If no one turns on the faucet, why does the water heater automatically ignite?

Cause. First, the water-gas linkage device in the water heater is faulty, under normal circumstances, the water-gas linkage device should return to the original state, and the micro-motion opening in the water-gas linkage device should also be disconnected immediately, and the micro-switch.

As soon as it is disconnected, the gas valve is closed, the air supply is stopped, and the water heater stops working.

Cause. Second, the battery power is unstable, just like a home appliance suddenly calls a TV, a computer, and an electrical appliance is suddenly started when it stops working. In the same way, this problem can only occur when the current suddenly increases and the water heater is too old.

Cause. Third, the micro switch is broken, and the power cannot be turned off, resulting in automatic ignition. In addition, the solenoid valve of the water heater has a problem and is not closed normally, and the gas source is closed, which is estimated to be rust and stuck, because it must be after the water film moves, after opening a spring gas valve, the gas can enter the combustion chamber, and the automatic ignition can burn to indicate that the solenoid valve has a problem, and it will automatically extinguish after combustion.

Normally, because the water in the water heater will cool down after a while, when the temperature drops to a certain position, the water heater will automatically ignite.

It's broken, fix it quickly, it's dangerous.

It's a broken water flow micro switch, so hurry up and repair it to avoid causing a disaster.

1. It may be a micro switch.

There is a fault and the power cannot be turned off. 2. It may be caused by rust in the water valve. 3. There is a place where the hot water pipe is damaged or leaking. 4. The power is not stable enough.

Suggested workaround:

1. Under normal circumstances, the switch is normal, the water pressure of the inlet valve will be started when it reaches the left and right, and the water heater can only start normally when the switch is turned on. If there is a problem, it will automatically ignite, you must know that there is a safety device called the induction needle in the water heater, at this time the ignition is an illusion, and there is no real point to hit **, when the fire is not sensed, the gas valve will be cut off, and the fire will be extinguished after a while, and a new micro switch will be replaced.

2. The water heater is abnormal due to the rust inside the water valve, and a large amount of water rust will make the water-gas linkage valve return pressure less than that of the water valve after the water is turned off, and the water heater will be extinguished after it is turned off.

3. Check whether the toilet and the hot water pipe flush toilet are connected or have small leakage points, in this case, the leakage points and connections of the hot water pipes should be rearranged.

4. Check the electrical pressure, after the power failure, the sudden call will make the electrical appliances stop working when they suddenly rush away, the same reason, the sudden increase in current and the water heater is too old, there will be this situation, remember to turn off the power after the power failure, the old water heater can be replaced as soon as possible.

The water-gas linkage in the water heater is faulty, and the battery power may be unstable, or it may be a micro switch.

If it is broken, it will lead to the situation of automatic ignition.

1. Generally, under normal circumstances, the water-air linkage device will return to its original state, and the micro-motion opening inside should also be disconnected immediately. When the micro switch is disconnected, the gas valve will be closed, and the air supply will be stopped at this time, so the water heater will stop working.

2. When the battery power is unstable, if too many high-power appliances are used in the home, and they start to start at the same time. Then it is likely to cause the current to become larger, and at the same time cause the voltage to be unstable, especially if the water heater is old.

3. When such a situation occurs, you can also check the micro-moving switch. When there is a problem with the micro switch and the power cannot be turned off, it will cause automatic ignition. There is also a situation where the water heater has a corresponding problem with the solenoid valve and does not close properly.

The air supply was also not turned off. After the water mill movement, a spring valve gas valve is turned on to enable combustion. The automatic ignition of the water heater indicates that the solenoid valve is problematic and will automatically extinguish after combustion.

This is where the dry boil function inside the water heater comes into play, which automatically shuts down the power. In such a situation, it is best to ask a professional repair in time to prevent a bigger problem.

"The gas water heater is turned on by the water pressure flow pressure difference, and once the water flow is very small, it will not be opened. If the water pressure at home is too small, the gas water heater will not be used, and a booster needs to be installed to increase the water pressure, and the water heater can be used normally. If the original can be positive.

Check to see if the water pressure is too low? Sometimes it can be lit in the kitchen, but not in the bathroom. It means that the water pressure is not enough! Wash or change the showerhead!

Under normal circumstances, the hot and cold water faucets are separated, so there will be no situation where the water heater will be ignited when the cold water is turned on. However, many families use hybrid faucets, so sometimes the faucet is turned on in the middle position, and the hot and cold water will be turned on at this time. The solutions for boiling cold water in the water heater and also igniting are:

1. In the case of a mixed faucet installed in the home, you must pay attention to turning the faucet completely adjusted to the state of cold water, so that the cold water gas water heater will also start and ignite. 2. If the faucet is turned on correctly, there is still a fire, at this time, you need to pay attention to check the working status of the water heater to see if it is damaged. Among them, the working principle of the water heater is that the cold water flows through the metal water pipe and then enters the burner, and then runs through the water-gas linkage valve body, the flowing water at this time is under pressure, which will also cause the water-gas linkage valve to open, and there will be a situation where the micro switch is opened, and finally the electronic pulse ignition coil will burn.

If the linkage valve body is faulty, it will be ignited and started in the case of cold water, and it needs to be checked and repaired.

1. Power supply problems, whether the battery is too old. 2. Solenoid valve failure. 3. The pipe from the water heater to the kitchen is blocked.

4. The cold water pressure is too large, or there is a problem with the mixing valve. Suggested solutions: 1. Phenomenon:

Check that the plug indicator of the AC power supply is on, if it is not on, it means that there is a power supply problem. Replace the battery with a new one. 2. If only the ignition sound is heard during ignition, and there is no magnetic sound of the solenoid valve "clicking", it may be that the solenoid valve is damaged or aging.

If the solenoid valve is aging, it can be sucked at the beginning of the ignition, and if it catches fire, but then the ignition is extinguished again. Check the exclusion method to determine the specific cause. If the solenoid valve is aged, replace the solenoid valve.

If there is a problem with the gas pressure, replace the gas cylinder with a new one. If there is any stolen goods inside the gas valve, clean it up. If the ignition control circuit is damaged, the repair circuit is faulty.

3. Most of the current pipeline PPR pipes are easy to cause pipeline blockage when scalding. In addition, the rubber gasket of iron pipe or PPR pipe joint is also easy to be screwed due to quality problems, resulting in blockage of the pipe. It is advisable to check if the pipes are unobstructed.

4. Test the cold water pressure in the kitchen and bathroom to see if the gap is too large. Or replace the mixing valve, many times, the mixing valve is bought as a broken one.

The automatic ignition of the gas water heater may be due to the water flow switch or the input port of the water flow switch of the computer board. When the hot water faucet is turned off, there is no water flow pressure, and the ejector rod is reset downward under the action of the reaction spring, etc., and the gas control valve can be closed first, and then the micro switch can be disconnected downwards to cut off the pulse igniter and gas solenoid valve.

However, due to the obstruction of the downward movement of the ejector rod, the ejector rod was not reset in place, and only the gas control valve was cut off, and the micro switch was not disconnected, so the pulse igniter continued to ignite. Only because the gas control valve is closed, the return ignition does not burn.

When the water heater inlet valve is closed, the pressure under the tympanic membrane of the water-gas linkage device is zero, so the water-gas linkage device can continue to reset downward, and the ignition will automatically stop. When the water heater inlet valve is opened again, although hydrostatic pressure has been added under the tympanic membrane of the water-gas linkage device, because there is no water flow pressure, the ejector rod remains in the lower position and does not ignite.