Scotsman F1222L Service Manual - Manual (Page 17)

N0922L, N1322L, F1222L, F1522L
Remote Low Side Service Manual Includes Prodigy Plus
December 2014
Page 17
Electrical Sequence with Condensing Unit
Pushing and releasing the On button starts the
machine. The sequence of operation begins with
water. Water must be sensed or the controller will
not start the ice making process. If there is no water,
a 3 will show it the code display. If there is water,
and there is nothing blocking the infrared beam of
the ice sensors, the controller will start the machine.
A flashing F will show in the code display while the
auger drive motor starts up. When it has started,
the liquid line valve will open and the flashing F will
change to a continuous F.
An open liquid line valve allows refrigerant to flow
from the condensing unit into the evaporator and
suction line. That raises the suction pressure at the
condensing unit, causing the low pressure switch to
close, starting the compressor.
Ice making continues until the ice level control senses
a full bin, at that time the compressor is shut off, and
the auger motor continues to operate for a short time
to clear the evaporator of any left over ice. A b will
show in the code display.