Ice Machine Operational And Diagnostic Sequences - Follett 12 Installation, Operation And Service Manual

Ice machine operational and diagnostic sequences

The wiring diagrams that follow illustrate the circuitry of Follett ice machines used with 12 series ice
dispensers. Both normal operation (Stages 1 – 6) and non-normal diagnostic sequences showing torque-out
(Stages 7 – 10) for use in troubleshooting are shown.
Circuitry notes
• Compressor switch should read closed in ON position.
• Bin signal is 16V DC.
• Flashing water LED at any time indicates that water signal to board has been lost for more than one second.
• Ten-second delay: There is a 10 second delay in reaction to loss of water (WTR) or bin (B-E) signals. If
signals are not lost for more than 10 seconds, no reaction will occur.
Normal operation – Stage 1
Power is supplied to L1 of the control board. The ice level control in the dispenser is closed and calling for ice,
completing the bin signal circuit to the control board. The control board will now go through the start-up sequence.
Less than 30 seconds will elapse as the water sensor located in the fl oat reservoir checks for water in the
reservoir. The bin empty LED (B-E), and power LED (PWR) will be on.
GREEN/YELLOW
BROWN
BLUE
WHITE
BLACK
WHITE
BLACK
ORANGE
ORANGE
BLACK
12CI400A • 12HI400A 220 V 60 Hz/230 V 50 Hz Dispensers
RED
RED
BLACK
BLACK
YELLOW
BLACK
BLACK
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