S7-LN blinks red, but hashes just fine

[cameloid]

I faced with kinda strange problem (?) with my S7-LN which I never experienced with other Antminers (S3, S5, S9).

The miner hashes at its normal hashrate, blinking green LED most of the time. But sometimes it may suddenly blink red LED (just once or few times in a row, without any beeping). Temperatures are good (usually around 62-64), fans are constantly at 3000 rpm, all ASICs are operable, no HW errors at all, network connection is stable.

So it basically looks just fine. What could be a potential cause of that red LED blinking?

[fanatic26]

Check the kernel log?