MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines 11
Electrical system
ATTENTION!
To prevent circuit breaker overload, wait 15 minutes before restarting this unit. This allows the compressor
to equalize and the evaporator to thaw.
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 flashing green light labeled POWER indicates power to the machine . All other normal operation status indicators
are covered as follows:
Ice machine disposition
Operating conditions
FLASHING
ON or OFF
Legend:
OFF
ON
1 . Ice machine is making ice .
1 .
Normal running.
2 . Ice machine is not making ice .
2 .
Normal time delay. When the bin fills with ice, the LOW BIN
light goes out momentarily 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 .
DIP Switch Settings
Sleep cycle dispense duration
OFF ON
1
2
3
4
5
6
7
8
4
5
4
5
4
5
4
5
35 s
15 s
5 s
60 s
OFF POSITION
ON POSITION
Sleep cycle
enabled
Not used
Sleep cycle
dispense duration
60 min. time delay
Flush enabled*
Maint. timer OFF
OFF ON
Sleep cycle
disabled
Not used
Sleep cycle
dispense duration
20 min. time delay
Flush disabled
Maint. timer ON
1
2
3
4
5
6
7
8
Sleep cycle
enabled
Not used
Sleep cycle
dispense duration
60 min. time delay
Flush enabled
Maint. timer OFF
OFF ON
Sleep cycle
disabled
Not used
Sleep cycle
dispense duration
20 min. time delay
Flush disabled
Maint. timer ON
1
2
3
4
5
6
7
8
MCD425A/W_T, MCD425A/W_S, R425A/W
Replacement P425A/W installed in Symphony dispenser
Sleep cycle
enabled
Not used
Sleep cycle
dispense duration
60 min. time delay
Flush enabled
Maint. timer OFF
OFF ON
Sleep cycle
disabled
Not used
Sleep cycle
dispense duration
20 min. time delay
Flush disabled
Maint. timer ON
1
2
3
4
5
6
7
8
425A/W installed in Symphony Plus
25/50/110 CI, CT, or FB
* Flush can be enabled on Symphony CT and FB models. Flush should be disabled on Symphony CI units due to risk of internal leak if
drain line is blocked. All Symphony Plus models should be set to Flush enabled.
