American Dryer Corp ML-78II Procedure for Functional Check Replacement Components

SECTION IX

PROCEDURE FOR FUNCTIONAL CHECK

OF REPLACEMENT COMPONENTS

1.For Models With Hot Surface Ignition (HSI) Module (CE Version)

a. Upon completing installation of the replacement HSI module, reestablish power to the dryer.

b. The HSI module’s “red” indicator light will light for up to approximately 5-seconds (self check routine). If the HSI module’s “red” indicator light stays on or flashes continuously, then the HSI module is wired incorrectly or has failed.

c. Start the drying cycle.

d. The HSI will turn on, and after approximately 4-seconds, the ignitor will shut off and the gas valve will be energized. Ignition (flame) should now be established.

e.With the burner flame on, remove the flame sensor wire from the S2 terminal of the HSI module. The burner flame must shut off immediately.

f.Stop the drying cycle, with the flame sensor wire still removed, restart the drying cycle.

g.The HSI will turn on, and after a few seconds later, the gas valve will be energized and the HSI will shut off. Ignition (flame) should be evident for approximately 7-seconds and then shut off.

h.The HSI module will attempt to light burner only “once.” If flame is not reestablished the HSI module will lockout and the “red” indicator light will flash continuously.

i.Functional check of the HSI module is complete.

1)Replace the flame sensor wire from the S2 terminal to the HSI module.

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