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My APC inverter shows fault all of a sudden and is difficult to turn it off.

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2 Answers

Apc smart ups rt 10000 internal fault, what to look for?


you should check the inverter and the charger boards as well.
Mainly IGBTs and drivers (IGBT drivers).
better locate the fault and replace the defective board

Aug 21, 2014 | APC Smart-UPS RT 10000VA - UPS ( external...

1 Answer

Apc inverter fault


You give little information, can you tell us more?

Presumably, the inverter shorted.

May 02, 2014 | Computers & Internet

1 Answer

Numeric inverter battery low


you have to replace your inverter battery. also numeric is waste brand in ups and inverters. go for apc brand for inverters and ups. their battery will last nearly 3 to 4 years in perfect condition.

Apr 11, 2013 | Computers & Internet

1 Answer

UPS SURTD5000XLIQ is being powered but indicating red Led fault , What may be the cause ?


it is cause by UPS internal fault, possibilities like faulty charging circuit, inverter, etc.. you can call APC and check if its still have warranty, APC will replace it right away :D

Dec 27, 2012 | APC Smart-UPS RT 5000VA (SURTD5000XLI) UPS...

1 Answer

Inverter fault


This unit will require you to Brain dead the whole UPS.
To see if it is actually a condition that exists with the hardware or if it was just a lock condition.
Steps:
1)Power down unit completely
2)Unplug all batteries
3)Unplug from wall

4)Leave unplugged for about 5 minutes or so WITH NO POWER AT ALL.

5)Plug batteries back in
6)Plug back into wall
7) Turn unit back on

Log into console of UPS and see if the condition returns.
If it does not return your good to go.

If the error returns. You have to replace the WHOLE battery pack.

APC has told me their units are typically good for 4-6 years, after that their units cannot hold the same tolerances as they did when they were brand new.

Hope this helps.

Oct 30, 2012 | APC SURT8000XLT-1TF3 Smart-UPS RT 8000VA -...

1 Answer

Apc unit is shuting itself down whenever PC unit is turned on, and then its alarm gets stuc. Also, sometimes it shuts down whenever another electrical appliance in the room is turned on. (Like a TV)


Batteries in the UPS typically last 3 to 5 years and it depends upon several factors. including the number of times the unit must go on battery power and environmental conditions. There are usually several batteries in the UPS and while the battery voltage may show 13 volts, this may only be a float charge/voltage and a true indication of the battery voltage and condition requires the batteries to be tested under a load. There maybe one battery in a set of batteries that is faulty and causes the whole battery system to fail and indicate a battery fault.

These lower powered and cheaper KVA type UPS are switch over types, when the mains supply fail, the UPS switches over to the inverter in milli-seconds which then supplies mains power but the power waveform is a pseudo sine wave (ie not a true sinewave. A faulty inverter circuit won’t deliver power when the mains supply fails.

Oct 24, 2009 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

1 Answer

Overload light in APC RS 800 UPS


it seems that the inverter circuit of your UPS is dying. the solution here is you have to open up the UPS and check the inverter circuit. to make easier, check the power mosfet if its leaking.

Jun 11, 2009 | APC (br800) UPS System

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