Hoshizaki FD-1001MLH(-C) User Manual
5
1-in-1 drain cycle. DV opens for
seconds every hour
(S1
Dip Switch 4).
Icemaker status does not change.
FD Sequence Flow Chart
LF/S
closed
UF/S
closed
FT
off
WV
off
3. 1-in-12 Drain Cycle
& Restart (optional)
3.
Icemaker Off
UF/S
open
LF/S
open (WV on)
FT
started (90 sec.)
WV
on
CR
continues
Comp
continues
GMR
continues
GM
continues
GMPR
continues
FM
continues
FMR
co
ntinues
LLV
continues
SLV
continues
1. Startup
2. Ice Purge Cycle
WV
on
FT
on (90 sec.)
CR
on
Comp
on
LLV
on
SLV
on
GMR
continues
GM
continues
GMPR
continues
FM
continues
FMR
continues
Power Switch "ON"
Control Switch in "ICE"
POWER OK LED on
IS Green LED on
IS Yellow LED off
2. Infrared Sensor Shutdown & Restart
1. Bin Full
IS
activated or
DC
starts
CR
off
Comp
off
LLV
off
SLV
off
GMR
continues
GM
continues
GMPR
continues
FM
continues
FMR
continues
1. Fill Cycle
3. Freeze Cycle
LF/S
closed
UF/S
closed
FT
off
WV
off
CR
co
ntinues
Comp
continues
GMR
continues
GM
continues
GMPR
continues
FM
continues
FMR
continues
LLV
continues
SLV
continues
Low Water Safety
UF/S
open
WV
on
FT
exceeded
1-beep
alarm
sounds
CR
off
Comp
off
LLV
off
SLV
off
GMR
continues
GM
continues
GMPR
continues
FM
continues
FMR
continues
DV
on (
DC
only)
GMR
off
GM
off
GMPR
off
FM
off
FMR
off
2.
Ice Purge Cycle
10-min. DT
off (
DC
only)
DV
off (
DC
only)
1-in-12 DT
reset (
DC
only)
IS Green LED on
IS Yellow
LED (flashing or steady)
IS delay determined by S1 dip switch
1,
, & 3
4. Icemaker Restart
5 minutes
Note: If IS fails to shutdown the
icemaker, MBC opens and a
9-beep alarm sounds.
4. Icemaker Restart
2.
Ice Purge Cycle
3.
10-Minute
Drain
Legend:
Comp
-compressor
CR
-compressor relay
DC
-drain cycle
DT
-drain timer
DV
-drain valve
FM
-fan motor
FMR
-fan motor-remote
FT
-fill timer (low water safety)
GM
-gear motor
GMPR
-gear motor protect relay
GMR
-gear motor relay (X
CB)
IS
-infrared sensor bin control
LF/S
-lower float switch
LLV
-liquid line valve (MLH only)
MBC
-mechanical bin control
PT
-purge timer
SLV
-suction line valve (MLH only)
UF/S
-upper float switch
WV
-water valve
If Fil
l > 90 sec.
FT
1-beep alarm
sounds
WV
continues
When UF/S closes
alarm resets and
. Ice Purge Cycle starts.
Maximum
90
seconds
4. 1-in-12 Drain Cycle -
Although the
factory default 1-in-1 drain cycle
is recommended, a 1-in-1
drain cycle is available. For 1-in-1
drain
cycle sequence, see "3. 1-in-1
Hour Drain Cycle & Restart (optional)."
Refill
FT Maximum
90
seconds
90 sec.
FT
exceeded
1-beep alarm
sounds
90 sec.
PT
begins
When UF/S closes,
alarm resets and
.
Ice Purge Cycle
starts.
1-beep alarm
continues
WV
continues
GMR
off
GM
off
GMPR
off
FM
off
FMR
off
IS Green LED on
IS Yellow LED off
IS Green LED on
IS Yellow LED off
1.
DT Initiates DC
To bypass, press the
"SERVICE" button after
GM starts.
5 minutes
to "
. Ice Purge Cycle" above
to "1. Fill Cycle" above
90
seconds
(S1 dip switch 4)
FT
off (90 sec.)
FT
exceeded
PT
terminates
30 sec.
GMR
on
GM
on
GMPR
on
FM
on
FMR
on
2. Sequence Flow Chart