Follett 12 Installation, Operation And Service Manual page 28

Problem Indicators
Compressor cycles 1. Compressor start relay in wrong position.
intermittently.
2. High pressure cutout open due to high head
pressure.
System status:
gearmotor and fan
3. Clogged or dirty air fi lter or condenser coil.
motor run.
4. Improper ventilation.
5. Defective compressor.
Unit runs but not 1. Clogged or dirty air fi lter or condenser coil.
making ice.
2. Compressor not pumping.
System status:
3. Low refrigerant charge.
compressor, gearmotor
& fan motor running.
Compressor and fan 1. Compressor switch in OFF position.
motor will not run.
2. No output on compressor and fan motor terminals
on control board.
Gearmotor runs.
3. Failed fan motor causes high pressure cut-out to
open.
Intermittent noises from 1. Mineral build-up on evaporator surface.
evaporator.
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Corrective Action
1. Position relay with arrow or word "top" .
2. Check discharge pressure and adjust water regulator
valve.
3. Clean or replace fi lter, clean condenser coil.
4. Provide inlet and exhaust air provisions per Follett ice
machine installation manual.
5. Replace compressor.
1. Clean or replace fi lter, clean condenser coil.
2. Replace compressor.
3. Check for leaks; repair, evacuate, and weigh in correct
charge.
1. Turn compressor switch on.
2. Replace control board.
3. Replace fan motor.
1. Clean evaporator with liquid ice machine cleaner.
12CI400A • 12HI400A 220 V 60 Hz/230 V 50 Hz Dispensers