Antminer S19 PRO Hydro - chain avg vol drop

[Beny44]

Hey,

I'm having problems with the Hydro version of S19. The miner has been mining for a few days and all of a sudden reports a chain avg vol drop. It starts to resolve the voltage and mining drops out. Only a restart always helps.
With S19 with fans it is supposedly the bad cooling of the power supply that does it, but here the temperatures are fine, I would say rather lower.
Any idea?

Thanks

Code:

2024-02-07 07:53:02 30m avg rate is 185950.26 in 30 mins

2024-02-07 08:23:09 30m avg rate is 185605.11 in 30 mins

2024-02-07 08:53:15 30m avg rate is 185564.06 in 30 mins

2024-02-07 09:23:20 30m avg rate is 186006.91 in 30 mins

2024-02-07 09:33:02 chain avg vol drop to 0.95
2024-02-07 09:33:14 chain avg vol rise to 20.68
2024-02-07 09:33:21 entrance_temp = 33, work_vol = 2040, curr_vol = 2040, ->tgt_volt = 2050

2024-02-07 09:33:21 set_voltage_by_steps to 2050.

2024-02-07 09:33:50 entrance_temp = 30, work_vol = 2040, curr_vol = 2050, ->tgt_volt = 2061

2024-02-07 09:33:50 set_voltage_by_steps to 2061.

2024-02-07 09:34:22 entrance_temp = 27, work_vol = 2040, curr_vol = 2061, ->tgt_volt = 2071

[BitMaxz]

I don't know what exactly happens before you get this logs if you could post the whole kernel logs here we can maybe get some idea of what happened to the miner from the whole logs.

For now, what I could suggest is to flash the unit first with the latest firmware version and maybe it's just a bug that needs to be reflash and it can be fixed by upgrading it to the latest version.

If you can't post the whole logs here you can use pastebin.com and paste the URL here.

[Beny44]

I don't know what exactly happens before you get this logs if you could post the whole kernel logs here we can maybe get some idea of what happened to the miner from the whole logs.

For now, what I could suggest is to flash the unit first with the latest firmware version and maybe it's just a bug that needs to be reflash and it can be fixed by upgrading it to the latest version.

If you can't post the whole logs here you can use pastebin.com and paste the URL here.

Thanks for the reply and the confusion in the other thread ...
To your suggestions.
1. I uploaded the firmware last what is
2. I will upload the full log, but as you will see, the miner ran for a day and then started to drop on the chain. I suspect a voltage drop in the mains. Everything else is fine.
3. Input temperature is 24*C, temperature after the source at the distributor is 24.2*C.
4. Internet stable.

Code:

1970-01-01 00:00:11 This is fix-freq version

1970-01-01 00:00:11 Miner compile time: Wed Mar  8 15:29:52 CST 2023 type: Antminer S19 Pro Hyd.

1970-01-01 00:00:11 commit version: dd076742 2022-10-27 22:42:25, build by: jenkins 2023-03-08 15:44:11

1970-01-01 00:00:11 opt_multi_version     = 1

1970-01-01 00:00:11 opt_bitmain_ab        = 1

1970-01-01 00:00:11 mid_auto_gen          = 1

1970-01-01 00:00:11 opt_bitmain_work_mode = 0

1970-01-01 00:00:11 mmap fpga_mem_addr_hal = 0xb4e00000

1970-01-01 00:00:11 HASH_ON_PLUG V9 = 0xf

1970-01-01 00:00:11 Note: front fan is power on!

1970-01-01 00:00:11 Note: rear fan is power on!

1970-01-01 00:00:11 start the http server

1970-01-01 00:00:11 httpserver:6060 started ok
1970-01-01 00:00:17 miner ID : 8078b44e2fbea854

1970-01-01 00:00:17 FPGA Version = 0xB031

1970-01-01 00:00:17 HASH_ON_PLUG V9 = 0xf

1970-01-01 00:00:17 ==========================capability start==========================

1970-01-01 00:00:17 board num = 4

1970-01-01 00:00:17 board id = 0, chain num = 1

1970-01-01 00:00:17 	chain id = 0

1970-01-01 00:00:17 board id = 1, chain num = 1

1970-01-01 00:00:17 	chain id = 1

1970-01-01 00:00:17 board id = 2, chain num = 1

1970-01-01 00:00:17 	chain id = 2

1970-01-01 00:00:17 board id = 3, chain num = 1

1970-01-01 00:00:17 	chain id = 3

1970-01-01 00:00:17 ==========================capability end============================

1970-01-01 00:00:17 chain num = 4
1970-01-01 00:00:17 skip loading levels for now

2024-02-06 10:14:33 load chain 0 eeprom data

2024-02-06 10:14:38 load chain 1 eeprom data

2024-02-06 10:14:42 load chain 2 eeprom data

2024-02-06 10:14:47 load chain 3 eeprom data

2024-02-06 10:14:47 updated miner type to: Antminer S19 Pro Hyd.

2024-02-06 10:14:47 multi machine mode

2024-02-06 10:14:47 load machine HHB42602 conf

2024-02-06 10:14:47 machine : HHB42602 

2024-02-06 10:14:47 chain_num 4, chain_domain_num 60, chain_asic_num 180, domain_asic_num 3

2024-02-06 10:14:47 multi miner type mode

2024-02-06 10:14:47 fan_eft : 0  fan_pwm : 100

2024-02-06 10:14:47 create thread get_nonce_and_register_thread

2024-02-06 10:14:47 fixed working voltage = 2040

2024-02-06 10:14:47 Chain [0] PCB Version: 0x0200

2024-02-06 10:14:47 Chain [0] BOM Version: 0x0010

2024-02-06 10:14:47 Chain [1] PCB Version: 0x0200

2024-02-06 10:14:47 Chain [1] BOM Version: 0x0010

2024-02-06 10:14:47 Chain [2] PCB Version: 0x0200

2024-02-06 10:14:47 Chain [2] BOM Version: 0x0010

2024-02-06 10:14:47 Chain [3] PCB Version: 0x0200

2024-02-06 10:14:47 Chain [3] BOM Version: 0x0010

2024-02-06 10:14:47 chain[0] PIC jump to app

2024-02-06 10:14:49 Check chain[0] PIC fw version=0xfe

2024-02-06 10:14:50 chain[1] PIC jump to app

2024-02-06 10:14:52 Check chain[1] PIC fw version=0xfe

2024-02-06 10:14:53 chain[2] PIC jump to app

2024-02-06 10:14:54 Check chain[2] PIC fw version=0xfe

2024-02-06 10:14:56 chain[3] PIC jump to app

2024-02-06 10:14:57 Check chain[3] PIC fw version=0xfe

2024-02-06 10:14:58 create thread pic_heart_beat_thread

2024-02-06 10:14:58 max sensor num = 4
2024-02-06 10:14:58 STATUS_INITED: soc init done!

