The air intakes on the top of both the DSTREAM-ST unit and Parallel Trace probe, in a powered-up DSTREAM-PT system, must remain clear.
Air intakes are blocked
If the air intake on the top of the DSTREAM-ST unit become blocked and the DSTREAM-ST unit overheats, it shuts down, all the LEDs turn off, and it remains in a safe state.
If the air intake on the top of the Parallel Trace probe become blocked and the Parallel Trace probe overheats, it enters a low-power mode and all of its LEDs flash red.
To re-initialize the DSTREAM-PT system, press the reset button on the rear of the DSTREAM-ST unit.