disconnected. This
trouble will also be generated if the batteries have become severely over or
under charged. If this is the case, the likely causes are either defective batteries
or a defective battery charger.
There is a problem with the supervisory ribbon cable that runs between the CPU
and the MPS Main Power Supply.
Corrective Action:
1) Check to make sure that the ten-conductor ribbon cable (part number 71031)
is connected between the MPS-24A (Plug P3) and the CPU (Plug P2).
Revised
MPS-24A
Connection
Original
MPS-24A
Connection
Figure 5-1: Connecting the MPS-24 Monitor Cable
AM2020/AFP1010 Troubleshooting Guide 50432 Revision A 8/13/97
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