Icemaker Operational And Diagnostic Sequences - Follett C125A Installation, Operation And Service Manual

Icemaker operational and diagnostic sequences

The wiring diagrams that follow illustrate the circuitry of Follett icemakers used with 12 series ice dispensers.
Both normal operation (Stages 1 - 6) and non-normal diagnostic sequences showing torque-out (Stages 7 - 10)
for use in troubleshooting are shown.
• Compressor switch should read open in ON position
• Compressor start relay is position sensitive. See label on start relay for proper orientation.
• Bin signal is 115V, 60Hz
• Flashing water LED at any time indicates that water signal to board had been lost for more than one second
• Ten-second delay: There is a 10 second delay in reaction to loss of water (WTR) or bin (B-E) signals. If
signals are not lost for more than 10 seconds, no reaction will occur.
Power is supplied to L1 of the control board. The ice level control in the dispenser is closed and calling for ice,
supplying signal voltage to the control board. The control board will now go through the start up sequence. Less
than 30 seconds will elapse as the water sensor located in the float reservoir checks for water in the reservoir.
The Bin Empty LED (B-E) will be on.
COMPRESSOR
Normal operation – Stage 1
INPUT
POWER
W
B
G
GRD
X
WHITE
FAN
BLACK
WHITE
M
BLACK BLACK
1
R M
C ORANGE
S L
S
BLACK
RED
BLACK
WHITE
Circuitry notes
WATER
SENSOR
RESET
GRD
L1
L1
L2
CONTROL
L2
BOARD
L2
L2
L2
COMPRESSOR
FAN
DRIVE
L2
L1
3
4
GEARMOTOR
16
BIN SIGNAL
SWITCH
PWR
BIN T-STAT
DR
C
20M
60M
2ND
WTR
B-T
B-E
RED
RED
COMPRESSOR
SWITCH
WHITE
BLACK