Antminer T21 – Temperature Too High
Critical — Immediate action required
Symptoms
- Auto shutdown due to overheating
- Hashboard temps above 90°C
- Fan speed maxed out
Step-by-Step Fix
Power off immediately and wait for cooling.
Blow out all dust with compressed air.
Verify room temperature is below 35°C.
Check and replace any failed fans.
Inspect and reapply thermal paste if dried.
Related Error Codes
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