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.
Auger motor off, top light on
board is ON (only up to serial
number 804817-05M).
Overloaded twice in one hour
Reset on circuit board. Check
for reason auger motor
overloaded: Bearings & scale on
evaporator. Clean & replace
worn parts.
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.
SERVICE DIAGNOSIS
TDE550 & TDE650
August 1999
Page 22
