American Dryer Corp. Phase 6 Microprocessor Controls ML-190HS User Manual

Page 56

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If no voltage is present, check voltage at pin 5 and 8 of the J2 connector. Which is located in the front

electrical box. If voltage is present then problem is a broken wire between 9 pin connector and HSI (Hot

Surface Ignition) module or faulty termination.

If no voltage is present, then there is a broken wire between computer and 9 pin connector or faulty

termination.

F. “No Heat” drive and blower motors run, display reads normal (Steam Models)...

1. Check for voltage across pin 1 and 2 of the J6 connector.

If no voltage is present, check for voltage on the J10 pin 5 to ground.

2. If voltage is present, problem is a faulty wire or termination. Between pin 5 of the J10 connector to pin 1

of J6 connector.

If no voltage is present, problem is computer board.

G. “Lint Door” condition...

NOTE: Make sure lint drawer is closed. Also, if checking the switch, the plunger must be depressed.

Check L.E.D. (light emitting diode) input light “lint door” on component side of the computer. If light is on,

replace computer.

1. Check voltage (24 VAC) across 2 pin connector, pin 3 and ground. This connector is located at the lint

drawer switch box.

If voltage is present, problem is faulty wire(s) or termination(s) between computer pin #4 of 9 pin connector.

If no voltage is present, check for voltage across the 9 pin modular connector nos. 3 and ground.

If voltage is evident at both points, problem is faulty computer.

H. “Main Door” condition...

NOTE: Make sure main door is closed. Also, if checking the switch, the plunger must be depressed.

Check L.E.D. (light emitting diode) input light “main door” on component side of the computer. If light is

on, replace computer.

1. Check voltage (24 VAC) across 2 pin connector (J5) between pin 1 and ground.

If voltage is present, problem is faulty wire or termination between the 9 pin computer connector pin 6 and

the opposite side of door switch.

If no voltage is present, check for voltage across pin 5 of the 9 pin computer connector and ground.

If there is no voltage at this point then problem is faulty computer.

If there is voltage at this point then problem is broken wire or faulty termination between pin 5 of 9 pin

computer connector and pin 1 of J5 connector.

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