Follett MCD425A/W Operation And Service Manual page 22

Loss of water
During operation, the water level cycles between the normal low (D) and normal high (C) water probes - the fill
valve (P21) cycling on and off . If continuity is not detected between the common probe (B) and normal low (D)
within 10 seconds, the LOW WATER and TIME DELAY LEDs will come on and the machine will shut down for
the one hour time delay period . After the time delay, the fill valve will re-energize and wait for continuity between
the common probe and normal high before restarting . LOW WATER LED will remain ON until the water level is
satisfied .
Start
Relay
Capacitor
OR
YELLOW
Water Sensors
22 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