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Overview: Time needed to charge a 12 volt back up battery connected to a D4112 Issue   How long does it take to charge a back up battery connected to the panel for the first time?   Solution   It may take as long as 12 hours. BOSCH recommends that the battery be charged prior to the installation. ... View more

Overview: Power up charging status of the battey on a D4112 panel will send a trouble Zn 9 during Recharge cycle. Issue Why does the panel send a Trouble Zn 9 when the battery is charging?   Solution   After the AC is restored the battery will begin to charge.  When the battery reaches a charging level of 11.1 volts, and maintains battery voltage level above 10.3 volts for 1 minute, the panel will RESET and a battery trouble (Trouble Zn 9) will be sent to the Central Station.  When the battery reaches the charging level of 12.5 volts a Restoral Zn 9 is sent to the Central Station.     ... View more

Issue Will the D7112 support a daily 12:00 AM timer test ? Solution Not recommended. If the daily test timer is set for midnight ( 12:00 A.M. ) the panel stops reporting the daily test on January 1st. ... View more

Issue When do the D7112 Transmitters send a Low Battery Report? Solution For the Transmitters that use the 3.6V Lithium battery (D7121, D7122, D7130, D7131, D7198, and D7199), the low battery threshold is 3.4V.   For the transmitters that use the 9V Alkaline battery (D7190, D7191), the low battery threshold is 7.2V. ... View more