Scotsman MFE400 - Manual (Page 15)

SERVICE DIAGNOSIS
PROBLEM POSSIBLE CAUSE PROBABLE CORRECTION
No ice, nothing operates No electrical power Check/restore power
Water supply turned off Check water filter/hand valve/float
valve
Bin control malfunction Check bin thermostat
Spout switch open Check bin thermostat
Master switch off Check why switch is off
Water pressure low (water safety
switch open) Check & clean water inlet & filters
High pressure cut out open Check fan motor or water supply
Auger drive motor open Check auger drive motor
Centrifugal switch open Check centrifugal switch
Auger delay switch open Check/replace auger delay
No ice, auger motor turning. Auger does not turn Check coupling & gear reducer
Low system charge Check refrigeration system.
Locate leak, recover remaining
refrigerant, repair leak. Replace
drier, evacuate and weigh in
system charge.
Compressor off Check system for adequate
refrigerant.
Check start relay
Check start capacitor
Check compressor windings
Check for compressor lock-up
Low capacity Overuse Recheck ice needs vs. machine
capacity
MFE400
May 1994
Page 15