B&R ECNT43-0 Channel input module

Following the minimum 30 second delay (to permit the firing rate motor to get to the low fire position), the control will wait for the low fire switch (M-D) to close. When it closes, the trial for ignition sequence will start. If after ten minutes, the M-D circuit is not closed, the control will lockout unless selected to wait indefinitely.The trial for ignition period begins with Terminals 5, 6 and W being energized simultaneously

Unless otherwise selected this period is ten seconds in duration. 

Terminal W will de-energize after 5 seconds. Refer to PTFI*MTFI TIMINGS to determine times selected or timings appropriate for the application. The test meter jacks on the YB110 (YB230) will provide an indication of the flame signal strength. The flame signal readout is also available on the alpha-numeric display.Normal Shutdown 1. When the operating control circuit (L1-3) opens, the main fuel valve is de-energized. The firing rate motor is driven to the low purge position (10-12 circuit made). 2. Following a 15 second post purge, the burner/blower motor is de-energized.

Common problem

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