American Dryer Corp. AD-400 User Manual
Page 45
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If all safety switches are closed, the BCM will start the burner fan motor (BCM terminal no. 8).
The BCM waits 10 seconds to allow the blower motor to get up to sjjeed, and then checks that the burner
fan combustion air switch (BCM Terminal No. 6) circuit is closed. If this circuit is open during the drying
cycle, the "Air Failure" LED will light. The gas valve will close, and a "HEATER FAULT" message will
be displayed.
In order to prevent this air switch from being jumped out, the BCM checks to insure that this circuit is
open prior to startup, closed during operation, and open again after shutdown. If the airflow switch is
closed prior to startup, then, the "system unsafe" LED will light.
BURNER CONTROL MODULE
TYPICAL WIRING
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