Manuals / Hoshizaki / Kitchen Appliance / Ice Maker

Hoshizaki M029-897 III. Controls and Adjustments A. Control Switch, B. Control Board

Models: M029-897

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III. Controls and Adjustments

A. Control Switch

The control switch has three positions: OFF for power off, ICE for icemaking, and WASH to energize the water pump when cleaning and sanitizing.

B. Control Board

•A Hoshizaki exclusive control board is employed in IM series appliances.

•All models are pretested and factory adjusted.

NOTICE

•Fragile, handle very carefully.

•The control board contains integrated circuits, which are susceptible to failure due to static discharge. It is especially important to touch the metal part of the icemaker when handling or replacing the control board.

•Do not touch the electronic devices on the control board or the back of the control board.

•Do not change wiring and connections.

•Do not short out power supply to test for voltage.

•Always replace the whole control board assembly if it goes bad.

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Hoshizaki M029-897 service manual III. Controls and Adjustments A. Control Switch, B. Control Board

Contents

Stackable Square Cuber Model IM-500SAA HoshizakiHoshizaki America, IncPhone 1-800-233-1940 770 Fax Complete and detailed explanation of the problem618 Highway 74 South Peachtree City, GA Attn Hoshizaki Technical Support DepartmentCONTENTS serious injury Important Safety InformationIndicates a situation which could result in damage to the appliance or propertyWARNING, continued 1. Air-Cooled Model SAA I. Construction and Water/Refrigeration Circuit DiagramA. Construction Water Tank B. Water/Refrigeration Circuit Diagram1. Air-Cooled Model SAA A. Sequence of Operation Flow Chart II. Sequence of Operation and Service DiagnosisShutdown and Restart Sequence Flow Chart IM Control Board1. Startup Cycle B. Sequence of Operation2. Harvest Cycle 3. Freeze Cycle4. Shutdown No Ice Production - Possible Cause C. Service Diagnosis TableLong Harvest Cycle Low Ice Production - Possible CauseLong Freeze Cycle Slab Does Not Break Into Separate Cubes - Possible CauseCloudy Cubes - Possible Cause Large-Hole Cubes - Possible Cause Also see III.H.1. Dimple Diameter1. Bin Control Check D. Bin Control Check and Cleaning2. Bin Control Cleaning E. Evaporator Thermistor Check B. Control Board III. Controls and Adjustments A. Control SwitchPart Number P01873-01 Version 1.3A or Later 1. Control Board LayoutIM Control Board C. Control Buttons 1. RESET Button2. SERVICE 1 and SERVICE 2 Buttons D. Control Board Settings DO NOT ADJUST Control Board CB Setting MenuDO NOT ADJUST DO NOT ADJUSTDO NOT ADJUST Control Board CB Setting MenuDO NOT ADJUST IM-500SAA2. Use the SERVICE 1 and SERVICE 2 buttons to move through the list E. Control Board Information Display3. Press the RESET button to view the item’s value 4. Press the RESET button to return to list1.0A, displays as follows Freeze cycles interrupted by bin control shutdownexample, 655,350 cycles 2. Checking or Changing the Control Board Model Code F. Control Board Model Code Setting1. Control Board Replacement Page G. Error Codes 1. Dimple Diameter H. Quick Adjustmentsa To increase dimple diameter b To decrease dimple diameterDrain Position 2. Ice ClarityNormal Position 1. Refrigerant Recovery IV. Refrigeration Circuit and Component Service InformationA. Refrigeration Circuit Service Information 3. Evacuation and Recharge R-404A 2. BrazingB. Component Service Information Assembly Refer to illustration for assemblyJ. Pump Motor Assembly Refer to illustration for assemblyV. Maintenance 2. Drain the water tank VI. Preparing the Icemaker for Periods of Non-Use1. Remove the water from the icemaker water supply line VII. Disposal 1. IM-500SAA A. Specification DataVIII. Technical Information 1. IM-500SAA B. Performance Data1. IM-500SAA C. Wiring Diagram