2024-02-06 10:14:58 temperature_monitor_thread start...
2024-02-06 10:15:01 start to init...

2024-02-06 10:15:43 get power version failed

2024-02-06 10:15:43 check power version failed, use v2 protocal to try it again

2024-02-06 10:15:44 power open power_version = 0x64

2024-02-06 10:15:49 power is Calibrated

2024-02-06 10:15:49 power sn:KLKT330BBJIAF1256

2024-02-06 10:15:49 enable_power_calibration, calibration date:211208.

2024-02-06 10:16:39 get power version failed

2024-02-06 10:16:39 check power version failed, use v2 protocal to try it again

2024-02-06 10:16:40 power type version: 0x0064

2024-02-06 10:16:40 Initializing the power, please wait, this may take up to 2 minutes...

2024-02-06 10:17:12 Slept 30 seconds, diff = 1.

2024-02-06 10:17:12 set_voltage_by_steps to 2100.

2024-02-06 10:17:17 chain avg vol rise to 21.34
2024-02-06 10:17:21 start up min temp by 75a = 21
2024-02-06 10:17:21 water temp 21 ~ 22, stop.

2024-02-06 10:17:21 Bring up temperature is 21

2024-02-06 10:17:21 set UART baud to 115200

2024-02-06 10:17:31 Chain[0]: find 180 asic, times 0

2024-02-06 10:17:41 Chain[1]: find 180 asic, times 0

2024-02-06 10:17:51 Chain[2]: find 180 asic, times 0

2024-02-06 10:18:01 Chain[3]: find 180 asic, times 0

2024-02-06 10:18:06 pulse_mode = 1, ccdly_sel = 0, pwth_sel = 0

2024-02-06 10:18:18 min freq in eeprom = 505

2024-02-06 10:18:18 fixed frequency is 505

2024-02-06 10:18:18 Bring up temperature is 21

2024-02-06 10:18:18 pulse_mode = 1, ccdly_sel = 0, pwth_sel = 0

2024-02-06 10:18:18 start do_core_reset
2024-02-06 10:18:58 end do_core_reset
2024-02-06 10:19:03 set UART baud to 3000000

2024-02-06 10:19:03 create thread check_miner_status_thread

2024-02-06 10:19:03 create thread check_system_work_thread

2024-02-06 10:19:03 set_voltage_by_steps to 2160.

2024-02-06 10:19:03 bitmain_set_voltage failed
2024-02-06 10:19:03 fixed step freq_start = 50, freq_end = 505, freq_step = 6.25

