Polling issue on an HP C3000 enclosure

Hi all!
I don’t know if it’s a bug or not so I am asking for help here.
I have started to monitor an HP C3000 Enclosure and I was happy with the result. No errors, warning or alert for a while. And things a just changed few weeks ago and I don’t understand why… No from time to time I receive alert about some value to be at 0 (temp value for some fan) and 5 mns after, the issue is recovered. Then the issue come back and again recovered. I don’t know which command to sue to test the polling. Maybe the device for some reason does not provide the value but if it is the case how can I change the polling interval so it will not generate alerts every time?
I will post soon what the alerts looks like and the interval. Thanks for your help!

Here are the logs that I have:

2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 11:00:02 System state sensor has changed from 0 to 2
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:45 System state sensor has changed from 2 to 0
2017-01-30 10:55:39 System Temperature Chassis under threshold: 0 C (< 15.4 C)
2017-01-30 10:55:39 System Temperature System under threshold: 0 C (< 16.1 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 15.4 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 14 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 13.3 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 12.6 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 13.3 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 11.9 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 13.3 C)
2017-01-30 10:55:39 System Temperature Blade Bay under threshold: 0 C (< 13.3 C)