SERVICE DIAGNOSIS
PROBLEM
POSSIBLE CAUSE
PROBABLE CORRECTION
Unusual noise
Mineral scale in evaporator
Clean water system with ice
machine cleaner.
Auger coupling dry
Grease coupling
Auger coupling worn
Replace coupling and adapter
stand.
Bearings worn
Replace bearings and water seal.
Gearmotor loose on frame
Tighten bolts, check grommets
Low water level
Check water level in reservoir
Tubing vibrating
Check tubing for contact
Tooth on a gear missing
Check gears in auger drive
Compressor too loud
Replace compressor
Gear noise
Check gearmotor for oil leak
Water leaks from cabinet
Evaporator water seal worn or
cracked
Replace seal and bearings
Tubing to evaporator leaks
Replace tubing/fittings
Drain leaks
Check drain tubes and fittings
External drain restricted
Clean out drain
No refrigeration
Gearmotor does not turn
Check motor
Centrifugal switch does not close
Check switch
Fan motor does not turn
Check fan motor
Lack of refrigerant
Add refrigerant, if problem is
reduced, locate leak and repair it.
Compressor does not pump
Check/replace start capacitor
Check/replace start relay
Check/replace compressor
MFE400
May 1994
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