Hoshizaki AM-50BAE-ADDS, AM-50BAE-DS service manual

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c)WV Diagnosis: Check that water enters the water tank. If not, check that the water supply line shut‑off valve is open and screens or external filters are clear. Check for 115VAC at CB C2 (BK) to neutral (W) and CB A2 (V) to neutral (W). If 115VAC is not present at CB C2 (BK) to neutral (W), check wiring from BC. If 115VAC is present at CB C2 (BK) to neutral (W) and not at CB A2 (V) to neutral (W), replace CB.

If 115VAC is present and WV does not energize, check WV coil continuity. If open, replace WV.

d)FM and PM Diagnosis: Confirm FM and PM de-energize. If not, check for 115VAC at

CB A1 (LBU) to neutral (W) and CB B1 (P) to neutral (W). If 115VAC is present at CB A1 (LBU) and not at CB B1 (P), CB is still in freeze cycle or CB X1 relay is sticking. Replace as needed.

e)Normal Harvest Cycle Termination Diagnosis: For a thermistor check, see

"II.D. Thermistor Check." If evaporator is warming, thermistor reading is correct, and harvest does not terminate, replace CB.

6) Normal Freeze Cycle. Comp continues. FM and PM energize. HGV and WV de‑energize. CB monitors the cooling of the evaporator via the thermistor located on the evaporator for freeze termination. When the thermistor drops to 27°F (-3°C), CB reads 6.8 kΩ from the thermistor and starts 3-min. FT. 27°F (-3°C) or lower must be maintained the entire 3 min. If reading rises above 27°F (-3°C) before 3-min.

FT terminates, 3-min. FT resets. When 27°F (-3°C) or lower is maintained for 3 min., 5-min. FTT starts.

a)Comp Diagnosis: If Comp de-energizes, check PTC relay continuity. If open, replace PTC. If closed, check Comp external protector and motor winding continuity. Replace as needed. If Comp is energized but evaporator is not cooling, check for an inefficient Comp. See "VIII.B. Performance Data."

b)FM and PM Diagnosis: If FM and PM do not energize, check for 115VAC at CB

B1 (P) to neutral (W) and CB A1 (LBU) to neutral (W). If 115VAC is present at CB

B1 (P) to neutral (W) and not at CB A1 (LBU) to neutral (W), replace CB. If 115VAC is present at CB A1 (LBU) to neutral (W), check FM or PM motor winding continuity, fan blade or PM impeller for binding, and PM capacitor.

c)HGV and WV Diagnosis: Confirm HGV and WV de-energize. If HGV is energized, check for 115VAC at CB B1 (P) to neutral (W). If 115VAC is present after PM energizes, replace CB. If 115VAC is not present and HGV is bypassing, replace

HGV. If WV is energized, check for 115VAC at CB A2 (V) to neutral (W). If 115VAC is present, replace CB. If 115VAC is not present and WV is leaking by, replace WV.

d)Normal Freeze Cycle Termination Diagnosis: 5-min. FTT terminates, harvest cycle starts. If not, check evaporator temperature where thermistor is mounted and check the thermistor. See "II.E. Thermistor Check." If evaporator temperature is below 27°F

(-3°C) for more than 8 min. and freeze does not terminate, replace CB.

7)Shutdown. When the appliance is running, hold ice in contact with the thermostatic bulb. BC switch opens within 10 sec., shutting down the appliance. BC is factory set and generally no adjustment is required. However, adjustment may be needed in some conditions, particularly at higher altitude locations.

Legend: BC–bin control; CB–control board; Comp–compressor; FM–fan motor; FT–freeze timer; FTT–freeze termination timer; HGV–hot gas valve; HT–harvest timer; PM–pump motor; WV–inlet water valve; WVT–inlet water valve timer

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Contents AM-50BAE AM-50BAE-DS AM-50BAE-AD AM-50BAE-ADDS Hoshizaki AMERICA, INC Contents Important Safety Information Page Page Construction Water/Refrigeration Circuit Diagram Cycle DiagnosisService Diagnosis Diagnostic Procedure Auxiliary Code C-0 and Earlier Page Page Diagnostic Procedure Auxiliary Code C-1 and Later Page Page Bin Control Check Thermistor Check No Ice Production Diagnostic TablesNo Ice Production Possible Cause Freeze-Up Possible Cause Harvest Cycle Freeze-UpFreeze Cycle Low Ice Production Possible Cause Long Harvest Cycle Low Ice ProductionLong Freeze Cycle III. Control Board Auxiliary Code C-0 and Earlier Control Board LayoutAuxiliary Code C-1 and Later VR1 Harvest Control Settings and AdjustmentsVR2 Freeze Control LED Lights Auxiliary Code C-1 and Later Control SwitchLED 1 24VAC LED 2 FreezeRefrigeration Circuit Service Information IV. Refrigeration Circuit and Component Service InformationRefrigerant Recovery Evacuation and Recharge R-134a BrazingComponent Component Service InformationMaintenance Schedule MaintenanceMaintenance Schedule Frequency Area TaskPriming Instructions Optional Drain Pump HS-0248 or HS-5061Discharge Hose VI. Preparing the Icemaker for Periods of Non-Use VII. Disposal 238 227145 200Wiring Diagrams Auxiliary Code C-1 and Later HS-0248 and HS-5061 Optional Drain Pump
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AM-50BAE-DS, AM-50BAE-ADDS, AM-50BAE, AM-50BAE-AD specifications

The Hoshizaki AM-50BAE ice maker stands out in the market for its efficiency and reliability, making it a popular choice among businesses seeking to provide high-quality ice for various applications. This compact and aesthetically pleasing machine is designed for ease of use, combining innovative technology with solid construction.

One of the key features of the Hoshizaki AM-50BAE is its ability to produce up to 55 pounds of crescent-shaped ice daily. This type of ice is not only visually appealing but also perfect for beverages, ensuring efficient cooling and presentation. With an ice storage capacity of about 22 pounds, this machine is well-suited for small to medium-sized establishments, including cafes, bars, and restaurants, where space is often at a premium.

The AM-50BAE employs Hoshizaki’s unique Smart Design, which includes a vertical evaporator that allows for improved ice production and longevity. This innovative evaporator design minimizes ice build-up, thereby reducing maintenance needs. In addition, the unit's durable stainless steel exterior ensures it can withstand the rigors of a busy commercial environment while maintaining a sleek and professional appearance.

Moreover, the Hoshizaki AM-50BAE features an advanced ice-making process that utilizes a cycle method, which optimizes efficiency and ensures consistent ice quality. It incorporates a robust water filtration system that enhances the purity of the ice produced, addressing the growing demand for clean and safe ice in the food service industry.

Another notable characteristic of the AM-50BAE is its energy efficiency. It is designed to be environmentally friendly, utilizing R-404A refrigerant and consuming minimal electricity, thus helping businesses save on operational costs while also reducing their carbon footprint.

With user-friendly controls, the Hoshizaki AM-50BAE is simple to operate and maintain. Regular cleaning and maintenance tasks are straightforward, allowing businesses to focus on serving their customers rather than dealing with complex machinery issues.

In summary, the Hoshizaki AM-50BAE ice maker is a reliable, efficient, and aesthetically pleasing solution for any establishment that requires a steady supply of high-quality ice. Its innovative features, advanced technology, and commitment to energy efficiency make it an excellent investment for food service professionals looking to enhance their beverage offerings.
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