Hoshizaki KM-1301SWH-E Sequence Flow Chart, Cycle Steps Minute Fill Harvest Cycle, Pump-Out Cycle

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"G" Control Board Sequence Flow Chart KM-1301SAH-E, KM-1301SWH-E, KM-1301SRH-E

Cycle Steps

1. 1-Minute Fill

2. Harvest Cycle

3. Freeze Cycle

4. Pump-Out Cycle

Cycle

• WV time: 6 min. or the length of harvest minus 0 or

• Minimum freeze time: 5 min.

• Factory set for every

50 sec. (S4 dip switch 7), whichever is shorter. DO

• Maximum freeze time: freeze timer setting

10th cycle (S4 dip

NOT ADJUST S4 dip switch 7 on this model.

(S4 dip switch 9 & 10)

switch 5 & 6)

• Maximum harvest time: 20 min.

• Pump motor stops for

Thermistor

1 to 3-min. timer in control

5-min. timer in

F/S in control

2 sec., then reverses

in control

(S4 dip switch 1 & 2)

control

for 10/20 sec. (S4 dip

switch 3 & 4)

Harvest Pump

Timer

Sartup begins

0 or 50 sec.

here after 5-sec.

F/S closed

F/S closed

F/S check

PM energized

F/S check

F/S open or freeze

delay

WV de-energized

Comp continues

WV energized

WV continues

Comp continues

timer terminates

Thermistor temperature

FMR continues

Comp energized

FMR continues

HGV energized

F/S open

FMR energized

reaches 48°F (9°C)

PM continues

PM de-energizes for 2 sec.,

HGV energized

(3.9 kΩ or less).

FMS energized

then reverses for 10/20 sec.

Harvest timer starts.

LLV energized

FM de-energized

F/S open

HGV de-energized

LLV de-energized

If F/S is open, compressor stops and cycle returns to 1-Minute Fill Cycle

Thermostatic BC

1. Bin Full

2. Icemaker Off

3. Ice Level Lowered

Shutdown and Restart

Within 10 sec. after ice contacts

All components de-energized.

No ice touching thermostatic bulb.

(KM-1301SAH-E)

thermostatic bulb, unit shuts down.

Icemaker starts at "1. 1-Minute Fill Cycle."

Thermostatic BC Operation

To 1 above

Ice contacts thermostatic bulb

BC-open

BC closed NOTE: Green "BC CLOSED" LED on continuously

All components de-energized

when the K4 jumper is in place.

2. Sequence Flow Chart

Mechanical BC	1. Bin Full
Shutdown and Restart	Shutdown Delay:
(KM-1301SWH-E, KM‑1301SRH-E)	• Fill Cycle – 15 sec. after activation.
	• Harvest Cycle – At the end of the harvest cycle, or up to 15 sec. into the
	freeze cycle if activated at the end of the harvest cycle.
	• Freeze Cycle – 15 sec. after activation if activated at least 15 sec. before
	the 5-min. short cycle protection timer terminates.
	Otherwise, at the end of the next harvest cycle.
Mechanical BC Operation

2. Icemaker Off	3. Ice Level Lowered
All components	Ice level lowered. No ice
de-energized.	pressing against BC actuator
	paddle. Icemaker starts at
	"1. 1-Minute Fill Cycle."
	To 1 above

BC open	Yellow "BC OPEN" LED continues.	BC closed
Green "BC CLOSED" LED off	All components de‑energized	Green "BC CLOSED" LED on
Yellow "BC OPEN" LED on		Yellow "BC OPEN" LED off

Legend:	F/S–float switch	Components Energized when the Control Switch is in the "WASH" Position
BC–bin control	HGV–hot gas valve	The "WASH" position on the control switch is used when cleaning and sanitizing the unit. When in the "WASH" position, power is
Comp–compressor	LLV–liquid line valve
		supplied to the pump motor. This allows cleaner and sanitizer to flow over the outside of the evaporator plate assembly.
FM–fan motor	PM–pump motor
FMR–fan motor-remote WV–inlet water valve