Both my HW error and Reject rate are high/higher than 5%, what should I do?

Please try to solve the high reject rate issue first by following the steps below:

1. Restart your miner and keep monitoring it;
2. Check your network, switch network or net cable;
3. Switch pool and make sure the pool matches to the coin you are mining.

Regarding the high HW error:

• If you have never encountered high hardware error with this miner before, please check your firmware version. If version is not the latest, please update it. This link would help https://www.goldshell.com/upgrade-firmware/.
• In case the firmware was upgraded and the high hardware error appears, please downgrade it back to the original version.
• You can switch another power supply if you have one to test.
• If the above solutions don’t work for your miner, please click here to submit after-sale supprt request.