2024-02-06 10:19:03 chain = 0 set freq to 56.25
2024-02-06 10:19:03 chain = 1 set freq to 56.25
2024-02-06 10:19:03 chain = 2 set freq to 56.25
2024-02-06 10:19:03 chain = 3 set freq to 56.25
2024-02-06 10:19:04 chain = 0 set freq to 62.50
2024-02-06 10:19:04 chain = 1 set freq to 62.50
2024-02-06 10:19:04 chain = 2 set freq to 62.50
2024-02-06 10:19:04 chain = 3 set freq to 62.50
2024-02-06 10:19:04 chain = 0 set freq to 68.75
2024-02-06 10:19:04 chain = 1 set freq to 68.75
2024-02-06 10:19:04 chain = 2 set freq to 68.75
2024-02-06 10:19:04 chain = 3 set freq to 68.75
2024-02-06 10:19:04 chain = 0 set freq to 75.00
2024-02-06 10:19:04 chain = 1 set freq to 75.00
2024-02-06 10:19:04 chain = 2 set freq to 75.00
2024-02-06 10:19:04 chain = 3 set freq to 75.00
2024-02-06 10:19:04 chain = 0 set freq to 81.25
2024-02-06 10:19:04 chain = 1 set freq to 81.25
2024-02-06 10:19:04 chain = 2 set freq to 81.25
2024-02-06 10:19:04 chain = 3 set freq to 81.25
2024-02-06 10:19:04 chain = 0 set freq to 87.50
2024-02-06 10:19:04 chain = 1 set freq to 87.50
2024-02-06 10:19:04 chain = 2 set freq to 87.50
2024-02-06 10:19:04 chain = 3 set freq to 87.50
2024-02-06 10:19:04 chain = 0 set freq to 93.75
2024-02-06 10:19:04 chain = 1 set freq to 93.75
2024-02-06 10:19:04 chain = 2 set freq to 93.75
2024-02-06 10:19:04 chain = 3 set freq to 93.75
2024-02-06 10:19:04 chain = 0 set freq to 100.00
2024-02-06 10:19:04 chain = 1 set freq to 100.00
2024-02-06 10:19:04 chain = 2 set freq to 100.00
2024-02-06 10:19:04 chain = 3 set freq to 100.00
2024-02-06 10:19:04 chain = 0 set freq to 106.25
2024-02-06 10:19:04 chain = 1 set freq to 106.25
2024-02-06 10:19:04 chain = 2 set freq to 106.25
2024-02-06 10:19:04 chain = 3 set freq to 106.25
2024-02-06 10:19:04 chain = 0 set freq to 112.50
2024-02-06 10:19:04 chain = 1 set freq to 112.50
2024-02-06 10:19:04 chain = 2 set freq to 112.50
2024-02-06 10:19:04 chain = 3 set freq to 112.50
2024-02-06 10:19:04 chain = 0 set freq to 118.75
2024-02-06 10:19:04 chain = 1 set freq to 118.75
2024-02-06 10:19:04 chain = 2 set freq to 118.75
2024-02-06 10:19:04 chain = 3 set freq to 118.75
2024-02-06 10:19:05 chain = 0 set freq to 125.00
2024-02-06 10:19:05 chain = 1 set freq to 125.00
2024-02-06 10:19:05 chain = 2 set freq to 125.00
2024-02-06 10:19:05 chain = 3 set freq to 125.00
2024-02-06 10:19:05 chain = 0 set freq to 131.25
2024-02-06 10:19:05 chain = 1 set freq to 131.25
2024-02-06 10:19:05 chain = 2 set freq to 131.25
2024-02-06 10:19:05 chain = 3 set freq to 131.25
2024-02-06 10:19:05 chain = 0 set freq to 137.50
2024-02-06 10:19:05 chain = 1 set freq to 137.50
2024-02-06 10:19:05 chain = 2 set freq to 137.50
2024-02-06 10:19:05 chain = 3 set freq to 137.50
2024-02-06 10:19:05 chain = 0 set freq to 143.75
2024-02-06 10:19:05 chain = 1 set freq to 143.75
2024-02-06 10:19:05 chain = 2 set freq to 143.75
2024-02-06 10:19:05 chain = 3 set freq to 143.75
2024-02-06 10:19:05 chain = 0 set freq to 150.00
2024-02-06 10:19:05 chain = 1 set freq to 150.00
2024-02-06 10:19:05 chain = 2 set freq to 150.00
2024-02-06 10:19:05 chain = 3 set freq to 150.00
2024-02-06 10:19:05 chain = 0 set freq to 156.25
2024-02-06 10:19:05 chain = 1 set freq to 156.25
2024-02-06 10:19:05 chain = 2 set freq to 156.25
2024-02-06 10:19:05 chain = 3 set freq to 156.25
2024-02-06 10:19:05 chain = 0 set freq to 162.50
2024-02-06 10:19:05 chain = 1 set freq to 162.50
2024-02-06 10:19:05 chain = 2 set freq to 162.50
2024-02-06 10:19:05 chain = 3 set freq to 162.50
2024-02-06 10:19:05 chain = 0 set freq to 168.75
2024-02-06 10:19:05 chain = 1 set freq to 168.75
2024-02-06 10:19:05 chain = 2 set freq to 168.75
2024-02-06 10:19:05 chain = 3 set freq to 168.75
2024-02-06 10:19:05 chain = 0 set freq to 175.00
2024-02-06 10:19:05 chain = 1 set freq to 175.00
2024-02-06 10:19:05 chain = 2 set freq to 175.00
2024-02-06 10:19:05 chain = 3 set freq to 175.00
2024-02-06 10:19:06 chain = 0 set freq to 181.25
2024-02-06 10:19:06 chain = 1 set freq to 181.25
2024-02-06 10:19:06 chain = 2 set freq to 181.25
2024-02-06 10:19:06 chain = 3 set freq to 181.25
2024-02-06 10:19:06 chain = 0 set freq to 187.50
2024-02-06 10:19:06 chain = 1 set freq to 187.50
2024-02-06 10:19:06 chain = 2 set freq to 187.50
2024-02-06 10:19:06 chain = 3 set freq to 187.50
2024-02-06 10:19:06 chain = 0 set freq to 193.75
2024-02-06 10:19:06 chain = 1 set freq to 193.75
2024-02-06 10:19:06 chain = 2 set freq to 193.75
2024-02-06 10:19:06 chain = 3 set freq to 193.75
2024-02-06 10:19:06 chain = 0 set freq to 200.00
2024-02-06 10:19:06 chain = 1 set freq to 200.00
2024-02-06 10:19:06 chain = 2 set freq to 200.00
2024-02-06 10:19:06 chain = 3 set freq to 200.00
2024-02-06 10:19:06 chain = 0 set freq to 206.25
2024-02-06 10:19:06 chain = 1 set freq to 206.25
2024-02-06 10:19:06 chain = 2 set freq to 206.25
2024-02-06 10:19:06 chain = 3 set freq to 206.25
2024-02-06 10:19:06 chain = 0 set freq to 212.50
2024-02-06 10:19:06 chain = 1 set freq to 212.50
2024-02-06 10:19:06 chain = 2 set freq to 212.50
2024-02-06 10:19:06 chain = 3 set freq to 212.50
2024-02-06 10:19:06 chain = 0 set freq to 218.75
2024-02-06 10:19:06 chain = 1 set freq to 218.75
2024-02-06 10:19:06 chain = 2 set freq to 218.75
2024-02-06 10:19:06 chain = 3 set freq to 218.75
2024-02-06 10:19:06 chain = 0 set freq to 225.00
2024-02-06 10:19:06 chain = 1 set freq to 225.00
2024-02-06 10:19:06 chain = 2 set freq to 225.00
2024-02-06 10:19:06 chain = 3 set freq to 225.00
2024-02-06 10:19:06 chain = 0 set freq to 231.25
2024-02-06 10:19:06 chain = 1 set freq to 231.25
2024-02-06 10:19:06 chain = 2 set freq to 231.25
2024-02-06 10:19:06 chain = 3 set freq to 231.25
2024-02-06 10:19:06 chain = 0 set freq to 237.50
2024-02-06 10:19:06 chain = 1 set freq to 237.50
2024-02-06 10:19:06 chain = 2 set freq to 237.50
2024-02-06 10:19:06 chain = 3 set freq to 237.50
2024-02-06 10:19:07 chain = 0 set freq to 243.75
2024-02-06 10:19:07 chain = 1 set freq to 243.75
2024-02-06 10:19:07 chain = 2 set freq to 243.75
2024-02-06 10:19:07 chain = 3 set freq to 243.75
2024-02-06 10:19:07 chain = 0 set freq to 250.00
2024-02-06 10:19:07 chain = 1 set freq to 250.00
2024-02-06 10:19:07 chain = 2 set freq to 250.00
2024-02-06 10:19:07 chain = 3 set freq to 250.00
2024-02-06 10:19:07 chain = 0 set freq to 256.25
2024-02-06 10:19:07 chain = 1 set freq to 256.25
2024-02-06 10:19:07 chain = 2 set freq to 256.25
2024-02-06 10:19:07 chain = 3 set freq to 256.25
2024-02-06 10:19:07 chain = 0 set freq to 262.50
2024-02-06 10:19:07 chain = 1 set freq to 262.50
2024-02-06 10:19:07 chain = 2 set freq to 262.50
