14
Electrical system
Normal control board operation
The PC board indicator lights provide all the information necessary to determine the machine's status. Green
indicator lights generally represent “go” or normal operation; Yellow indicators represent normal off conditions;
Red indicators generally represent alarm conditions, some of which will lock the machine off.
A green light labeled POWER indicates power to the machine. A fl ashing green light labeled CPU is normal and
indicates that the Central Processing Unit “heart beat” is working. All other normal operation status indicators are
covered as follows:
1. Ice machine is making ice.
2. Ice machine is not making ice.
3. Ice machine is not making ice.
1.
Normal running.
2.
Normal time delay.
When the bin fi lls with ice, the LOW BIN
light goes out and the refrigeration and auger drive systems
immediately shut down. (
Note:
The fan motor will continue to
run for 10 minutes to cool condenser) The TIME DELAY light
comes on, initiating the time delay period. When the time delay
expires, the machine will restart provided that the LOW BIN
light is on.
3.
Normal purge indicator.
After a selected period of ice
making time has elapsed (1 or 2 hours), the ice machine will
automatically self-fl ush. The compressor will shut down but
the fan and gearmotor will continue to run. After the fl ush is
complete the machine will refi ll and start without a time delay.
Ice machine disposition
Operating conditions
ON
OFF
Legend:
ON or OFF
FLASHING
PO
WER
L
O
W
BIN
A
UGER ON
REFRIG ON
PUR
GE
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DR
AIN CL
OG
HI W
A
TER
CPU
L
O
W
A
TER
PO
WER
L
O
W
BIN
A
UGER ON
REFRIG ON
PUR
GE
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DR
AIN CL
OG
HI W
A
TER
CPU
L
O
W
A
TER
PO
WER
L
O
W
BIN
A
UGER ON
REFRIG ON
PUR
GE
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DR
AIN CL
OG
HI W
A
TER
CPU
L
O
W
A
TER
