Question 1

why is my ice tasting weird, kind of plastic-y or like the last thing i cleaned it with?

Accepted Answer

DIAGNOSIS The "plastic-y" or chemical taste in your Aglucky HZB-12B ice maker is typically caused by one of two issues: off-gassing from the food-grade plastics during the first few weeks of use, or a buildup of biofilm and residual cleaning agents trapped in the internal water lines. Because this machine uses a recirculating pump system, any residue from a previous cleaning cycle—such as vinegar or dish soap—can become trapped in the narrow tubing and the reservoir's corners, leaching back into the water during every freeze cycle. To confirm the source, fill the reservoir with distilled water and run two full cycles. If the taste persists, the issue is a residue buildup in the internal plumbing or a reaction between the plastic components and your local water mineral content. If the taste disappears, the issue was likely contaminated water or a surface-level residue in the tank that requires a deeper chemical neutralize. FIX To eliminate chemical tastes and neutralize the plastic scent, you must perform a deep-clean desorption process using a sodium bicarbonate (baking soda) solution. This neutralizes acidic residues and lifts oils from the plastic walls. Empty the ice basket and drain all remaining water from the reservoir. Wipe the interior of the tank with a lint-free microfiber cloth to remove any visible slime or scale. Mix 2 tablespoons of aluminum-free baking soda into 2 liters of warm (not boiling) distilled water. Stir until the powder is completely dissolved to avoid clogging the internal pump. Pour the solution into the reservoir and start the ice-making process. Allow the machine to complete 3 full cycles of ice production. Do not consume this ice; discard it immediately after each cycle. Drain the reservoir completely. Use a damp cloth to wipe the ice-drop chute and the sensing arms, as these areas often trap odors. Fill the reservoir with fresh, filtered water and run 4 consecutive "flush" cycles. This ensures all baking soda residue is purged from the internal tubing and the evaporator pins. Allow the machine to air dry with the lid open for 2 hours before resuming normal operation. IF THAT DIDN'T WORK Switch to Distilled Water: If you have hard water, minerals can react with the plastic lining of the HZB-12B, creating a metallic or "chemical" taste. Using distilled water for two weeks will determine if the taste is caused by a reaction between your tap water and the machine's internals. Perform a Citric Acid Flush: If the taste is more "sour" or like old cleaning products, use a mixture of 1 tablespoon of food-grade citric acid per quart of water. Run two cycles to break down calcium deposits that may be trapping odors in the tubing. Deep Clean the Ice Basket: Often, the taste isn't in the ice itself but is absorbed from the plastic ice basket. Soak the basket in a mixture of warm water and mild detergent, scrub with a soft brush, and rinse until no soap scent remains. Check for External Contaminants: Ensure the machine is not placed under a cabinet where paint fumes or cleaning chemicals (like oven cleaner or bleach) are being sucked into the air intake vents, as the ice can absorb airborne odors during the freezing process. HEADS UP Never use bleach or harsh abrasive scrubbers inside the reservoir; this can scratch the plastic, creating microscopic grooves where bacteria and odors can permanently lodge. Empty and rinse the water reservoir every 48 hours, even if it is still full, to prevent the growth of biofilm which causes a "musty" taste. Always use filtered or distilled water to prevent scale buildup on the evaporator pins, which can lead to inefficient freezing and trapped odors. Avoid leaving ice in the basket for more than 24 hours; the ice will begin to absorb smells from the surrounding environment and the plastic basket itself.

Question 2

it keeps giving me the E1 error code and shutting down after a few minutes.

Accepted Answer

DIAGNOSIS The E1 error code on the Aglucky HZB-12B indicates a malfunction with the evaporator temperature sensor. This occurs when the control board detects an abnormal temperature reading—either because the unit is overheating due to poor airflow or because the sensor itself is failing to report the correct temperature to the system, triggering a safety shutdown to prevent compressor damage. FIX Most E1 errors are caused by environmental heat buildup rather than hardware failure. Follow these steps to resolve the issue: Power Cycle: Unplug the unit from the wall for at least 10 minutes to clear the error memory and allow the refrigerant to stabilize. Optimize Airflow: Ensure there are at least 4 to 6 inches of open space on all sides and the rear of the machine. Do not place the unit inside a cabinet or directly against a wall. Clear the Vents: Check the intake and exhaust vents for dust buildup or obstructions. Use a vacuum or compressed air to clear any debris. Check Water Levels: Ensure the reservoir is filled with fresh, cold water. Using lukewarm water increases the load on the cooling system and can trigger temperature alerts. IF THAT DIDN'T WORK If the error persists after improving ventilation, the issue is likely internal: Sensor Calibration: If the unit is brand new, the sensor may be defective. Contact the manufacturer for a replacement. Wiring Inspection: For advanced users, remove the rear panel to ensure the sensor wires are securely connected to the main PCB and have not been pinched or frayed. Hard Reset: Try running the unit in a cooler room (below 75°F) to see if the error clears; if it does, the unit is simply struggling with your current ambient temperature. HEADS UP Avoid placing the ice maker on a countertop next to heat-generating appliances like dishwashers, ovens, or toasters. High ambient temperatures force the compressor to work harder, which will lead to frequent E1 shutdowns and shorten the lifespan of the device.

