Hoshizaki 73183 service manual Control Module Check, Startup/Cool Down

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B. Control Module Check

Before replacing a control module that does not show a visible defect and that you suspect is bad, always conduct the following check procedure. This procedure will help you verify your diagnosis. Always choose a white (W) neutral wire to establish a good neutral connection when checking high voltages. Also, confirm that there is a good neutral connection to the control module terminal N5.

Alarm Reset: To silence the alarm, press and release the upper or lower button with power on. For alarm information, see "II.D.2. Alarm Safeties."

Startup/Cool Down:

1)Check all wiring connections. Confirm that the display module cable, cabinet thermistor, and defrost thermistor are properly connected.

2)Move the power switch to the "ON" position.

3)Check for 115VAC between control module terminals L3 and N5. If 115VAC is not present, check power supply and power switch.

4)Check that the display module is on and cabinet temperature is displayed. If not, it is recommended that both the control module and display module be replaced.

5)Freezer: Check that the evaporator fan motors are energized. Make sure that the door(s) are closed and the door switch is engaged. Next, check for 115VAC between control module terminals F6 and N5. If 115VAC is not present, the control module must be replaced.

6)Check that the compressor and condenser fan motor energize. If not, check for 115VAC between control module terminals C1 and N5. If 115VAC is not present, control module must be replaced.

Defrost:

7)Press and hold the lower button until "dEF" appears on the display module.

8)Confirm that the compressor, condenser fan motor, and evaporator fan motors (freezer) de‑energize. Check for 115VAC between control module terminals C1 and N5 for compressor and condenser fan motor, then between terminals F6 and N5 (freezer) for evaporator fan motors. If "dEF" is displayed and there is 115VAC between the terminals, control module must be replaced.

9)Freezer: Confirm that the defrost heater energizes. Check for 115VAC between control module terminals H4 and N5. If "dEF" is displayed and 115VAC is not present, control module must be replaced.

10)Check that the components restart after defrost termination.

Refrigerator: Compressor and condenser fan motor energize as soon as the defrost thermistor termination temperature is satisfied. See "Defrost Termination" under "IV.A.1.9) Defrost" and "IV.C. Thermistor Check." If components fail to start, control module must be replaced.

Freezer: Compressor and condenser fan motor energize 3-minutes after defrost termination temperature is satisfied. Evaporator fan motor energizes 5-minutes after that (except manual defrost), and the cabinet temperature appears on the display module 5-minutes after the evaporator fan motor energizes. See "Defrost Termination" under

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Contents Superior Degree Reliability Number Issued Hoshizaki AMERICA, INC Contents Page Serious injury Important Safety InformationIndicates important information about the use and care UnitPage Specifications Nameplate Ratings DimensionsRefrigerated Volume and Shelf Space Unit mm One Section/Two Section/Three SectionOne Section II. General Information ConstructionTwo Section Three Section Sequence Cycles and Shutdown Sequence of OperationFreezer Charts Refrigerator Sequence Flow ChartFreezer Sequence Flow Chart Display Module Layout Display ModuleTemperature Setpoint Controls and AdjustmentsControl Module Refrigerator Control Module Freezer Control ModuleControl Module Layout Refrigerator & Freezer Cabinet Alarm SafetiesMullion/Perimeter Heater High-Pressure SwitchThermistors Compressor External or Internal OverloadIII. Technical Data Refrigeration Circuit Wiring Diagrams CR2B-FS/HS, CR3B-FS/HS CF1B-FS/HS, CF3B-FS/HS CF2B-FS/HS, CF3B-FS/HS Page Diagnostic Procedure IV. Service DiagnosisRefrigerator Defrost Diagnosis DefrostFreezer Defrost Page Startup/Cool Down Control Module CheckThermistor Check Unit Not Cooling Diagnostic ChartDefrost Fails to Terminate Evaporator is Frozen UpReplacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge BrazingPage Door Re-Hinging Important Notes for Component ReplacementMaintenance CleaningShutdown and Long Storage

73183 specifications

The Hoshizaki 73183 is a state-of-the-art ice machine that has garnered attention in the foodservice industry for its reliability and efficiency. Renowned for its compact design, the model is particularly well-suited for restaurants, bars, and cafes where space is often at a premium. One of the standout features of the Hoshizaki 73183 is its capability to produce high-quality cube ice, essential for various beverages and food presentation.

One of the primary technologies that sets this ice machine apart is the Kold-Draft ice production method. This technology ensures that the ice produced is not only clear and hard but also lasts longer in drinks, preventing dilution. The 73183 model is capable of producing up to 800 pounds of ice in a 24-hour cycle, making it a reliable choice for businesses requiring a high volume of ice throughout the day.

Energy efficiency is another hallmark of the Hoshizaki 73183. The unit operates with a low energy consumption rate, aligning with today’s demand for sustainable ice production solutions. It is equipped with efficient compressor technology, which reduces operational costs without compromising performance. In addition, the machine utilizes an advanced air-cooled condenser system, making it optimal for various ambient conditions while ensuring consistent ice output.

Durability and ease of maintenance also characterize the Hoshizaki 73183. Constructed with stainless steel, the unit is not only aesthetically pleasing but also resistant to corrosion and wear, ensuring longevity in a demanding kitchen environment. Furthermore, the machine features an easy-to-access design that simplifies cleaning and maintenance, promoting optimal hygiene and performance.

The unit also integrates user-friendly digital controls, allowing operators to monitor ice production rates and make adjustments as needed. An intuitive display provides real-time status updates, ensuring that businesses can always meet their ice needs.

In summary, the Hoshizaki 73183 ice machine combines innovative technology with robust design, making it an ideal choice for businesses seeking a reliable, efficient, and high-performing ice production solution. Its remarkable features and characteristics firmly establish it as a leading option in the competitive landscape of commercial ice machines.
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