Electric water heater repair precautions

Many people buy electric water heaters and find that if it is damaged, but it is not a big problem, it is often the maintenance of electric water heaters. What are the precautions for electric water heater maintenance? When repairing electric water heaters, To be able to clearly understand the main points of installation, what are the main points of installation of electric water heaters?

First, electric water heater repair matters needing attention

Fault 1: electric water heater does not produce water

Reasons and relative solutions should be as follows: tap water to stop water, check the waterway; the inlet valve is not open, check the water valve; the inlet and outlet pipes are congested, the liner can be used after clearing the scale; the water pressure is too low, the pressure is higher than 0. MPa can be used normally; mixing valve spool card, conditioning failure, need to change the mixing valve; safety valve card, open the safety valve pressure relief handle without water proof that it has to be changed; the water is not water or the water is not overflowing After overflowing with water, the shower stall is in the off position, and the shower switch is turned on.

Fault 2: The water temperature of the electric water heater exceeds the heat maintainer

Reasons for analysis and solution: the water temperature exceeds the set size of the thermal maintainer; the quality of the over-temperature maintainer. Failure failure, check the heating pipe and the temperature controller without problems, then change the over-temperature maintenance device; the water heater thermostat is broken, directly heated to the over-temperature maintenance device trip, need to change the thermostat; the heating pipe direction installation is opposite, so that the water temperature is too High, it is necessary to install the original heating pipe from the new one and ensure that the tortuous part is downward; the safety valve has no anti-backflow function, and the safety valve needs to be changed. The heating tube and the temperature detecting tube are close together, and the heating rise speed is fast to trigger the over-temperature maintenance device, and the distance between the two tubes is opened to five (1) 0.

Fault 3: The electric water heater does not light up

Reason analysis and solution:

If the power is not connected, the power supply can be connected; in the heat preservation condition, the water is discharged for about five minutes, so that the lamp is turned into a heating condition, that is, normal; the lamp is broken, and the normal hot water use proves that the need to be changed.

The over-temperature maintainer is disconnected and the reset lever has popped up, indicating a problem with the internal components. The over-temperature maintenance device can only be reset after the inspection is qualified.

The water heater heating tube is broken, the multimeter is used to measure the resistance to infinity (normally a few 10 ohms), which proves that it has to be changed badly; the thermostat is broken, and the multimeter is used to measure the resistance to be infinite (normally 0 ohm) or rotate without switch sound. Prove that it has been badly changed; the controller is broken, there is no output from the power input to the heating tube, and the controller needs to be changed; if the internal terminal is burned out, the connection line needs to be changed.

Second, the main points of electric water heater installation

1. The specific step is to determine the installation position, and then mark it with a pen, so that we will not install the deviation from our direction, use the impact drill to punch holes and place the expansion bolts, or use thin wire The water heater is tied to the fixture as long as it is strong.

2, the correct method has to be combined with our careful observation of the water and electricity links to detect, so that the installation is good, you can be safe to use. There will be no danger. Look at the seepage water, do not see, there is no leakage, if it is normal, then you can power it up.

3, the grounding wire is also known as the electrical device protection is also an anti-electric wall to ensure the safety of the shower. Only if it is solid, we can use it more securely. There is no ground connection in the house, and the depth is less than 1.5 meters. Put a nail into the hole and pour some water into it.

The electric water heater maintenance precautions are as above, but the electric water heater is an electrical appliance that has an impact on indoor home safety and personal safety. It is best to give it to a professional for repair. What are the main points of installation of electric water heaters? Generally, when purchasing electric water heaters, it is necessary to ask whether it is installed with the service. It is best to purchase products that can be installed with the installation service.