MGE UPS Systems GES-302L Troubleshooting, Always “On” UPS Systems Inc, Problems, Possible causes

Always “On” UPS Systems Inc.

Troubleshooting

Please follow the guidelines below for solutions to common problems:

Check UPS input plug and wiring.

Check UPS input voltage.

Please prepare the information as follows for service personnel:

UPS model number and serial number

Description of problem(s) in detail.

General Problems

Problems	Possible causes
UPS has no reaction	Fuse/Breaker at back panel open
	No AC input
while AC power is
	UPS fault
connected
	Battery failure
UPS no reaction while	Breaker at back panel blown
AC power is connected,
yet starts after pushing	No AC input
	UPS AC detecting circuit fail
power on/off switch
UPS goes into back-up	Utility voltage or frequency
mode while connected to	abnormal
AC power	UPS AC detecting circuit failure
	Inverter fault.
	Over temperature
Fault LED lit	Battery over voltage.
	DC bus fault.
	Overload fault.
Battery can not provide	Battery deteriorated
normal back-up power in	Batteries not fully charged
the event of a blackout	Battery charger damaged
After AC connected to
UPS, alarm sounds short	Abnormal utility power
and fast beeps and UPS
shuts down

Solution

Replace Fuse/Switch breaker on Check AC power

Call for service

Call service center to replace batteries

Switch breaker

Check AC power

Call for service

Check AC power

Call for service

Call for service

Check load situation

Charge batteries and reset

If that doesn’t work call for service

Check input power

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