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TROUBLESHOOTING
Problem
Possible Cause
Solution
Warning
O/P Overload
Your equipment requires more power than the
UPS can provide. If the UPS is in Line Mode
then it will transfer to Bypass Mode; if the UPS is
in Battery Mode it will shut down.
Shut off non-essential equipment. If this solves
the overload problem, the UPS will transfer to
normal operation.
Load Over XXX%
Your equipment requires more power than the
setting in the Middle Atlantic Power Manager
Software will allow.
Shut off the non-essential equipment or increase
the level in the Power Management Software.
Battery Mode
UPS is operating on battery power.
Save your data and perform a controlled-
shutdown.
Battery Low
UPS is operating on battery power and will be
shutting down soon due to extremely low battery
voltage.
UPS will restart automatically when acceptable
utility power returns.
BAT Disconnected
Missing battery power.
Check battery connector and battery breaker.
Battery Failure
UPS has failed a Battery Test.
1. Check battery connector and battery breaker.
2.
Contact technical support at
1-800-266-7225 for more information about
Middle Atlantic Product’s Battery
Replacement Program.
Replace Battery
Battery will soon need to be replaced due to
insufficient runtime.
Contact technical support at 1-800-266-7225 for
more information about Middle Atlantic Product’s
Battery Replacement Program.
EPO OFF
Missing the EPO connection.
Check the EPO connection.
Wiring Fault
Line and neutral wires are reversed.
Have a qualified electrician exchange line and
neutral wires.
Missing ground wire.
Have a qualified electrician connect a ground
wire.
No ground wire.
Disable Wiring Fault alarm on LCD panel.
Line Abnormal
Wrong utility power backed up during UPS auto-
restart.
Check whether voltage or frequency of utility
power is out of range.
Output Short
Output short circuit.
Your attached equipment may have problems,
please remove them and check again.
Over Temperature
High temperature sensor activates protection.
Check the fan for operation and if the ventilation
hole has been covered.
Coldstart Lock
UPS is locked to prevent consuming battery
power during shipping.
Plug into utility power for first-time operation.
Autorestart Lock
“Automatic Restore” is disabled in Middle
Atlantic Power Manager Software
Press “ON/OFF“ button to turn on UPS
Fault
Over Charge
Battery is overcharged.
1. Remove battery connector and check
charger voltage.
2. Contact
Middle Atlantic Products technical
support team to schedule a repair.
Charger Failure
Charger has failed.
High O/P V
Output voltage is too high.
1. Shut down UPS and turn off input breaker.
2. Contact
Middle Atlantic Products technical
support team to schedule a repair.
Low O/P V
Output voltage is too low.
Bus Fault
Internal DC bus voltage is too high or too low.
Fan Error
Internal Fan has failed.
