ADC AD-78 User Manual
Page 54
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a. Main door switch circuit out of adjustment.
b. Loose connection in main door switch circuit.
J. Microprocessor (computer) L.E.D. (light emitting diode) display reads "dSFL" continuously
and the huzzer (tone) sounds every 30 seconds...
1. Fault in microprocessor heat sensing circuit.
a. Blown "dSFL" 1/8-amp fuse on the microprocessor controller (computer).
b. Failed microprocessor temperature sensor.
c. Failed microprocessor controller (computer).
d. Broken wire or connection somewhere between the microprocessor controller (computer) and the
microprocessor temperature sensor.
K. Microprocessor controller (computer) L.E.D. display reads ‘‘door” and the microprocessor
(computer) “DOOR” L.E.D. indicator
fs off...
1. Fault (open circuit) in main door/lint drawer switch circuit ...
a. Main door not closed all the way.
b. Main door switch is out of proper adjustment.
c. Failed lint main door switch.
d. Broken wire/connection in main door wiring circuit.
2. Failed 24 VAC step down transformer.
L. Microprocessor controller (computer) L.E.D. (display reads “door” and the microprocessor
(computer) “DOOR” L.E.D. indicator
is on...
1. Failed microprocessor controller (computer).
M. Microprocessor controller (computer) will not accept any keyboard [touchpad] entries, (i.e.,
L.E.D. display reads “FILL” and when keyboard [touchpad] entries are selected, the L.E.D.
display continues to read “FILL”)...
1. Failed keyboard label (touchpad) assembly.
2. Failed microprocessor controller (computer).
N. Microprocessor controller (computer) will only accept certain keyboard (touchpad) entries...
1. Failed keyboard label (touchpad) assembly.
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