How to Determine D4112 Low Battery and Charging Values

Issue

Why does the panel send a Trouble Zn 9 when the battery is charging?

 

 

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.