Scotsman SCE275 - Manual (Page 27)

Service Diagnosis
SCE275
January 2003
Page 27
Problem or Symptom Possible Cause Probable Correction
Unit is off because of a
“Harvest Problem”
Bin controls did not sense
ice falling, unit stayed in
harvest until the maximum
harvest time ran out.
Check bin controls. The bin full light should be
off. If it is on or blinking the bin controls may be
dirty. Clean if dirty. The board and bin controls
may also need to be checked.
Push and release Off button. Push and release
Freeze button. Check machine operation. Check
if ice is made and harvests.
Bin controls or AutoIQ
Controller may have failed.
See “Unit does not shut off” below..
Other components may
have failed
Check the next page
Cubes are too large
Cube size control float is
sticking.
Check/clean
Inlet water valve leaks thru Check inlet water valve
Cubes are too small
Unit not level Check levelness
Not enough water Check for leak in reservoir
Low ice capacity
Dirty condenser or filter Replace filters, clean condenser
Blockage of air flow
Remove anything from in front of the machine
that blocks the free flow of air.
Low refrigerant charge
Check system. If there is a low charge, find the
leak, recover the refrigerant, repair the leak,
replace the dryer, evacuate and weigh in the
nameplate charge.
Unit does not shut off
Bin control system may
have failed.
Check bin controls. Check bin full light, if off,
place something between the electric eyes. Note:
Hood must be on. Use a piece of duct tape about
4" long and position it by hand between the
evaporators. The bin full light should begin to
blink (after 20 seconds of continuous blockage it
will glow steadily). If not, check operation of
electric eyes by unplugging #4 and jumping out
the two pins on the controller. If the bin full light
blinks, replace the bin controls. If it does not
blink, replace the controller. Note: Leaving #4
unplugged and jumped for 20 seconds will shut
the machine down on a bin full. It will restart after
5 minutes or may be reset by pushing the Freeze
button.