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e. Open main door. The dryer must stop and ALL output indicator lights on the back side of the
microprocessor (computer) board must go out. (Refer to illustration on previous page [page 72].)
f. Try to restart the dryer with the main door open.
g. The microprocessor (computer) board’s L.E.D. display must read “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 be 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 (Hot Surface Ignition) 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.