If an exit sign is not lighting up, treat it as a priority maintenance issue. A dark or unreliable exit sign may fail inspection and can reduce visibility during an emergency.
Common reasons
- No normal power at the fixture
- Switched circuit or tripped breaker
- Dead backup battery
- Failed LED board or lamp
- Loose wiring or damaged charger
- Old or damaged fixture
Check normal power first
Confirm the sign has power and is not connected to a switched outlet or circuit that can be turned off. Electrical troubleshooting should be performed by qualified personnel.
Test battery backup
If the sign lights normally but fails during a test, the backup battery may be weak or dead. If the sign does not light at all, the issue may involve power, electronics, or fixture failure.
Repair or replace?
Replacement is often the better choice when the fixture is old, damaged, repeatedly failing, or uses parts that are hard to source. Modern LED exit signs are efficient and available with battery backup.
For planned replacement, compare exit signs and battery backup exit signs.
What to check first
A dark exit sign should be treated as a maintenance issue until a qualified person confirms the cause. Start with a visual inspection: confirm normal power, look for damage, check the test button if available, and note whether the fixture fails constantly or only during battery operation. Do not ignore recurring failures, because the fixture may be needed during an actual outage.
Common next steps
- Record the location, model, and symptom before work begins.
- Check whether the battery is old, disconnected, swollen, leaking, or unable to hold charge.
- Inspect lamp heads, charging indicators, housing damage, and wiring concerns.
- Use qualified personnel for electrical diagnosis, replacement, or rewiring.
- Update the maintenance log after repair, battery replacement, or fixture replacement.
If a fixture fails again after battery replacement or repair, replacing the complete unit may be more reliable than chasing repeated faults in an aging emergency system.
Related exit sign and emergency lighting guides
Continue with Exit Sign Inspection Checklist for Property Managers, Why Is My Exit Sign Beeping, Why Is My Emergency Light Not Working, Exit Sign Battery Test Button What It Does, or visit the Exit Sign & Emergency Lighting Learning Center.
When to escalate the issue
For an exit sign that is not lighting up, escalate the problem if the fixture fails a test, shows damage, repeats the same fault, or cannot be restored with normal maintenance. Emergency egress equipment should not be left in a questionable state while waiting for the next inspection cycle.
After repair, test the fixture again and write down what changed. A clear maintenance note helps the next technician understand whether the issue was a battery, lamp head, charger, wiring concern, or complete fixture failure.
Final check
Before closing the work order for an exit sign that is not lighting up, confirm the fixture still matches the intended path of travel, the maintenance team knows how to test it, and any product rating needed for the space is documented. For life-safety equipment, the right answer is the one that works in the field and can be verified during inspection.