⚠
warning Nos
Error Code LED blinks 3 times
System detects overheating — internal temperature too high.
? What Causes This
Poor ventilation or fan failure.
✓ How to Fix It
Turn off and cool the unit. Ensure surrounding area is clear of obstructions, then restart.
Source: page 2 of the official manual
From the manual
This error code appears in:
Nos C 450