Hoshizaki M029-897 E. Control Board Information Display, Press the RESET button to return to list

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E. Control Board Information Display

Control Board (CB) Setting Menu

				IM-500SAA
Category	No.	Item	Range	Default
Water Tank	74	Water Tank Ice Control Lower Temperature	0 to 40°C	27
Ice Control		See CB Setting 70, 71, 72, 74 description above.	(1°C increments)
& Harvest		Harvest Cycle Low Temperature Control
Cycle Low		If control board thermistor temperature at the
Temperature		beginning of harvest cycle is equal to or less than
Control		the harvest cycle low temperature control setting, hot
		gas valve repeatedly energizes for 40 seconds then
		de-energizes for 40 seconds to promote a balanced
		harvest across the evaporator plate.

E. Control Board Information Display

1.With unit on, press and hold the "SERVICE 1" button for 3 seconds. Display changes to "n1".

2.Use the "SERVICE 1" and "SERVICE 2" buttons to move through the list.

3.Press the "RESET" button to view the item’s value.

4.Press the "RESET" button to return to list.

5.Display returns to normal if no buttons are touched for 20 seconds.

Control Board Information Display

			History Cleared by
			Pressing and Holding
			SERVICE 1 and
			SERVICE 2 Buttons
			Simultaneously for
			5 Sec. when Item Value
No.	Item	Description	is Displayed?

n1	Freeze Cycle Time	0 to 99 min.	No
	During Freeze Cycle: Time since freeze cycle
	started.
	After Freeze Cycle: Time of previous freeze cycle.

n2	Freeze Cycle Completion Rate	0 to 100%	No
	During Freeze Cycle: Percent of freeze cycle	00 = 100%
	completed.
	After Freeze Cycle: Percent of previous freeze
	cycle completed.

n3	Current Evaporator (Cube Control) Thermistor	°C	No
	Temperature

n4	Current Control Board Thermistor Temperature	°C	No

n5	Water Temperature	"H" if Higher than 48°F	No
	Temperature at evaporator (cube control)	(9°C)
	thermistor 30 seconds after pump motor	"L" if 48°F (9°C) or
	energized in freeze cycle plus the water	Lower
	temperature correction value (Control Board
	Setting 13).
n6	Current Condenser Thermistor Temperature	°C	No
	Not Applicable to IM-500SAA

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Contents Stackable Square Cuber Model IM-500SAA HoshizakiHoshizaki America, IncAttn Hoshizaki Technical Support Department Complete and detailed explanation of the problemPhone 1-800-233-1940 770 Fax 618 Highway 74 South Peachtree City, GACONTENTS appliance or property Important Safety Informationserious injury Indicates a situation which could result in damage to theWARNING, continued 1. Air-Cooled Model SAA I. Construction and Water/Refrigeration Circuit DiagramA. Construction Water Tank B. Water/Refrigeration Circuit DiagramIM Control Board II. Sequence of Operation and Service DiagnosisA. Sequence of Operation Flow Chart Shutdown and Restart Sequence Flow Chart3. Freeze Cycle B. Sequence of Operation1. Startup Cycle 2. Harvest Cycle4. Shutdown No Ice Production - Possible Cause C. Service Diagnosis TableSlab Does Not Break Into Separate Cubes - Possible Cause Low Ice Production - Possible CauseLong Harvest Cycle Long Freeze CycleCloudy Cubes - Possible Cause 1. 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 Freeze Cycle Water Supply Time 2 Partial Drain CB water supply time 1 CB Setting 12 timer terminatesFreeze Cycle Water Supply Time 1 Partial Drain CB IM-500SAA 4. Press the RESET button to return to list E. Control Board Information Display2. Use the SERVICE 1 and SERVICE 2 buttons to move through the list 3. Press the RESET button to view the item’s value1.0A, 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 b To decrease dimple diameter H. Quick Adjustments1. Dimple Diameter a To increase 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 G. Water Pan Assembly Refer to illustration for assemblyAssembly J. Pump Motor 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 B. Performance Data 1. IM-500SAA C. Wiring Diagram