Ariston gas boilers - Malfunctions and repairs

Error SP3 or flame separation on the Ariston Egis Plus boiler
Error SP3 or flame separation on the Ariston Egis Plus boiler

Boiler control panel Ariston bs 24
When the boiler goes out, various indicators light up, but most often 60 70 80 + chimney icon. Ariston BS boiler

The Ariston brand offers various versions of gas heating equipment; boilers differ in design features and characteristics. But the reasons that trigger the “flame separation” error are identical for all Ariston models. The article tells you what needs to be done to eliminate it.

'Error
The burner lights up and goes out

Meaning of the malfunction

It is not difficult to determine the algorithm of actions to eliminate the error, understanding what causes it. There are several reasons for the flame to come off, but if we sum them all up, we can distinguish external and internal ones associated with problems in the Ariston boiler itself. Error 5P3 is a consequence of unstable operation of the burner or failures in the electronic circuit.

External factors causing the error: chimney (excessive or insufficient draft, deficiency of oxygen entering the boiler), supply voltage source, gas supply system.

Problematic components of the Ariston : burner, gas fittings, ionization sensor (control electrode), control board.

Where to begin

  • Press the reset button (on the front panel of the boiler). Depending on the version, Ariston is designated as R or REZET. In most cases, the flame out error disappears.

Ariston EGIS PLUS boiler control panel. Click the Reset button.
Ariston EGIS PLUS boiler control panel. Click the Reset button.

Boiler control panel Ariston bs 24 Reset button
Ariston bs 24 boiler control panel. Press the Reset button.

Ariston CARES X 24 FF boiler control panel. Click the Reset button.
Ariston CARES X 24 FF boiler control panel. Click the Reset button.

  • Check voltage. The electronics of some heating system models are phase dependent. If the boiler is connected to the electrical network directly, through a socket, you need to pull out the plug, turn it 1800 and insert it again. When connecting it to the power source with a cable, the wires (cores) L and N should be swapped.

Pull out the plug, turn 180 degrees and plug back into the outlet.
Pull out the plug, turn 180 degrees and plug back into the outlet.

  • Make sure that the power supply parameters comply with the values ​​recommended by the manufacturer. For Ariston boilers this is ~230 V: deviation from the nominal value is no more than ±10%.

The risks of errors occurring in a gas boiler (and not just flame retardation) are mitigated by connecting it to a UPS. Advice on installing a separate stabilizer for Ariston is of little use - the device functions only with a continuous power supply. If we are talking about a country property, it is better to purchase a power supply for the boiler. It contains, in addition to the voltage equalization circuit, a charger and a battery group. Even if there are breaks on the power lines or failure of the backup power source, the heating installation will not turn off, and the house will not be left without heat.

  • Check the reliability of the grounding. Ariston models often give various errors when the wire is in unreliable contact with the device circuit.
  • Carefully inspect the inside of the boiler. According to repair statistics, up to 70% of errors are caused by violations in signal lines and power circuits: wire breaks or short circuits, insulation damage (breakdowns to the housing), unreliable connections (weak or oxidized contacts). Perhaps this is the problem with the flame separation of the Ariston boiler.

Insufficient circulation, error 104. How I looked for the cause

According to the manual, I determined that 104 is “Insufficient circulation.” I reason: What could interfere with normal circulation? After all, the required flow of coolant can be hindered, for example, by a clogged filter in the heating system or slag that has accumulated in the primary heat exchanger. Or maybe the reason is the circulation pump? Has the pump really fallen off? To check it, unscrew the bleed screw on it, this will allow you to see whether the shaft rotates or not.

This must be done carefully as water may start to come out, not much, but it is better to put some kind of rag down so that it does not get on the board.

There is a slot on the shaft for a wide, flat screwdriver, I tried to turn the shaft with a screwdriver... it didn’t jam, it rotates. I try to start the boiler and see if the shaft rotates. The cauldron reproduces its terrible sounds and again goes into defense. The shaft does not rotate. At the moment of startup I tried to turn it with a screwdriver.... I thought, what if a “dead center” suddenly appeared..... no, the shaft did not rotate.

