22
12CI425A • 12HI425A
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 1–8) and non-normal diagnostic sequences showing torque-out for use in
troubleshooting are shown.
Circuitry notes
§
Bin signal is contact closure only -
DO NOT SUPPLY POWER.
Normal operation – Stage 1
Power is supplied to L1 of the control board, the
POWER LED light begins flashing. The ice level bin thermostat
in the dispenser is closed and calling for ice, supplying contact closure to the control board. The
LOW BIN LED
will be on. The control board will now go through the start-up sequence. The board checks the water sensors
(located in the reservoir) for continuity between the common probe (B) and the high probe (C). If continuity is
not sensed, the water fill valve (P21) is energized.
5
2
1
Start
Run
Compressor
T.O.L.
MAINTENANCE
LOW WATER
TIME DELAY
SLEEP CYCLE
MAKING ICE
LOW BIN
POWER
SERVICE
HI AMPS
HI PRESSURE
CLEANER FULL
High
Pressure
Switch
R S
C
Gearmotor
Start
Relay
Start
Relay
N
L1
Fan
A B C D
Water Sensors
RESET
Fill
Valve
Drain
Valve
3
4
2
Bin T-Stat
Clean Switch
P6
P21
P20
P19
P3
P22
P4
AUGER
WATER LEVELS
BIN P11
HI PRS
L1
R
S
C
RED
WHITE
WHITE
BLACK
BROWN
BLUE
RED
BLACK
YELLOW
Compressor
Electrical Box
COMPRESSOR
1 2 3 4 5 6 7 8
BLACK
N
P15
Ice Dispense Input
Содержание 12CI425A-L
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