Question 3

the power button does nothing, screen is totally dead. checked the outlet and it's fine.

Accepted Answer

DIAGNOSIS The total loss of power and a dead display on the Aglucky HZB-12B usually indicates a failure in the electrical continuity path between the wall outlet and the main control board. Since the outlet is verified, the issue is typically a tripped internal thermal overload protector or a blown surface-mount fuse on the PCB. This occurs most frequently when the unit is operated in an environment exceeding 90°F (32°C) or if the condenser coils are clogged with dust, causing the compressor to overheat and trigger a safety shutdown. Another common culprit is a loose connection at the power inlet terminal. Because this model uses a detachable power cord, the tension pins inside the socket can lose contact over time due to vibration during the ice-dropping cycle. If the unit was recently cleaned with a damp cloth, moisture may have seeped into the control panel housing, causing a momentary short that tripped the internal protection circuit to prevent a full board burnout. FIX Follow these steps to restore power to the unit. Be careful when working with electrical components to avoid shock. Completely disconnect the power cord from the wall outlet and the back of the machine. Inspect the pins of the detachable power cord for any signs of charring, bending, or oxidation. If the pins look dull or blackened, clean them with a cotton swab dipped in 90% isopropyl alcohol. Locate the power inlet socket on the rear of the HZB-12B. Use a flashlight to ensure no debris or plastic shards are obstructing the socket. Firmly push the power cord into the machine's socket until you hear a distinct click. A loose fit here is the primary cause of "dead" screens. Plug the unit into a different outlet—specifically one not shared with a high-draw appliance like a microwave or toaster—to rule out a tripped GFCI outlet. Press and hold the Power button for a full 5 seconds. If the screen flickers but doesn't stay on, the unit is likely in a "protection mode" and needs a hard reset. IF THAT DIDN'T WORK Perform a Hard Thermal Reset: Unplug the machine and leave it disconnected for exactly 60 minutes. This allows the thermal overload protector (a bi-metallic strip) to cool down and snap back into the closed position. If the unit was running in a hot garage or tight cabinet, this is the most likely solution. Check for "Ice Jam" Lockout: In some rare cases, if ice has frozen solidly around the sensing pins, the board may enter a safety lockout. Use a hairdryer on a low-heat setting to gently warm the exterior of the control panel and the top of the ice basket area for 2-3 minutes, then attempt to power on. Inspect the Internal Fuse: If you are comfortable opening the chassis, remove the base screws and locate the main PCB. Look for the small glass or ceramic fuse. Use a multimeter to check for continuity. If the fuse reads "OL" (Open Loop), the fuse has blown and must be replaced with an identical amperage rating to restore power. Test with a Universal C13 Cable: The HZB-12B uses a standard power cable. Try a compatible cable from another small appliance (like a computer monitor or printer) to determine if the failure is within the cable's internal wiring rather than the machine itself. HEADS UP Avoid placing the unit directly against a wall; maintain at least 6 inches of clearance around the vents to prevent the thermal protector from tripping again. Never use a surge protector or extension cord with this unit; plug it directly into a grounded wall outlet to prevent voltage drops that can crash the control board. Clean the exterior vents every 30 days using a vacuum or compressed air to ensure the compressor doesn't overheat. If the unit is under warranty, do not open the chassis or replace the fuse yourself, as breaking the factory seal will void your replacement options.

Question 4

how do i actually clean this thing? the manual just says 'clean regularly' but i see mold in the corners.

