Hoshizaki Dip Switches and Settings for Ice Machines

3. Controls and Adjustments

CAUTION

Dip switches are factory set. Failure to maintain factory settings may adversely affect performance and warranty coverage. For more information, contact Hoshizaki Technical Support at 1-800-233-1940.

a)Default Dip Switch Settings

The dip switches are factory set to the following positions:

S4 Dip Switch

S4 Dip Switch No.	1	2	3	4	5	6	7	8	9	10
KM-901MAH	ON	OFF	ON	OFF	ON	ON	OFF	OFF	OFF	ON
KM-901MWH	ON	OFF	ON	OFF	ON	ON	OFF	OFF	OFF	ON
KM-901MRH/3	ON	OFF	ON	OFF	ON	ON	OFF	OFF	OFF	ON

S5 Dip Switch

("G" Control Board: Auxiliary Code U‑1 and Later)

S5 Dip Switch No.	1	2	3	4	5
KM-901MAH	OFF	OFF	OFF	OFF	OFF
KM-901MWH	OFF	OFF	OFF	OFF	OFF
KM-901MRH/3	OFF	OFF	OFF	OFF	OFF

Freeze Timer (9 & 10)

Factory Use (8)

Bin Control Selector (7) "E" Control Board

Harvest Pump Timer (7) "G" Control Board

(Do Not Adjust)

Pump-Out Frequency Control (5 & 6)

Pump-Out Timer (3 & 4)

Harvest Timer (1 & 2)

b)Harvest Timer (S4 dip switch 1 & 2)

The harvest timer when the thermistor reads 48°F (9°C) at the evaporator outlet and the control board reads the thermistor's 3.9 kΩ signal. The harvest timer is factory set, and generally no adjustment is required. However, a setting longer than the factory setting may be advised in cases where the flush provided at harvest needs to be prolonged for extra cleaning. Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for recommendations. Keep in mind that setting the harvest timer to a longer setting decreases 24-hour production.

Note that the pump-out timer (S1 dip switch 3 & 4) acts in place of the harvest timer during cycles with a pump-out. For details, see "II.C.3.c) Pump-Out Timer (S1 dip switch 3 & 4)."

S4 Dip Switch Setting		Time
		(seconds)
No. 1	No. 2
OFF	OFF	60
ON	OFF	90
OFF	ON	120
ON	ON	180

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