How to remove the hot and cold water switch of an electric water heater? Why does the electric water heater always make a squeaking sound?

In recent issues, we have shared with you some common sense about electric water heaters in life. Today we want to know how to remove the hot and cold water switches of the electric water heater, why the electric water heater always makes a squeaking sound, and why the mixing valve of the electric water heater cannot release cold water. I hope it will be useful to you.

Contents of this article

1. How to remove the hot and cold water switch of the electric water heater

2. Why does the electric water heater always make a squeaking sound?

3. Why can’t the mixing valve of the electric water heater release cold water?

How to remove the hot and cold water switch of the electric water heater

1. First, you need to close the water inlet valve, drain all the water in the water heater, and lift the one-way valve handle to drain the water.

2. Next, remove the shower pipe at the outlet of the mixing valve and unscrew it counterclockwise.

3. At the bottom of the mixing valve handle, there is a screw that fixes the handle. Use a screwdriver to loosen it counterclockwise to remove the handle.

4. The mixing valve is covered with a round cover, which is fixed with a plastic nut. Unscrew the cover nut counterclockwise by hand.

5. Then unscrew the nut, and then you can take off the round cover, and then you can see the internal valve body.

6. Finally, use a screwdriver to unscrew the fixing screws, and then use a movable wrench to remove the hot water pipe and cold water pipe joints on the left and right sides and replace them.

Why does the electric water heater keep making a squeaking sound?

There is scale inside the electric water heater and it needs to be descaled. Once the scale is removed, there will be no sound.

Scale can be removed by soaking in vinegar. Since the main component of vinegar is acetic acid, it can react with scale.

Scale is commonly known as "water rust". It refers to the crystals formed by the continuous accumulation of impurities in natural water on the inner surface of the boiler, which is generally white or yellowish white. The main components are calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, etc. The thermal conductivity of scale is very poor. If the scale in the boiler is too thick, the boiler efficiency will be reduced, and in severe cases, it will cause the boiler tube to burst and cause a boiler accident.

Why can't the mixing valve of the electric water heater release cold water?

1. The water supply pipe valve is not opened: When the mixing valve handle is turned to the cold water side, no hot water comes out. The solution is to open the water supply pipe valve.

2. The cold water end of the mixing valve is clogged: When the mixing valve handle is turned to the cold water side, hot water comes out. The solution is to open the mixing valve and clean the cold water end.