16 R eference & Installation Manual
system is running on the battery. In some cases adding an
external power supply may correct the situation.
1. Fro m Norma l Mode pr e ss an d h o ld th e [0] key.
2. E nt er the [INSTALLER CODE] (by default 000000).
3. P re ss [ACC].
The voltage may drop during the control panel battery
test.