Did the emergency exit lights work at all?
A light came on when the power was interrupted, right? If there was light, even for a moment, the battery and bulb must be connected properly. In this instance, the battery is possibly at blame since it either wasn't charged properly or can't retain a charge. Another approach to verify this is to see whether the green charge LED indication is lit up when the power is normal.
The battery itself has to be changed first. Batteries are intended to last for four years, however high and low temperature extremes as well as infrequent testing shorten their life. Before doing another test after switching to a new battery, you must fully charge it for 24 hours. Even then, some batteries need to go through multiple cycles of charging and discharging before they can last for three hours.
The PCB control gear is the next likely cause if, after replacing the battery, the issue persists or the green charge indication is not lighted. The battery is charged while the control equipment keeps track of the main incoming electricity. Although replacing this would be a bit trickier, it should still be achievable since most emergency lights are designed to be changed out in this manner.
Absolutely no light!
The first thing to check is the lamp or LEDs if there was no light when the power went off. I would advise replacing the emergency light, if it is still a fluorescent bulb, with an LED one. For many years, LED emergency lighting has been widely used. The cause would most likely be an outdated fluorescent light, particularly if the ends are black. Replace the light and give it another go if an upgrade to LED is not possible.
If the light source is an LED, it may typically be changed without any difficulty. If you do see any light during testing, you may then need to examine the battery or PCB as described above.
Please get in touch with us if you need help troubleshooting your emergency lights; I'm certain we can assist.
