Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board Layout
- B. LED Lights and Audible Alarm Safeties
- C. Settings and Adjustments
- 1. Default Dip Switch Settings
- 2. Harvest Time (S4 dip switch 1 & 2)
- 3. Pump-Out Time/Harvest Time During Pump-Out (S4 dip switch 3 & 4)
- 4. Pump-Out Frequency Control (S4 dip switch 5)
- 5. Harvest Pump Time (Harvest Assist Duration) (S4 dip switch 6)
- 6. Harvest Pump Time (Harvest Assist) (S4 dip switch 7)
- 7. Factory Use (S4 dip switch 8)
- 8. Freeze Timer (S4 dip switch 9 & 10)
- 9. Float Switch Selector (S5 dip switch 1)
- 10. Refill Counter (S5 dip switch 2 and 3)
- 11. Minimum Harvest Time (S5 dip switch 4)
- 12. Slush Control (S5 dip switch 5)
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
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8. Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specication, or the icemaker may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent
possible freeze-up issues. Upon termination of the freeze timer, the control board initiates
the harvest cycle or pump-out cycle. After 2 consecutive freeze timer terminations, the
control board shuts down the icemaker. In this case, see "II.H.3. Low Ice Production"
for possible solutions. The freeze timer is factory set and no adjustment is required.
Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for
recommendations.
S4 Dip Switch Setting Time
(min.)
No. 9 No. 10
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 75
9. Float Switch Selector (S5 dip switch 1)
NOTICE
Do not adjust. This must be left in the factory default position or the icemaker will
not operate correctly.
This dip switch setting allows use of this control board in single and dual oat switch
models. This model uses a single oat switch style.
S5 Dip Switch Setting
Top or Bottom Float Switch
ControlNo. 1
OFF Bottom Float Switch Enabled
ON Top Float Switch Enabled
10. Rell Counter (S5 dip switch 2 and 3)
NOTICE
Do not adjust. These must be left in the factory default position or the icemaker will
not operate correctly.
S5 Dip Switch Setting Rell
Counter
No. 2 No. 3
OFF OFF 0
OFF ON 1 rell
ON OFF 9 rells
ON ON 10 rells