Hoshizaki HR24A service manual Energy Saving Mode

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c)Defrost Termination: Comp icon is on. EvapFM icon flashing. 30-min. DT terminates. 6-hr. DT starts. Comp icon turns on and Comp energizes. 2-min. EvapFM timer starts. EvapFM icon starts flashing and EvapFM de-energizes. When 2-min.

EvapFM timer terminates, EvapFM icon turns steady and EvapFM energizes. Normal operation resumes. Diagnosis: Has appliance been in defrost for 30 min.? If not, allow 30-min. DT to terminate. Confirm CTh is 4°F above setpoint. After 30‑min.

DT terminates, does Comp icon turn on and Comp energize? If not, replace CB. If

30‑min. DT terminates and Comp icon turns on but Comp does not energize, check CB Comp connector for 115VAC. If 115VAC is not present, replace CB. If 115VAC is present, and Comp is off, check Comp wire harness connections, Comp external protector (integrated with start relay), Comp start components, and Comp motor winding continuity.

12)Energy Saving Mode

ESM initiates during periods of inactivity. Once CTh cools to setpoint, 20-min. ESM timer starts. DS must remain engaged without activation (door open) for 20 min. after CTh has achieved setpoint for ESM to initiate. Once 20-min. ESM timer terminates, EvapFM operates on ESM cycle.

Diagnosis: Confirm 20-min. ESM timer terminates. Check that EvapFM cycles off with Comp and operates 1 min. on and 5 min. off when Comp is de-energized. If not, replace CB.

Legend: CB–control board; Comp–compressor; CT–cabinet temperature; DM–display module; DS–door switch; DT–defrost timer; ESM–energy saving mode; EvapFM–evaporator fan motor

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Contents HR24A Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Storage Capacity and Dimensions Specifications Electrical and Refrigerant DataStorage Capacity Dimensions Unit mmII. General Information Construction HR24ASequence of Operation Sequence Cycles and ShutdownCool Down Restart EvapFM and Defrost icons are onHR24A Sequence Flow Chart Sequence Flow ChartControl Board and Display Module Control Board Layout Display Module LayoutCabinet Temperature Default SettingsDisplay Module Icons Control Panel LockoutAlarm Safeties High and Low Temperature Alarm Values AH or ALService Menu Service Menu AccessService 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 IV. Service Diagnosis Diagnostic ProcedurePage Energy Saving Mode Startup and Cool Down Control Board CheckDefrost Thermistor Check Diagnostic Chart Appliance Not CoolingEvaporator is Frozen Up Defrost Fails to Start or TerminateService for Refrigerant Lines Replacement of ComponentsRefrigerant Recovery Brazing Evacuation and Recharge R-134aImportant Notes for Component Replacement Door Reversal Cleaning MaintenanceVII. 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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