It's normal for water to contain trace minerals naturally. Magnesium and calcium can form white sediment when heated. This sediment is harmless when consumed in small amounts. However, we strongly recommend performing a major maintenance every four years to ensure the longevity and sanitation of your device.

GD series water dispensers earned the "Energy-Saving" label from the Ministry of Economic Affairs Taiwan, which consume only 0.65 kWh a day in standby mode.

For safety reason, when the water heating process continues more than an hour, it triggers a protective mechanism to stop heating, and shows 'E2' on touchscreen.

If this error continues, please contact your maintenance personnel for an on-site inspection.

It could be that the hot water tube was bent during installation, causing back pressure and resulting in leaking. Please turn off the the water source switch and unplug the power cord from the socket.

Then, please contact your maintenance personnel for an on-site inspection.

To prevent the issues like excessive pressure and sewage backflow, all GD series hot tanks are equipped with pressure relief system. As a result, during the heating process, the steam converts to water and is discharged from the faucet which is a normal circumstance. This can also happen if the water input pressure is below 20 PSI; adjusting the pressure appropriately can fix the problem in this case.

The actual temperature of the hot water is affected by the ambient temperature of the tube connecting the hot tank to the faucet. The longer the tube, the bigger the effect.

If the temperature display shows "--", it may be due to a sudden power outage followed by a quick restoration, triggering the safety mechanism. To fix this, hold the power-saving button for 6-7 seconds to restart the faucet.