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Why does my Smart-UPS 15k/20k indicate "Mains Not Available. Input Frq/Volt Out of Range"?


"Mains Not Available. Input Frq/Volt Out of Range"

Product Line:

Smart-UPS Online


All SURT15k/20k models, All Serial Numbers


"Mains Not Available. Input Frq/Volt Out of Range" indicates that there is an issue with the input frequency or voltage and the UPS is unable to operate online.


Check input voltages and frequency. Consult an electrician or your utility if power issues persist.

APC Bulgaria

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