Why the boiler does not turn on on the example of Termex and Ariston

The water heater may not work for many reasons. This article will be described in detail. boiler malfunctionsthat lead to this. As examples, water heaters from Termex and Ariston firms will be considered.

Why the boiler does not turn on

Boiler Termex

One of the Termex models

Possible sources of problems:

1. Tripped RCD (residual current device). First, check the health of the RCD itself, this is done by pressing the "test" button on the device. In good condition, it will turn off.
2. The mounting of the heater (tubular electric heater) or the heater itself is not in order.
3. Water purification filter defective. Need to replace with a new one.
4. The temperature sensor is broken.
5. No electricity. This is the most common cause of failure. With great care, you must treat the cable passing from the shield to the mechanism.
6. The pressure measuring device is out of order. Often changing pressure wears him out. You have to buy a new one and install it in a boiler.
7. Broken outlet.

Important! If the power of electrical appliances is more than 3 kW, it is necessary to have a cable with a cross section of more than 3.5 mm². Only such a cable can withstand the load, and the device will function without interruption.

Once a year, the owner of the boiler needs to do scheduled cleaning and change worn parts. This will extend the life of the boiler.

Boiler Ariston

One of the models of the company Ariston

Water heaters of this brand are not included for similar reasons:

1. Lack of power. It is necessary to check the quality of the cable using a tester.
2. Broken outlet.
3. Damage to the RCD. To check its operation, press the RESET button on the device. If the indicator lights up, then there is power. Then you need to press the TEST button, the indicator goes off, and again RESET. The indicator lights up - the RCD works properly. If the RCD works correctly, then it has responded to another serious problem in the power grid.
4. Faulty heater. It breaks due to the thick layer of scale that appears if the magnesium anode is not changed on time. This must be done at least once every two years.

Causes of problems

Electronics is quite sensitive even to minor external influences. Faults result from the following:

1. Unstable voltage in the mains. To protect all electrical appliances, you need to install a special relay to limit the voltage.
2. Mistakes of owners who do not conduct regular preventive maintenance.
3. Improper installation of the boiler leads to early failures. Because of them, even a quality device breaks down quickly.
4. On the surface of the storage tank on the thermal elements, a deposit of scale and salt formed. This is due to the high temperature, it is considered acceptable not a degree not higher than 60. With hard water it is better to install a filter to treat the inlet water. Manufacturing flaws are very rare, even less often they appear immediately.
5. Small spoiled and consumable parts were not replaced with new ones. This caused even greater problems.

How to fix a breakdown

Termex and Ariston boilers are repaired in the same way.

The boiler in most cases does not turn on due to problems with the heater. It is fixed on 6 bolts, they need to be unscrewed and the heater must be removed. It is possible that he is slightly stuck and does not immediately succumb. As soon as it is disconnected, thoroughly clean the device. Now you can check its operation by the tester. Verification instructions are outlined in the next section. All repairs consist of replacing the old heater with a new one.

Then you need to clean and wash the boiler capacity.As soon as it dries, you can proceed with the installation of a new heater and a magnesium anode. In order for the element to last longer, it is recommended to add a water filter to the water heating system. Also, do not heat the water more than 45 degrees.

No power to the water heater. A connecting cable runs from the shield to the mechanism. The cable is damaged or not, you can find out using a tester. If it is normal, then the device will not show phase and zero. Faulty wiring must be replaced with a new one and lay it from the shield.

Pressure and / or temperature sensors are broken. You can check with a tester. In case of malfunction, replace with a new one.

Pressure sensor and temperature sensor

Water pressure too low. Each Termex device has its own operating pressure specified in the instructions. The owner needs to buy a pump and install it in the boiler. Also possible hang water heater lower than it is now located on the wall. It is possible that some contacts have faded, burned, or oxidized. You need to either tighten them or clean them. If they still do not work, they will have to be replaced completely.

