48V is out of range (47.0V)

[HamRadio]

Hey Guys,

I've been getting this error message in the logs on one of my switches. Is this something I should be worried about, or do something? What does this actually mean?


Dec 11 09:35:31 switch[1105]: 48V is out of range (47.0V)
Dec 11 09:37:19 switch[1105]: 48V is out of range (47.0V)
Dec 11 09:38:25 switch[1105]: 48V is out of range (47.0V)
Dec 11 09:56:51 switch[1105]: 48V is out of range (47.0V)
Dec 11 10:10:57 switch[1105]: 48V is out of range (47.0V)
Dec 11 10:19:23 switch[1105]: 48V is out of range (47.0V)
Dec 11 10:37:48 switch[1105]: 48V is out of range (47.0V)
Dec 11 12:18:25 switch[1105]: 48V is out of range (47.0V)
Dec 11 12:43:18 switch[1105]: 48V is out of range (47.0V)
Dec 11 13:28:30 switch[1105]: 48V is out of range (47.0V)
Dec 11 13:56:40 switch[1105]: 48V is out of range (47.0V)
Dec 11 14:12:05 switch[1105]: 48V is out of range (47.0V)
Dec 11 17:02:00 switch[1105]: 48V is out of range (47.0V)
Dec 11 17:54:56 switch[1105]: 48V is out of range (47.0V)
Dec 11 18:20:58 switch[1105]: 48V is out of range (47.0V)

[physcon]

I have a WS-12-250-AC which has been giving this exact message for years now but it hasn't given us any trouble. I'm not actually sure how long its been showing this error, but the switch is probably 5 or 6 years old at this point. PoE load is about 50 - 60 watts. This particular switch is indoors and the fan is still working too.

[Julian]

that.. can be a few things, since it's been years, my money's on trim pot drift or dust bunnies;

internally, past the warranty label and sliding the lid away from the ports over the two rearmost bottom case screws, there exists a blue potentiometer on the left side of the power supply unit-- one adjusts counterclockwise to increase supply voltage and widdershins to decrease