Scotsman Prodigy Series - Manual (Page 50)

January 2015 Page 50
Problem Likely Cause Probable Solution
Shut down on
maximum harvest time
Ice bridge thickness too small, not enough ice
to open curtain
Check and adjust if needed
Ice bridge thickness too large, ice frozen to
evaporator frame
Check and adjust if needed
Purge valve does not open, water melts ice
bridge, not enough ice to open curtain
Check purge valve
Incomplete ice formation Check water distributor for partially
plugged holes
Curtain out of position Check curtain for swing restriction
Curtain switch does not open when curtain
does
Check switch with ohmmeter
Hot gas valve does not open Check hot gas valve, check controller
using test mode
Harvest assist probe out of position – ejector
pin not retracted
Check harvest assist mechanism – spring
should retract pin
Damaged evaporator Check evaporator surface
Shut down on
minimum freeze time
Grounded ice thickness sensor Check sensor for dirt and position. Clean
and check gap to evaporator surface
Restricted water distributor Clean water distributor
Dirty spillway surface Scrub spillway
Bridge thickness too thin Adjust to correct thickness
Diagnostics - Remote Air Cooled