Scotsman CME506R AutoIQ - Manual (Page 28)

Service Diagnosis
CME506R, 656R, 806R: AutoIQ Cubers
January 2000
Page 28
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. If the bin full light 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
Cube size control adjusted
wrong
Re-adjust cube size (if adjustable)
Cubes are too small Cube size control adjusted
wrong
Re-adjust cube size (if adjustable)
Not enough water Check for leak in reservoir
Low ice capacity Dirty condenser Clean condenser
Recirculation of air Block air re-circulation or move condenser
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.
Cube size set wrong Check standpipe height
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.
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 (touch the tool to the
cabinet to discharge static electricity before
contacting 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 (at the
end of the harvest cycle). It will restart after 4
minutes or may be reset by pushing the
Freeze button.