It looks like I have run into the same issue with one of my PPP's for the second time in less than a week.

I powered up both of my units, one each on their own separate 20amp line. The only components plugged into each PPP is one 1.2kw amp. One of the two PPP's showed corrected distortion at 5.5% while the other showed ~1% a value around which both normally fluctuate. To get the one unit's value back to ~1% I had to unplug the unit from the wall, then plug it right back in and allow itself to "reset".

I mentioned this in another thread a few days ago, and I found out how to get it back to normal when I swapped power cords between units to see if it was the power or the unit. It stays with the same amp.

Should I be worried about this?

__________________
AMP's: D'Agostino Momentum's
Pre Amp: Mcintosh C-1000 & C-1000P
Sources: McIntosh MCD-1100 & MS-300, Olive 4HD, SonoS, Pro-Ject 6 PerspeX
Speakers: MBL 111F
Cables: Transparent Ultra MM2 & Reference MM2 & Powerlink MM2x