How to eliminate error code 108 on an Ariston gas boiler?

Ariston EGIS PLUS 24 FF

What to do when error 108 appears?

Answers 2

Error 108—insufficient pressure in the heating circuit, replenishment is required

Good day, I have been using this boiler since 2013, after a couple of years errors began to pop up, including 108, the search for specialists led to short-term treatment, in the end I started searching on the Internet, received advice, watched videos, did something on my own, but at the same time I realized that the device is complex and you shouldn’t self-medicate, especially since some parts are expensive and you need to change them without knowing that they are not the problem!! As a result, I started looking again, found it, and for the past 3 years, almost before the start of the heating season, I have been carrying out maintenance with the help of a specialist. The last call was literally 3 weeks ago, I’ll describe the problem: hot water stopped flowing normally, for about 30 seconds and cold water comes out, turn off the water, wait 30 seconds. you turn it on again and for 30 seconds there is hot water again, + the batteries began to heat up less, I called this technician, he asked me to tell him what I saw on the screen, and concluded that there was only one device, costing 3500, agreed to replace it, came and untwisted it in front of me and reported that it was working properly. I started looking for another problem, checked all the filters (which you can check yourself, find a video on cleaning them, listened to the ignition, how it reacted, looked at the tee on the top, it was transparent, I called it a snake gorynych, I assumed it was the board, but it worked it’s normal, I checked the pressure in the pump and pumped air into it, and there was cloudy water from the glass expansion tank), but all these procedures didn’t help, hot water flowed for 30 seconds. I assumed that the problem was in the pump that pumps water, unscrewed the plug and inserted a screwdriver in there, and just then he said that the problem seemed to be in the pump, and this was bad, since the screwdriver should have jumped out, which means replacing the pump, which is 10,000. It's a sad fact, but I agreed to replace him. When he arrived the next day, he decided to check the air conditioner, which is next to the pump, and how the problem turned out to be in IT, instead of 2 some values, it gave out 0.7, although the output was also in the pump (rewind from his words). Having replaced the condenser, the hot water flowed steadily, in addition, he changed the part of the pump where the rewind is, but he decided to check the radiator (a flat container with 4 holes), but since he did not take the pump with him, he cleaned the deposits with a simple method (citric acid in powder form 3 bags are poured into a pan of water, where the water should hide the radiator and on the fire, when the water began to boil, he began to rotate this part, causing water to flow out from one edge of the holes and then from the other, this procedure lasted 30 minutes, there was scale there) Having installed the radiator back, I ran the boiler in various modes, including in the absence of gas, and checked how the batteries were configured. In general, the master turned out to be meticulous, patient, responsible, and did not strive to simply change parts and just rip off money from me. Hot water is now constantly available. Of the work that I can do on my own, the master advised me to clean the filter, check the pressure in the expansion tank (there should be air there), and clean the radiator from scale, although the larger radiator also needs to be cleaned. For replacing the condenser (which is not so easy to buy on your own, since it is sold assembled), replacing the part of the pump where the winding is and the 5 hours of work spent, he charged 2500, + 500 rubles for an earlier previous call, where he suggested that there was a problem when I told him on the phone what was on the screen. Moreover, earlier, when the first errors began in 2015, it turned out that there was not enough water pressure, the pump was installed inside the house (private house, 97 sq.m.), but the pumps often burned (relay, or incorrect assembly), while making repairs in the house, and Having listened to enough advice again, I decided to move the pump to the yard, and it turned out that at normal pressure, I can’t say for sure now, but it seems that in a minute a bucket of 12 liters of water should be filled with 1 tap open, if this does not happen, the boiler has to work with effort, I took one the pump was made of stainless steel, but a week later the connections began to leak, they replaced it under warranty and advised to install a relay (an automatic system that, when the water is turned off, keeps the pump running for a while) and an expansion tank. However, a week later the pump began to leak again at the junction of the stainless steel and the pump. They returned the money for the pump and, after consulting with another seller, I took it with a cast-iron tank, I never returned to this problem. If you have any questions, I can answer by phone at 8988-722-88-28, including sending some photographs, in addition, I can give the technician’s number if you want to directly inquire with him over the phone, in case he can at least guess the problem, or recommend a technician, since once every two years he goes to improve his qualifications in order to service boilers under warranty and may have crossed paths with someone from your city (but these are my assumptions, not a fact, as you yourself understand, the master himself is from the Kabardino-Balkarian Republic). If you have any questions, write or call, I’ll try to tell you what I encountered myself, although I described everything above, perhaps chaotically, but I’m not a writer.

