48 American Dryer Corp. 112144-46
If the dryer is equipped with the optional rotational sensor and for whatever reason the Dual Microprocessor Controller
(DMC) computer detects that the basket (tumbler) is not turning, it will disable ALL of the dryer outputs (shut the
dryer down), and the light emitting diode (L.E.D.) display will read “SEFL.” The L.E.D. display will continue to
read “SEFL” until the DMC computer is manually reset by closing and opening the Program Switch (PS).
Possible causes...
1. Loose/slipping (out of proper adjustment) basket (tumbler) belt.
2. Broken basket (tumbler) V-belt.
3. Failed motor (refer to Item B on page 45 and Item E on page 46).
4. Failure in the rotational sensor circuit...
a. Failed rotational sensor.
b. Loose connection or break between the rotational sensor and the DMC computer.
L. DMC computer will not accept any, or ONLY accept certain keyboard (touch pad) entries...
1. Failed keyboard (touch pad) label assembly.
2. Failed DMC computer.
M. DMC computer locks up and the L.E.D. display reads erroneous message(s) or ONLY partial
segments...
1. Transient power voltage (spikes)...disconnect power to the dryer, wait 1 minute (NOTE: for dryer models with
the optional battery back up...disconnect battery), then reestablish power to the dryer. If a problem is still
evident, proceed to Item M2, Item M3, and Item M4.
2. Failed keyboard (touch pad) label assembly.
3. Improper grounding of the dryer or the DMC computer ground connections to the panel or the dryer are not
proper.
4. Failed DMC computer.
N. Dryer stops during a cycle and the DMC computer L.E.D. display returns to “FILL”...
If the dryer is equipped with optional battery back up...
1. Refer to Item M1, Item M3, or Item M4 on this page.
If the dryer is not equipped with optional battery back up...
1. Loose connection somewhere in the power source to the dryer.
2. Loose connection in main power circuit to the DMC computer.
3. Improper grounding of the dryer or the DMC computer ground connections to the panel or the dryer are not
proper.
4. Failed DMC computer.
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