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48 American Dryer Corp. 113217-5
SECTION IX
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS
1. For Models with Direct Spark Ignition (DSI) Module (Type I)
Theory of Operation:
Start the drying cycle. When the gas burner ignites within the chosen
trial for ignition time (6-seconds), the flame sensor detects gas burner
flame and signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT” if the
gas burner flame
is not sensed at the end of the trial for ignition period.
The trial for ignition period will be repeated for a total of three (3)
retries/trials (the initial try and two [2] more retries/trials). If the flame
is not sensed at the end of the third retry/trial (inter-purge period of
30-seconds), the DSI module will “LOCKOUT” (light emitting diode
[L.E.D.] diagnostic indicator flashes).
A steady L.E.D. indicator indicates normal operation.
No L.E.D. indicator indicates a power or an internal failure has occurred.