(1) E1: Leak.
(2) E2: Thermosensor failure.
(3) E3: Thermostat failure.
(4) E4: Water inlet timeout.
Water heaters that use electricity as energy for heating are often called electric water heaters. It is one of the three main water heaters, alongside gas water heaters and solar water heaters. Electric water heaters can be divided into three types according to heating power: water storage type (also called volumetric or thermal storage type), instant heating type and instant heating type (also called semi-water storage).
According to the heating power, electric water heaters can be divided into three types: water storage type (also called volumetric type or heat storage type), instant heating type and instantaneous heating type (also called semi-water storage type); type ofstorage Water type is the main form of electric water heater. According to different installation methods, it can be divided into vertical, horizontal, floor, trough and the latest embedded type. designed to be integrated into bathroom furniture. Depending on whether it is pressurized or not, it can be divided into open type (simple type) and closed type (pressurized type). According to the purpose of use, it can be divided into domestic and commercial type. According to the heating method, it can be divided into three types: magnetic energy, resistance wire and silicon tube.