I decided to check the supply voltage of the pump. When the presence of 220 volts was detected on the chip, the output was unambiguous.... Pump to be replaced. Ehh I think, again unforeseen expenses.

However, the conclusion was hasty; when I looked for the wires going from the board to the circulation pump motor, I noticed that there were more than two of them. For what? I started looking into it and this is what I found out.

How to find the cause of the error

You need to start by testing external systems and devices: breakdowns in Ariston boilers are a rare occurrence.

Chimney

It is not difficult to check the draft: if it is excessive, flame separation is observed; if it is insufficient, a so-called breakthrough occurs, accompanied by a characteristic pop. Incomplete blockage of the tract (clogging) can be easily eliminated using available means.

If a coaxial chimney is installed, you need to inspect the outer part of the duct. Freezing in winter blocks the air supply channel to the boiler. Its lack affects the quality of the combustible mixture, the operation of the burner is disrupted, hence the Ariston flame separation error.

Coaxial chimney with protection from the external environment
Coaxial chimney with protection from the external environment

Recommendations

  • Models with an open chamber should ensure a sufficient flow of oxygen into the room. If flame separation is eliminated by completely opening doors and windows, you will have to install a forced air supply system.
  • The appearance of an error during the initial start-up of the Ariston boiler indicates miscalculations made during the design and installation of the smoke exhaust duct. Here you cannot do without consulting a professional. Possible problems: incorrectly selected path length and height of the first bend (for models with an open chamber), small pipe cross-section, unnecessary turns.

Gas main

Error 5P3 of the Ariston boiler appears when the pressure value does not correspond to the standard value. The optimal ratio of gas and air in the combustible mixture is violated, which leads to flame separation or breakthrough. There are several reasons that initiate a problem with pressure in the pipe.

  • Significant temperature fluctuations , non-compliance of the characteristics of “blue fuel” with the requirements of the boiler manufacturer Ariston.
  • Glaciation on the highway. Typical for facilities with an autonomous gas supply system. As a rule, the problem is in the gearbox, the operation of which is blocked by the formed ice. But simply warming it up is not enough - you need to additionally insulate the head of the gas tank or an outdoor cabinet with a cylinder group. Otherwise, the Ariston boiler error “flame separation” will appear regularly.

Photo of gas cylinders for a gas boiler
Gas cylinders for gas boiler

Burner

One of the reasons for flame separation is its instability, caused by the low intensity of the gas entering the chamber from the nozzles. Over time, they become clogged with particles of soot and dust. It is enough to clean the burner, and the Ariston boiler flame failure error will disappear from the display. The work is being carried out in stages.

Burner clogged with dirt and dust
Burner clogged with dirt and dust

  • Heat exchanger maintenance. It is located above the burner, and gradually microscopic fractions stick to the body of the device (in the lower part), rising along with the flame. The technique is simple: the burner is covered with a sheet, film or piece of dense fabric to prevent dirt and dust from getting on the nozzles. Next, mechanical treatment of the ribbed surface of the heat exchange device with a stiff brush (a toothbrush will do). Everything that falls down onto the laid material is disposed of.
  • Boiler burner maintenance. Its injectors also require regular cleaning. You will need a vacuum cleaner and the same toothbrush.

Ionization sensor

From it, a signal about the presence of a flame is sent to the control board, which confirms the correct functioning of the Ariston boiler; if not present, the work is blocked. In some models, the sensor and control electrode are separated, but the meaning of the flame failure error does not change.

What to do

  • Clean the electrode. All layers are carefully removed with “velvet” sandpaper: burnt dust, soot.
  • Make sure the electrode is in the correct position. The wire cannot be bent - it is fragile, only the holder bar.

Ariston boiler ionization sensor
Ariston boiler ionization sensor

If the measures taken to restore the functionality of the Ariston boiler do not give a positive result, the ionization sensor is changed.

There are other reasons for the flame-out error of an Ariston boiler, but you shouldn’t deal with them yourself - only a professional approach. And no matter what numerous advisers claim, you need to understand the difficulties that you will have to face.

