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Online Emergency Lighting Inverter Maintenance Manual
TroubleShooting
Problem Possible Reasons Solutions
Doesn’t operate after pressing
ON/OFF switches. No lights on,
no warning sounds.
Input power source not availa-
ble. Main input circuit breaker
open.
Check the input power.
Check Emergency Lighting Inverter System input
circuit breaker is “ON”.
Time of pressing the “ON” but-
ton may be too short.
Keep pressing “ON” button for 1 second.
Output short circuit or overload
on Emergency Lighting Invert-
er System.
Turn off Emergency Lighting Inverter System, take
off all load to make sure there are no problems on it
or any internal short circuits.
Fault light is on. The alarm
keeps beeping.
Emergency Lighting Inverter
System is broken.
Contact DSPM Inc. for service or help.
Alarm keeps beeping. Unit is overloaded. Reduce some of the load.
Utility indicating light is blinking.
The voltage of utility is exceed-
ing Emergency Lighting Invert-
er input range.
Verify input voltage.
Available time of batteries is too
short.
Batteries haven’t been
charged.
Keep Emergency Lighting Inverter System “ON” for
over 20 hours to recharge the batteries.
Emergency Lighting Inverter
System is overloaded.
Batteries are aged and need to
be replaced.
The charger is out of order.
Battery’s light is on when the
power is supplied by utility.
The voltage of batteries is too
low or batteries haven’t been
connected.
Check out batteries part of the Emergency Lighting
Inverter System, make sure they are well connect-
ed. If there is any damage to batteries, contact
DSPM immediately.
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