1. The gas water heater shows E2, which may be abnormal wind pressure or fan failure, you can try the following methods to solve it:
1.Check whether the flue is blocked, if there is a blockage, dredge the flue.
2.Check the fan for damage, if it does, it needs to be replaced.
3.Check whether the air pressure switch is damaged, if it is damaged, the air pressure switch needs to be replaced.
4.If none of the above methods can solve the problem, it is recommended to contact professional maintenance personnel for maintenance.
2. If the electric water heater shows E2, it may be that the water temperature sensor is abnormal or the heating pipe is faulty. Here's how to fix it:
1.Check the power supply and circuitry: Make sure the power wiring of the electric water heater is properly connected and check for damaged or loose wires. If a problem is found, repair or replace the wire in a timely manner.
2.Check the temperature sensor: Locate the temperature sensor of your electric water heater, usually located near the hot water outlet. Check for damage or detachment of sensors. If there is a problem, it is recommended to replace the sensor.
3.Troubleshoot drainage: Check the drain for blockages.
4.Check the heating element: Disconnect the power supply to the electric water heater. Locate the heating element, which is usually located inside the water heater. Inspect the heating element for breakage or short circuits. Replace the heating element if necessary.
5.Check the control board: Locate the control board of the electric water heater. Carefully inspect the board for damage or burn-out of capacitors, resistors, and other components. If you find damaged components, you can try replacing them.