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3. Parameter in Program Location 01 (PL01) set incorrectly.
a. Bad coin program should be set for “bCrS” and not “bCLO.”
I. Dual Microprocessor Controller (DMC) computer light emitting diode (L.E.D.) display reads
“dSFL”...
1. L.E.D. display consistently reads “dSFL” and will not clear...
a. DMC computer 1/8-amp (Slo-Blo) fuse is blown.
b. Failed DMC computer temperature sensor.
c. Broken wire and/or termination in sensor harness somewhere between the sensor bracket and the
DMC computer.
2. L.E.D. display reads “dSFL” for a short period of time (30 seconds or less) and then returns to the normal
stop “FILL” mode...
NOTE: Once the DMC computer detects a problem, it updates every 30 seconds so that if a problem
was a loose connection in this circuit, which corrected itself, the “dSFL” display condition
would automatically be canceled.
a. Loose wire and/or termination in sensor harness somewhere between the sensor bracket and the DMC
computer.
b. Failed DMC computer temperature sensor.
J. DMC computer L.E.D. display reads “Hot”...
The “Hot” display condition indicates a possible overheating condition. The DMC computer monitors the
temperature in the dryer at ALL times. If the DMC computer detects that the temperature in the dryer has
exceeded 170º F (77º C), it will disable ALL of the dryer outputs (shut the dryer down), the buzzer (tone) will
sound for approximately 5 seconds, and the L.E.D. display will read “Hot.” The L.E.D. display will continue to
read “Hot” until the temperature has dropped to 170º F (77º C) or lower and the DMC computer is manually
reset by closing and opening the Program Switch (PS).
Possible reasons for overheating...
1. Restriction in location exhaust ductwork.
a. Dryer exhaust damper stuck in closed position.
b. Undersized exhaust ductwork.
2. Insufficient make-up air.