UPS faulted. There was no alarm, Fault/Overload light is blinking. I pressed the reset and the ON/Off, no response. Will a new battery solve the problem? or will I need to replace the entire unit?

Is red light on for overload or for battery?
If on overload, try reducing the load on the UPS. If red light on overload persists buy a new UPS (overload fault hard to repair).

Red light on battery - replace the batteries.

Red light on boost or buck, may mean that the nominal voltage of ups and the limits need to be changed/corrected.

press the reset button on the ups

1. Four beeps every 30seconds (On Battery LED will be illuminated)
This alarm indicates that the Battery PowerSupplied outlets are now supplying battery power as opposed to power from theutility. If the UPS determines that the input utility power is unsafe for yourcomputer equipment, the UPS will switch to battery power.
Note: Ifthe power disturbance is brief, you may only hear one or two beeps.

2. Continuous Beeping (On Battery LED will beilluminated)
This alarm indicates that a Low Batterycondition has been reached and that the UPS will soon shutdown. Once the UPStransfers to On Battery operation, it can only stay on battery for a limitedamount of time. The UPS will sound this alarm about two minutes before thebatteries are totally exhausted. Once exhausted, the UPS will shutdown and turnoff its output power to your equipment. If you hear this tone you shouldimmediately shutdown your computer to prevent data loss or corruption.

3. Continuous Beeps for 30 seconds (BackUPS OFFICE 250 and 280 ONLY)
This alarm indicates the unit has detected anOverload condition after it has performed a self-test during start-up.

4. Continuous Two-Tone Beep
This alarm indicates a severe Overload wasdetected while the unit was on-battery operation. This tone will continue tosound until the unit shuts down.

5. Continuous Tone (On Battery LED will beflashing)
This alarm indicates that the battery-poweredoutlets are overloaded.

6. Continuous Tone (On Line and On BatteryLEDs flashing) Back UPS OFFICE 350,400, and 500 ONLY
This alarm indicates that an internal UPS faulthas occurred.

No you don't have to reconfigure the UPS after battery replacement. However you may have to reset the battery Timer. There are 4 possible ways.
1. Press and hold the fault reset button for 3-5 seconds
2. Press and hold the fault reset and security key simultaneously for 3-5 seconds
3. Press an dhold the fault and alarm silence buttons simultaneously for 3-5 seconds
4. Cycle the logic Power. This means to remove power from the main processor.
5. Call MGE. They have the software to reset the battery replacement alarm

There are 4 possible ways to try and clear the battery timer alarm.

1. Press and hold the fault reset button for 3-5 seconds.

2. Press and hold the fault reset and security key simultaneously for 3-5 seconds.

3. Press and hold the fault and alarm silence buttons simultaneously for 3-5 seconds.

4. Cycle logic power
If this does not work you have to have the factory clear it. This is their way of making extra money.

Unplug the computer. Then run the UPS self-test and the unit will display whether it finds an overload fault, whether the battery needs to be charged or replaced.
Here are the instructions (copied from the User Manual):
Turn UPS on: Press and hold the ON/OFF button for one second.

Run a Self-Test: Press and hold the MUTE/TEST button for two seconds (until alarm beeps several times).

The test will last 10 seconds. All LCD Display icons will be illuminated and the alarm will sound.

If the fault icon remains lit, the battery-supplied outlets are overloaded. Unplug powered devices until you remove the overload.

If the "Replace" icon remains lit and alarm continues to sound, the UPS batteries need to be recharged or replaced. Allow UPS to charge for 24 hours and repeat self-test.

Try unplugging some equipment from the UPS. The total load should be less than 865 W. Printers and scanners often are culprits.Some gaming desktop computers can have a power supply that will be too much for this UPS. (I've found that even having the printer on the surge only part of the UPS can be a problem. I have the printer on a separate surge protector.)

Since the overload is new, did you add any equipment to the UPS recently or upgrade components?

If you reduce the load, and the problem continues, the UPS may have a fault in the circuitry. If it is under warranty, contact APC.

I hope this helps.

Cindy Wells
(I have replaced APC units after 3+ years when they can't properly recharge the battery - with a new battery. The symptoms are 1) getting a overload when a small load is on the UPS. Small load - desk lamp, 13" TV or 2) not keeping the item on when the power goes off.)

The "Overload" light and alarm is to tell you that the devices connected to the UPS are drawing more current than the UPS can safely provide with battery backup. You should disconnect a few items, and the alarm and overload light will turn off. The "Building wiring fault" light on the back is to tell you that there's no proper ground wire inside the wall outlet that you're using. These two problems are not related to each other.

change the battery and try

Internal fault.