I have a EATON EX RT 11 that shows ;DC BUS FAILURE - 1CM15046 V02' error on screen. What causes this error? How can this be repaired? Unit is out of warranty

kindly share photos of the pc

Eaton EX RT manuals
http://powerquality.eaton.com/Products-services/Backup-Power-UPS/EX-RT-eol.aspx?cx=35&GUID=58ADEC93-838C-45A7-A6C0-309E1A3A958B

Error code e11 is a communications error. The causes listed in the manual for the outdoor unit are:
1) Connection failure.
2) External cause
3) Main PCB failure.
4) Active filter module failure.
5) Transistor PCB (IPM) failure.
6) Filter PCB failure
7) Outdoor unit Fan motor failure

For the indoor unit the listed causes are:
1. Connection failure
2. External cause
3. Controller PCB failure

With any luck you will have a wiring problem(loose/broken wire). Unfortunately it is more likely to be the Main PCB. Good luck!

call the ups engineers for an answer to the problem when connected to solar power
there may be a problem in that solar panels produce various voltages during the day ( depending on the cloud coverage ) and the ups requires a reasonably steady input voltage to operate properly
I have found the eaton ups product to reliable so the suggestion to talk with the engineers to ensure that the system is compatible with the solar set up would be to your advantage

There`s two configurations that you need to check.
On UPS display, what voltaje is showing as output voltage?
There`s a chance that it is configured to 200 vac, then the transformer module will convert this to 100/200 vac.
If this is not the situation, probably the error is in the input connection of transformer module.

Dc bus error is from charger o maybe inverter

This could be because of bad batteries or you need to adjust the float voltage. First replace batteries

Matias,
Try using the Intelligent Power Software Suite (IPSS):
http://powerquality.eaton.com/Products-services/Power-Management/Software.asp
If you are trying to monitor the UPS, use Intelligent Power Manager (IPM). If you are trying to shutdown the Virtual Machine safely, use Intelligent Power Protector (IPP).

There are numerous fuses (rectifier, inverter, charger, battery) on the 9135 that are located internal to the unit and not readily accessible to the user. Generally a blown fuse is accompanied by another component failure which caused the fuse to blow in the first place. As a result, additional troubleshooting and testing is usually required to identify the root cause of the failure. This of course leads to soliciting the services of a technician who has access to the schematics, test equipment, and parts to initiate a repair. Without the schematics, it's like working in the dark. For complete support, please contact Eaton (Eaton bought Powerware so now it's the Eaton 9135):

Toll Free: 1 800 356 5737
E-mail: [email protected]

www.eaton.com/9135

there is a 100uf/63v capacitor near the IRF630 fet. You need to replace this in order to fix this error. Along there is also a 2200uf/16v capacitor. It is a good idea to change the both at the same time.