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Loss of water
During operation, the water level cycles between the normal low (D) and normal high (C) water probes - the ll
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 ll 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
satised.
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
DRAIN CLOG
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
Drain Clog Sensor
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
Capacitor
BLACK
YELLOW
OR
NO CONNECT
22 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines
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