American Dryer Corp. ML-130 II User Manual

Page 56

e. Open main door. The dryer must stop and ALL indicator dots of the microprocessor controller

(computer) light emitting diode (L.E.D.) display must go out. (Refer to the illustration on page
50.)

f. Try to restart the dryer with the main door open.

g. The microprocessor controller (computer) board's L.E.D. display must read “MAIN dOOR."

h. Close the main door and restart the dryer.

Functional check of microprocessor controller (computer) board is complete.

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

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

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.

Functional check of the HSI module is complete.

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