Ariston boiler errors, malfunctions and do-it-yourself repairs - Cold +

Dear visitors!!! If you suddenly decide to repair a gas boiler with your own hands, without having the proper qualifications, then you must understand that you are going to interfere with the design of gas equipment.

The information in this blog is provided for informational purposes only, what I encountered and how I fixed it in my case.

You must understand that you perform all work at your own peril and risk, and therefore, before you undertake it, think about whether it would be better to turn to specialists.

The boiler does not light up, the display shows an error - 607

The first malfunction that happened to my boiler and marked the beginning of studying this unit was the following: the boiler does not light up, the error on the display is 607.

And it’s winter outside, it’s brrrrr cold. Let me remind you that we are talking about the Ariston Clas 24 FF boiler.

So, having a specialty in radio engineering, perseverance and a little time to avoid freezing, I perform an autopsy and begin to search.

What did I manage to find out and how to solve this, as it later turned out, a typical problem for boilers?

What we immediately pay attention to

If the boiler behaves this way, it displays error 607 - pay attention to this detail!

The combustion product exhaust fan in the boiler is constantly running. Even if you turn off the boiler with the button on the control panel, it will still spin.

The fan will stop only when you completely turn off the power to the boiler, for example by unplugging it from the socket. As soon as you connect it to the network again, the fan immediately starts spinning.

This sign is a one hundred percent guarantee of the malfunction described below.

Reason: fan control relay stuck

Treatment - replacement of the relay!

In general, as it later became clear, many boiler malfunctions are related specifically to the relay.

And since all this relates to malfunctions of the electronic control unit of the ECU, service technicians sometimes recommend replacing the entire ECU, and this is very decent money.

Repairing the electronic control unit - do it yourself

In this topic, I don’t just want to point out the reason - the relay is stuck. You will learn why the boiler reacts this way to a malfunction, which relay on the board is responsible for the fan, how to replace it and where to get it.

In subsequent articles from this section, I talk about other faults related to the ECU and more.

First, we look at the block board and get acquainted with the location of the Ariston Clas 24 FF boiler relay

RL01 - Fan control relay.

RL02 - Three-way valve control.

RL03- Pump speed control.

RL04 - Pump control (Supplies power supply to the pump)

RL05 RL06 - Supply power to the ignition unit and gas valve.

Relay serial numbers are indicated as they are indicated on the board.

The malfunction we are talking about now is caused by a malfunction of relay RL01. Relay type JZC-43F (coil power supply - 24 volts)

It is this relay that is responsible for controlling the fan.

Since I was running out of time for repairs, and did not have the required relay, I installed a relay with a lower coil supply voltage, using a stabilizer chip - this design works reliably.

I removed the detailed description of this alteration from the article, but if anyone needs it, write, ask, I will explain.

Relay for Ariston boiler

Somewhat later, an analogue of the required relays was found on AliExpress.

This is the G5NB-1A-E relay. It is also 24 Volt. The relays are manufactured, work and look great - original.

I already had to repair the boiler for myself and my friends using the “Omron” relays that I received: They become like family, they work reliably!

By the way, sellers mainly offer these relays in batches of 10 or 50 pieces. That's how I ordered the batch. So now I have some reserve.

Later I found a seller from whom I can order them individually, at a good price, good reviews, here is a link to this seller

By the way, there is an opportunity to use Cashback.

PS I would like to add about cashback, for several small purchases I received $2.32. So it really works. Register and get a refund on every purchase. About what cashback is here.

About company

Hotpoint-Ariston is a world-famous brand owned by the Indesit Company. The company itself was founded in 1975 and at first dealt exclusively with mechanical engineering issues. However, in subsequent years, Indesit Company entered the home appliance market. Products under the Hotpoint and Ariston brands quickly gained popularity in many civilized countries. In 2007, these two brands were merged.

