American Dryer Corp. MLG-130DR (HSI) - Manual (Page 43)

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12) “Flame” (Burner Control Failure) input L.E.D. indicator
13) “Power Supply”
e. Open main door. The dryer must stop and ALL indicator dots of the microprocessor (computer) L.E.D.
(light emitting diode) display must go out. (Refer to illustration on page 37.)
f. Try to restart the dryer with the main door open.
g. The microprocessor (computer) board’s L.E.D. display must read “MAIN dOOR.”
h. Close the main door and restart the dryer.
i. Functional check of microprocessor (computer) board is complete.
2. Hot Surface Ignition (HSI) System
a. Upon completing installation of the
replacement Hot Surface Ignition
(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 hot surface ignitor will turn on, and a few seconds later the gas valve will be energized. After
approximately 4-seconds the hot surface ignitor will shut off. 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 hot surface ignitor will turn on, and after a few seconds later the gas valve will be energized and the
hot surface ignitor will shut off. Ignition (flame) should be evident for approximately 7-seconds and
then shut off.
h. The HSI module will attempt two (2) additional ignition trials after which the HSI module will lockout 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.