Specifications

Service Diagnosis
MDT3F & MDT4F
May 2001
Page 20
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.
Gear motor 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 gear motor for oil leak
No water is dispensed Water Switch in Off position Switch to ON
Water switch open Replace switch
Water solenoid plugged up Clean inlet screen of solenoid
Water solenoid coil open Replace solenoid
Vend system does not work Check/replace vend system
Water turned off Restore water supply
Water drips from spout Melting ice in chute Some water dripping is normal
Unit or bin not level Level unit, check bin
Water solenoid leaks thru Replace solenoid
Ice jammed in spout Clear ice jam, check for cause
Ice will not stop dispensing Vend system does not work Check/replace vend system
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 Gear motor 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