Accepted Answer

DIAGNOSIS The mold you are seeing, likely a combination of black mold and the pink-hued Serratia marcescens, occurs because the Aglucky HZB-12B has several "dead zones" where water stagnates. Specifically, the corners of the removable water reservoir and the area where the water pump intake meets the base of the unit are prone to biofilm buildup. Because this machine uses a small internal pump to move water over the evaporator pins, any organic particles or mineral deposits create a sticky surface for spores to cling to. Confirmation of this issue is usually evident by a slimy texture on the plastic walls of the tank or a faint "musty" smell in the ice cubes. If you see pink streaks in the corners, it is a bacterial colony feeding on the fatty acids in the water; if it is black, it is fungal growth. This is exacerbated if the machine is left sitting with water in the tank for more than 48 hours without operation, as the lack of circulation allows the biofilm to harden into the plastic seams. FIX To fully sanitize the HZB-12B, you must perform a deep mechanical scrub followed by a chemical flush. Do not use bleach, as it can degrade the internal silicone seals and leave a chemical taste in the ice. Tank Deep Clean: Remove the water reservoir. Mix 2 tablespoons of baking soda with 1 tablespoon of water to create a thick, gritty paste. Using a soft-bristled toothbrush, scrub every corner and seam of the tank, focusing specifically on the bottom edges where the plastic molds meet. Rinse with warm water and dry completely. Internal Descaling: Mix a solution of 1 part distilled white vinegar and 3 parts warm water. Fill the reservoir to the "MAX" line with this mixture. The Cycle Run: Plug in the unit and press the "ON/OFF" button. Allow the machine to complete two full ice-making cycles. The vinegar will break down the calcium carbonate scale that protects mold colonies on the evaporator pins. The Purge: Discard all vinegar-infused ice. Fill the tank with fresh, filtered water and run three consecutive cycles. Discard all ice from these cycles to ensure no acetic acid residue remains. Exterior Venting: Use a vacuum or a can of compressed air to clear the dust from the side vents. If the vents are clogged, the compressor runs hotter, increasing the internal temperature and encouraging mold growth inside the chassis. IF THAT DIDN'T WORK Citric Acid Shock: If vinegar isn't removing the stains, use food-grade citric acid powder. Mix 2 tablespoons of citric acid into 1 liter of warm water. This is significantly more aggressive than vinegar for breaking down mineral-bonded biofilm. Run this through two full cycles and flush three times with fresh water. Hydrogen Peroxide Spot Treatment: For stubborn black mold in the tank corners that won't budge, use a 3% hydrogen peroxide solution on a cotton swab. Apply directly to the mold, let it sit for 10 minutes, then scrub with a toothbrush and rinse thoroughly. Pump Intake Cleaning: Use a thin pipe cleaner or a flexible bottle brush to gently reach into the water intake hole at the bottom of the unit (where the tank sits). Often, a "plug" of slime forms here, preventing the cleaning solution from circulating effectively. Replacement Reservoir: If the plastic has become pitted or "etched" and the mold keeps returning to the same spots, the plastic surface is compromised. At this point, the only permanent fix is to replace the water tank assembly to remove the porous areas where spores hide. HEADS UP Filter Your Water: Always use filtered water rather than tap. Tap water contains minerals and chlorine that can either promote scale buildup or degrade the internal gaskets over time. The 48-Hour Rule: Never leave water sitting in the HZB-12B for more than two days. If you aren't making ice, empty the tank and leave the lid open to air dry. Avoid Abrasives: Never use steel wool or scouring pads on the internal evaporator pins (the metal spikes). Scratching the coating will cause the pins to rust, which will contaminate your ice and potentially break the machine. Weekly Rinse: Perform a "quick rinse" every Sunday. Empty the tank, wipe it with a clean microfiber cloth, and refill with fresh water to prevent the biofilm from hardening.

Question 5

it's making a loud grinding or rattling noise, mostly during the harvest cycle when it twists the ice off.

