American Dryer Corp. ADG-385 - Manual (Page 50)

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E. "dSFL" Display Condition
When the display reads "dSFL" this condition indicates a fault
in the microprocessor controllers heat circuit. This circuit
includes the microprocessor controller, microprocessor
temperature sensor (located in lint compartment) and wires to
and from these two (2) points.
1. Check to see if microprocessor controller has 1/8 amp fuse
on the board, if it does check with out ohm meter. If no
continuity replace with ADC P/N: 136048. If fuse repeatedly
burns out go to step 4.
2. Check for loose connection at the microprocessor sensor
bracket harness connector (located in lint compartment),
and the microprocessor 15 position connector at the
microprocessor controller.
3. Discontinue power to dryer. Disconnect the microprocessor
15 position connector from microprocessor controller and
locate connector holes no. 10 and 15. Disconnect sensor
harness from sensor bracket assembly (located in the lint
compartment). Check for continuity across each wire from
harness connector in lint compartment to appropriate
microprocessor 15 position connector hole (10 and 15).
If no continuity, problem is break in wire or termination.
4. Check for continuity across each microprocessor sensor
wire (microprocessor 15-position connector hole no. 10
and 15) to ground. If continuity is evident, problem is wire
pinched to ground somewhere behind the front panel area.
5. If above procedures check out okay, problem is a defective
microprocessor temperature sensor.