Error H20 washing machine Ariston

Hotpoint Ariston washing machines are equipped with a self-diagnosis system in which most codes begin with the English letter F. Therefore, the appearance of the H20 code may seem strange. We will understand what it means and what to do in this case.

Interpretation and description of symptoms

Error h20 in the washing machine Ariston informs the user about a failure in the water filling system. If you read the number zero, like the letter O, you get the water formula. Manufacturers took this formula in order to facilitate the memorization of this error, which can occur with any program. In most cases, the washing machine freezes before the rinse.

An important feature of the H20 error is that when the individual “Drain” or “Spin” modes are started, the machine operates normally, an error does not occur.

In addition, it is worth listing the symptoms that appear before the machine stops washing:

• no water is poured into the tank at all;
• too little water comes in;
• too much water is drawn into the tank;
• water entering the tank is immediately drained (self-draining).

Reasons for the appearance

Why does the system give this error? There are several reasons for this.

1. The main reason is related to the filling valve. Most often, it becomes clogged with particles of garbage and rust that enter the machine along with water. The valve contacts or the valve itself may be defective.
   Do not forget to check whether the water supply tap is open and with what pressure the water is supplied to the water supply. In this case, you do not have to look for a malfunction in the washer.
2. When draining water, the cause is the incorrect connection of the drain hose to the sewer.
3. If there is little or a lot of water, then the cause must be sought in the malfunction of the pressure switch.
4. Least of all, error H20 causes a malfunction of the electronic module.

Please note that if code F01 appears after error H20, then a malfunction in the machine is more likely to be associated with the second error.

Filling valve

The problem with the filler valve is the main one with this error, we will describe it in more detail, and we will figure out how to fix it. This part is located directly behind the inlet hose. Therefore, turn off the water and unscrew the inlet hose, you will immediately see the filter mesh of the filler valve. Gently using a pair of pliers, pull the net onto you, rinse in water. If the mesh is rusty and very dirty, soak it in a solution of citric acid for 20 minutes, then rinse and return to its place.

If it’s not a blockage, go on to check the part itself:

• remove the top cover of the washer to provide access to the equipment node;
  
• check valve contacts using a multimeter;
• test the filler valve itself;
• in case of breakdown, disconnect the inlet valve from the electrician,
• unscrew it from the case;
• put in a new part.

Pressure switch and drain system

The water level sensor "monitors" the set of water in the washing machine, which sends a signal to the module about how much water has been collected. If the sensor is defective, then either too much or too little water can enter the tank. Checking this part yourself is easy. You need:

1. Remove the top cover from the Ariston washing machine.
2. Find a pressure switch at the top of the machine.
3. Check the pressure pipe for leaks. It could fly off or become clogged, which will definitely affect the operation of the part. In addition, the tube could break, in which case it must be replaced.
4. Next, using a multimeter, check the sensor contacts and wires going to the pressure switch.
5. If all of the above elements are intact, then most likely the sensor itself has broken, which happens not so often.
6. Take a similar part on the Ariston washer and replace the faulty one.

In the case of self-draining water, immediately begin to check the drain hose. If the drain point is below the permissible value, then water will start to flow out of the tank. This can happen if the washing machine was initially improperly connected to the drain, and also if the drain hose fell out of the latch on the back wall, which held it in an upright position. Read all about drain system and connection in the article How to make a drain for a washing machine.

The electronic board

If after checking the valve and the pressure switch, the machine still gives an error, then you should think about the control board. Mainly, the cause may be a burned-out triac or track, responsible for controlling the water inlet valve. In this case, there is a chance to repair the module. You need to stock up on a new element, a soldering iron and patience. However, in most cases, we recommend entrusting this work to the master. Just don’t think that we are discouraging you.

In the rarest cases, the Ariston washing machine may freeze due to a failure in the firmware of the electronic board. Try disconnecting the equipment from the network for about 20 minutes and starting the wash again, maybe a reboot of the “brain” will help solve the problem. Otherwise, the board must be reflashed or replaced with a new one, which will cost a pretty penny.

Thus, the error H20 can lead to breakdown of various nodes. But in most cases the problem is solved on the spot, that is, at home. You can do the repair yourself, following the instructions, but do not want to, call the master. Good luck