1."E" and "G" Control Board without Harvest Pump Timer Diagnosis

3)Power On: Turn on the power supply, then move the control switch to the "ICE" position. A 5sec. delay occurs.

"E" Control Board: CB red "POWER OK" LED turns on.

"G" Control Board: CB red "POWER OK" LED and green "BC CLOSED" LED turn on.

Note: • CB red "POWER" LED remains on unless the 10.5VAC power supply is interrupted (K2 connector).

Check CB using the steps in "II.C. Control Board Check."

"G" CB: If yellow "BC OPEN" LED is on, check that CB red K4 jumper is in place.

a)Power On Diagnosis: If CB red "POWER OK" LED is off, confirm closed BC and 10A fuse is good. If BC is open, remove ice from bulb and warm bulb in hand. If BC does not close, replace BC. See "II.D. Bin Control Check." Check for 115VAC at control switch #1 (BR) to neutral (W) then at control switch #2 (P) to neutral (W).

If 115VAC is present on control switch #1 (BR) and not on control switch #2 (P), replace control switch. If 115VAC is present on control switch #2 (P), check for 115VAC at HPS (P) to neutral (W), then HPS (BK) to neutral (W). If 115VAC is present at HPS (P) and not at HPS (BK), HPS is open. See HPS Diagnosis below. If 115VAC is present at HPS (BK), check for 10.5VAC at CB K2 #1 (R) to CB K2 #2 (R).

If 10.5VAC is not present, confirm that the cleaning valve interlock switch is closed. Next, check CT continuity. If open, replace CT.

b)HPS Diagnosis: Confirm FM is energized and fan blade turns freely. Confirm condenser coil is not dirty. Confirm that the location meets installation requirements. See the appliance's instruction manual for details. Confirm there are no restrictions in the refrigeration circuit.

Harvest Cycle: HGV, strainer, or check valve.

Freeze Cycle: FM, FMR, TXV, HM, LLV, WRV, strainer, check valve, drier, damaged line set or fitting, and fan blade for binding.

Let refrigeration circuit pressures equalize. If HPS does not reset and pressures are equalized, replace HPS. If pressures are not equalized, reclaim refrigerant and diagnose refrigeration circuit restriction.

4)1-Minute Fill Cycle – LED 4 is on. WV energizes. After 1 min., CB checks for a closed FS. If FS is closed, harvest cycle begins. If harvest cycle begins (Comp, HGV, and FMR energize), continue to step 5. If FS is open, WV remains energized through additional 1min. fill cycles until water enters the water tank and FS closes (low water safety protection during initial start up and at the end of each harvest). Diagnosis: Check that water enters the water tank. If not, check that the water supply line shutoff valve is open and screens or external filters are clear. Check for 115VAC at CB K1 #6 (O)

to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present, and WV does not energize, check for 115VAC at WV. If 115VAC is present, check coil continuity. If open, replace WV. If the water tank fills, but the appliance fails to start harvest (Comp energized), check for open FS. See "II.E. Float Switch Check and Cleaning." If FS is closed and CB fails to start the harvest cycle after 1 min., replace CB.

20

Page 20
Image 20
Hoshizaki SRH/3 KM-1400SWH-M, SRH/3 KM-2100SWH3, SWH3-M KM-1601SAH/3 G Control Board without Harvest Pump Timer Diagnosis

SRH/3 KM-1900SAH/3, SRH3 KM-2500SWH3, SRH3 KMH-2000SWH/3, SWH/3, KM-1301SAH/3 specifications

The Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 are advanced ice makers designed for commercial use, addressing a wide variety of needs in restaurants, hotels, and bars. These models are known for their efficiency, durability, and innovative technologies that ensure the production of high-quality ice.

One of the standout features of these units is their ability to produce a high volume of ice, reaching up to 1,300 pounds per day, which is crucial for establishments with heavy ice demands. The machines utilize advanced cooling technology, allowing for faster ice production and minimizing the time required to refill ice bins. This makes them ideal for busy settings where speed and efficiency are paramount.

The KM-1301 series employs a unique stainless steel exterior that not only ensures longevity and resistance to corrosion but also enhances the aesthetic appeal of any commercial kitchen or bar. The interior is designed for easy cleaning, helping to maintain hygiene standards vital for food safety.

These ice makers utilize the proprietary Hoshizaki Cubelet Ice system, producing small, chewy ice cubes that are perfect for various beverages and food displays. The advanced design of the ice-making mechanism ensures that ice is formed quickly and efficiently, reducing energy consumption. Additionally, Hoshizaki’s CycleSaver technology optimizes the production process by reducing the amount of water used, making these machines environmentally friendly.

Another characteristic is their self-diagnostic capability, which allows for real-time monitoring of unit performance and quicker troubleshooting, minimizing downtime. The built-in alerts notify operators of any issues or maintenance needs, ensuring that the ice-making process remains uninterrupted.

The KM-1301 series also provides user-friendly controls that allow easy adjustments and monitoring of ice production settings. This flexibility enables businesses to meet varying ice demands based on seasonality or special events.

In summary, the Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 ice makers are exemplary choices for commercial ice production. With their high output, durable design, energy efficiency, innovative technologies, and user-friendly features, they cater effectively to the rigorous demands of the foodservice industry while maintaining a commitment to quality and sustainability.