Typically, electric hot water boilers should be cleaned after about two to three years. If you encounter issues such as high electricity consumption or insufficiently hot water output, it is advisable to clean them immediately.Boiler CleaningTo prevent energy waste, here is an introduction to the specific methods and key points for cleaning this type of boiler:　

Open the water replenishment valve until the pressure reaches 2BAR, then open the floor heating or radiator vent valve at the system's end to drain the dirty water.

Once the wastewater has been fully drained, close the drain valve and replenish the water until the pressure reaches 2BAR.

Repeatedly open the oil valve, then perform water refilling and draining, repeating this process multiple times, and finally announce that the system is complete with cleaning.

After flushing, refill with water and then vent to approximately 1.5 bar.

During operation, keep a regular check on the system's water pressure for the induction cooktop, which should be maintained at around 1.5.

The shell must be regularly descaled to prevent overheating due to electromagnetic boiler heat dissipation.

If the electric boiler is not used for an extended period, the valve and power should be turned off to drain the water.