JLA D90, Руководство по установке

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32 JLA Limited 113374 - 4
SECTION VIII
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS
1. For Heat Control Module Ignition Circuit
a. For Models With Johnson Controls Direct Spark Ignition (DSI) Module (G760)
Theory Of Operation:
Start the drying cycle. When the gas burner ignites within the
chosen trial for ignition time (6-seconds), the flame sensor detects
gas burner flame and signals the DSI module to keep the gas
valve open as long as there is a call for heat. The DSI module
will “LOCKOUT” if the gas burner flame is not sensed at the
end of the trial for ignition period. The trial for ignition period will
be repeated for a total of three (3) retries/trials (the initial try and
two [2] more retries/trials). If the flame is not sensed at the end
of the third retry/trial (inter-purge period of 30-seconds) the DSI
module will “LOCKOUT” (light emitting diode [L.E.D.] flashes).
A steady L.E.D. indicator indicates normal operation .
No L.E.D. indicator indicates a power or an internal failure has occurred.
b. For Models With Hot Surface Ignition (HSI) Module
1) Start the drying cycle.
2) 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.
3) 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.
4) Stop the drying cycle, with the flame sensor wire still removed, restart the drying cycle.
5) 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.
6) 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.
7) Functional check of the HSI module is complete.
Replace the flame sensor wire from the S2 terminal to the HSI module.