One of the most popular Hotpoint-Ariston products in Russia are boilers, mainly gas.

Troubleshooting procedure

Heating system

With a rapid drop in pressure, a leak can be easily detected by puddles and wet spots. But if it is insignificant (the Ariston 108 boiler error appears only a few days, or even weeks after replenishment), it is extremely difficult to identify it during the season. Droplets of moisture flowing through a microcrack from heated batteries and pipes quickly evaporate. Yellowness at the site of the defect will appear only when the water quality is low, but even such an influx cannot always be detected visually. If you suspect a circuit leak and error 108 appears, it is recommended to pay special attention to its problem areas:

Recommendation

A minor leak in the heating system is easier to detect when the boiler is turned off . After cooling the batteries and pipes, the pressure in the circuit is brought to the limit value of 2.5 bar. Evaporation of liquid from cold surfaces is excluded, which means that drops of water will flow onto the floor. By carefully inspecting all the rooms along the highway, it is easy to determine the cause of error 108 Ariston.

Expansion tank

Knowing its structure, it is easy to understand the location of a likely leak in this device. A two-chamber sealed metal (or plastic) tank, the internal partition of which (membrane) separates the coolant from the pumped air (or inert gas).

What to pay attention to

Ariston boiler

Peculiarities

The demand for heating equipment of this brand in our country is due to the high quality of the products. A Russian resident always chose a more reliable product, although somewhat more expensive. In addition, boilers from Ariston have a very affordable price. With proper use, they can last about 20 years or more, which makes such a purchase very profitable.

Another advantage that has affected the popularity of Ariston equipment is a wide range of models. You can find a boiler based on your preferences and requirements.

As a rule, all heating boilers are divided into four types:

• gas;
• electrical;
• liquid fuel;
• solid fuel.

In this article we are talking about gas boilers. So let's take a closer look at their subspecies.

First of all, gas heaters are divided by the number of circuits.

• Single-circuit boilers. Simple, therefore more reliable and cheaper technology. It is aimed exclusively at heating rooms, without the ability to heat water. Consists of one heat exchanger, circulation pumps and expansion tanks.
• Double-circuit boilers. Suitable for those who want to have hot water in their home, but do not want to purchase additional equipment. Inside, such boilers have two heat exchangers. Moreover, their sizes practically do not differ from the sizes of single-circuit boilers. The water in the hot water circuit is heated by water from the heating circuit circulating through the heat exchanger. This technique is more complex and therefore less reliable.

Double-circuit boilers can be bithermic. Their reliability is even lower. They differ in that the second heat exchanger is located inside the first.

All gas boilers require air flow.

Depending on how it is provided, heaters are divided according to the type of combustion chamber.

• In boilers with an open chamber, oxygen enters from the room where they are located. Such equipment has low productivity, but is demanding on the organization of conditions: the room must be equipped with good ventilation and a chimney through which combustion products will be removed. In this case, it is necessary to strictly observe fire safety rules. The advantages of such boilers include reliability and low noise level during operation.
• Boilers with a closed combustion chamber are less reliable, but more efficient. They are also not so demanding on the arrangement of the room and are practically not harmful to the environment. Their operation is based on a special burner and fan. With the help of the latter, air is taken in and combustion products are removed. However, keep in mind that the fan makes a lot of noise when operating.

Heaters can also be divided according to the type of their placement.

• Wall-mounted. Due to their compact size, they are most often purchased for placement in apartments. They are light in weight and easy to install. They usually have a closed combustion chamber and are easy to handle, which ensures additional demand. Wall-mounted boilers are not very powerful, but they are enough to heat a residential apartment.
• Floor-standing. They have increased power. But in size and weight they are noticeably superior to their wall-mounted counterparts. The price is also slightly higher. Such boilers are usually used for heating rooms and buildings with a large area.

Whatever level of reliability the boiler you choose has, it is unlikely that you will be able to avoid errors in operation. Fortunately, most modern units are equipped with control sensors and a self-diagnosis system.

