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MDT5N25 & MDT5N40
May 2001
Page 22
Symptom Possible Cause Probable Correction
No water is vended Check ice vending system, if no
ice will dispense, check the splash
panel cleaning switch
Allow 2 minutes for system to
reset
Check water supply Restore water supply
Check inlet water valve Replace valve if necessary
Makes ice, but with excessive
noise
Mineral scale on auger or
evaporator
Clean ice making system with
Scotsman Ice machine cleaner
Dry top bearing Check top bearing for proper
lubrication
Dry auger drive gear motor Check auger drive for proper
lubrication
Auger motor rotor bearings worn Replace auger motor
Vibration from loose panel or
tubing
Locate vibrating component and
secure it.
Low water level Check for air-lock in water line to
evaporator
Check for thermistor (water level
sensor) not shutting unit off when
there is lack of water.
Will not dispense ice Vane turns & ice is available but
will not flow out of bin
Check position of bin bottom. It
must have its slot over the ice
dispense spout.
Check condition of bin walls. They
must be smooth and the bin must
be round. Replace if rough or out
of round.
Touch Free ice dispensing system
does not operate water solenoid
or dispense motor
Check splash panel cleaning
switch
Push to reset or wait 2 minutes for
the board to reset itself
Check for power to motor or
solenoid
If power, check motor or solenoid.
If no power, replace touch free
sensors
If new touch free sensors do not
fix problem
Replace circuit board.
No power to compressor contactor
and auger motor
Power light on, but Bin empty light
not on
Check for ice between electric
eyes or dirty eyes.
Power light not, bin empty light on,
but Low water light on
Not enough water.
Water too hot
Electric eyes failed Replace photo electric eyes
Thermistor failed Replace water level sensor
Circuit board failed Replace circuit board
SERVICE DIAGNOSIS