Defective outlet. You can connect another device to it to check its operation. A broken outlet must be replaced with a new one. It must be selected in accordance with the capacity of the boiler. You should also make sure that the ground outlet is properly connected to the power outlet. If the connection is incorrect, the RCD may not work, because of which the boiler will break. The protective shutdown device is necessary with increased voltage in the network and burnout: it is on time turn off the water heater.

A broken RCD can also cause a malfunction.

Detailed instructions for inspection and repair of heating elements and RCDs can be found in the following sections.

How to check electrical elements and electric heating elements

TEN of a boiler of Termeks

One of the most common reasons why a boiler does not turn on is a broken thermal heater. It fails in the following cases:

• the filament inside the heater burned out;
• there was a short circuit in the glow wire, so the electric boiler received an electric shock;
• a thick layer of scale appeared on the heating element, so heat transfer is impossible, and the water heats up less with each use.

To check the heater must be removed from the water heater. Then the device needs to be descaled. Now you can conduct a full inspection for cracks, holes, blisters and other defects. If there is such damage, then the repair will cost more than buying a new heater. If there are no visual flaws, you need to ring it with the help of a tester.

Checking the heater with a multimeter

Health check is carried out in two ways:

1. It is necessary to check the nichrome thread, which creates an incandescent process. The tester is set to circuit test mode. It is necessary to check whether the nichrome thread, which provides the glowing process, is out of order. To do this at home, the tester must be set to circuit test mode. The device terminals must be connected to the contacts at the base of the heater. If the arrow is at zero, the thread is fine. If the arrow is not at zero, then the thread is torn, and the heater will have to be completely replaced.
2. It is necessary to check the closure of the spiral. It is necessary to connect only one terminal of the tester to the heater. Another contact must be applied to the tank capacity. If the device shows the target, then the spiral resists the insulation of the boiler. Consequently, the spiral touches the housing. TEN needs to be changed.

Disable triggered self-defense

An RCD may trip while the water heater is on. This device even sometimes cuts off electricity throughout the house. This is why it starts:

1. Short circuit in the boiler or wires, if a simple / differential circuit breaker is triggered. Also, a short circuit occurs as a result of network congestion if many devices are connected to the mains.
2. The RCD must be suitable for the rated current and leakage current.If this condition is not met, the RCD often triggers for no reason.
3. Incorrect RCD connection in the electrical panel.
4. Poor quality of the RCD device. Symptoms: TEST pull-down button, switch with physical disabilities. As a result, minimal vibrations make the RCD trip idle. In water heaters from the company Termeks often base RCDs.
5. In rare cases, an involuntary shutdown occurs after heating the water. This leads to a deformed body.

First you need to do the verification. Press the TEST button at least once a month: this will leak current. So you can find out if the RCD is triggered or not. If the protective differential circuit breaker does not respond to the test, it must be changed.

For a more thorough diagnosis, it is necessary to consider it in a disassembled state. If the contacts are disconnected during shaking, the indicator does not light up, and the device itself appears blackened, which means it was operated with excessive load. This is also indicated by molten internal parts.

Burnt elements inside the RCD

If there are no visual defects, then the owner needs to study the connections in the electrical panel. There should be no moisture inside or outside, and the degree of heating during operation should not be critical.

When buying a new differential automatic machine, you must follow certain recommendations:

1. Voltage 220 V (if the owner has a single-phase network), 380 V (if the three-phase network). They can be distinguished by the number of device connectors: 2 and 4, respectively.
2. It is necessary to calculate the rated current either for all electrical appliances that are in the apartment, or for the maximum load. Most often they buy a device with a slightly exaggerated load current (from 16 to 100 amperes). During installation in the house, you need to focus on a current of no more than 30 amperes.
3. It is important to know the leakage current at which the device trips. RCDs are produced from 6 to 500 mA. Manufacturers of quality water heaters sometimes indicate a current leakage rate. Due to old wiring, a large leak may occur, which also needs to be considered.
4. Different RCDs protect against different types of electricity. For an apartment or a small private house, choose the type of device AC (protection against leakage of alternating current) or A (protection against leakage of alternating and direct current).

After replacing the old machine with a new one, it is necessary to check its serviceability.