The first ones will stop the boiler in order to prevent more serious breakdowns. In addition, the sensors will block all functions of the unit. You will have to fix the problem to remove the blockage. The second will notify you of a problem that has arisen by highlighting an error code on the display.

They are divided into two types:

• problems that the user can fix with his own hands;
• breakdowns, for which you should contact specialists to correct them.

You can find all code values ​​on the Internet or in the instructions for your specific model. Next, we will talk about the most common errors that occur in the operation of Ariston boilers.

Gas boiler for heating Ariston errors - Engineering systems

• 1 Error codes for Ariston gas boilers: meaning, malfunctions, methods of elimination
• 2 Ariston boiler, error codes with explanations and repair examples
• 3 Ariston boiler errors, malfunctions and do-it-yourself repairs
• 4 Probable errors, their codes and malfunctions of Ariston boilers
• 5 Error 108 Ariston boiler Leave

Ariston gas boilers are the most in demand on the market, thanks to their time-tested reputation. They are distinguished by their compact size, convenient connection and maintenance system, reliable operation, and a variety of models. The company produces single-circuit and double-circuit units, wall-mounted and floor-mounted, with an open (chimney required) and closed combustion chamber (removal of combustion products through a coaxial pipe).

Ariston devices are equipped with an improved heat exchanger design, which allows reducing gas consumption, automatic protection, which increases the service life, and precise settings. If the water or gas supply is interrupted, an automatic blocking occurs, which eliminates the failure of the device.

The most common error codes and troubleshooting methods

The most popular among Ariston boilers are wall-mounted 24 kW models. During the operation of the Ariston gas boiler, failures and malfunctions may occur, like with any other equipment. The list of error codes is given in the instructions in the form of a table.

Some of them are a malfunction of the automation (cause a protective shutdown of the device) and can be eliminated by clicking on “Reset”, and some signal malfunctions and interference in the operation of the boiler and require intervention (block the operation of the system).

All codes are divided into six groups according to the number of boiler components. The first value indicates the node in which the failure occurred, the rest indicate the error code. But it should be noted that if the protective error is repeated frequently, this indicates a malfunction.

Causes of breakdowns

Here we will talk mainly about the error codes that appear on the displays. But not all boiler models are equipped with them. Some units have light indications instead of small screens. If a problem occurs, the colored lights on the panel turn on and start flashing. Please refer to the instructions to understand their specific meaning.

Let's look at the most common error codes and how to resolve them.

• 501 is one of the most frequently encountered codes. It means that there is no ignition in the boiler. In this case, first of all, check whether the gas supply valve is open. Pay attention to the ionization sensor. If its contacts are oxidized, they need to be cleaned. The distance between the sensor and the comb should be 8 millimeters. It would also be a good idea to tighten the connections between the electrode and the control module.
• 108 - occurs due to lack of pressure in the circuit. There is probably a leak in the system. It can be found in the heat exchanger, pipes, expansion tank (don't forget to check the membrane in it), connections, radiators, or even in several places at once. Almost all of them can be sealed using soldering, but it is better to entrust this task to a professional. If there is too much damage to one part, it is better to replace it entirely.

E3 or 3 red LED flashes - no flame when igniting.

The column starts, the main burner lights up and goes out after 5 seconds of gas burning. The automatic ignition clicks when the gas is burning.

Reason #1. The flame ionization electrode is faulty. The flame ionization electrode checks the current ionization. If no flame is detected within 7 seconds, the column will restart again.

Reason #2.
The electrode gap has increased or decreased. Adjust the ignition electrode gap. The wires are checked for the integrity of the insulator.

Remedies

By following the instructions described above, you can troubleshoot problems yourself. But if you are not confident in your own abilities, you should not start such repairs.

Even electric boilers can be damaged due to ignorance, damaging the electronics. And damage to gas boilers is completely life-threatening: there is a risk of causing a leak. In severe cases, it is better to contact a specialist in advance who can fix such breakdowns.

Of course, for simple errors it is not necessary to call someone. For example, you can raise the pressure or deflate the air yourself.

Without the risk of causing serious damage, you can clean a heat exchanger that is clogged due to overheating. But be extremely careful.

