ADC AD-410 service manual ADC Direct Spark Ignition DSI Operation Flow Chart

h. ADC Direct Spark Ignition (DSI) Operation Flow Chart

Computer/Timer Calls For Heat

Power

Applied to the

DSI Module

DSI Module Indicator lights "RED" for up to approximately 1.3 seconds (prepurge).

DSI Module

Internal Check

DSI Module Indicator lights "GREEN", Gas Valve opens and spark bursts for approximately 8 seconds.

Open and close the Main Door...

restart the dryer.

Flame

Confirmed?

DSI Module "LOCK-OUT" Indicator lights "RED".

		No
Yes
		Flame	Yes
DSI Module Indicator light		Confirmed?
remains "GREEN".
Normal Heating Cycle	Established	DSI Module will immediately
	Flame Lost	attempt to re-light burner.
	3 0