American Dryer Corp ML-310 Phase 7 service manual First Visual Check

d. Troubleshooting Flowchart - Quick Reference...

First Visual Check

(Does Ignitor Spark?)

Computer/Timer Calls For Heat

Is spark evident (on)			Is 24 Volts
			present across DSI Module
		No
at Ignitor Assembly?			terminals
			TH and COM?
				Yes
	Yes

Open circuit to DSI System.

No Check the 24 VAC power source Sail Switch and Hi-Limit.

Go To Chart 2

Replace the DSI Module. Energize system and check for proper operation.

Check

High Voltage (HV) Lead for nicks or cracking,

where sparking to ground may

occur. Is this wire

damaged?

No

Visually

inspect Spark

Electrode Assembly. Is ceramic cracked or Spark Electrode incorrectly gapped?

No

Visually

inspect High

Voltage (HV) Wire

connections at both DSI Module

and Ignitor Assembly.

Are connections

secure?

Yes

Remove

High Voltage (HV) Wire from

Yes DSI Module and visually inspect. Is conductor

visible at end of

HV Wire?

	Repair or replace HV Lead
Yes	Assembly.
	Energize system and check
	for proper operation.

	If	cracked, replace Electrode
		Assembly. Correct gap size
	is 1/8" +/- 1/32" (3.175 mm +/-
Yes
	0.79248 mm).
	Energize system and check
	for proper operation.

1.At DSI Ignitor Assembly be sure HV Wire is secure in the boot as well as the connection to the Ignitor

Probe Assembly.

No 2. At DSI Module, center the end of the HV Wire with a Spike Terminal. Energize system and check for proper operation.

Cut the end off of the HV Wire 1/4" at a time until conductor becomes visible and is flush with the insulation.

No Reconnect the HV Wire to the Spike Terminal on the DSI Module.

Energize system and check for proper operation.

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