After the reinstall I hadn't rebooted it and it wasn't running, so I rebooted it, now the temps look normal and the kernel log says this. I guess I'll see how long it runs for...

2021-09-07 16:04:14 power_api.c:219:set_working_voltage_raw: working_voltage_raw = 1800
2021-09-07 16:04:15 temperature.c:281:calibrate_temp_sensor_one_chain: Temperature sensor calibration: chain 0 success.
2021-09-07 16:04:17 temperature.c:281:calibrate_temp_sensor_one_chain: Temperature sensor calibration: chain 1 success.
2021-09-07 16:04:18 temperature.c:281:calibrate_temp_sensor_one_chain: Temperature sensor calibration: chain 2 success.
2021-09-07 16:04:18 uart.c:71:set_baud: set fpga_baud to 6000000
2021-09-07 16:04:20 driver-btm-api.c:245:check_bringup_temp: Bring up temperature is 28
2021-09-07 16:04:20 thread.c:798:create_check_miner_status_thread: create thread
2021-09-07 16:04:20 thread.c:788:create_set_miner_status_thread: create thread
2021-09-07 16:04:20 thread.c:773:create_temperature_monitor_thread: create thread
2021-09-07 16:04:20 frequency.c:749:inc_freq_with_fixed_vco: chain = 255, freq = 565, is_higher_voltage = true
2021-09-07 16:04:20 power_api.c:287:set_to_voltage_by_steps: Set to voltage raw 2020, step by step.
2021-09-07 16:04:38 power_api.c:87:check_voltage_multi: retry time: 0
2021-09-07 16:04:39 power_api.c:37:_get_avg_voltage: chain = 0, voltage = 20.108086
2021-09-07 16:04:40 power_api.c:37:_get_avg_voltage: chain = 1, voltage = 20.089717
2021-09-07 16:04:41 power_api.c:37:_get_avg_voltage: chain = 2, voltage = 20.101963
2021-09-07 16:04:41 power_api.c:50:_get_avg_voltage: average_voltage = 20.099922
2021-09-07 16:04:41 power_api.c:68:check_voltage: target_vol = 20.20, actural_vol = 20.10, check voltage passed.
2021-09-07 16:05:11 power_api.c:287:set_to_voltage_by_steps: Set to voltage raw 1880, step by step.
2021-09-07 16:05:31 power_api.c:87:check_voltage_multi: retry time: 0
2021-09-07 16:05:32 power_api.c:37:_get_avg_voltage: chain = 0, voltage = 18.730400
2021-09-07 16:05:34 power_api.c:37:_get_avg_voltage: chain = 1, voltage = 18.656924
2021-09-07 16:05:35 power_api.c:37:_get_avg_voltage: chain = 2, voltage = 18.693662
2021-09-07 16:05:35 power_api.c:50:_get_avg_voltage: average_voltage = 18.693662
2021-09-07 16:05:35 power_api.c:68:check_voltage: target_vol = 18.80, actural_vol = 18.69, check voltage passed.
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 0, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 1, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 2, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 0, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 1, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:801:inc_freq_with_fixed_step: chain = 2, freq_start = 565, freq_end = 565, freq_step = 5, is_higher_voltage = true
2021-09-07 16:05:41 frequency.c:618:inc_asic_diff_freq_by_steps: chain = 0, start = 565, freq_step = 5
2021-09-07 16:05:44 frequency.c:618:inc_asic_diff_freq_by_steps: chain = 1, start = 565, freq_step = 5
2021-09-07 16:05:47 frequency.c:618:inc_asic_diff_freq_by_steps: chain = 2, start = 565, freq_step = 5
2021-09-07 16:05:50 driver-btm-api.c:528:set_timeout: freq = 595, percent = 90, hcn = 73728, timeout = 123
2021-09-07 16:05:50 power_api.c:269:set_to_working_voltage_by_steps: Set to voltage raw 1800, step by step.
2021-09-07 16:06:11 power_api.c:87:check_voltage_multi: retry time: 0
2021-09-07 16:06:12 power_api.c:37:_get_avg_voltage: chain = 0, voltage = 17.897666
2021-09-07 16:06:13 power_api.c:37:_get_avg_voltage: chain = 1, voltage = 17.867051
2021-09-07 16:06:14 power_api.c:37:_get_avg_voltage: chain = 2, voltage = 17.879297
2021-09-07 16:06:14 power_api.c:50:_get_avg_voltage: average_voltage = 17.881338
2021-09-07 16:06:14 power_api.c:68:check_voltage: target_vol = 18.00, actural_vol = 17.88, check voltage passed.
2021-09-07 16:06:14 thread.c:793:create_check_system_status_thread: create thread
2021-09-07 16:06:15 driver-btm-api.c:1988:bitmain_soc_init: Init done!
2021-09-07 16:06:15 driver-btm-api.c:198:set_miner_status: STATUS_INIT
2021-09-07 16:06:19 driver-btm-api.c:198:set_miner_status: STATUS_OKAY
2021-09-07 16:06:20 frequency.c:216:get_ideal_hash_rate_GH: ideal_hash_rate = 54675
2021-09-07 16:06:20 frequency.c:236:get_sale_hash_rate_GH: sale_hash_rate = 53000
2021-09-07 16:06:24 driver-btm-api.c:1199:dhash_chip_send_job: Version num 4