1, circuit board failure: Generally speaking, the display screen of electric water heater is controlled by the circuit board. If the circuit board fails, it will cause the display screen to display 8888. The circuit board needs replacing.
2. The display screen is damaged: If the display screen of the electric water heater is damaged, 8888 will also be displayed. The monitor needs to be replaced.
3. Too high water temperature: If the water temperature of the electric water heater is too high, it will also cause the display screen to display 8888. Need to adjust the water temperature.
4. Power failure: If the power supply of the electric water heater fails, it will also cause the display screen to display 8888. Need to check whether the power supply is normal.