American Dryer Corp MDG-75 manual

2. Hot Surface Ignition (HSI) System (for Gas Models Only)

a. Upon completing installation of the replacement Hot Surface Ignition (HSI) module, reestablish power to the dryer.

b. The Hot Surface Ignition (HSI) module's "red" indicator light will light up for approximately 5- seconds (self check routine).

If the Hot Surface Ignition (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 hot surface ignitor will turn on. After approximately 4 seconds the Glo Bar will shut off and the gas valve will be energized. The 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 hot surface ignitor will turn on and after approximately 4-seconds the hot surface ignitor will shut off. The gas valve will be energized and a burner flame should be evident for approximately 7-seconds and then shut off.

h.The Hot Surface Ignition (HSI) module will attempt two (2) additional ignition trials after which the HSI module will lock out and the "red" indicator light will flash continuously.

i.Functional check of the Hot Surface Ignition (HSI) Module is complete.

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

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