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SMT3000RM2U AVR Relay Fault- info on relays? | Smart-UPS & Symmetra LX / RM

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SMT3000RM2U AVR Relay Fault- info on relays?

Discussion in Smart-UPS & Symmetra LX / RM started by Charles , 22 days ago
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SMT3000RM2U AVR Relay Fault- info on relays?

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  • chucke

    Hi everyone, I have an old SMT3000RM2U that I would like to keep running if possible. Last night it shut off power to all outlets and recorded a "Critical - UPS: An automatic voltage regulator (AVR) relay fault exists." error. I know that APC doesn't recommend replacing parts like this, but if someone who is familiar with the specific relays that need to be replaced in the AVR circuit I would greatly appreciate the specific relays to purchase. I would much prefer to replace this unit, but due to its remote location, it would be difficult to get a new unit there. Thank you very much!

  • s.v.s

    Hi Charles,

    Before considering a UPS replacement, I recommend performing a logic reset (braindead), to try and recover the UPS - UPS units can log AVR events due to input conditions too, so the AVR alert doesn't necessarily indicate a hardware issue.


  • chucke

    Hi  Szabi , Thank you for your reply. Unfortunately, I'm not physically at the UPS so a logic reset is not possible. I don't see that kind of reset available via the network card. Due to the age of the unit, I think it's safe to assume failing relays. Since this unit is located remotely, taking the necessary relays with me when I return in a few weeks would give me a (big) head start on the repair. The best option I can figure out so far is https://www.digikey.com/products/en/relays/power-relays-over-2-amps/188?k=&pkeyword=&sv=0&pv72=12&sf=1&FV=1140050%2C16040014%2Cffe000bc%2Cffec12ea&quantity=&ColumnSort=0&page=1&stock=1&pageSize=100

    What do you think?

  • s.v.s

    Hi Charles,

    APC does not do any type of repair on these generally because we usually replace the UPS for this issue if it was in warranty and if the alert couldn't be cleared by a logic reset. 

    Thus, I am not sure how to repair it or what the appropriate replacement relays would be - from the APC side, my recommendation would be to replace the unit if the braindead doesn't help, as we do not have information on repairing these. 

    Not sure if anyone else has any other information they'd like to provide on what they've done on their own.

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