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e. Open main door. The dryer must stop and ALL indicator lights on the backside of the microprocessor
(computer) board must go out.
f. Try to restart the dryer with the main door open.
g. The microprocessor (computer) board’s LED 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. 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 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 trails 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.