Follett R425A/W Installation, Operation And Service Manual page 14

Note: The operation stage descriptions that follow are based on the unit containing the split-phase gear
motor.
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.
Start
Relay
Capacitor
OR
YELLOW
Water Sensors
14 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines
T.O.L.
R
S
C
Compressor
2
1
RED
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
4 Valve
Valve
3 2
BLACK
R
S
C
Gearmotor
A B C D
Drain Clog Sensor
Fan
WHITE
N
N
L1
BLACK
L1
RED
P6
P21
P20
BROWN
P19
BLACK
P3
P22
BLUE
P4
AUGER
Bin T-Stat
High
Pressure
Switch
POWER
P15
LOW BIN
MAKING ICE
SLEEP CYCLE
HI PRS
TIME DELAY
LOW WATER
1 2 3 4 5 6 7 8
MAINTENANCE
RESET
SERVICE
HI AMPS
WATER LEVELS
HI PRESSURE
DRAIN CLOG
P11
BIN
CLEANER FULL
Clean Switch