Ariston dishwasher malfunctions: do-it-yourself repair

A dishwasher breakdown causes a flurry of emotions, but do not rush to despair. Our publication will help you troubleshoot Ariston dishwashers with your own hands. The error code on the display can point to them, and each problem has its own “symptoms”.

We will teach you to distinguish and eliminate breakdowns of the Hotpoint-Ariston dishwasher.

PMM Ariston error codes are collected and described in detail in a separate article.

The main causes of breakdowns of the Ariston dishwasher

There can be several reasons why the dishwasher does not work. As mentioned above, you need to pay attention to the “symptoms” of a breakdown. Let’s take a closer look:

• PMM Ariston does not heat water. The cause may be a broken heating element. You should check the wiring leading to the heating element, the heater itself and the thermostat. The latter helps to measure the temperature of the water, so in the event of a breakdown, it needs to be replaced.

• When the machine does not draw water, you need to check the presence of water in the water supply. Sometimes the cause is a clogged inlet hose or strainer. Have you noticed that the dishwasher does not wash dishes well? Check the nozzles on the sprinkler, they may be clogged.
• Water is constantly poured and drained in the dishwasher. Such a malfunction indicates problems with the filler valve. Its membrane does not close, so water is constantly supplied, while the indicator flashes, notifying of a breakdown. The reason may be in the level sensor, which is responsible for controlling the water in the tank.

• The machine makes noise during operation, the water does not drain. The rocker arms could be clogged, or the pump might be broken.
• The cause of the leakage of the machine could be the drain and inlet hose. Depressurization of the case or door could also serve as a water leak. Careful inspection and replacement of parts is required.

• Your dishwasher “Ariston” does not start and does not turn on? Plug another device into its socket. If it does not work, then there is a breakdown in the outlet. Next, check the onboard switch. Ring the contacts of the switch, if there is a malfunction, replace it.

If your machine is still under warranty, then you should not solve problems yourself. It is better to contact the service center.

How to repair a dishwasher

In some cases, you can repair the damage yourself. Before starting work, disconnect the Ariston machine from the network and communications. Prepare the necessary tools.

Replacing the heater

The heating element often suffers from scale when using hard water. If you hear an unpleasant smell of burning, you need to check the wiring of the heating element, which could burn out. Are you sure the Hotpoint-Ariston heater is defective? Then proceed to replace:

1. Open the door of the hatch where the dishes are loaded.
2. Remove all trays and shelves.
3. Remove the sprinkler for water by pulling it up. It is located at the bottom of the car.
4. Below is a filter that protects the pump from contamination. Unscrew the part and remove the mesh from below.
5. Unscrew the bolts that secure the pipe and heater.
6. Lay the dishwasher on its side, exposing the bottom.
7. If the machine is freestanding, remove the rear panel by unscrewing the mounting bolts. If the appliance is built-in, remove the bottom.
8. A pump is attached to the side of the heating element. You need to unscrew it clockwise. Disconnect the pump wiring and pull it out of the housing.
9. Disconnect the rubber fastener of the heater and remove the heating element.

Tip: To make a proper wiring connection, take a photo of the connectors before removing the element from the socket.

Run the machine after repair to check the operation of the new element.

Checking the water intake valve and level sensor

When water does not enter the Ariston dishwasher or, on the contrary, it is constantly flooded, check the intake valve. The part cannot be repaired, so you will need to disassemble the PMM:

• Remove the side or back panel (depending on the model) of the dishwasher.
• The valve is located immediately behind the inlet hose.
• Unscrew the valve fasteners, disconnect the wiring.

• For replacement, a part is selected for a specific model of dishwasher.

The pressure switch could also be broken. The reasons for its breakdown are natural wear, burning of contacts, blockage in the pressure tube.

How to disassemble the car and get to the sensor:

1. Open access to the bottom of the dishwasher.
2. Find the level sensor. It looks like a tube box.
3. Loosen the two fixing screws.
4. Remove the tube from the box with pliers.
5. Inspect the reservoir (box) for pressure.
6. Check the electrical part of the pressure switch by measuring the resistance at the contacts.
7. In case of breakage, install a new part in reverse order.

It is easy to make a replacement with your own hands. Be careful, follow the recommendations.

Replacing the pump

Below are instructions for replacing the drain pump (pump) of the dishwasher. In this repair, the main thing is to properly disassemble the dishwasher.

Replacement steps:

• Open the machine’s hopper door.
• Empty the hopper from shelves and baskets.
• Pull out the bottom filter as well as the metal mesh.
• Unscrew the inlet hose.
• With the machine on its back, remove the bottom cover. To do this, unscrew the screws around the perimeter.

• Disconnect the wiring connectors from the pump.
• Loosen the drain hose clamp with pliers. Disconnect it from the pump.
• Unscrew the fastening screw, remove the pump assembly.
• Install a new pump with a rubber seal. Connect wiring.

Please note that there is a circulation pump (motor) next to the drain pump. If the pump only drains the water, then the pump drives it around the car, delivering it to the sprinklers.

If PMM “Ariston” does not wash dishes, the reason may be in the washing pump. How to get to the drain pump we described above. Then do it like this:

• Remove the drain pump first.

• Disconnect pump motor wiring.
• Release the engine mount.
• Release the metal hose clamps that are attached to the circulation pump (three hoses in total).

• After pulling it out of the case, you need to remove the spring at the bottom and rearrange it to a new part.
• Turn the spring clockwise and remove.
• To install a new engine (wash pump), you need to remove the old hose clamps and install new ones.
• Attach the device in reverse order.

So you can independently cope with the repair of the Ariston brand dishwasher. Pay attention to the operation of your equipment, if you notice deviations – conduct an inspection.