American Dryer Corp. ADG-385 - Manual (Page 51)

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F. "dOOr" Display Condition
When the display reads "dOOr," this indicates that there is a fault (open circuit) somewhere in the
microprocessor controller's door switch circuit. Includes the door switch, microprocessor controller and
the wires to and from these two (2) points. Before following this test procedure, check the component
side of the computer to see if L.E.D. input light is on. If on, replace computer. Voltage is 24VAC unless
otherwise specified.
1. Remove door switch assembly from dryer. Check for
continuity across the two (2) terminals of the door switch
with plunger pushed in. If no continuity, replace the door
switch. If continuity is evident, reassemble door switch
back on dryer.
2. Make sure main door is closed and the plunger of the door
switch is pushed in. Check for voltage across TB #5 and #7.
If no voltage is evident, problem could be faulty transformer
(P/N: 141403) or bad wire or termination in the door switch
harness, from door switch to terminal block.
2. Check for voltage across microprocessor's 15-pin
connector #2 (yellow wire), and the spade terminal
on the microprocessor marked GND. If no voltage,
problem is bad wire or termination in wire from
microprocessor connector #2 to TB #5. If voltage,
problem is faulty computer.