This product uses an on-demand, in-line heating system. A temperature variation of up to ±5.4°F (±3°C) is normal, and the actual temperature can also be affected by room temperature. Let the water run for 3–5 seconds to warm up the internal water path before filling your cup. Prewarming the cup can also help maintain the serving temperature.

To reduce the risk of steam burns, the KEI906 limits the maximum dispensing temperature to approximately 198–205°F (92–96°C), depending on room temperature. This range is suitable for preparing most tea, coffee, powdered milk, and similar beverages.

For first-time use, check the following:

1. Make sure the water tank is filled.

2. Make sure the water tank is installed correctly and fully seated.

After continued use: If the unit stops dispensing after a period of use, suddenly spits water, or overflows, clean and descale the unit first. If the problem continues, contact Customer Support for a complimentary replacement unit.

Possible cause 1: Pump running dry or restricted water intake: Over time, small particles may collect inside the inlet pump or partially block the water path. Insufficient incoming water can create an air-and-water mixture that surges or spits during heating. This is more likely after repeated high-temperature dispensing, when the water temperature is high but water pressure is low.

Possible cause 2: Deformed outlet elbow: Extended operation at high temperatures may cause the silicone outlet elbow to deform or age because of repeated heating and cooling. This can make the flow uneven or misdirected and may cause splashing.

Check the following possible causes:

• The power cord is not connected, or the wall outlet has no power.

• The circuit breaker or GFCI has tripped.

• An internal safety fuse or protector has opened. Contact Customer Support for service.

Try the following steps:

1. Dispense boiling water into a heat-safe container with a small amount of tea leaves and let it steep for 30 minutes to help absorb odors. Do not place tea leaves directly in the water tank.

2. Fill the water tank, then press and hold the “Volume” button for 3 seconds to force-drain any water left inside the unit. Rinse the tank again and replace the filter.

3. Clean the tank and descale the unit regularly to help prevent odors from developing.

Filter information and purchasing guidance:

• UR05: Includes a built-in activated carbon filter that helps reduce odors and impurities. Replace it every 1–2 months.

• KEI906: The new production batch includes a built-in activated carbon filter. It is compatible with BRITA and other standard filters, which are sold separately.

• For the best filtration performance, replace the UR05 activated carbon filter every 1–2 months.

• ZACHVO replacement filters are available from our Amazon store or official website.

Wash the water tank, tank lid, drip tray, and filter holder before first use. Before installing the filter, rinse it under clean water to remove any activated carbon dust that may remain on the surface. Then soak the filter in clean water for a few minutes to help it begin filtering effectively.

A new filter contains activated carbon media, so a small amount of carbon dust or trapped air may be present during first use. This is normal. Rinsing and briefly soaking the filter helps remove carbon fines, release trapped air, and bring the filter to a stable operating condition more quickly.

After rinsing and soaking the filter, install it securely on the filter holder inside the water tank, then fill the tank with clean tap water. When reinstalling the tank, make sure it is stable, fully seated on the base, and positioned correctly. An improperly installed tank may cause no water flow, leaks, or improper operation.

During first use, the first few cups of filtered water may contain a small amount of filter-media residue or air bubbles. This is normal. Discard the first two cups before drinking the filtered water for the best taste and filtration performance.

Yes. Select the largest volume and the Boiling Water mode to run one hot-water rinse cycle. Repeat the rinse 2–3 times if needed, discard all rinse water, then refill the tank with fresh tap water before normal use.

Activate cooling before dispensing cold water for the first time. Briefly press the “Cooling” button. The blue snowflake on the display will flash to show that cooling is in progress. The first cooling cycle takes approximately 40–50 minutes. Cooling is complete when the blue snowflake remains solid.

The ZACHVO filter uses a deeper, multi-stage filtration structure. Water moves through several layers of filter media, so the flow may be slower than with a basic high-flow filter. The additional contact time helps reduce odors, chlorine taste, impurities, and fluctuations in water quality. The design prioritizes consistent filtration and better-tasting water rather than maximum flow speed.

The Child Lock may be active. Tap or press and hold the “Lock” button to unlock the control panel, then try again. If Auto Child Lock is enabled, the unit will lock automatically after approximately 30 seconds of inactivity and must be unlocked before further use.

Make sure the water tank is properly seated on the base, the Child Lock is not active, and the tank contains enough water. If the tank is not seated correctly, lift it out and reinstall it securely. If the Child Lock is active, unlock the panel. If the tank is low, add drinking water.

The low-water alert appears when the water level falls below the MIN line. Add drinking water promptly, but do not fill above the MAX line, as overfilling may cause spills or interfere with normal operation.