Accepted Answer

DIAGNOSIS The grinding or rattling noise during the harvest cycle of the Aglucky HZB-12B is typically caused by mechanical interference during the rotation of the evaporator spikes. In this model, the harvest cycle involves a motor twisting the metal evaporator rods to release the ice cubes. When the noise occurs specifically during this phase, it indicates that the rotating assembly is either colliding with accumulated "ice bridges" (excess frozen water that has leaked and frozen outside the mold) or the plastic drive gear is slipping due to a lack of lubrication or a physical obstruction. Another common cause is the misalignment of the evaporator plate relative to the plastic housing. If the unit was bumped or if the internal supports have shifted, the metal spikes may be scraping against the interior plastic walls of the machine as they rotate. You can confirm this by observing the cycle through the top vent; if the noise coincides exactly with the moment the spikes begin to turn and you see the ice cubes struggling to drop, the issue is likely an ice blockage or a gear misalignment. FIX To resolve the grinding noise, you must perform a deep mechanical reset and a full thermal defrost to clear any hidden obstructions. Unplug the unit from the wall outlet immediately to prevent the motor from overheating while it is struggling against the obstruction. Remove the ice basket and dump all remaining ice. Use a soft cloth and lukewarm water to wipe down the interior walls, specifically focusing on the area where the evaporator spikes meet the plastic casing. Perform a "Deep Defrost": Leave the unit unplugged with the lid open for at least 3 to 4 hours. This ensures that any ice built up behind the plastic housing or inside the gear assembly—which isn't visible from the top—completely melts. Inspect the evaporator spikes for any bent metal. If a spike is slightly skewed, it will rattle against the housing. Carefully straighten any bent rods using small needle-nose pliers, applying very gentle pressure to avoid snapping the metal. Clear the drainage port. Use a pipe cleaner or a thin flexible wire to ensure the drain hole at the bottom of the reservoir is clear. If water backs up, it freezes around the rotating base, causing the grinding noise. Dry the unit completely with a microfiber cloth, plug it back in, and run one full cycle without adding extra ice to the basket to ensure the rotation is smooth. IF THAT DIDN'T WORK The gear motor drive assembly may have developed a flat spot or a stripped tooth. If the noise persists after a full defrost, the plastic gear that connects the motor to the evaporator plate is likely worn. This requires a partial teardleown of the chassis to inspect the white nylon gear. If you see plastic shavings (white powder) near the motor, the gear needs replacement. The internal refrigerant lines may have shifted, causing them to vibrate against the outer shell during the high-torque harvest phase. Check if the noise is a "metallic rattle" rather than a "plastic grind." If so, you can often dampen this by ensuring the unit is on a perfectly level, hard surface, as tilting the unit changes the center of gravity for the internal components. The water pump may be cavitating or sucking in air, which creates a rattling sound that mimics a gear grind. Try adding a small amount of distilled water and a teaspoon of white vinegar to the reservoir to clear any mineral scale buildup from the pump intake, which can cause erratic vibrations during the cycle transition. The unit may be suffering from "over-freezing" due to a faulty thermostat. If the ice cubes are too large or fused together, the motor will strain and grind to break them apart. Try lowering the ambient temperature of the room or moving the unit away from other heat-generating appliances to see if the harvest cycle becomes quieter. HEADS UP Never use sharp metal objects or screwdrivers to chip away ice from the evaporator spikes; you will puncture the refrigerant lines, which will permanently destroy the unit. Always use filtered water. Calcium and magnesium buildup from hard water create "scale" on the spikes, which increases friction and makes the harvest motor work harder, leading to premature gear wear. Ensure there is at least 6 inches of clearance around all sides of the machine. If the condenser coils overheat, the internal plastics can warp slightly, leading to the very scraping noises you are experiencing. Avoid overloading the ice basket. If ice piles up too high and touches the rotating spikes, it creates an immense amount of torque resistance, which can strip the plastic drive gears instantly.

Question 6

my ice maker just blinks the 'add water' light even though the tank is completely full.

