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2. For Heat Control Module Ignition Circuit
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.