Use the preset buttons for a large cup, approximately 16.9 fl oz (500 mL); a medium cup, approximately 11.8 fl oz (350 mL); or a small cup, approximately 6.8 fl oz (200 mL). You can also use the up and down buttons to adjust the volume in 1.7 fl oz (50 mL) increments, from approximately 5.1 fl oz (150 mL) to 33.8 fl oz (999 mL).

The unit stops automatically when it reaches the preset volume. To stop it early, tap the water-drop button again while water is dispensing.

Select a preset such as Boiling Water, Coffee, Tea, or Room Temperature, or fine-tune the temperature with the up and down buttons. A short press typically changes the setting by 9°F (5°C). Press and hold for finer adjustments in 1°C (approximately 1.8°F) increments.

No. Fill the water tank with drinking water only. Milk, juice, flavored beverages, and other liquids can clog the internal tubing, create odors, make the unit difficult to clean, or damage the appliance.

Possible causes include excessive scale buildup, incorrect supply voltage, very cold water in the tank, or a low room temperature. Descale the unit first and confirm that the local voltage matches the rating shown on the product label.

An on-demand heating system needs a brief warm-up period, so the water dispensed during the first 3 seconds may be slightly cooler. Some heat is also lost as the water passes through the outlet and is exposed to the air and cup. A cold cup or very cold source water can lower the measured temperature. Prewarm the cup with a small amount of hot water before filling it.

Make sure the cooling cycle has finished. The blue snowflake flashes while the unit is cooling and remains solid when cooling is complete. If the water does not cool after an extended period, the cooling system may need service. Contact Customer Support.

A flashing blue snowflake means the unit is actively cooling and is operating normally. Wait until the icon remains solid. If it continues flashing for an unusually long time and the water temperature does not drop, contact Customer Support for inspection.

It is not recommended. Operating the cooling function below 50°F (10°C) may cause internal icing or affect normal operation. Turn off cooling in low-temperature environments.

Minerals in water can build up inside the heating system over time. Scale can reduce heating efficiency, lower the dispensing temperature, and shorten the life of the unit. Descale every 1–2 months. If you live in a hard-water area, descale more frequently as needed.

Mix 1 L (33.8 fl oz) of water with food-grade white vinegar at a 20% ratio, or use a citric-acid cleaning solution. Pour the solution into the tank, select approximately 113°F/33.8 fl oz (45°C/999 mL), and start dispensing until the solution exits through the outlet. When descaling is complete, refill the tank with clean water and run the Boiling Water/16.9 fl oz (500 mL) setting 2–3 times, or until no cleaning odor remains.

Unplug the unit before cleaning. Do not immerse the main unit, control panel, power cord, or base in water. Do not use toxic or corrosive cleaners, abrasive pads, or steel wool. Clean the water tank with a damp cloth and a mild cleaning method, and wash the drip tray regularly.

Yes. Water and mineral spots can collect in the drip tray. Remove it regularly, wash it, and dry it thoroughly to help prevent odors and bacterial growth.

The recommended service capacity of a ZACHVO filter is approximately 150 L (39.6 gal). Replace the filter when it approaches that volume, or sooner if the flow slows down, the water develops an odor, or filtration performance declines. Actual filter life depends on local water hardness, water quality, household consumption, and frequency of use. Check the filter regularly and replace it as needed to maintain consistent filtration and taste.

Replacement filters are available from our Amazon store.

Make sure the power plug is fully inserted. The unit may be in Sleep mode; tap the water-drop button to wake the display. If the unit still does not start, the power cord, control panel, or internal circuitry may require service. Contact Customer Support.

Pour water into the tank slowly. If water is added too quickly, it may rise above the top edge and spill. Add no more than approximately 2 L (67.6 fl oz) at one time and pour slowly to prevent the water level from rising too quickly near the top of the tank.

The tank may be overfilled, improperly installed, or the unit may have an internal leak. Remove excess water, reinstall the tank, and make sure it sits level and securely on the base. If leaking continues, stop using the unit and contact Customer Support.

This can occur during first use, when the unit is used again after a long period of storage, or when the filter has reached the end of its service life. Repeat the first-use flushing procedure and rinse the tank with fresh water. If the odor remains, replace the filter.

E1 usually indicates an abnormal inlet NTC temperature-sensor reading. Turn off and unplug the unit, then reconnect the power and restart it. If E1 remains on the display, contact Customer Support.

E2 usually indicates an abnormal outlet NTC temperature-sensor reading. Unplug the unit and restart it. If E2 remains after the restart, contact Customer Support for inspection.

