Repair of water heaters ariston himself

23-03-2018

Plumbing

Water heaters Ariston gained popularity due to its simplicity and reliability of the design. They fulfill our need for clean water, in addition to heating, improving, to some extent, the consumer characteristics of the water used.

Storage and instantaneous water heaters are classified according to the volume of the boiler tank. Models with a capacity of 80 and 100 liters are good for filling baths with water and meeting the needs of a large family for hot water. Ariston - water heaters with a tank volume of 50 liters have an optimal ratio of electricity consumption / volume of heated water and are a budget option. They allow for 10-15 minutes to ensure the work of the shower. Kitchen variants of boilers are equipped with “mini-tanks” for 15–30 liters and are mainly used for washing dishes.

The series of water heaters of this brand is constantly being improved, but even modern protection systems do not guarantee the absence of breakdowns. The reasons are the low quality of water used and pressure drops, surges in the network, failure of electrical components and devices of the structure itself, lack of maintenance and improper operation of the unit. And in the event of a malfunction, it is worth figuring out how to repair Ariston water heaters with your own hands.

Fault analysis and design features

The models of water heaters and boilers “Ariston” are certified and correspond to the degree of protection against dust and moisture on an international scale of IP not lower than IP24. This means that failures that disrupt aggregates due to external mechanical effects or unfavorable environments are rare. The constructions are protected from accidental or deliberate exposure to objects with a size of 1.2 cm or more. Increased moisture protection allows the device to remain operable, including electrical devices that are under a voltage of 220 V, in conditions of "water flows from all directions." Disable the device can be unless targeted vandalism.

Accordingly, a distinctive feature of the Ariston model range is the use of a protective casing in accumulative type systems in combination with a heating tank. It is made of stainless steel with external thermal protection or with a coating of finely dispersed and titanium enamel, which significantly increases the service life. 1–2 heating elements of primary and accelerated heating with characteristic elongated legs of contacts are used. The type of fixing thermoelement of these models is removable flange, through an airtight sealing gasket. When dismantling, it should be noted that in addition to the heating element, there is a magnesium anode and a thermal sensor on the inside of the flange. Water heaters "Ariston", as a rule, have:

Silver Ag + coating, environmental protection system against bacteria for water disinfection.
Increased magnesium anode for water purification and protection of the tank and heating elements against corrosion.
Nanomix water distribution system and integrated recirculation heat pump.
Electronic or bimetal thermostat with temperature control up to 80? C, thermal insulation of the external walls of the tank with polyurethane foam.
ABS electrical safety and safety system - RCD.

Mechanical damage and their removal

For complete cleaning you need to remove the heater and drain the water through the mounting hole

If the repair of gas appliances requires a qualified intervention of a specialist, then the repair of an electrical column or a boiler can in most cases be done by any home foreman. However, it should be noted that the warranty period for products ranges from 1 year to several years, and for tanks it is 3–7 years. Ariston has one of the most extensive, including authorized, warranty repair networks - more than 400 service centers repair in all Russian regions and neighboring countries. And it is hardly worth taking up the repair yourself if the device has not worked out the warranty period. The paid price for the purchase includes the cost of repairs, which are made by the SC specialists who leave the house.

Most often, mechanical faults manifest themselves in the form of tank leaks: water is dripping or dripping. Models are subjected to pre-sale testing and the walls of the tank with a thickness of 0.6–1.0 mm withstand a pressure of 16 bar. However, the tank is corroded, especially in the areas of welds, and over time can leak through the metal walls and the outer polyurethane coating. Another reason could be the expansion of the tank due to a malfunction of the backflow safety valve, it should trigger and start an emergency discharge of water when it is heated to 6–8 bar. Installing a reducer to reduce the pressure at the inlet of the water network or an additional expansion tank basically eliminates the excessive pressure of water and air in it. Depressurization of the internal reservoir is a fatal defect and, in terms of finance, is the most costly breakdown possible, since many tanks are not repairable and the purchase of a new tank is required. It is easier if the leakage manifested itself from the bottom cover, for example, in the place of the flange connection of the heating element. Then the sealing gasket changes to a better one. For example, from autoclave rubber or foamed rubber.

Electrical breakdown

Repair of ariston water heaters requires certain knowledge and skills in the field of electricity

Replacing electrical components for “Ariston” is a low-budget procedure and is not associated with significant financial costs.

The most vulnerable places of water heaters and boilers "Ariston" are TEN, bimetallic temperature controllers, sensors and switches. It is not recommended, as is often done by consumers, to connect the zero and the housing slots, because the differential system of protection of the device that reacts to leakage current or short circuit is turned off. Grounding into the device should be made with a separate insulating wire.

90% of all breakdowns "electricians" is the failure of the heater. If the heater heats up for a long time, makes a noise or hiss, the ABS safety system of the heater is activated, this means that the copper or metal flask of the heating element is out of order or covered with scale (or corrosion). The average term of his service is 5 years. Repair or replacement of this heating element should be done on a de-energized device, drain the water from the tank and turn it upside down. It is necessary to unscrew the fastening of the bottom cover and remove the flange.

The condition of the magnesium anode screwed into the flange must always be checked. This consumable, despite the “electric” name, is not connected to the electrical circuit, but effectively protects the tank and tube of the heating element from corrosion. The thinning of the anode by 50% serves as the basis for its replacement.

It is necessary to measure the ohmic resistance on the knife blocks of the heater with a tester. If it shows infinity - a blown nichrome wire inside the element or a short circuit on the protective copper tube, such heating elements must be replaced. In the case of its conductive integrity, it is necessary to restore the functionality of the heating element - immerse 50 g of powder / 1 liter of water for a day in a solution of citric acid.

At the same time, the heating tank should be rinsed out of the hose with water and be free of scale and mineral salts. After installing a new heater, you should measure the resistance between the output contacts and the housing, it should be at least 24 MΩ. The heating element will last longer if you install a design called “dry” heating element.

Video

This video is about repairing the boiler Ariston. It shows how to clean the water heater (heater).