I use Phoenixminer 5.5c and miner is random reboot. In log is everything ok. I dont see and error. Why my miner is random rebooted. Sometimes working 15h, sometimes 3h, sometimes 25h.

Her is last few lines before restar.

2021.02.08:07:53:57.275: eths Eth: Received: {"jsonrpc":"2.0","id":0,"result":["0xffc36010b77a4d676e59699800cdf8b97b6a8341c0fdc6ae42ad467b93eef4a8","0x3cf8670019e79b15fd95c8b49f22fa2f0437367023efaec218c4449988d41ea1","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
2021.02.08:07:53:58.692: main Eth speed: 181.919 MH/s, shares: 114/0/0, time: 1:52
2021.02.08:07:53:58.692: main GPUs: 1: 30.461 MH/s (25) 2: 31.620 MH/s (11) 3: 31.499 MH/s (18) 4: 30.734 MH/s (17) 5: 57.605 MH/s (43)
2021.02.08:07:53:59.439: eths Eth: Received: {"jsonrpc":"2.0","id":0,"result":["0xf1eed3fbe1d04f9b46452173b825ee6cfc3f63f91877362ef891036c814ed477","0x3cf8670019e79b15fd95c8b49f22fa2f0437367023efaec218c4449988d41ea1","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
2021.02.08:07:53:59.439: eths Eth: New job #f1eed3fb from eth-eu1.nanopool.org:9999; diff: 10000MH
2021.02.08:07:54:01.499: main 
2021.02.08:07:54:01.499: main *** 1:52 *** 2/8 07:54 **************************************
2021.02.08:07:54:01.499: main Eth: Mining ETH on eth-eu1.nanopool.org:9999 for 1:52
2021.02.08:07:54:01.499: main Eth: Accepted shares 114 (0 stales), rejected shares 0 (0 stales)
2021.02.08:07:54:01.499: main Eth: Incorrect shares 0 (0.00%), est. stales percentage 0.00%
2021.02.08:07:54:01.499: main Eth: Maximum difficulty of found share: 859.6 GH (!)
2021.02.08:07:54:01.499: main Eth: Average speed (5 min): 182.088 MH/s
2021.02.08:07:54:01.499: main Eth: Effective speed: 168.49 MH/s; at pool: 168.49 MH/s
2021.02.08:07:54:01.499: main 
2021.02.08:07:54:01.700: main GPU1: 43C 60% 81W, GPU2: 45C 60% 69W, GPU3: 46C 60% 76W, GPU4: 44C 60% 78W, GPU5: 40C 63% 123W
GPUs power: 427.4 W
2021.02.08:07:54:02.468: eths Eth: Received: {"jsonrpc":"2.0","id":0,"result":["0xd4b0246988f235b88adc9cc0bf6a225ee734865437b3e79f82787f8d32c725c9","0x3cf8670019e79b15fd95c8b49f22fa2f0437367023efaec218c4449988d41ea1","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
2021.02.08:07:54:02.469: eths Eth: New job #d4b02469 from eth-eu1.nanopool.org:9999; diff: 10000MH
2021.02.08:07:54:03.705: main Eth speed: 181.347 MH/s, shares: 114/0/0, time: 1:52
2021.02.08:07:54:03.705: main GPUs: 1: 29.742 MH/s (25) 2: 31.617 MH/s (11) 3: 31.515 MH/s (18) 4: 30.867 MH/s (17) 5: 57.605 MH/s (43)