What is the working principle of a gas water heater? Common reasons why the heater cannot be turned on?

When we turn on the faucet at home to get hot water, there may be many reasons why the water heater cannot be turned on. For this reason, in this article, we explain the advantages of watertight heaters compared to other types of heaters, and what to do if they fail or cannot be turned on.

I. What is the working principle of a gas water heater?

Whether using natural gas, butane gas or propane gas, gas heaters have a similar hot water process. These devices do not accumulate water, but heat it according to the specific needs of each household (user). This is the main reason why we talk about its instantaneity.

燃气快速热水器为什么不加热

On the other hand, heaters need to be connected to an exhaust device because their basic function is to burn gas and create a flame in the burner, heating the water circulating in it when the hot water faucet is turned on or on. Power button. In this sense, cold water passes through the boiler and circulates along pipes called coils that pass through burners, heat water and reach the faucet.

In addition, we can distinguish between different types of heaters based on the ignition or evacuation system. For example, some heaters can be turned on manually by pressing a button or indicator light, or heaters with forced ventilation systems that are connected to electricity and incorporate fans to vent air.

II. Common reasons why the heater cannot be turned on?

燃气快速热水器为什么不加热

1. battery depleted

When an automatic heater fails, one of the most common and simplest reasons is that the battery runs out. In this case, we will have to replace them. In some models, when the battery is low, the spark gap works, but it is not enough to start the heater and no hot water is produced.

For those working through hydropower, the heater will not turn on if the system does not send current to the control module.

2. Gas supply failure

This type of failure is a common problem and can be caused by a variety of reasons. On the one hand, the fuel tank may be empty, may be closed, or even the regulator may fail; on the other hand, in very cold areas that may even suffer from frost, butane gas may experience complications. Therefore, another option is propane, which can withstand temperatures as low as 4°C.

燃气快速热水器为什么不加热

3. Diaphragm hardened or damaged

If the membrane that responds to the passage of water and acts on the microswitch to turn on the heater hardens, it must be replaced.

4. Control module locking

Another of the simplest reasons why the gas heater cannot turn on when you turn on the faucet may be that its electronic module is blocked or malfunctioning.

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