Fault code of Kangbao gas water heater

The fault code of Kangbao gas water heater is 1, and E0 is the fault of outlet water temperature sensor; 2.E 1 refers to ignition failure or accidental flameout (gas valve is not opened or gas stops in the middle); 3.E2 is a false fire fault; 4.E3 is overheating and dry burning fault (thermostat disconnected or loose wiring); 5, E4 temperature sensor failure; 6, E5 water heater air pressure switch failure; 7.E6 is the over-temperature protection of water heater; 8.E7 belongs to the fault of solenoid valve. 9.EE display will shut down for 20 minutes regularly. Solution: 1, the outlet water temperature sensor is faulty and the water heater cannot be used. Timely inspection, maintenance and replacement. 2. In case of ignition failure or flameout, turn off the gas and water heater first, pull out the connecting pipe, connect it firmly, and then try to strike a light; Check whether the ignition indicator is on. If it is on, the igniter is normal. If it doesn't light up, check whether the battery is in good condition. If the battery is faulty, it needs to be replaced with a new one. If the solenoid valve of the gas water heater is broken, resulting in ignition failure, please ask professional maintenance personnel to check the solenoid valve, and replace it in time if it is seriously damaged and endangers safety; The water diaphragm of the water-gas linkage valve of the water heater is aging and cannot be ignited. Water diaphragm is an important part of the project. If the water heater is used for a long time, it will age if it is not inspected and maintained in time, so it is necessary to replace the water diaphragm in time. 3. Turn off the power supply in time in case of false fire failure, and check the line maintenance. 4. Before use, turn off overheating and dry burning for 30 minutes, and lower the temperature. 5. Replace the sensor. 6. Replace the air pressure switch. 7. Turn off the water heater and use it after cooling. 8. Replace the solenoid valve. 9. Cancel the planned shutdown mode.