Service Diagnosis - Scotsman SCN60 Installation And Use Manual

SCN60
Service

Service Diagnosis

Problem
No ice, continued
Not keeping up, makes
ice but less than normal
Makes ice but also an
unusual noise
Water Leak
Water flows continuously
Likely Cause
Ice level sensor failure
Auger motor on but compressor and fan
motor are off.
Ice making light on, nothing operating.
Dirty condenser
Air flow blocked
Gravity drain restricted
Pump drain slow
Scale on evaporator and auger
Torn door gasket, door does not close
tightly
Panels vibrating
Fan blade rubbing
Scale on evaporator and auger
Drain pump cuts in and out.
Tubes rubbing
Unit in very cold conditions
Drain tube off or cracked
Water inlet connection loose
Float valve not shutting off
August 2011
Page 10
Probable Solution
With power on and Ice Making light on,
check connector, if secure jump the two
middle pins at J2 (bin stat) on the
controller together. Unit should start. If it
does, replace the sensor, if not, replace
the controller.
Restart unit. Check for power to
compressor and/or fan motor. If none,
replace controller.
Ice Making light blinking. Condition is
temporary, unit has been switched off.
May be in a restart window. See page 7.
Vacuum condenser fins
Check for vent blockage
Check drain, clear of restriction. Ensure
it has a proper air vent.
Check for proper pump switch operation
and drainage
Clean with scale remover. See
Maintenance section.
Check gasket and door fit.
Check panels, adjust fit, tighten screws
Check fan blade for foreign object.
Remove same. Check alignment.
Clean with scale remover. See
Maintenance section.
Check valve failure, replace.
Check for tube contact to panel or
another tube.
Do not operate unit below limits
Check/repair drain tube
Check/tighten connection
Check float, if stuck free it. If leaking by
when full, replace the valve.