Open-Source Troubleshooting Guide

201 error codes and fixes for Open-Source ASIC miners.

Manufacturer

Severity

DIY Difficulty

201 results

Immersion Fluid Temp Creep from Undersized Heat Exchanger

Single-phase immersion tanks rejecting heat through a fluid-to-air dry cooler or a...

VPN Breaks Pool Stratum Handshake

All miners on a home VPN — Bitaxe (Supra/Ultra/Hex/Gamma/GT/Max), NerdAxe, NerdQAxe, NerdMiner,...

Braiins Farm Proxy SV2 Upgrade Handshake Fail

Multi-miner farms running Braiins Farm Proxy in front of a mixed fleet...

PSU Crowbar OVP Latched — How to Reset

Cross-cutting: all ASIC + Bitaxe PSUs with crowbar-class OVP. Includes Bitmain APW3++/APW7/APW9/APW9+/APW12;...

Mean Well HLG Constant-Current Mode Wrong for Bitaxe

Mean Well HLG-60H, HLG-80H, HLG-100H, HLG-120H, HLG-150H, HLG-185H, HLG-240H, HLG-320H, HLG-480H, HLG-600H...

Nerd Family – WiFi IPv6-Only Network Connection Fail

All ESP32 / ESP32-S3-based open-source miners on an IPv6-only LAN — NerdMiner...

Nerd Family – ESP32-S3 PSRAM Not Detected

NerdQAxe, NerdQAxe+, NerdQAxe++, NerdOctaxe, and any community Nerd-family board built around an...

Nerd Family – europe.pool.ntp.org Blocked by Firewall

All Nerd-family / Bitaxe-family ESP32 / ESP32-S3 miners deployed in the EU:...

Nerd Family – Flash Encryption eFuse Burn Blocks Reflash

All ESP32-S3 Nerd / Bitaxe variants: Bitaxe Supra, Ultra, Hex, Gamma, GT,...

PiAxe – Pool Authorization Password Rejected

PiAxe (Raspberry Pi Zero 2 W / 3 / 4 / 5...

PiAxe – Hashrate Below 400 GH/s Target

PiAxe (Raspberry Pi HAT carrying a single `BM1366` ASIC, 76 cores) on...

NerdMiner – Pool Connection Retries Exhausted

NerdMiner v2 — every variant (LilyGO T-Display-S3, T-Dongle-S3, T-QT, ESP32-S3 reference, ESP32-WROOM-32,...

NerdMiner – Serial Output Garbled / Wrong Baud Rate

All NerdMiner v2 supported boards: LilyGo T-Dongle-S3, LilyGo T-Display S3, LilyGo T-QT...

NerdMiner – Reset Button 5-Second Hold Not Working

NerdMiner v2 across every supported variant - LILYGO T-Display S3, LILYGO T-Dongle...

NerdMiner – NTP Time Wrong / Daylight Saving

NerdMiner v2 — all variants. LILYGO TTGO T-Display (ESP32 + ST7789), LILYGO...

NerdAxe – WiFi Credentials Case Sensitivity Fail

NerdAxe (BM1366 + ESP32-S3). Applies to all NerdAxe board revisions running the...

Bitaxe – Pool Difficulty Shows Decimal 12-Digit Precision Bug

All Bitaxe variants (Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, Max)...

Bitaxe – Accidental Factory Reset via Web Interface

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex (all ESP-Miner /...

Bitaxe – Port 80 Blocked by Firewall / VPN

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, UltraHex, Max (all...

Bitaxe – WiFi AP Client Isolation Blocking Device Access

Every Bitaxe variant — Supra, Ultra, Gamma, Gamma Turbo / GT, Hex,...

Bitaxe Max – New Firmware Not Yet Supporting Chip

Bitaxe Max — forthcoming next-generation revision (any new BM-series die not yet...

Bitaxe – PSRAM Log Capture Unavailable / Logs Lost

Bitaxe Hex (`v303` / `v304`, 6× `BM1366`) and Bitaxe Gamma Turbo /...

Bitaxe – Memory Leak on v2.14 / Daily Reboot Required

All Bitaxe variants running AxeOS v2.14.0, v2.14.1, v2.14.2, v2.14.3, or v2.14.4 —...

Bitaxe – Power/ASIC Temp/Input Voltage Not Showing in Dashboard

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma 601/602 (BM1370), Bitaxe Gamma...

Bitaxe – Voltage Change Not Persisting After Reboot

Bitaxe Supra (board 401, BM1368), Bitaxe Ultra (boards 202/204/205/207, BM1366), Bitaxe Gamma...

Bitaxe – Frequency Change Not Applied / Stuck at Stock

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma (BM1370), Bitaxe GT (dual...

Bitaxe – Hashrate Fluctuating Wildly Minute-to-Minute

Bitaxe Supra, Ultra, Gamma, Gamma Turbo (GT), Hex — every BM136x /...

Bitaxe – Ambient Too High / Summer Temps Spike

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma 601/602 (BM1370), Bitaxe GT...

Bitaxe – Heatsink Loose / Poor ASIC Contact

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma 601/602 (BM1370), Bitaxe GT...

Bitaxe – Fan RPM Reads Zero Despite Spinning (Tach Fault)

Bitaxe Supra, Bitaxe Ultra, Bitaxe Gamma, Bitaxe GT, Bitaxe Hex (all current...

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Last reviewed May 8, 2026.