2024-02-06 10:19:07 chain = 3 set freq to 262.50
2024-02-06 10:19:07 chain = 0 set freq to 268.75
2024-02-06 10:19:07 chain = 1 set freq to 268.75
2024-02-06 10:19:07 chain = 2 set freq to 268.75
2024-02-06 10:19:07 chain = 3 set freq to 268.75
2024-02-06 10:19:07 chain = 0 set freq to 275.00
2024-02-06 10:19:07 chain = 1 set freq to 275.00
2024-02-06 10:19:07 chain = 2 set freq to 275.00
2024-02-06 10:19:07 chain = 3 set freq to 275.00
2024-02-06 10:19:07 chain = 0 set freq to 281.25
2024-02-06 10:19:07 chain = 1 set freq to 281.25
2024-02-06 10:19:07 chain = 2 set freq to 281.25
2024-02-06 10:19:07 chain = 3 set freq to 281.25
2024-02-06 10:19:07 chain = 0 set freq to 287.50
2024-02-06 10:19:07 chain = 1 set freq to 287.50
2024-02-06 10:19:07 chain = 2 set freq to 287.50
2024-02-06 10:19:07 chain = 3 set freq to 287.50
2024-02-06 10:19:07 chain = 0 set freq to 293.75
2024-02-06 10:19:07 chain = 1 set freq to 293.75
2024-02-06 10:19:07 chain = 2 set freq to 293.75
2024-02-06 10:19:07 chain = 3 set freq to 293.75
2024-02-06 10:19:08 chain = 0 set freq to 300.00
2024-02-06 10:19:08 chain = 1 set freq to 300.00
2024-02-06 10:19:08 chain = 2 set freq to 300.00
2024-02-06 10:19:08 chain = 3 set freq to 300.00
2024-02-06 10:19:08 chain = 0 set freq to 306.25
2024-02-06 10:19:08 chain = 1 set freq to 306.25
2024-02-06 10:19:08 chain = 2 set freq to 306.25
2024-02-06 10:19:08 chain = 3 set freq to 306.25
2024-02-06 10:19:08 chain = 0 set freq to 312.50
2024-02-06 10:19:08 chain = 1 set freq to 312.50
2024-02-06 10:19:08 chain = 2 set freq to 312.50
2024-02-06 10:19:08 chain = 3 set freq to 312.50
2024-02-06 10:19:08 chain = 0 set freq to 318.75
2024-02-06 10:19:08 chain = 1 set freq to 318.75
2024-02-06 10:19:08 chain = 2 set freq to 318.75
2024-02-06 10:19:08 chain = 3 set freq to 318.75
2024-02-06 10:19:08 chain = 0 set freq to 325.00
2024-02-06 10:19:08 chain = 1 set freq to 325.00
2024-02-06 10:19:08 chain = 2 set freq to 325.00
2024-02-06 10:19:08 chain = 3 set freq to 325.00
2024-02-06 10:19:08 chain = 0 set freq to 331.25
2024-02-06 10:19:08 chain = 1 set freq to 331.25
2024-02-06 10:19:08 chain = 2 set freq to 331.25
2024-02-06 10:19:08 chain = 3 set freq to 331.25
2024-02-06 10:19:08 chain = 0 set freq to 337.50
2024-02-06 10:19:08 chain = 1 set freq to 337.50
2024-02-06 10:19:08 chain = 2 set freq to 337.50
2024-02-06 10:19:08 chain = 3 set freq to 337.50
2024-02-06 10:19:08 chain = 0 set freq to 343.75
2024-02-06 10:19:08 chain = 1 set freq to 343.75
2024-02-06 10:19:08 chain = 2 set freq to 343.75
2024-02-06 10:19:08 chain = 3 set freq to 343.75
2024-02-06 10:19:08 chain = 0 set freq to 350.00
2024-02-06 10:19:08 chain = 1 set freq to 350.00
2024-02-06 10:19:08 chain = 2 set freq to 350.00
2024-02-06 10:19:08 chain = 3 set freq to 350.00
2024-02-06 10:19:08 chain = 0 set freq to 356.25
2024-02-06 10:19:08 chain = 1 set freq to 356.25
2024-02-06 10:19:08 chain = 2 set freq to 356.25
2024-02-06 10:19:08 chain = 3 set freq to 356.25
2024-02-06 10:19:09 chain = 0 set freq to 362.50
2024-02-06 10:19:09 chain = 1 set freq to 362.50
2024-02-06 10:19:09 chain = 2 set freq to 362.50
2024-02-06 10:19:09 chain = 3 set freq to 362.50
2024-02-06 10:19:09 chain = 0 set freq to 368.75
2024-02-06 10:19:09 chain = 1 set freq to 368.75
2024-02-06 10:19:09 chain = 2 set freq to 368.75
2024-02-06 10:19:09 chain = 3 set freq to 368.75
2024-02-06 10:19:09 chain = 0 set freq to 375.00
2024-02-06 10:19:09 chain = 1 set freq to 375.00
2024-02-06 10:19:09 chain = 2 set freq to 375.00
2024-02-06 10:19:09 chain = 3 set freq to 375.00
2024-02-06 10:19:09 chain = 0 set freq to 381.25
2024-02-06 10:19:09 chain = 1 set freq to 381.25
2024-02-06 10:19:09 chain = 2 set freq to 381.25
2024-02-06 10:19:09 chain = 3 set freq to 381.25
2024-02-06 10:19:09 chain = 0 set freq to 387.50
2024-02-06 10:19:09 chain = 1 set freq to 387.50
2024-02-06 10:19:09 chain = 2 set freq to 387.50
2024-02-06 10:19:09 chain = 3 set freq to 387.50
2024-02-06 10:19:09 chain = 0 set freq to 393.75
2024-02-06 10:19:09 chain = 1 set freq to 393.75
2024-02-06 10:19:09 chain = 2 set freq to 393.75
2024-02-06 10:19:09 chain = 3 set freq to 393.75
2024-02-06 10:19:09 chain = 0 set freq to 400.00
2024-02-06 10:19:09 chain = 1 set freq to 400.00
2024-02-06 10:19:09 chain = 2 set freq to 400.00
2024-02-06 10:19:09 chain = 3 set freq to 400.00
2024-02-06 10:19:09 chain = 0 set freq to 406.25
2024-02-06 10:19:09 chain = 1 set freq to 406.25
2024-02-06 10:19:09 chain = 2 set freq to 406.25
2024-02-06 10:19:09 chain = 3 set freq to 406.25
2024-02-06 10:19:09 chain = 0 set freq to 412.50
2024-02-06 10:19:09 chain = 1 set freq to 412.50
2024-02-06 10:19:09 chain = 2 set freq to 412.50
2024-02-06 10:19:09 chain = 3 set freq to 412.50
2024-02-06 10:19:10 chain = 0 set freq to 418.75
2024-02-06 10:19:10 chain = 1 set freq to 418.75
2024-02-06 10:19:10 chain = 2 set freq to 418.75
2024-02-06 10:19:10 chain = 3 set freq to 418.75
2024-02-06 10:19:10 chain = 0 set freq to 425.00
2024-02-06 10:19:10 chain = 1 set freq to 425.00
2024-02-06 10:19:10 chain = 2 set freq to 425.00
2024-02-06 10:19:10 chain = 3 set freq to 425.00
2024-02-06 10:19:10 chain = 0 set freq to 431.25
2024-02-06 10:19:10 chain = 1 set freq to 431.25
2024-02-06 10:19:10 chain = 2 set freq to 431.25
2024-02-06 10:19:10 chain = 3 set freq to 431.25
2024-02-06 10:19:10 chain = 0 set freq to 437.50
2024-02-06 10:19:10 chain = 1 set freq to 437.50
2024-02-06 10:19:10 chain = 2 set freq to 437.50
2024-02-06 10:19:10 chain = 3 set freq to 437.50
2024-02-06 10:19:10 chain = 0 set freq to 443.75
2024-02-06 10:19:10 chain = 1 set freq to 443.75
2024-02-06 10:19:10 chain = 2 set freq to 443.75
2024-02-06 10:19:10 chain = 3 set freq to 443.75
2024-02-06 10:19:10 chain = 0 set freq to 450.00
2024-02-06 10:19:10 chain = 1 set freq to 450.00
2024-02-06 10:19:10 chain = 2 set freq to 450.00
2024-02-06 10:19:10 chain = 3 set freq to 450.00
2024-02-06 10:19:10 chain = 0 set freq to 456.25
2024-02-06 10:19:10 chain = 1 set freq to 456.25
2024-02-06 10:19:10 chain = 2 set freq to 456.25
2024-02-06 10:19:10 chain = 3 set freq to 456.25
2024-02-06 10:19:10 chain = 0 set freq to 462.50
2024-02-06 10:19:10 chain = 1 set freq to 462.50
2024-02-06 10:19:10 chain = 2 set freq to 462.50
2024-02-06 10:19:10 chain = 3 set freq to 462.50
2024-02-06 10:19:10 chain = 0 set freq to 468.75
2024-02-06 10:19:10 chain = 1 set freq to 468.75
2024-02-06 10:19:10 chain = 2 set freq to 468.75
2024-02-06 10:19:10 chain = 3 set freq to 468.75
2024-02-06 10:19:10 set_voltage_by_steps to 2153.