Accepted Answer

DIAGNOSIS The "Add Water" indicator on the Aglucky HZB-12B is triggered by a magnetic float switch located in the internal reservoir. This float is a small, white plastic cylinder that slides vertically on a guide post. When the water level is sufficient, the float rises, triggering a reed switch that tells the control board the unit is ready to operate. When the light blinks despite a full tank, it means the float is physically stuck in the "down" position or the magnetic connection has been compromised. This failure is typically caused by calcium carbonate buildup (limescale) from hard water. Mineral deposits create a gritty friction layer on the guide post, effectively "gluing" the float in place. In some cases, a small piece of debris or a slime biofilm can lodge underneath the float, preventing it from rising. You can confirm this by looking into the reservoir; if the water is full but the white float is sitting at the bottom of its track, the sensor is failing to register the volume. FIX To resolve a stuck float and reset the sensor, follow these precise steps: Unplug the unit from the wall outlet to prevent electrical shorts while working with water. Remove the removable water tank if your specific sub-model has one, or clear the interior of any remaining ice cubes to gain a clear line of sight to the bottom of the reservoir. Locate the white plastic float cylinder. It is usually positioned near the water inlet/outlet area of the internal sump. Using a clean cotton swab or a thin plastic probe, gently push the float down and let it snap back up. Repeat this motion 10 to 15 times. You should feel a slight "click" or a smooth glide; if it feels gritty, it is clogged with minerals. If the float is stubborn, pour 1 cup of warm (not boiling) distilled white vinegar directly onto the float and the guide post. Let it sit for 15 minutes to dissolve the calcium deposits. Use a soft-bristled toothbrush to gently scrub the guide post and the sides of the float. Wipe the area clean with a damp cloth, refill the reservoir to the "Max" line, and plug the unit back in. IF THAT DIDN'T WORK Perform a full system descale. Mix a solution of one part white vinegar to three parts warm water. Fill the reservoir and run a full ice-making cycle. Discard the first three batches of ice. This removes internal scale from the pump and sensors that manual scrubbing cannot reach. Check for airlocks in the pump. If the unit was tilted during transport or cleaning, an air bubble can trap the water away from the sensor. Tilt the machine gently forward and backward while it is powered on to burp the air out of the internal plumbing. Inspect the magnetic reed switch. If the float moves freely but the light still blinks, the magnetic coupling may have failed. Use a small handheld magnet and move it slowly around the exterior of the plastic housing where the float resides; if the "Add Water" light turns off, the float's internal magnet has lost its potency and the sensor assembly needs replacement. Hard reset the control board. Unplug the unit for exactly 30 minutes. This clears the volatile memory of the HZB-12B logic board and forces a fresh sensor poll upon startup. HEADS UP Never use boiling water to descale the unit; this can warp the plastic reservoir and damage the silicone seals, leading to internal leaks. Always use filtered or distilled water to prevent the "Add Water" error from recurring. Tap water with high mineral content will cause the float to stick again within 30 to 60 days. Do not use harsh chemical detergents or bleach to clean the reservoir, as these can degrade the magnetic properties of the float sensor. Ensure the unit is placed on a perfectly level surface. If the machine is tilted, the float may lean against the guide post, creating friction that triggers a false "low water" reading.

Question 7

the ice cubes from my aglucky are coming out super thin and hollow, like shells.

Accepted Answer

DIAGNOSIS The formation of "shell-like" or hollow ice cubes in the Aglucky HZB-12B is a direct result of insufficient water volume reaching the evaporator fingers during the filling cycle. In a healthy unit, the water pump pushes a precise volume of water into the freezing chamber, filling the molds to the brim. When the ice is thin, it means the water is either draining too quickly or not filling the mold completely before the freezing cycle begins, leaving only a thin layer of ice clinging to the chilled metal pins. This is typically caused by mineral buildup (limescale) or debris obstructing the narrow water inlet nozzle or the internal pump filter. When calcium deposits narrow the aperture of the spray nozzle, the flow rate drops. Consequently, the sensor triggers the freezing process based on timing rather than volume, resulting in "ghost" cubes that lack a solid core. You can confirm this by listening to the pump; if you hear a strained humming sound but see only a trickle of water entering the mold, you have a blockage. FIX To restore full cube density, you must perform a deep chemical descale of the water delivery system. Unplug the unit from the wall outlet and remove the ice basket and the removable water reservoir. Mix a solution of 50% distilled white vinegar and 50% warm distilled water in a separate container. Pour approximately 500ml of this solution directly into the water reservoir and slide it back into the machine. Locate the water spray nozzle—the small aperture located just above the evaporator fingers. Use a soft-bristled interdental brush or a thin pipe cleaner dipped in the vinegar solution to gently scrub the opening of the nozzle to remove hardened calcium flakes. Plug the unit in and run a "Clean" cycle if available, or simply start a standard ice-making cycle. Let the vinegar solution circulate through the pump and the evaporator for at least two full cycles. Drain the vinegar solution completely by removing the rubber drain plug located at the bottom of the machine. Fill the reservoir with fresh, filtered water and run one final cycle to flush out any remaining acetic acid smell. IF THAT DIDN'T WORK Check the Water Level Sensor: If the sensor probes are coated in mineral film, the machine may "think" the reservoir is empty or full when it isn't, cutting the pump cycle short. Use a cotton swab dipped in rubbing alcohol to gently clean the two metal sensor prongs located inside the water tank area. Inspect the Pump Intake Filter: There is a small mesh screen where the pump draws water from the reservoir. If this is clogged with slime or sediment, the pump cannot move enough water to fill the molds. Use a toothpick to gently remove any debris from the mesh. Verify Ambient Temperature: If the room is excessively hot (above 90°F), the evaporator plate may not be reaching the critical temperature required to freeze the water quickly, causing the water to slide off the fingers before it can solidify, resulting in thin shells. Move the unit to a cooler area with at least 6 inches of clearance on all sides. Test Water Hardness: If you are using high-mineral tap water, the buildup happens almost instantly. Switch to bottled or RO (Reverse Osmosis) water for three cycles to see if the cube density improves. If it does, your local water is too hard for the standard pump flow. HEADS UP Avoid using dish soap or abrasive scrubbing pads on the evaporator fingers; scratching the coating can lead to "ice sticking," which prevents the cubes from dropping and can eventually bend the metal pins. Perform a vinegar descale every 30 days if you live in a hard-water area to prevent the nozzle from clogging permanently. Always ensure the rubber drain plug at the bottom is seated firmly; a slow leak here can cause the pump to suck in air, leading to inconsistent water levels and hollow cubes. Never use boiling water in the reservoir, as this can warp the plastic internal tubing and compromise the pump's seal.

