LED Fault Code - SURT10000XLI

[Marco-Hans_apc]

This was originally posted on APC forums on 3/30/2018

---

I am trying to fix an old UPS at a school. I expect the batteries need to be replaced; however, I don't see the replace batter light. Instead I see the Fault Code in the attached image. The Fault Code is 00101. What does this Fault Code mean ?

[BillP]

This reply was originally posted by Bill on APC forums on 4/2/2018

---

Hi,

The code indicates an output relay fault. If the unit is under warranty you should contact local support for assistance possible replacement. 

[chefash_apc · Accepted solution]

This was originally posted on APC forums on 4/5/2018

---

The 00101 light combination is the Output Relay fault.  Its actually not that bad of an error and can be repaired.  On the PFC board, you should find the output relays.  If you are lucky you will find one of the 4 relays are bad.  That area is pretty easy to work on.