This document describes the Midea Storage Electric Water Heater, model D10-20VD, an appliance designed for heating water for household use.
Function Description
The Midea Storage Electric Water Heater is an electrical appliance that heats and stores water. It is designed to provide hot water for various household needs. The heater operates by filling with water, which is then heated by an internal heating element. A thermostat automatically controls the water temperature, switching the heating element on and off to maintain the set temperature. The device includes a pressure relief valve, which is a critical safety component designed to release excess pressure from the inner container, preventing potential damage or accidents. Water may drip from this valve during heating, which is considered normal. The heater is equipped with a thermal switch that cuts off power to the heating element in case of water overheating or absence of water, ensuring safety.
Usage Features
Before initial use or after maintenance, the water heater must be completely filled with water. To do this, open at least one outlet valve at the heater's outlet and then open the inlet valve. Water flowing out of the outlet pipe indicates that the heater is fully filled, at which point the outlet valve can be closed. During normal operation, the inlet valve should always remain open.
The water heater is controlled via a knob on its front panel. This knob allows users to increase or decrease the desired water temperature setting. Once the supply plug is inserted into a socket and the indicator lights up, the thermostat takes over temperature control. The "White (up)" and "White (down)" LEDs remain illuminated when the system has power. A green LED will turn off when the water temperature reaches the user-defined setting, signaling the end of the heating phase.
The hot water from the heater can reach temperatures up to 75°C. Users are advised to adjust the water temperature to a suitable level to avoid scalding, especially during initial use. For multi-way supply systems, specific pipeline connection methods are illustrated in the manual to ensure proper functionality.
Maintenance Features
Regular maintenance is crucial for the safe and reliable operation of the Midea Storage Electric Water Heater.
Safety First: Always cut off the power supply before performing any maintenance to prevent electric shock.
Power Connection Check: The power plug and outlet should be checked frequently to ensure secure electrical contact and proper grounding. The plug and outlet should not heat excessively.
Draining Water: If the heater is not going to be used for an extended period, particularly in regions with low air temperatures (below 0°C), it is necessary to drain the water from the heater. This prevents damage caused by water freezing inside the internal tank. Water can be drained from the pressure release valve by twisting off its thread screw and lifting the drain handle upwards. The drainage pipe connected to the pressure release hole must be kept sloping downwards and in a frost-free environment.
Cleaning and Inspection: To ensure long-term reliable operation, it is recommended to regularly clean the internal tank and remove any deposits from the electric heating element. The magnesium anode should also be checked for its condition (whether it is fully decomposed or not) and replaced if necessary. The frequency of tank cleaning depends on the hardness of the water in the area. This cleaning should be performed by specialized maintenance services.
Pressure Relief Valve Maintenance: The pressure relief valve needs to be checked and cleaned regularly to ensure it is not blocked. The pressure release hole must never be blocked, as this could damage the heater or lead to accidents. If a large amount of water leaks from the valve, contact customer care for repair.
Thermal Switch Reset: The water heater is equipped with a thermal switch that automatically cuts off power if the water overheats or if there is no water in the heater. If the heater is connected to the mains but water is not heated and the indicator light is off, the thermal switch may have tripped. To reset it:
- De-energize the water heater.
- Remove the side/lower cover plate.
- Press the button located at the center of the thermal switch. If there is no clicking sound upon pressing, wait until the thermal switch cools down to its initial temperature.
Non-professionals are not permitted to disassemble or reset the thermal switch. For such issues, contact professionals for maintenance.
Troubleshooting: The manual provides a troubleshooting guide for common issues such as the heating indicator light being off, no water coming from the hot water outlet, excessively high water temperature, or water leaks. In most cases, professional repair or adjustment of water supply conditions is recommended.
Installation Considerations for Maintenance: When determining the location for installation, ensure there is a clearance of at least 0.2m on the right side of the electric heater to facilitate maintenance if needed. Only use accessories provided by the manufacturer for installation, and ensure the support is firm and reliable to prevent the heater from falling.
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