HP 1920 POE+ and Aruba IAP-305 in powersave mode

Hi,

we have some HP 1920 24g POE+ (370w) - JG926A with connected some Aruba IAP-305. Frequently but not always happens that the IAP-305 starts in powersave mode and it is necessary to reboot the AP or disable and re-enable the POE on the switch port to get the IAP-305 starting in the full mode. 

It doesn't happens with other switches, where the IAP-305 always starts in full mode. I tested with Aruba 2530 and 2930.

The orange light on the IAP-305 gives to the customer an impression of malfunctioning.

Somebody know how to avoid it?

Thanks!

Kind regards.

Michele