33
Troubleshooting chart
Problem
Indicators/possible cause
Corrective action
6. Ice machine runs for short
period of time and shuts
down on torque error.
System status: 20M or 2nd
LED are lit.
1. Kink in ice transport tube.
2. Bin level control remains in closed
position.
3. Ice transport tube ruptured internally.
4. Worn evaporator bearings.
5. Faulty gearmotor start relay. Ice machine
torques out within 5 seconds of start-up.
6. Torque-out occurs when storage bin fi lls
to capacity.
1. Eliminate kink and check that tube
routing complies with Follett ice machine
installation manual.
2. Adjust or replace control.
3. Replace complete run of ice transport
tube.
4. Inspect bearings for roughness or binding
and replace if necessary.
5. Replace gearmotor start relay.
6. Ensure that ice contacts bin thermostat
before backing ice up in transport tube.
Reference dispenser manual for proper
thermostat and ice tube mounting.
7. Evaporator is iced up
on the outside. No ice
production.
System status: compressor,
gearmotor and fan motor
running.
1. Gearmotor running but no output rotation.
2. Float reservoir empty.
3. Air bubble in water supply line. Water in
reservoir but not in evaporator.
1. Check for broken gearmotor output shaft or
damaged gearbox.
2. Check for defective water sensor (water
OK (WTR) LED remains on even when
fl oat empty or probe removed from water).
3. Purge air from line.
8. Compressor
cycles
intermittently.
System status: gearmotor
and fan motor run.
1. Defective compressor starting relay or
capacitor.
2. High pressure cutout open due to high
head pressure.
3. Clogged or dirty condenser coil.
4. Improper
ventilation.
5. Defective
compressor.
1. Replace defective component.
2a. Check supply and temperature of water to
w/c condenser.
2b. Check discharge pressure and adjust
water regulator valve.
3. Clean condenser coil.
4. Provide inlet and exhaust air provisions per
Follett ice machine installation manual.
5. Replace
compressor.
9. Unit runs but not making
ice.
System status: compressor,
gearmotor and fan motor
running.
1. Clogged or dirty condenser coil.
2. Compressor not pumping.
3. Low refrigerant charge.
1. Clean condenser coil.
2. Replace
compressor.
3. Check for leaks; repair, evacuate, and
weigh in correct charge.
10. Compressor and fan motor
will not run. Gearmotor
runs.
1. Compressor switch in OFF position.
2. No output on compressor and fan motor
terminals on control board.
3. Failed fan motor causes high pressure
cut-out to open.
1. Turn compressor switch on.
2. Replace control board.
3. Replace fan motor.
11. Intermittent noises from
evaporator.
1. Mineral build-up on evaporator surface.
1. Clean evaporator with liquid IM cleaner.