2024-02-06 10:19:10 bitmain_set_voltage failed
2024-02-06 10:19:12 chain = 0 set freq to 475.00
2024-02-06 10:19:12 chain = 1 set freq to 475.00
2024-02-06 10:19:12 chain = 2 set freq to 475.00
2024-02-06 10:19:12 chain = 3 set freq to 475.00
2024-02-06 10:19:12 set_voltage_by_steps to 2146.

2024-02-06 10:19:17 chain = 0 set freq to 481.25
2024-02-06 10:19:17 chain = 1 set freq to 481.25
2024-02-06 10:19:17 chain = 2 set freq to 481.25
2024-02-06 10:19:17 chain = 3 set freq to 481.25
2024-02-06 10:19:17 set_voltage_by_steps to 2139.

2024-02-06 10:19:22 chain = 0 set freq to 487.50
2024-02-06 10:19:22 chain = 1 set freq to 487.50
2024-02-06 10:19:22 chain = 2 set freq to 487.50
2024-02-06 10:19:22 chain = 3 set freq to 487.50
2024-02-06 10:19:22 set_voltage_by_steps to 2132.

2024-02-06 10:19:27 chain = 0 set freq to 493.75
2024-02-06 10:19:27 chain = 1 set freq to 493.75
2024-02-06 10:19:27 chain = 2 set freq to 493.75
2024-02-06 10:19:27 chain = 3 set freq to 493.75
2024-02-06 10:19:27 set_voltage_by_steps to 2125.

2024-02-06 10:19:31 chain = 0 set freq to 500.00
2024-02-06 10:19:31 chain = 1 set freq to 500.00
2024-02-06 10:19:31 chain = 2 set freq to 500.00
2024-02-06 10:19:31 chain = 3 set freq to 500.00
2024-02-06 10:19:31 set_voltage_by_steps to 2118.

