Installation manual

49
2. 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.