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You will have very little benefit from a schedule.
All UPS are structured similarly.
A rectifier, an inverter.
A battery charger, a bypass ...

Powerware 9120... | Answered on Jan 26, 2015

Difficult to answer with so little information.
But the batteries are first suspected ...

Powerware 9120... | Answered on Jan 26, 2015

Open cell in the battery.
The batteries need to be replaced, or at least the most bad battery!

Powerware 9120... | Answered on Jan 26, 2015

Replace the fan ...

Powerware 9120... | Answered on Jan 23, 2015

You need special software, which costs money ...

Powerware... | Answered on Jan 23, 2015

I had a DC bus fault error displayed.

So I unplugged battery, then turned on UPS. It said Batt disconnected of course.

So when I plugged in the batt while the UPS was on, and held the power button for a few sec, the UPS displayed Batt testing.

After a few moments it was back online and had no faults!

Worth a shot.

Powerware 9120... | Answered on Nov 04, 2014

Check the connections on the batteries. One or more may be loose or corroded. Also check the fuse for the batteries. It may have blown.

Powerware 9120... | Answered on Sep 29, 2014

When you are sure you have a good battery and the voltage regulator works fine, I should think there is something eating power during the time you switched off. Years and years ago sometime a car radio was connected wrong and would not switch off when the contact was off. Now you should disconnect the battery when you switched of and use a huge ampere meter DC to see if and if so what current is "leaking" away If there is no current, then check the barrery and the voltage regulator.

Powerware... | Answered on Sep 23, 2014

Be more specific. Exactly what do you see?

Powerware 9120... | Answered on Sep 11, 2014

M-PW9120 6000i protection diode is damage when we connect the ups with main source otherwise backup is ok only protetion diode is damage

Powerware 9120... | Answered on Aug 29, 2014

Hi Anonymous,
I want to help you with your question, but I need more information from you. Are the batteries new? If you did recently replace the batteries in the cartridge, did you check the connections and make sure contact as being made?

Let me know!

Daniel • [email protected] • Power & Systems Innovations • 800.260.2259 • www.psihq.com

Powerware 9120... | Answered on Aug 25, 2014

A weak or dead battery pack its the main reason of a unresponsive/good health UPS, but never forget to test the electric cord, the fuse and the protective relay.first, this sounds too simple, but thats a common fault.

Battery pack must have at least 5 volts with half amp of current to power up the UPS internal relays, giving electric power to the main switch.

To rise the 12/24 DC volts to 115/120 AC volts, the UPS uses some electronic components (semiconductors) called MOSFETS , and sometimes, blown (browned) MOSFETS on the electric board are the most desastrous cause of a unresponsive (completely dead) or faulty UPS. (I remember that some time ago I see a TRIPP LITE SMART 1500LCD UPS with twelve blown MOSFETS, when happened, that kind of fault must be saw like a little volcano!).

If you know how to take all the safety electric measures, and how to use a portable voltmeter, you can test the voltage/amperage on the battery pack, the electric cord and the replaceable fuse (if has any). Basic and intermediate electronic knowledge is necessary to test MOSFETS and other electronic components on the circuit board.

Powerware 9120... | Answered on Aug 13, 2014

If your batteries are ok a DC BUS fault and low o/p voltage means one of the componants inside is defective. An end user can not effect repair. You need to have it looked at.

Powerware 9120... | Answered on Jul 18, 2014


Powerware 9120... | Answered on Jul 08, 2014

A Bosch 70745 is a cordless tool; the battery recharges with a power pack, or a plug in charging station. This is not a UPS Battery Backup system.

Powerware... | Answered on Jun 27, 2014

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