The boost fan can also be repaired independently. If it rotates slowly but noisily, you need to check the bearings. Lubricate them with machine oil or replace them with new ones. But if this does not solve the problem, pay attention to the winding. However, it is better to entrust its repair to an electronics specialist.

E2 or 2 red LED flashes - DHW sensor is faulty

The gas water heater does not start when the water tap is opened, an error is displayed on the display.

Reason #1. Open circuit in the DHW sensor circuit. Restart the column after a few minutes. For diagnostics, the resistance of the sensor is measured under thermal load.

Reason #2. The flow sensor or reed switch is faulty. The mesh filter of the hydraulic unit is washed, then the flow sensor is measured with a tester.

Tips and tricks

At the end of the article, we will share with you some useful tips:

1. It is worthwhile to carry out regular maintenance and cleaning of boilers - approximately once a year. This will reduce the likelihood of breakdowns to a minimum. Parts that are broken or nearly so should be replaced as soon as possible to prevent them from causing more serious problems.
2. Don't skimp on equipment installation. Entrust this matter to knowledgeable people. Errors when installing the boiler or unsuitable placement conditions can negatively affect its operation.
3. Follow the instructions. The manufacturer knows best how to handle the equipment and describes the rules in detail in the attached documentation.
4. If serious problems occur, contact the service center - do not try to deal with them yourself. We described the consequences above. Specialists can diagnose a breakdown after an external examination. Unobvious malfunctions rarely occur. After conducting a thorough diagnosis, service center employees will be able to accurately answer how much repairs will cost you.

As was said at the beginning of the article, Hotpoint-Ariston boilers are distinguished by very high-quality assembly. Follow the recommendations, and you won't have to spend a lot of money on new equipment for several decades.

For information on how to repair a boiler if the chimney is faulty, see below.

The user can solve a number of problems with heating equipment or systems without contacting a service organization. Error 108 of the Ariston gas boiler is one of them. The article explains in detail what needs to be done to fix it.

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The 108th error is simply deciphered - the coolant pressure drop in the heating circuit is below a critical value . Understanding this, it is easy to determine the troubleshooting technique. In order to save time, the following algorithm of actions is optimal.

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E5 or 5 red LED flashes - overheating.

The column turns on, heats the water and goes out after 2 minutes. The malfunction is accompanied by a drop of soot, overheating of water and a burning smell in the room. Restarting is possible after the column structure has cooled.

Reason #1. The burner smokes, there is soot on the radiator honeycomb. The geyser is cleaned from dust and soot; the work is performed as part of annual maintenance.

Reason #2. Scale on the walls of the radiator tube. The heat exchanger is washed from scale with chemical solutions. Clean the filter elements.

First steps

The occurrence of error code 108 indicates a pressure problem in the coolant system. In the case of an Ariston boiler, the “Err 108” indication is an indicator of low water pressure in the heating circuit of the device. Accordingly, it is necessary to replace the water pressure switch and recharge the boiler using a feed tap.

Before proceeding with direct repairs, you need to check the readings of the pressure gauge located next to the display. If the pressure is 1.5 bar, then you will need to start repairs by replacing the sensor. To do this, you need to carry out a number of preparatory actions:

After this, the boiler must be removed from its mountings and disassembled.

Problems with multi-zone control (errors 7**)

Ariston brand boilers allow you to divide your house into zones, each of which will have its own heating mode. If a problem occurs with one of the sections, the system accurately determines the malfunction, so repair of a specific circuit can be carried out without interfering with the remaining normally operating parts of the heating network.

Error #70X. There is a problem with the coolant supply temperature sensor in zone X. It is necessary to check the sensor contacts or replace this part.

Error #71X. The same thing, only with a sensor on the return line.

Error #72X. Overheating has been detected in zone X. First of all, you need to check the operation of the thermostat responsible for this area. It may simply be a loose contact or a broken unit. If it works correctly, then you need to change the settings.

Error No. 750. Hydraulic circuit error. The correct type of hydraulic module connected must be set (menu parameter 720). If there is no error here, then the problem is in the settings of the circuit itself.