Question 8

my aglucky hzb-12b ice maker is running but not making any ice at all, just humming.

Accepted Answer

DIAGNOSIS The humming sound indicates that the compressor is receiving power and attempting to operate, but the lack of ice production suggests a failure in the refrigeration cycle or the water delivery system. In the Aglucky HZB-12B, the most common cause for this specific symptom is "oil migration." If the unit was tilted, laid on its side, or shaken during shipping or relocation, the lubricating oil from the compressor can migrate into the capillary tubes. This creates a physical blockage that prevents the refrigerant from circulating, meaning the evaporator pins never get cold enough to freeze the water. Another possibility is an air lock in the internal water pump. If the pump is humming but not moving water onto the freezing pins, the unit will run indefinitely without producing a single cube. You can confirm the refrigeration issue by touching the metal evaporator pins after 15 minutes of operation; if they are room temperature while the compressor is humming, you have a refrigerant or oil blockage. If the pins are freezing cold but dry, the issue is the water pump or a sensor malfunction. FIX To resolve a refrigerant blockage caused by oil migration or to reset the internal pump, follow this precise sequence: Immediately unplug the Aglucky HZB-12B from the wall outlet. Do not leave it running, as running a compressor with a blockage can lead to permanent mechanical failure. Place the unit on a completely flat, level surface. Use a spirit level to ensure the machine is not tilted in any direction, as this affects the gravity-fed drainage and oil return. Leave the unit powered off and undisturbed for a minimum of 24 hours. This allows the compressor oil to naturally drain back into the sump reservoir via gravity. While the unit is off, empty the water reservoir and rinse it with warm water to ensure there are no mineral deposits blocking the intake filter. Refill the reservoir with fresh, filtered water to the "Max" line. Plug the unit back in and press the "ON/OFF" button. Allow the machine to run its first cycle without opening the lid for at least 90 minutes. IF THAT DIDN'T WORK Manual Pump Prime: If the pins are cold but no water is moving, the pump may have an air bubble. With the unit powered on, gently tilt the machine 15 degrees to the left and right several times. This can help "burp" the air out of the pump line and allow water to flow onto the evaporator. Deep Clean the Sensors: Use a cotton swab dipped in white vinegar to clean the "Ice Full" sensor (the infrared beam at the top of the basket area). If the sensor is dirty or obstructed, the machine thinks the basket is full and will run the compressor but refuse to pump water. Hard Reset: Unplug the unit and hold the power button down for 30 seconds to discharge the capacitors on the control board. Plug it back in and immediately select the "Small" ice setting to reduce the load on the pump for the first cycle. Check for Undersized Voltage: Ensure the unit is plugged directly into a wall outlet rather than a surge protector or extension cord. The HZB-12B compressor requires a specific voltage spike to start the cooling cycle; if it's underpowered, it will hum but fail to reach the critical temperature needed for freezing. HEADS UP Never use distilled water in the HZB-12B; the lack of minerals can actually interfere with the freezing process and the sensors. Use filtered tap water for best results. Avoid placing the unit in an enclosed cabinet or directly next to a heat source (like an oven). The compressor exhausts heat from the sides; if it can't breathe, the refrigerant won't condense, and ice production will stop. Clean the water reservoir weekly with a mild soap solution to prevent biofilm buildup, which can clog the small diameter intake hose leading to the pump. If you move the unit to a different room, always wait 2-4 hours before plugging it back in to prevent the oil migration issue described in the diagnosis.

Aglucky Countertop Ice Maker HZB-12B

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