Hoshizaki HR24A service manual Cabinet Temperature, Default Settings

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D. Cabinet Temperature

1. Default Settings

The default CT setpoint is 39°F. The default CT display scale setting is °F. NOTICE! Do not change the CT display scale from °F to °C. All temperature related values in the service menu must be changed manually if the CT display scale is changed from °F to °C.

a)Adjusting the Temperature Setpoint

The CT setpoint is adjustable between 34°F and 52°F. Follow the directions below to adjust the CT setpoint.

Note: If the display module panel is locked, press and hold the "-" button and the power button until "UnL" appears briefly on the display module.

1)Press and hold the "P" button until Comp icon flashes on DM.

2)Press the "-" or "+" button until the desired value is displayed.

3)Press the "P" button to save the new CT setpoint and return to the CT display. If

no button is pressed for 15 sec. after selecting the new CT setpoint, DM returns to CT display and the new CT setpoint is saved.

b) Manual Defrost

To initiate a manual defrost, press and hold the "+" button until the defrost icon turns on. 30‑min. DT starts. If Comp run time < 3 min., Comp icon and Comp continue until 3-min. Comp run timer terminates. Once 3-min. Comp run timer terminates, Comp icon turns off, Comp de‑energizes, and 30-min. DT starts. During defrost, the defrost icon stays on, EvapFM runs normally, and CT is displayed. Defrost lasts for 30 min.

Legend: Comp–compressor; CT–cabinet temperature; DM–display module; DT–defrost timer; EvapFM–evaporator fan motor

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Contents HR24A Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Specifications Electrical and Refrigerant Data Storage Capacity and DimensionsStorage Capacity Unit mm DimensionsHR24A II. General Information ConstructionSequence Cycles and Shutdown Sequence of OperationEvapFM and Defrost icons are on Cool Down RestartSequence Flow Chart HR24A Sequence Flow ChartControl Board and Display Module Display Module Layout Control Board LayoutDefault Settings Cabinet TemperatureControl Panel Lockout Display Module IconsHigh and Low Temperature Alarm Values AH or AL Alarm SafetiesService Menu Access Service MenuService Menu Chart Page AL alarm sensor. Do not adjust Fan operation with door closed 247 Address not used Baud Rate not used Parity not used III. Technical Data Refrigeration Circuit Wiring Diagram Diagnostic Procedure IV. Service DiagnosisPage Energy Saving Mode Control Board Check Startup and Cool DownDefrost Thermistor Check Appliance Not Cooling Diagnostic ChartDefrost Fails to Start or Terminate Evaporator is Frozen UpReplacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-134a BrazingImportant Notes for Component Replacement Door Reversal Maintenance CleaningVII. Preparing the Appliance for Periods of Non-Use VIII. Disposal
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HR24A specifications

The Hoshizaki HR24A is an advanced refrigeration unit designed to meet the cooling needs of commercial kitchens and food storage facilities. Known for its reliability and efficiency, this model showcases several innovative features that set it apart in the competitive market of commercial refrigeration.

One of the standout characteristics of the Hoshizaki HR24A is its robust construction. Built with a durable stainless steel exterior, it not only adds aesthetic appeal but also ensures longevity and resistance to corrosion and wear. The interior is designed for easy cleaning, with rounded corners that minimize the buildup of grime and food particles.

The HR24A offers an impressive storage capacity, making it ideal for establishments with high-volume food storage requirements. With a temperature range typically between 33°F and 38°F, the unit maintains optimal conditions for preserving perishables such as meats, dairy, and vegetables. This precision in temperature control is essential for maintaining food safety and quality.

One of the key technologies integrated into the Hoshizaki HR24A is its advanced refrigeration system. Utilizing a highly efficient compressor and a fan-assisted cooling feature, the unit ensures rapid temperature recovery even in busy kitchen environments. This is crucial during peak hours when door openings are frequent, as it helps maintain consistent internal temperatures.

Energy efficiency is another hallmark of the HR24A. It is designed with environmentally friendly refrigerants and complies with Energy Star standards, which can lead to significant cost savings over time through reduced electricity consumption. This commitment to environmental responsibility makes it an attractive option for eco-conscious businesses.

In terms of user-friendliness, the HR24A is equipped with digital controls and adjustable shelving, allowing for customized organization according to specific storage needs. The LED lighting inside the unit provides excellent visibility, making it easy to locate items quickly, which is particularly beneficial during busy service periods.

Overall, the Hoshizaki HR24A combines durability, efficiency, and functionality, making it an exceptional choice for anyone seeking a reliable refrigeration solution in a commercial kitchen setting. Whether used in restaurants, hotels, or catering businesses, its impressive features and state-of-the-art technology continue to meet the demanding requirements of the foodservice industry.
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