1.Direct Spark Ignition (DSI) Troubleshooting Terms (definitions) ADC (DSI) Control Module P/N 128973
a.DSI MODULE “RED” L.E.D. INDICATOR LIGHT - This “red” light emitting diode (L.E.D.) light is located in the upper right corner of the DSI module (refer to the top illustration on page 18). This is a diagnostic indicator that simplifies the operational and troubleshooting procedures of the DSI system.
b.LOCKOUT MODE - DSI module “red” L.E.D. indicator light stays on continuously. This indicates there is a system fault and most likely the fault is the DSI module itself.
c.FLAMEOUT - Burner flame shut down by the DSI module due to lack of flame verification. This condition occurs only after ignition is evident but is lost. The DSI system will immediately attempt to relight the burner.
d.RECYCLE - Flame has been sensed but lost. Initiate a new sequence (THERE ARE NO RETRIES).
2.Troubleshooting and System Basic Diagnosis ADC (DSI) Control Module P/N 128973
a.Preliminary Steps
The following steps must be performed to minimize the time required to isolate cause of fault.
1)DSI module L.E.D. indicator light is off (no “red” or “green” light).
a)Check for voltage (approximately 24 VAC) across the DSI model terminals “TH” and “GND”...
If voltage (approximately 24 VAC) is evident, then, there is a malfunction within the DSI module itself, and it must be replaced.
If there is no voltage present, then problem is not the DSI module or the ignition system, the problem is elsewhere in the dryer (i.e., dryer’s heat circuit [sail switch,
2)DSI module L.E.D. indicator lights “red” for approximately
3)DSI module L.E.D. indicator lights “green.” This indicates a normal heating cycle. This also indicates that the preliminary diagnostics of the module has confirmed that the DSI module is functional.
4)DSI module L.E.D. indicator lights “red” continuously...“LOCKOUT MODE.” This indicates that there is a system fault and most likely the fault is internal to the DSI module. To make sure, open and close the main door. Restart the dryer...if the module LOCKS OUT (“red” L.E.D. indicator light stays on continuously) again, replace the DSI module.
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