E3 may occur if the outlet temperature rises abnormally after two consecutive room-temperature dispenses. Try dispensing two cups of room-temperature water to allow the system to recover. If the error remains, contact Customer Support.

Because the unit dispenses hot water, the Child Lock helps prevent accidental operation and reduces the risk of burns. Keep it enabled in homes with children. The unit can also lock automatically after a period of inactivity for added everyday safety.

Place the unit on a level, dry, well-ventilated countertop. Leave at least 6 in (15 cm) of clearance between both sides of the unit and nearby walls for ventilation. Do not place it in a hot or humid area, in direct sunlight, near an open flame, or near flammable or explosive materials.

No. This product is designed for indoor household use. Do not use it outdoors or in areas exposed to high humidity, rain, or direct sunlight, as these conditions may affect performance or create a safety hazard.

Fill the water tank with clean water, keeping the level between the MIN and MAX lines, and place the tank correctly on the base. Plug in the power cord and turn on the power switch. All indicator lights will flash once, and then the Child Lock light will remain on. Press and hold the Child Lock button for 3 seconds to unlock the unit. When the Child Lock light turns off, the temperature, cup-volume, dispensing, and dispense-button indicators will turn on.

Select a volume of 1,000 mL (33.8 fl oz) and dispense heated water to rinse the internal tubing. After the rinse cycle, select the desired temperature and cup volume, then press the dispense button. To stop dispensing early, press the dispense button again; the water will stop immediately.

The water-drop indicator on the dispense button flashes rapidly while water is dispensing. After dispensing stops, the unit enters the locked state. Unlock it again before the next use.

The rated capacity is 2 L (67.6 fl oz) of clean water and 1 L (33.8 fl oz) of source water, with a capacity tolerance of ±5%. With a filter installed, the MAX capacity is 2 L (67.6 fl oz) and the MIN capacity is 0.5 L (16.9 fl oz). Without a filter installed, the MAX capacity is 2.3 L (77.8 fl oz) and the MIN capacity is 0.5 L (16.9 fl oz).

Reinstall the water tank and make sure it is positioned correctly on the base and fits snugly against it. If the unit continues to leak after the tank is reinstalled, stop using it and contact Customer Support. We will provide a complimentary replacement unit.

Rinse the water tank thoroughly with clean water. Do not use corrosive cleaners or hard, abrasive cleaning tools, as they may damage the tank and shorten its service life.

Use 10 g (0.35 oz) citric acid mixed with 500 mL (16.9 fl oz) of clean water, or use 5 g (0.18 oz) Espresso Machine Cleaning Powder. Pour the descaling solution into the tank, start heating, and dispense the solution. When the cycle is complete, rinse the internal tubing thoroughly with clean water to remove any cleaning residue.

Water hardness varies across North America. In hard-water areas, descale every 1–2 months. In soft-water areas, descaling every 4–6 months may be sufficient. For the best performance, follow the hard-water schedule if you are unsure of your local water hardness.

No. The Child Lock cannot be disabled permanently. Each time you use the unit, press and hold the Child Lock button for 3 seconds to unlock it. The unit will beep, the Child Lock indicator will turn off, and the other buttons will light up when the controls are ready.

Press and hold the Child Lock button for 3 seconds. The unit will beep, the other button lights will turn off, and only the Child Lock indicator will remain solid to show that the unit is locked.

Follow these steps before normal use:

1. Fill the water tank. After filtration is complete, press and hold the “Water” button for 3 seconds to drain the unit.

2. Fill the tank again and allow the water to filter. Unlock the control panel, select 95°C (203°F) and 500 mL (16.9 fl oz), then press the “Water” button to dispense until the CW light stops flashing.

3. Press the “Lock” button to activate the control panel. Select a volume of 150/250/350/500 mL (5.1/8.5/11.8/16.9 fl oz). Choose room-temperature water or hot water from 45°C to 95°C (113°F to 203°F).

4. Press the “Water” button to dispense. Press any button to stop dispensing.

A brief air-release sound during water production and filtration is normal for units equipped with an RO filter. If the sound becomes unusually loud, the filter may be clogged and may need to be replaced. Contact Customer Support to arrange shipment of a replacement filter.

Press and hold the “Clean” button to enter “Smart Rinsing Mode,” which automatically flushes the internal water path. The system also performs an automatic rinse every 24 hours. The automatic-rinse feature can be turned on or off manually.

Follow these maintenance guidelines:

• Descale the water tank every 3 months using citric acid or cleaning powder.

