SURT3000XLI FAULT

[dario_ramos_apc]

I have one UPS that stopped and the LEDs on front panel flashes like this:
*= RED LED FAULT + GREEN BATTERY LEDs 3 AND 4 (counting from bottom to up) =*

Is there someone who knows to translate this code to something understandable?

Thanks in advance

[Anonymous user]

Hi Dario,

That indicates a Battery Capacitor Soft Start Fault.

Do you have the serial number of the unit, by any chance?

[dario_ramos_apc]

Thanks juangele for your help.
Yes, it makes sense!
Probably because of capacitor soft start failure the control doesn't close batteries input relay.
The damage was done by lightning. After that it becomes completely dead. Now it became back to life and is taking the first steps. It has no power components off. So, I think I have a reasonable chance of being successful.

Serial Number is: NS0752004030

[Anonymous user]

Hi Dario,

Did you do some special troubleshooting with the UPS? Good to know that its back to work now! 🙂

Should you have any further question, don't hesitate to ask. Thank you for using APC Discussion Forum! Have a great weekend!

[Anonymous user · Accepted solution]

Hi Juangele,

I have 2 SURT3000XLI UPS with the same problem, when I coldstart, Relay operates and quickly deoperates, after this the X fault led lights on and only 3rd and 5th battery stay on (From the top), or 1st and 3rd are On (from the bottom) look at this please:

0
0
1
0
1

Can the problem be the Capacitor ? Relay ? Can you help with a pic ?

Thanks