2024-02-06 10:19:36 chain = 0 set freq to 505.00
2024-02-06 10:19:36 chain = 1 set freq to 505.00
2024-02-06 10:19:36 chain = 2 set freq to 505.00
2024-02-06 10:19:36 chain = 3 set freq to 505.00
2024-02-06 10:19:36 set_voltage_by_steps to 2111.

2024-02-06 10:19:41 set_voltage_by_steps to 2110.

2024-02-06 10:19:44 pulse_mode = 1, ccdly_sel = 0, pwth_sel = 0

2024-02-06 10:19:44 start do_core_reset
2024-02-06 10:20:24 end do_core_reset
2024-02-06 10:20:34 set_voltage_by_steps to 2108.

2024-02-06 10:20:39 set_voltage_by_steps to 2106.

2024-02-06 10:20:43 set_voltage_by_steps to 2104.

2024-02-06 10:20:48 set_voltage_by_steps to 2102.

2024-02-06 10:20:52 set_voltage_by_steps to 2100.

2024-02-06 10:20:55 Init done!

2024-02-06 10:20:55 STATUS_OKAY

2024-02-06 10:20:55 start the cached job
2024-02-06 10:20:55 Version num 256

2024-02-06 10:20:55 Mask num 0x1fe000

2024-02-06 10:20:55 freq = 505, percent = 90, hcn = 2595, timeout = 5979

2024-02-06 10:20:55 set_start_time_point total_tv_start_sys=404 total_tv_end_sys=405

2024-02-06 10:20:55 entrance_temp = 41, ->work_vol = 2040, curr_vol = 2100

2024-02-06 10:20:55 set_voltage_by_steps to 2090.

2024-02-06 10:20:58 set_voltage_by_steps to 2080.

2024-02-06 10:21:00 set_voltage_by_steps to 2070.

2024-02-06 10:21:03 set_voltage_by_steps to 2060.

2024-02-06 10:21:06 set_voltage_by_steps to 2050.

2024-02-06 10:21:09 set_voltage_by_steps to 2040.

2024-02-06 10:49:08 30m avg rate is 185265.44 in 28 mins

2024-02-06 11:19:13 30m avg rate is 184972.44 in 30 mins

2024-02-06 11:49:19 30m avg rate is 185801.02 in 30 mins

2024-02-06 12:19:24 30m avg rate is 186252.16 in 30 mins

2024-02-06 12:49:30 30m avg rate is 185615.23 in 30 mins

2024-02-06 13:19:35 30m avg rate is 185726.75 in 30 mins

2024-02-06 13:49:41 30m avg rate is 185470.86 in 30 mins

2024-02-06 14:19:46 30m avg rate is 185977.67 in 30 mins

2024-02-06 14:49:52 30m avg rate is 185968.45 in 30 mins

2024-02-06 15:19:57 30m avg rate is 185827.82 in 30 mins

2024-02-06 15:50:02 30m avg rate is 185866.78 in 30 mins

2024-02-06 16:20:08 30m avg rate is 185601.83 in 30 mins

2024-02-06 16:50:13 30m avg rate is 185892.35 in 30 mins

2024-02-06 17:20:19 30m avg rate is 185932.59 in 30 mins

2024-02-06 17:50:25 30m avg rate is 185756.58 in 30 mins

2024-02-06 18:20:30 30m avg rate is 186319.73 in 30 mins

2024-02-06 18:50:36 30m avg rate is 185781.55 in 30 mins

2024-02-06 19:20:42 30m avg rate is 185398.37 in 30 mins

2024-02-06 19:50:47 30m avg rate is 184992.68 in 30 mins

2024-02-06 20:20:53 30m avg rate is 186110.91 in 30 mins

2024-02-06 20:50:58 30m avg rate is 185662.83 in 30 mins

2024-02-06 21:21:04 30m avg rate is 185537.26 in 30 mins

2024-02-06 21:51:09 30m avg rate is 185441.22 in 30 mins

2024-02-06 22:21:15 30m avg rate is 185438.58 in 30 mins

2024-02-06 22:51:20 30m avg rate is 185705.44 in 30 mins

2024-02-06 23:21:26 30m avg rate is 185864.37 in 30 mins

2024-02-06 23:51:32 30m avg rate is 185462.53 in 30 mins

2024-02-07 00:21:37 30m avg rate is 185922.18 in 30 mins

2024-02-07 00:51:43 30m avg rate is 186544.18 in 30 mins

2024-02-07 01:21:48 30m avg rate is 185085.67 in 30 mins

2024-02-07 01:51:54 30m avg rate is 185837.57 in 30 mins

2024-02-07 02:22:00 30m avg rate is 185678.73 in 30 mins

2024-02-07 02:52:06 30m avg rate is 186086.71 in 30 mins

2024-02-07 03:22:12 30m avg rate is 186178.49 in 30 mins

2024-02-07 03:52:17 30m avg rate is 185861.91 in 30 mins

2024-02-07 04:22:23 30m avg rate is 186047.11 in 30 mins

2024-02-07 04:52:28 30m avg rate is 185717.62 in 30 mins

2024-02-07 05:22:34 30m avg rate is 185884.47 in 30 mins

2024-02-07 05:52:40 30m avg rate is 185802.85 in 30 mins

2024-02-07 06:22:46 30m avg rate is 185773.05 in 30 mins

2024-02-07 06:52:52 30m avg rate is 186103.76 in 30 mins

2024-02-07 07:22:57 30m avg rate is 185525.24 in 30 mins

2024-02-07 07:53:02 30m avg rate is 185950.26 in 30 mins

2024-02-07 08:23:09 30m avg rate is 185605.11 in 30 mins

2024-02-07 08:53:15 30m avg rate is 185564.06 in 30 mins

2024-02-07 09:23:20 30m avg rate is 186006.91 in 30 mins

2024-02-07 09:33:02 chain avg vol drop to 0.95
2024-02-07 09:33:14 chain avg vol rise to 20.68
2024-02-07 09:33:21 entrance_temp = 33, work_vol = 2040, curr_vol = 2040, ->tgt_volt = 2050

2024-02-07 09:33:21 set_voltage_by_steps to 2050.

