Follett Maestro Plus MC 414A Series Installation, Operation And Service Manual page 21

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.
T.O.L.
Compressor
RED
Gearmotor
A B C D
Water Sensors
R
S
C
2
1
Start
Relay
5
Compressor
Electrical Box
WHITE
Drain Fill
Valve
Valve
Bin T-Stat
Fan
WHITE
N
N
P15
L1
BLACK
L1
HI PRS
RED
P6
P21
P20
BROWN
P19
BLACK
P3
WATER LEVELS
P22
BLUE
P4
AUGER
MC_414A, MF_414A R290 230 V/50 Hz Ice Machines
High
Pressure
Switch
POWER
LOW BIN
MAKING ICE
SLEEP CYCLE
TIME DELAY
LOW WATER
1 2 3 4 5 6 7 8
MAINTENANCE
RESET
SERVICE
HI AMPS
HI PRESSURE
BIN P11
CLEANER FULL
Clean Switch
21