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d. Open main door. The dryer must stop and ALL output indicator lights on the back side of the
microprocessor controller (computer) board must go out. (Refer to the illustration on the previous
page.)
e. Try to restart the dryer with the main door open.
f. The microprocessor controller (computer) board's light emitting diode (L.E.D.) display must read "DOOR."
g. Close the main door and restart the dryer.
h. Functional check of microprocessor controller (computer) board is complete.
c. Start the drying cycle.
d. The Hot Surface Ignitor will turn on. After approximately 4-seconds the hot surface ignitor 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 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 HSI module is complete.
1) Replace the flame sensor wire from the S2 terminal to the HSI module.
2. Hot Surface Ignition (HSI) System
a. Upon completing installation of the
replacement HSI module, reestablish power
to the dryer.
b. The HSI module's "red" indicator light will
light up for 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.