In Powerware EX 3000, died fan. Fan replaced but the error 07 (FAN) is not reset. The unit does not start, has studied the entire manual and software - have not found where the alarms are reset. Please Help.

SOURCE: Powerware 9120 DC Bus Fault Problem.

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.

SOURCE: Powerware 9120. 1500i UPS

You can download the manual and other literature at
http://www.powerware.com/EMEA/UPS/9120_info.asp

The contacts for support in India are found at
http://www.powerware.com/India/Service_Support/IN_Office_Contact.asp

They offer a battery monitoring software package, at
http://www.powerware.com/India/Service_Support/IN_Battery_Services.asp

You can email support at http://www.powerware.com/pp/Check.asp?key=code1
Good luck

SOURCE: powerware ups mod #PW9120100i

You have to turn socket of ups power cord 180 degrees, because the ups is measuring voltage between ground and ac-line.

SOURCE: 9120 fan stopped working

On Services can assist you in the repair of this UPS fan and any other critical power service parts/repairs. We have nationwide service, please contact us if you are still looking for assistance.

http://www.gowithon.com

SOURCE: Powerware 9120 BUS Unbalanced error display

I've had this same issue what it boils down to is that the Power IN is not being distributed properly across the Power Outlets.

Step 1. unplug everything from the unit and power the ups down. If the alarm clears itself the UPS is mostly likely fine. if it doesn't not clear send it in for repair

Step 2. If step 1 cleared the alarm try distributing the decives across the outlets differently.

There are two inverters so two output if everything is plugged into one side (ie a power bar with 10 things plugged into it) and nothing on the other side this could cause the alarm.

hope this helps