2)L.E.D. (light emitting diode) and Neon Displays of the BCM (Burner Controller Module)
a)Operating Interlock - L.E.D. (light emitting diode) is lit when:
ALL safety interlock switches are closed applying a 120 VAC signal to terminal #7 of the burner controller module (BCM).
b)Operating Interlock - L.E.D. (light emitting diode) is not lit when:
One or more safety interlock switches are open. If any safety interlocks switch is open the burner ignition sequence will not be attempted.
c)Air Failure - L.E.D. (light emitting diode) is lit if:
•Air switch is not closed within 10 seconds of
•Air switch is open during firing cycle.
d)System Unsafe - L.E.D. (light emitting diode) is lit if:
•A dryer safety device, connected in series with terminal #7, is opened. These safety devices include the door switches, tilt switches, tumbler (basket) stop motion detector, high temperature limit switches, airflow switches, and high or low gas pressure switch.
•A loose connection on the flame rod or spark plug.
•ALL purge time dip switches are in the off position.
•Flame is detected out of sequence.
•Inductance (H) is detected on sensor wires.
•Wiring fault on terminal #3, terminal #4, and terminal #5.
•Internal controller failure.
•Air switch closed before
e)Flame Signal - L.E.D. (light emitting diode) is lit when:
The flame rod is in contact with the pilot flame and the BCM (burner controller module) converts a microampere (μ) current between the flame rod and ground into a 3 volt DC to 11 volt DC signal that can be measured on the BCM. Insert one (1) probe of a DC volt meter into the flame signal port and put the other probe to ground. The meter will read out the 3 volt DC to 11 volt DC flame signal. If the flame signal L.E.D. (light emitting diode) flickers on and off, this is a result of a weak flame signal which can be caused by an intermittent wiring connection between the flame rod and the BCM, a faulty ground connection, bad ground of the dryer, weak pilot flame, and dirty or defective flame rod.
f)Burner Controller Power On Indicator - Neon is lit when; Burner controller has its supply voltage of 120 VAC.
g)Burner for Air Switch Status Indicator - Neon is lit when;
Air switch is closed after
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