Eaton Logo

What does it mean when a N2LPS emergency exit sign pilot light is blinking 3 times then off and 3 times and off and so on?

The LED blinking three times indicates there is a failure in charging the battery or a failure in the AC/DC transfer function. To help determine which case is causing the 3 blinks, the troubleshooting guidelines are as follows:

• The first step is to check the battery voltage after a 72 hour charging cycle. If the battery level is at or above the nominal value (13 V), then the charging circuit and battery are o.k. and the fault must be in the AC/DC transfer function.

• If the battery level is below 13V, then the fault can be considered the battery in that it will not retain a charge (replace battery).