ADC AD-310 - Page 36

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h. ADC Direct Spark Ignition (DSI) Operation Flow Chart
Power
Applied to the
DSI Module
DSI Module "LOCK-OUT"
Indicator lights "RED".
Computer/Timer Calls For Heat
DSI Module will immediately
attempt to re-light burner.
DSI Module Indicator lights
"RED" for up to approximately
1.3 seconds (prepurge).
DSI Module Indicator lights
"GREEN", Gas Valve opens and
spark bursts for approximately
8 seconds.
DSI Module Indicator light
remains "GREEN".
Normal Heating Cycle
Established
Flame Lost
DSI Module
Internal Check
Flame
Confirmed?
Flame
Confirmed?
Yes
Yes
Open and close the Main Door...
restart the dryer.
No