As you use your Pro, you'll see different colored lights on the LED indicator towards the middle of the unit. Here's what each one means:
SOLID WHITE
Your Pro is currently idle (it's plugged in, but not running).
PULSING BLUE
Your Pro is warming up to the desired temperature you've selected.
SOLID BLUE
Your Pro has reached the desired temperature you've selected.
FLASHING RED
Your Pro has experienced an error (see here for more information).
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