5.1. Do we have standard troubleshooting procedure for UPS?
Basically, it’s the common procedure of troubleshooting for electronics:
Identify the problem
Establish a theory of possible causes
Crosscheck to narrow down the possible causes
Test the theory to determine the possible cause
Remove the cause and verify the result
For example, when you find out the UPS beeps for a while. That’s the symptom, then you should find out the problem of the symptom. The first step is to check the display of the UPS if it has combining the error code/warning icon and beep, then you should be able to identify the problem. (Here we use Clippers panel as example)
ClippersFaults Code & Warning indicator
If the UPS does not have the LCD display, you can check the user manual and find out the meaning of the beep : beep every second, twice every second or beep every 10 seconds have different meanings.
Most of the time, when you identify the problem, through the user manual, you can find out the theory of the problem, and you can test the theory. For examples, beeps per 10 second is battery mode, but you know the mains is available. Then, try to reconnect the power cord. If it works, you resolve the problem.
If the possible causes are many, probably you need to conduct crosscheck to narrow down the possible causes. For examples, the backup time is much less than the expectation. It could be the battery is not fully charged, the load is higher then expectation, or battery is aged. So, check the load, check charging time and so on to narrow down the possible root causes. Our troubleshooting guidance is written in each UPS’s user manual.