Error E70 in Zanussi washing machine

Error E70 in Zanussi washing machine Most often, error codes in modern washing machines indicate a single problem that has arisen, but sometimes it is not easy to understand the instructions on the display. For example, error E70 in a Zanussi washing machine indicates that the household appliance has detected incorrect data from the temperature sensor. This may be connected either with the temperature sensor itself, or with the water heating element, or with its circuit. Let’s figure out how to accurately detect a malfunction in such a situation and restore the work of the “home assistant”.

Let's pay attention to the heating element

You should start with what most often fails when the E70 fault code occurs - this will save time. Therefore, you first need to examine the water heater, located at the bottom of the appliance just below the tank.

To gain free access to it, you need to use an ordinary Phillips screwdriver to remove all the fasteners from the rear panel of the case, and then move the panel to the side. Move the unit away from the wall or remove it from the kitchen unit to make all further manipulations easier.

As a precaution, be sure to disconnect the electrical appliance from all communications before starting any repair work.

Once you have access to the water heating element, thermistor and wiring, do not rush to dismantle the unit. First, take a photo of how everything is connected correctly to help guide you during reassembly. What to do after?

Release the wiring.
Set an ordinary multimeter to resistance measurement mode, set it to 200 Ohms and attach the tester probes to the terminals.
If the heating element is in order, then the value on the display will be in the range of 26-28 Ohms. If the device shows “1”, then an internal break in the device has occurred, and if “0” - a short circuit. In any of these two cases, you will have to buy a new heating element, since repair is simply impossible.
Next you need to check for a breakdown on the housing. Set the tester to buzzer mode and set up a contact. If you hear a characteristic squeak after you attach the multimeter probe to the terminal, then in this situation you will have to replace the part.

If you are convinced that the heating element needs to be changed, then you need to proceed to dismantling. In rare cases, this is difficult to do due to the fact that the gasket protecting the heater seriously increases in volume and makes it difficult to remove the element. In such a situation, you must strictly follow our instructions.

Treat the rubber gasket with regular WD-40 or other technical lubricant.
Wait approximately 15 minutes.
Remove the thermistor.
Unscrew the bolt securing the water heating element.
Smoothly swing the heating element and remove it from the SM body.

You should buy a new heater exactly the same as the one you had before. To do this, you can use the serial number of the Zanussi washing machine, which is indicated on the body, or you can simply take the faulty part with you to the store. Be sure to clean the seat of the heating element from various contaminants before installing a new one. You can also clean the tank, which will be easily accessible where the water heater is usually located.

Let's test the temperature sensor

Next, you can move on to the temperature sensor installed between the contacts in the heating element body. Pulling it out is very simple - you need to grab the plastic contact with your fingers and carefully pull the part out.Then you can check the element with the same multimeter.

Set the tester to resistance test mode.
Connect the probes to the contacts of the temperature sensor.
Immerse the sensor itself in warm or hot water.

Do not wet the contacts of the temperature sensor under any circumstances.

Make sure that the device has transmitted the current values to the display.

The simplest thing left is to compare the result with normal values. For example, if you immerse the temperature sensor in water heated to 20 degrees Celsius, the thermostat will show approximately 6000 Ohms. Accordingly, the more the water cools, the lower the number will be and vice versa. But if the obtained values do not correspond to reality and do not change, then the temperature sensor has failed. It cannot be repaired, so you will have to buy a new part.

You can buy it at almost any hardware store or on the Internet. To avoid making the wrong choice, take the old faulty part with you, or carefully check the serial number when ordering.

Recommendations from professionals

Finally, we will list a number of tips from experts that will help you take care of your “home assistant” with your own hands, always respond to the slightest changes in a timely manner and prevent the appearance of the E70 fault code. The heating element is one of the most important components in the system, so it must be carefully monitored. Inspect it from time to time - if you find black marks on the body, similar to small spots, then most likely this is a breakdown in the body.

The water heating element is also very important because it can cause a breakdown on the washing machine body. In this case, there is a risk of electric shock when touching a metal part of the washing machine.

Carefully study the heating element - this will allow you to understand the sealing process. When installing the element into its seat in the tank, you tighten the nut onto the thread, and the rubber part of the fastener expands. Thanks to this, the heating element is hermetically fixed in the tank, preventing water from penetrating inside the body of the household appliance. where to find heating element

This is why before dismantling the heater it is important to remove the nut and press the threaded rod so that it falls inward. Only after this can you remove the heating element, after prying it off with a small screwdriver. This must be done very carefully, as there is a high risk of accidentally damaging the fragile SM tank.

Be sure to ensure that when reassembling, the water heating element clearly fits into its seat, located at the bottom of the tank. If the heating element is even slightly higher than its standard place, it will touch the drum, which you will only be able to detect during the spin cycle.