This is a very unpleasant situation when you are just about to wash another mountain of dirty dishes, and your Ariston dishwasher does not turn on. Moreover, this can happen with any dishwasher, regardless of the model and brand. Why this happened specifically to your equipment, and what can be done about it, we will tell you in detail in today’s article.
Let's start the diagnosis with the simplest
Most housewives do not understand at all what to do in such a situation, so they begin to panic. But the absence of obvious “signs of life” in the PMM is not yet a reason to order complex and expensive repairs to the device. First of all, you should open the door of the washing chamber and carefully examine the control panel of the machine. If none of the lights or indicators on the panel are lit or even blinking, then the dishwasher may have no power, so you should check the simplest thing.
Electricity. The reason may be in your home or an area of the city in which the power was simply turned off, and you did not even notice it. The option with a knocked out machine gun is also possible, which is also worth inspecting.
Socket. The outlet itself may have failed, which very often happens in old private homes due to the fact that the “ancient” wiring simply cannot withstand the power of modern technology. The easiest way would be to connect any other electrical appliance to the outlet to make sure that the problem is in the outlet and not in the dishwasher.
You can additionally check the socket using a multimeter, which will accurately show the voltage, because sometimes there are cases when the socket is in perfect order, but due to poor-quality wiring, its power is simply not enough to start a “gluttonous” device.
Power cord and plug. Finally, all that remains is to check the cord, because often the fault is hidden there. If you find damage to the wire, then you should not even try to repair it - it is better to immediately replace the entire element to avoid a short circuit and fire due to a poorly repaired cord.
The last point is especially important because it is very easy to damage the wire without noticing it. Often, the copper wires of the power cord are interrupted due to the fact that dishwasher owners accidentally crush the element by carelessly installing the machine directly on it, which is definitely not worth doing.
The breakdown is hidden inside the PMM
In the first paragraph, we examined the most common causes of malfunction, but at the same time the most harmless and do not require complex repairs. Now it’s time to talk about serious hardware and software problems that are almost impossible to deal with on your own without professional education and proper experience. However, if you are so confident in your abilities that you are ready to handle it yourself without a service center specialist, then in this case we will indicate the probable breakdown of your dishwasher.
The thermal fuse has blown. This unit in the device is responsible for turning off the PMM in case of overheating. If this fuse fails, the machine simply will not start. You can check the performance of the part using the same multimeter. The faulty element must be replaced immediately.
Do not buy a new fuse until you have removed the damaged unit, which you need to take to the store as an example to purchase the exact same one.
The recirculation pump condenser has broken. Thanks to this element, water circulates in the washing chamber. Capacitor damage is usually caused by power outages, sudden power outages, and sudden power surges. For accurate diagnosis and further replacement of the part, you will have to partially disassemble the PMM, but you can understand that it is broken by other signs, which include weak water pressure from the sprinkler, as well as poor dishwashing.
The impeller of the recirculation pump is clogged. In this case, the pump will not work properly only because the impeller is jammed after food debris, bones, tea bags and other debris that should not be in the washing chamber get into it.
The power button is faulty. The key could have broken due to a long period of use or moisture, so the dishwasher simply will not turn on. To check, the button will have to be removed from the housing, tested with a multimeter and replaced if it is damaged, or if its contacts are burnt out or oxidized.
The power filter is damaged. This option is relevant if your “home assistant” is not connected directly to the network, but through a protective filter. If it has really become unusable, then you definitely need to replace it, since you shouldn’t even try to restore a broken surge protector, because after repair it will no longer protect your devices from a poor-quality electrical network, which means it will become completely useless;
The door lock is broken.If the door stops closing tightly until you hear a characteristic click, the device simply will not allow you to start working. In this situation, you need to change the lock mechanism, for which you will have to unscrew the bolts, remove the locking panel and replace it with a new one.
But the worst thing is the option with a damaged PMM control unit. The electronic module is an expensive dishwasher element that can fail due to moisture and power outages. If this is the problem, then you won’t be able to repair it yourself - you will have to call a specialist who will carry out the following manipulations:
dismantles the PMM door and retaining bolts;
remove the control unit of the machine;
will check the module thoroughly;
will restore damaged parts or immediately install a new unit.
Do-it-yourself repairs are commendable and economical, but you should resort to them only when the warranty period for the “home assistant” has expired. Otherwise, you should always use the guarantee so that the equipment is restored both efficiently and free of charge.
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