Gas valve

In the instructions for individual models of Ariston boilers, there are recommendations for its adjustment: but this is for professionals. When setting up the unit, you need a special device - a differential pressure gauge. Therefore, all independent attempts are doomed to failure in advance. Perhaps the flame separation error will disappear, but side effects will arise: malfunctions in the operation of the boiler when the mode changes, increased consumption of “blue fuel” and a number of others.

Electronic board.

At home, even a professional will not undertake to test it, much less carry out repairs - you need the appropriate equipment and tools.

Noise in Ariston wall-mounted boiler

Brand and model of equipment:

Ariston Genus X 35K

Michael:

The boiler operates in AUTO mode. When you turn on hot water, for example, in the bathroom, it switches from the heating system to DHW mode, while the boiler itself makes an increasing “terrible” noise. It seems to me, I’m not an expert, cold water is being collected into the boiler. The pressure on the boiler does not change, i.e. does not fall or increase. It does not show any errors on the displays.

The only thing that happens is increasing noise and the gas supply increases to the maximum. After 5 seconds, the boiler is working normally. When the hot water consumer is turned off, the boiler switches from DHW mode to heating mode. There is also a terrible growing noise. It passes within 5 seconds. And the boiler starts working normally. The question is, what is this noise? How to get rid of it? The boiler has been running for a month. New

Answer:

Try to close the gas valve a little during this terrible noise and it will become clear whether this is due to excess gas pressure or not...

In general, this indicates that flushing of the primary heat exchanger is necessary - during the maximum flame, water boils in the primary circuit.

The heat exchanger is a component of the boiler that, when heated, transfers heat from gas to water. Hard water can contribute to the appearance of scale throughout the heating system, which significantly restricts the flow of water, creating steam and small bubbles. This malfunction usually appears after 10 - 15 minutes of continuous operation of the boiler or when switching from one mode to another.

To get rid of this “illness,” you should chemically flush the heat exchanger and heating system. Of course, nowadays there are many chemicals that will help remove scale, but citric acid, as it turns out, is no less effective than the reagents popular today, including Xanax, Sillit, Detex and others.

Another reason why a gas boiler is noisy is a lack of water in the heating system, as a result of which the boiler overheats and makes a lot of noise. Of course, before you panic, you should first check your thermostat adjustment. If the adjustment is in order and installed correctly, check the water level. If necessary, top up.

Boilers may also make noise due to low pressure in the heating system. Every heating system has a built-in pressure gauge to collect information, always monitor the pressure readings.

You can, of course, limit yourself to covering the gas tap, but in cold weather there is usually not enough hot water - what to do... You want to open the gas tap, but then the boiler will hum again, etc. ... You need to rinse and forget about the problem.

If you have any questions, write.

Conclusion:

Taking into account the cost of the Ariston boiler, it is not advisable to take excessive initiative in identifying and eliminating the flame separation error on your own. Everything that is recommended for the user to check and perform is indicated in the article. There is no result - call a representative of the service organization.

Practical advice

  • A one-time visit from a technician due to a problem with the boiler is expensive. On thematic forums you can find the following data: 5000 rubles for eliminating the flame separation error. It is more expedient to conclude an annual maintenance agreement with a service center (cost about 2500). The benefit is double – significant money savings and professional service.
  • Experts recommend mitigating the risk of electrical interference on the gas main. For this reason, the control circuit of Ariston boilers often gives failures and errors. In some cases, the program is broken, and the board has to be reflashed. This problem can be avoided by installing dielectric inserts on the pipe (in several places); with professional installation this is done immediately.
  • When connecting an Ariston boiler to a gas tank, you need to choose the right supplier of “blue fuel” and conclude an agreement with him. If the flame separation error is caused by low quality LPG, there will be someone to file a formal claim and compensate for possible damage (both moral and material). And one-time calls to fill the reservoir of representatives of little-known organizations, even those offering a low price, should not be practiced. Solving possible problems with the operation of the Ariston boiler will ultimately cost more.
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