Scotsman NU220 - Troubleshooting Analysis; Pre-Troubleshooting Checks; Common Issues and Causes

NUUndercounterIceMakerUserManual ScheduledMaintenance
B12
Troubleshooting analysis (inspection items to
do before calling the service provider)
Ice maker out of work (all the lamps are not
on)
 Whether the manual switch is ‘on’?
 Whether the fuse in the fuse box has
blown?
 Whether the power plug is plugged in?
 Whether the power switch on the front
panel is “on”?
Low ice capacity or low efficiency
 Whether the water supply switch has been
switched on?
 Whether the water temperature or ambient
temperature is too high?
 Whether there is heat source near the
machine or bad ventilation around the
machine?
Ice cube shape is poor
 Whether the water supply is sufficient?
 Whether the air filter is blocked?
 Whether some spiracles on the spray bar
are blocked?
Important：
 The machine should be maintained by authorized
maintenance people.
 If a wire is damaged, in order to avoid danger, call
authorized maintenance people to replace it.