ADC AD-410 service manual

NOTE: To reset the dryer when a "HEATER FAULT" occurs, press the ("amber") "HEATER FAULT" reset push-button.

3)Air Turbulence

If there is sail switch flutter due to air turbulence, or improper impellor (fan/blower) rotation, or a restriction in the exhaust duct work, the DSI (Direct Spark Ignition) module will cycle erratically. This in turn might cause the DSI module to "LOCK-OUT" (where the L.E.D. [light emitting diode] indicator will LIGHT "RED" CONTINUOUSLY).

a)If air turbulence causes the flame to move away from the flame probe electrode (of the ignitor/ flame-probe assembly), or if the flame goes out completely during the heat (flame) cycle, the DSI (Direct Spark Ignition) module will attempt to reestablish a flame by going into a re-ignition cycle.

4)Direct Spark Ignition (DSI) Module

If there is some sort of operational interference in the DSI system, the DSI (Direct Spark Ignition) module (acting as the "controller" for the system) will go into a "LOCK-OUT" mode (where the L.E.D. [light emitting diode] indicator will LIGHT "RED" CONTINUOUSLY).

a)Operational interference is any adverse condition (whether internal or external) to the system. (Electrical noise is considered external noise interference because it can cause the DSI [Direct Spark Ignition] module to cycle erratically.)

NOTE: To reset the dryer when a "HEATER FAULT" occurs, press the ("amber") "HEATER FAULT" reset push-button.

If the GAP, the ALIGNMENT, and the POSITION of the ignitor and flame-probe assembly are correct, if the gas flow and pressure is constant and consistent; if there is no adverse air turbulence; and if the DSI (Direct Spark Ignition) module remains in the "LOCK-OUT" mode (where the L.E.D. [light emitting diode] indicator will LIGHT "RED" CONTINUOUSLY) then, there is a malfunction with the DSI module itself, and it must be replaced.

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