• Before long-term storage, drain the tank and all remaining internal water, unplug the unit, remove the filter, seal it, and store it in the refrigerator.

• Wipe the exterior with a damp cloth. Do not rinse the exterior directly with water, and do not use gasoline or other organic solvents.

Use the following replacement intervals as a general guide:

• PC cotton + activated carbon filter: every 8–12 months.

• RO membrane filter: every 18–24 months.

• C2 activated carbon block filter: every 8–12 months.

Actual replacement timing depends on local water quality and how frequently the unit is used.

The power may be disconnected, the button may not have been pressed correctly, or the filtered-water tank may be empty. Check the power connection, add water if needed, and try again.

Dry-boil protection may be active immediately after startup, or the tank may be empty. Dispense a small amount of room-temperature water first, then wait for filtration to finish before trying hot water again.

An odor can be normal during first use or after the unit has been unused for a long time. Run the first-use flushing procedure again. If the odor remains, replace the filter.

Check whether the drip tray is full and empty it if needed. If water is leaking from inside the unit, unplug it immediately and contact Customer Support.

Use the following guidance:

• E6: Overheating fault. Make sure the filter is installed correctly, then restart the unit.

• E1/F1/E5/E8/H8: Possible sensor, heating-module, pump, or water-level detection fault. Restart the unit. If the code remains, contact Customer Support.

Some difference is normal. Room temperature, source-water temperature, and heat absorbed by the cup can affect the measured dispensing temperature. A small difference between the selected and actual dispensing temperatures is normal.

If the unit has not been used for more than 2 days, replace the water before using it again. If it will be unused for more than 1 week, drain all water, unplug the unit, remove the filter, seal it, and store it in the refrigerator. Repeat the first-use procedure before using the unit again.

Click the following link, or follow the instructions below: UR05 instructions

1.Fill with water: Open the water tank cover, pour the required volume of water into the tank and close the water tank cover. Note: The water level must be below the maximum water level. You can choose between the following two methods.

2.When using the machine for the first time, please follow the steps below to clean the inside of the machine (Repeat this operation 2-3 times):

① Long press”Flush” for 3s

② Click the “95°C”

③The machine dispenses boiling water and stops automatically after 2 mins.

BE CAREFUL WITH THE BURNS.

3.Take water

Be sure to connect the plug to the correct wall outlet and inject the required amount of water. Place your cup on the removable water tray and make sure it is aligned with the water outlet. Select the temperature and amount of water you want according to the specific model by following the steps below:

Take room temperature water:

① Click to select water volume (150mL/300mL/500mL)

② Click the "Room" to get water

Long press the "Room" button for 3s to dispense 2000mL of room temperature water. Click any function button to stop water intake.

Get hot water:

① Click the "Lock" to unlock the child lock.

② Click to select water volume (150mL/300mL/500mL)

③ Click the "95°℃", "85°C" or "45°C" to get hot water

Click any function button to stop water intake.

Reinstall the water tank. Insert it vertically, align it with the guide slots, and press it down fully so the bottom is seated against the base. If the tank is not installed correctly, the unit may leak or fail to dispense. If leaking continues, contact Customer Support for a complimentary replacement unit.

Follow these steps:

1. Rinse the water tank directly with clean water to keep it clean.

2. The unit includes a one-touch automatic cleaning function. Mix 10 g (0.35 oz) citric acid - or 5 g (0.18 oz) Espresso Machine Cleaning Powder - with 500 mL (16.9 fl oz) of clean water. Pour the solution into the tank and press flush to start the automatic cleaning cycle. After the unit heats and dispenses the solution, rinse it thoroughly with clean water.

3. Water hardness varies across North America. Descale every 1–2 months in hard-water areas and every 4–6 months in soft-water areas. For the best performance, follow the hard-water schedule if you are unsure of your local water hardness.

Click the following page for detailed replacement instructions: filter replace instructions

Possible causes include a loose or disconnected power plug, a button that was not pressed correctly, or an empty water tank.

1. Make sure the power plug is fully inserted and not loose.

2. Tap the button again. After filling the tank, water can be dispensed when the “⊥” indicator turns off.

3. If the problem continues, contact Customer Support.

The unit may enter dry-boil protection when it is connected to power for the first time or reconnected after being unplugged. The Child Lock may also be active.

1. Dispense one small cup of room-temperature water, then try dispensing hot water again.

2. Press the “Lock” button to unlock the Child Lock.

3. If the problem continues, contact Customer Support.

Click the following page for the cause of each error code and the recommended solution: UR05 error code troubleshootings