2024-02-07 09:33:50 entrance_temp = 30, work_vol = 2040, curr_vol = 2050, ->tgt_volt = 2061

2024-02-07 09:33:50 set_voltage_by_steps to 2061.

2024-02-07 09:34:22 entrance_temp = 27, work_vol = 2040, curr_vol = 2061, ->tgt_volt = 2071

2024-02-07 09:34:22 set_voltage_by_steps to 2071.

2024-02-07 09:35:01 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 09:35:01 set_voltage_by_steps to 2082.

2024-02-07 09:38:00 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 09:38:00 set_voltage_by_steps to 2072.

2024-02-07 09:38:03 set_voltage_by_steps to 2071.

2024-02-07 09:38:22 chain 0 hash rate 29359.00 low in 15 mins
2024-02-07 09:38:22 chain 1 hash rate 29306.00 low in 15 mins
2024-02-07 09:38:22 chain 2 hash rate 29159.00 low in 15 mins
2024-02-07 09:38:22 chain 3 hash rate 29230.00 low in 15 mins
2024-02-07 09:39:10 entrance_temp = 30, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2061

2024-02-07 09:39:10 set_voltage_by_steps to 2061.

2024-02-07 09:40:17 entrance_temp = 27, work_vol = 2040, curr_vol = 2061, ->tgt_volt = 2071

2024-02-07 09:40:17 set_voltage_by_steps to 2071.

2024-02-07 09:41:03 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 09:41:03 set_voltage_by_steps to 2082.

2024-02-07 09:43:14 chain avg vol drop to 1.02
2024-02-07 09:43:27 chain avg vol rise to 21.13
2024-02-07 09:45:09 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 09:45:09 set_voltage_by_steps to 2072.

2024-02-07 09:45:11 set_voltage_by_steps to 2071.

2024-02-07 09:46:21 entrance_temp = 30, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2061

2024-02-07 09:46:21 set_voltage_by_steps to 2061.

2024-02-07 09:47:19 entrance_temp = 27, work_vol = 2040, curr_vol = 2061, ->tgt_volt = 2071

2024-02-07 09:47:19 set_voltage_by_steps to 2071.

2024-02-07 09:47:59 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 09:47:59 set_voltage_by_steps to 2082.

2024-02-07 09:49:03 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 09:49:03 set_voltage_by_steps to 2092.

2024-02-07 09:50:52 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 09:50:52 set_voltage_by_steps to 2082.

2024-02-07 09:52:07 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 09:52:07 set_voltage_by_steps to 2072.

2024-02-07 09:52:10 set_voltage_by_steps to 2071.

2024-02-07 09:53:25 avg rate is lower than ideal rate, 58528.60 in 30 mins

2024-02-07 09:53:25 30m avg rate is 58528.60 in 30 mins

2024-02-07 09:53:25 chain 0 hash rate 0.00 low in 15 mins
2024-02-07 09:53:25 chain 1 hash rate 0.00 low in 15 mins
2024-02-07 09:53:25 chain 2 hash rate 0.00 low in 15 mins
2024-02-07 09:53:25 chain 3 hash rate 0.00 low in 15 mins
2024-02-07 09:54:50 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 09:54:50 set_voltage_by_steps to 2082.

2024-02-07 09:55:52 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 09:55:52 set_voltage_by_steps to 2092.

2024-02-07 09:57:52 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 09:57:52 set_voltage_by_steps to 2082.

2024-02-07 09:59:07 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 09:59:07 set_voltage_by_steps to 2072.

2024-02-07 09:59:10 set_voltage_by_steps to 2071.

2024-02-07 10:01:44 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 10:01:44 set_voltage_by_steps to 2082.

2024-02-07 10:02:42 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 10:02:42 set_voltage_by_steps to 2092.

2024-02-07 10:04:50 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 10:04:50 set_voltage_by_steps to 2082.

2024-02-07 10:06:05 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 10:06:05 set_voltage_by_steps to 2072.

2024-02-07 10:06:08 set_voltage_by_steps to 2071.

2024-02-07 10:08:45 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 10:08:45 set_voltage_by_steps to 2082.

2024-02-07 10:09:41 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 10:09:41 set_voltage_by_steps to 2092.

2024-02-07 10:11:52 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 10:11:52 set_voltage_by_steps to 2082.

2024-02-07 10:13:05 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 10:13:05 set_voltage_by_steps to 2072.

2024-02-07 10:13:07 set_voltage_by_steps to 2071.

2024-02-07 10:15:42 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 10:15:42 set_voltage_by_steps to 2082.

2024-02-07 10:16:40 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 10:16:40 set_voltage_by_steps to 2092.

2024-02-07 10:18:43 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 10:18:43 set_voltage_by_steps to 2082.

2024-02-07 10:19:58 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 10:19:58 set_voltage_by_steps to 2072.

2024-02-07 10:20:01 set_voltage_by_steps to 2071.

2024-02-07 10:22:40 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 10:22:40 set_voltage_by_steps to 2082.

2024-02-07 10:23:31 avg rate is lower than ideal rate, 0.00 in 30 mins

2024-02-07 10:23:31 30m avg rate is 0.00 in 30 mins

2024-02-07 10:23:34 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 10:23:34 set_voltage_by_steps to 2092.

2024-02-07 10:25:37 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 10:25:37 set_voltage_by_steps to 2082.

2024-02-07 10:26:52 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 10:26:52 set_voltage_by_steps to 2072.

2024-02-07 10:26:55 set_voltage_by_steps to 2071.

2024-02-07 10:29:33 entrance_temp = 24, work_vol = 2040, curr_vol = 2071, ->tgt_volt = 2082

2024-02-07 10:29:33 set_voltage_by_steps to 2082.

2024-02-07 10:30:28 entrance_temp = 21, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2092

2024-02-07 10:30:28 set_voltage_by_steps to 2092.

