APC Smart UPS shows overload with no load attached
How do I deal with a Smart UPS 1000 that shows overload after self
test when no load is attached? The inverter sounds quite a bit louder than usual. This unit worked fine for a long time until it was unplugged for precisely 2 weeks and moved... |
APC Smart UPS shows overload with no load attached
wrote in message oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. This unit worked fine for a long time until it was unplugged for precisely 2 weeks and moved... Battery would be the first thought. Voltage under load? -- .. .. .. .. .. .. .. .. -- |
APC Smart UPS shows overload with no load attached
wrote in message
oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. This unit worked fine for a long time until it was unplugged for precisely 2 weeks and moved... Typical failures of APC UPS -- in order of frequency (based upon an APC refurbishment operation): 1. Battery 2. Charger circuit for battery 3. Inverter circuit from battery to outlets gb |
APC Smart UPS shows overload with no load attached
"w9gb" wrote in message . .. wrote in message oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. This unit worked fine for a long time until it was unplugged for precisely 2 weeks and moved... Typical failures of APC UPS -- in order of frequency (based upon an APC refurbishment operation): 1. Battery 2. Charger circuit for battery 3. Inverter circuit from battery to outlets gb I'm very interested in this. Are you directly involved with this refurbishment operation, to the point of knowing these units well ? I have a Smart-UPS 700. It seems to indicate that it thinks all is well when it is just idling, single computer on the end, one load light showing, centre "doing nothing" status light showing, but a few months ago, we had some power outages in the village where I live, and it failed to hold the power up, causing the computer attached to it to immediately reset. At this point, the battery level indicator had dropped to one light, and the red battery warning light was flashing, even though prior to the event, it had been showing full. I replaced the batteries anyway with a similar size and rating, and thought that all was well then, but it's not. When the unit does it's periodic self-check, it does a similar thing, and beeps furiously, although it continues to supply power. If you leave it long enough, it seems to recover from this, but the battery level LEDs are again then indicating a low and defective battery for a couple of hours. A few of days ago, we again had some brief power outages, and again, it failed. I'm not going to spend too much time on it without schematics, and to be honest, I have so much other repair work in at the moment that I would struggle to find the time, but if these symptoms ring any bells as to specifics for this make and model, I would be very interested to know. Thanks Arfa |
APC Smart UPS shows overload with no load attached
On Feb 19, 5:41 pm, Meat Plow wrote:
Or it got dropped during the move. I wish I could blame it on that, but the best I can offer there is that it may have caught some bad vibrations during the drive. I'll take it apart and reconnect everything next time I look at it. |
APC Smart UPS shows overload with no load attached
Arfa Daily wrote:
"w9gb" wrote... Typical failures of APC UPS -- in order of frequency (based upon an APC refurbishment operation): 1. Battery 2. Charger circuit for battery 3. Inverter circuit from battery to outlets I'm very interested in this. Are you directly involved with this refurbishment operation, to the point of knowing these units well ? I have a Smart-UPS 700. http://lists.ssc.com/pipermail/linux...ry/020196.html Someone gave me one a while back. I replaced the batteries with prime units from a local alarm company. Recently a cat caused a shutdown of power to the unit and it completely discharged. I restored power to it and it seemed okay, but over 24 hours later (and naturally at 0-dark-30) our natural-gas alarm went off. After the gas company cleared their stuff, I figured out the vapor was coming from the SmartUPS 700, which was pretty hot. I unplugged it and took it out of service. I have a nice, new 1000VA TrippLite from Costco and I feel much safer now. -- "Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." -- Bill Gates, in an interview with Newsweek's Steven Levy |
APC Smart UPS shows overload with no load attached
On Feb 19, 5:09 pm, "Homer J Simpson" wrote:
wrote in message oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. This unit worked fine for a long time until it was unplugged for precisely 2 weeks and moved... Battery would be the first thought. Voltage under load? Well, I disassembled (discharging the two large capacitors) and reassembled it, with no improvement. But I got it to work in a very strange fashion. So I'm trying to make sense out of this. The UPS does not complete self test when nothing is plugged into it. It lights the overload indicator only and a constant audible tone. If I plug a 40W lamp into it, it completes the self test and operates as usual. One more little tidbit of information is that I have 126V at my outlets, which triggers the overvoltage regulation in the unit after it passes the self test. Thoughts? I'm glad it seems to be working now at least. I just find it very odd that the way to cure the UPS sensing an overload is to plug a load into it, and thinking that maybe it has something to do with the high input voltage. |
APC Smart UPS shows overload with no load attached
"Arfa Daily" wrote in message
... "w9gb" wrote in message . .. wrote in message oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. I'm very interested in this. Are you directly involved with this refurbishment operation, to the point of knowing these units well ? I have a Smart-UPS 700. It seems to indicate that it thinks all is well when it is just idling, single computer on the end, one load light showing, centre "doing nothing" status light showing, but a few months ago, we had some power outages in the village where I live, and it failed to hold the power up, causing the computer attached to it to immediately reset. Arfa - I met Chris through some mutual friends -- he first started this business in his parent's basement (when he was finishing high school). IF you have a specific question -- fell free to call or e-mail him at the Internet -- I provided. APC has now been purchased by Schneider Electric (a French company that also acquired Square D a few years ago). gb |
APC Smart UPS shows overload with no load attached
"w9gb" wrote in message . .. "Arfa Daily" wrote in message ... "w9gb" wrote in message . .. wrote in message oups.com... How do I deal with a Smart UPS 1000 that shows overload after self test when no load is attached? The inverter sounds quite a bit louder than usual. I'm very interested in this. Are you directly involved with this refurbishment operation, to the point of knowing these units well ? I have a Smart-UPS 700. It seems to indicate that it thinks all is well when it is just idling, single computer on the end, one load light showing, centre "doing nothing" status light showing, but a few months ago, we had some power outages in the village where I live, and it failed to hold the power up, causing the computer attached to it to immediately reset. Arfa - I met Chris through some mutual friends -- he first started this business in his parent's basement (when he was finishing high school). IF you have a specific question -- fell free to call or e-mail him at the Internet -- I provided. APC has now been purchased by Schneider Electric (a French company that also acquired Square D a few years ago). gb If this Chris guy is the one to talk to with detailed knowledge of these, then yes. I would like to put my symptoms to him. As I'm sure you know if you're involved in service at all, it's very common if you explain a set of symptoms for an item that you're not familiar with, to someone who is, they will just say " Oh yes, that's a common problem. Just replace Q502 " or whatever. Once again, today, we had a brief power outage in the village, and once again, the ups didn't hold up. However, perhaps I'm missing something. This is the first reference that I've seen to him, and I'm not seeing any contact e-mail or web address for him anywhere. If you would prefer, just mail me his details direct off-group. Is he a licensed ham operator ? I note that you are mailing via the ARRL. I too am licensed here. Arfa |
APC Smart UPS shows overload with no load attached
On Feb 22, 8:08 am, "
wrote: I'm glad it seems to be working now at least. I just find it very odd that the way to cure the UPS sensing an overload is to plug a load into it, and thinking that maybe it has something to do with the high input voltage. Well, how odd. I had a Tripp Lite cheapo unit that claimed the battery was bad even though it was only a year old. I was also surprised to find that plugging a load into it allowed it to "see" the battery and charge it as usual. Is there something to this or did lightning just strike twice? |
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