APC AP8953 PDUs - Not Reading Input Voltage - Safe?
Posted by G4L3A@reddit | sysadmin | View on Reddit | 3 comments
Hi all,
I picked up 3 APC AP8953 PDUs off eBay about 6 months ago. All 3 PDUs are working but none of them are reading input voltage from mains or how many KWs the PDU is drawing. There is a reporting communications issue when access the GUI for the PDU.
After doing a bit of research whilst trying to troubleshoot the issue, it was suggested that replacing the Display Interface Unit (panel which has the screen, network + console interfaces etc) would resolve the issue. I managed to find replacements on eBay but, after installing the replacement DIU, the issue is still ongoing.
My question to all of you is, are these PDUs still safe to use despite the units not reading input voltage and the number of KWs being drawn? Is it a fire hazard? Should I cut my losses and simply find new PDUs to use instead.
hasthisusernamegone@reddit
What is your peace of mind worth? Are you always going to be thinking "I wonder if they've burned everything down" while you're not there?
The fact you're talking about user-servicing items bought on eBay makes me think this is more likely to be a homelab thing, at which point I'd be erring on the side of getting them out of my house asap. That's a me thing though. I don't take risks when mains electricity is concerned.
What is your appetite for risk?
mountain_bound@reddit
Did you get into this specific model and serial number table for incompatible displays? I was thinking that the ebay versions could have also been NMC3 and you need to find another legacy display.
Although the symptoms you describe are different I enjoyed looking into it as I'm an unemployed IT professional with ADHD and trying to avoid some real productivity.
https://www.se.com/us/en/download/document/TME34266/
If the serial number of your PDU is lower than the serial number in column two, install the legacy NMC2 display module. If the serial number of your PDU is greater than or equal to the serial number in column two, install the NMC3 display module.
sryan2k1@reddit
Yes. There are two computers in them. The comms/display board and the actual measurement controller. It's very common for the latter to die. That's the comms error, it can't talk to the board with the sensors on it.