Ttp22: Keypad Shows Service Zonex; Ttp23: Control Panel Sends Pt Bus Trouble Reports To The Central Station; Ttp24: All Points On A Point Expansion Technology Show Shorted - Bosch D9412GV2 Troubleshooting Manual

D9412GV2/D7412GV2 | Troubleshooting Guide | 3.0

TTP22: Keypad Shows SERVICE ZONEX

Description
If the data expansion bus becomes shorted, all
POPITs send a shorted condition report and the
control panel generates a Pt Bus Trouble event.
When the data expansion bus restores from the
shorted condition, the control panel generates a Pt Bus
Restore event. If there are POPITs connected to the
expansion bus without a Point Index assigned to them,
the control panel generates an Extra Point event.
If the negative side of the expansion bus becomes
shorted to common, the control panel views all
POPITs as missing. If the positive side of the
expansion bus becomes shorted to common, the
control panel views all POPITs as shorted. Also, the
control panel generates a Pt Bus Trouble event.
If Terminal 28 is shorted to common, the control
panel does not generate a Pt Bus Trouble event. A
short between Terminal 27 and common causes the
control panel to generate a Pt Bus Trouble event, and
the keypad shows SERVC ZONEX 1. If Terminal 27
and Terminal 28 are shorted together, the control
panel generates a Pt Bus Trouble event and the
keypad shows SERVC ZONEX 1.
If Terminal 26 is shorted to common, the control
panel does not generate a Pt Bus Trouble event. A
short between Terminal 25 and common, however,
causes the control panel to generate a Pt Bus Trouble
event, and the keypad shows SERVC ZONEX 2. If
Terminal 25 and Terminal 26 are shorted together, the
control panel generates a Pt Bus Trouble event and
the keypad shows SERVC ZONEX 2.
Procedure
Refer to TTP46 Shorted Wiring
62
on page 98.
Troubleshooting
TTP23: Control Panel Sends PT BUS
TROUBLE Reports to the Central
Station
Description
Erroneous alarm or trouble reports might follow the
PT BUS TROUBLE report.
Procedure
For a detailed description of this symptom, refer to
TTP22 Keypad Shows SERVICE
TTP24: All Points On a Point Expansion
Technology Show Shorted
Procedure
For a detailed description of this symptom, refer to
TTP22 Keypad Shows SERVICE
Bosch Security Systems, Inc. | 11/05 | F01U011024B
ZONEX.
ZONEX.