2024-02-07 10:32:33 entrance_temp = 24, work_vol = 2040, curr_vol = 2092, ->tgt_volt = 2082

2024-02-07 10:32:33 set_voltage_by_steps to 2082.

2024-02-07 10:33:48 entrance_temp = 27, work_vol = 2040, curr_vol = 2082, ->tgt_volt = 2071

2024-02-07 10:33:48 set_voltage_by_steps to 2072.

2024-02-07 10:33:51 set_voltage_by_steps to 2071.

Tnx

[BitMaxz]

Now I see all failed and errors pointed to voltage and yes possible this is a PSU issue.

Is the unit plugged directly into the wall outlet or did you use an extension?
If you are using an extension it might be the cause of your problem because the extension outlet you have can't provide enough power. So try to plug the unit directly into the wall outlet.
Also, check the power cords if it's plugged properly or better replug them, and then test them again.

If not, for a temporary solution would you mind to try if you can run the unit at low power mode you can usually find it under pool configuration. If it works without this voltage error keep running it at LPM but if the issue still persists you don't have other choice but to replace the PSU.

[NotFuzzyWarm]

@OP PSU's do not care about phasing, only devices directly generating motion from 3-phase power eg motors care.

[Beny44]

Now I see all failed and errors pointed to voltage and yes possible this is a PSU issue.

Is the unit plugged directly into the wall outlet or did you use an extension?
If you are using an extension it might be the cause of your problem because the extension outlet you have can't provide enough power. So try to plug the unit directly into the wall outlet.
Also, check the power cords if it's plugged properly or better replug them, and then test them again.

If not, for a temporary solution would you mind to try if you can run the unit at low power mode you can usually find it under pool configuration. If it works without this voltage error keep running it at LPM but if the issue still persists you don't have other choice but to replace the PSU.

The miner is connected by a 4x4 mm cable directly to the substation with a short cable 4x4 again to the circuit breaker. I don't think it's in the wiring, but the cause may be a voltage drop in the mains.
I'll take some measurements and see.
Today the miner has held for 28 hours straight without a failure.
I'll figure out some automation via Home assistant to restart the miner. Too bad Braiins for Hydro version is not out anymore. There is an integration to monitor the status of the miner and it is easy to restart it directly from HA.
So far I'm trying to connect Node red via HTTP request to the Braiins pool API, but even though node is connected I can't download any data about my miner yet.
However, I can see the data in the browser
Thank you for trying to help me

Translated with www.DeepL.com/Translator (free version)

[mikeywith]

As NFW said, phase sequence doesn't matter here, however, phase failure does, if one of the phases fails the miner stops, also, you need to take a good measurement of your phase-to-phase voltage, it needs to be 342~418V for the miner to operate correctly, I don't know much about electricity complication in the U.S, but in EU and most of the world you know this by measuring the potential difference between each two live wires.

The miner is connected by a 4x4 mm cable directly to the substation with a short cable 4x4 again to the circuit breaker. I don't think it's in the wiring, but the cause may be a voltage drop in the mains.
I'll take some measurements and see.

4mm2 is more than enough for the 10amps the S19 hydro uses, so it's unlikely that you are facing a voltage drop caused by the resistance in the wire, but it's likely a drop in your input voltage, it's would be near impossible to figure out if that indeed is the case given that your miner does run fine for a while, you would need to sit there with your tools measuring the power all day long hopping to see if that is the case.

What I would do is get a 3-phase voltage monitor/control relay, something like this

https://tense.com.tr/en/products/digital-adjustable-three-phase-over-and-under-voltage-control-relay-dgk-04/

You need it to be 3 phase (and has no RT / Reset function), so that when it trips -- it doesn't automatically turn back on.

Set the minimum voltage to 360V and the max to 420v, if you come back home and the relay is shutdown it means there was indeed a voltage drop from the mains, obviously you don't want to connect this straight to the miner, just run 3 wires from the same breaker to it, later on if you want to connect it to the miner to protect it you are going to need a contactor (20A 3P) controlled by the phase protection relay which then controls the miner.

[Beny44]

What I would do is get a 3-phase voltage monitor/control relay, something like this

https://tense.com.tr/en/products/digital-adjustable-three-phase-over-and-under-voltage-control-relay-dgk-04/

You need it to be 3 phase (and has no RT / Reset function), so that when it trips -- it doesn't automatically turn back on.

Set the minimum voltage to 360V and the max to 420v, if you come back home and the relay is shutdown it means there was indeed a voltage drop from the mains, obviously you don't want to connect this straight to the miner, just run 3 wires from the same breaker to it, later on if you want to connect it to the miner to protect it you are going to need a contactor (20A 3P) controlled by the phase protection relay which then controls the miner.

Thank you for your responses.

I did need confirmation from you more experienced ones that it may be a voltage drop if I have ruled out other possible variables.

I have experience with measuring variables and storing them in a database with my projects around a photovoltaic power plant. I use a UNIPI PLC and EM340DIN-AV23X-S1X meters connected via Modbus. So I won't have to sit at home at the power supply all day :-)

But I have another idea. I'm connected to the Braiins pool, it has its API. Even though I've gone through all their instructions from the home assistant I can't get the right data, whether the miner is running or not.
But I am getting the data in the PC browser.
When Braiins OS will be also for hydro version S19 everything will be OK, there is already an integration in HA that can read the data with Braiins OS. Then automation can be built easily in HA.

Of course, with metering and tripping via contactor I will achieve mine too, just via sowtware would be more elegant.

Thanks again for the discussion.

Translated with www.DeepL.com/Translator (free version)

[Beny44]

One more addition.
Today I was doing a broadcast channel change on the AP WiFi and had to restart it. Miner is connected to the switch not directly to the access point. So it pretended that the LAN was fine.
During the AP reboot the internet was down, but the LAN was working.
Miner dropped out, no message about lost connection, but dropped again chaine about voltage.
Thus, I think all the problems are caused by a stable but slow line to the internet.
Instead of measuring the voltage on the phases I will measure the data flows to the web :-)