Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

Page: 113 / 162

The smart sensor system does not communicate to the drive logic board. A flip dot on the smart
sensor board displays black under normal conditions. If the system is triggered, the flip dot
displays red , and opens the circuit breaker. The flip dot does not require power to display.
Reapplying power to the chiller resets the flip dot to black, and the reason the circuit breaker
opened is lost.
The following figures show the black flip dot and the red flip dot in the circled area.
Figure 43: Black flip dot
Figure 44: Red flip dot
WARNING
A tripped circuit breaker is an indication of a serious fault condition, and must never be reset without
an inspection of the drive by certified technician.
113 YVAM Control Center