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How to add pressure in an Ariston boiler

ARISTON. Error 108

It is strictly recommended to connect heating boilers through a stabilizer (for boiler) or UPS, it will save on unnecessary costs of replacement of control board.

  • Low pressure in the system: if the arrow on the boiler pressure gauge is out of the green sector and turns red) it is necessary to raise the pressure to a minimum threshold of 1bar

The make-up valve is located at the bottom of the heating system, next to the connection pipe of HTW.

Opens counterclockwise until the characteristic noise of the incoming fluid, do not forget to close the valve in reverse, otherwise the pressure will creep into the red zone and release valve will be triggered (water will flow).

In the models, Ariston series GENUS provides automatic make-up of the heating circuit: activated at a pressure of 0.6 bar. The user himself sets the threshold in the settings: it is necessary to check and, if necessary, adjust the parameter.

Bleed air

  • Run the pump without igniting the boiler. Press and hold the button: mode (for Ariston series Aegis Plus 24 for 10 sec), Reset (for modifications UNO, Mathis for 6 sec). The rotation of pump wheel will initiate removal of accumulated bubbles from the coolant.
  • Check automatic valves installed in heating system. For a complete guarantee to bleed manually, as the air channel in the valve at low quality liquid is regularly clogged and requires cleaning. After these actions error 105 should disappear.

Ideally at least 1-2 radiators of each floor should have an automatic air vent.

Knowing his structure, it is easy to understand the place of the probable leak in this device: a two-chamber sealed metal (or plastic) tank, the inner partition (membrane) which separates the coolant from the pumped air (or inert gas).

  • Nipple: one of the probable causes of Ariston boiler error, in this case there are leaks in the place where the spool is attached to the body of the tank.
  • Diaphragm: it can crack (eg by emptying the system completely for an extended period of time) and the coolant will slowly leak into the adjacent chamber. Checks easily: if when the spool valve is pressed, fluid comes out with the air, the cause of the boiler fault is a defect in the diaphragm.
  • Boiler coarse strainer: installed on the inlet and prevents the heat exchanger and internal pipes from becoming littered with sediment from the reverse mowing line.
  • Clogged main heat exchanger: hard water over time narrows the passage in the main heat exchanger, to clean them it is necessary to use professional equipment (booster) or to wash the heat exchanger using special fluids on their own.
  • Boiler pump: Baxi boilers are equipped with pumping devices with “wet” rotor, t.е. the coolant constantly flows around the inside of the pump, acting as lubricant and coolant. Scale forming on structural parts causes the shaft rotation speed to drop. As a result, the pump of Baksi boiler does not reach its rated capacity, circulation decreases.

The simplest test of the pump is performed: turning its shaft by hand and by how easily the shaft is turned, the condition of the mechanical part is estimated.

Any diagnosis and repair of the boiler should be carried out by a certified professional with a valid certificate issued by Rostekhnadzor.

Gas boilers Ariston. Specialists answer

In our private house there is a wall mounted gas boiler Ariston, which does not hold pressure at all: during the cooling of hot water pressure drops to zero, although the water is regularly filled. What about the pressure?

Your boiler clearly lacks the capabilities of its own built-in expansion tank. Apparently, the volume of the heating system exceeds the life of the standard equipment of the device.

I have an Ariston Egis boiler. The bottom of the boiler (inside) drips water from a plastic tube sticking out vertically. And when I increase the pressure to normal (1.5 bar). Pressure drops after about 4-5 days of interrupted operation. Used to hold pressure for a month or more. Please advise: is it normal that the water drips? And with what is associated with a rapid drop in pressure?

It is necessary to stabilize the pressure in the heating circuit is done with the expansion tank, which is located behind the boiler or install an additional.

I have a boiler clas 24FF. The heating works fine until you start bathing in the tub. In the bathroom, the water is hot, and the radiator cools. It’s a two-circuit. I don’t understand why.

pressure, ariston, boiler

All 2-circuit boilers have a priority of hot water (DHW). When you use DHW, the boiler disconnects from the heating system and switches to the DHW heat exchanger to cook hot water. To avoid this problem it is necessary to install a boiler or a storage boiler or an indirect heater in the system.

I have a boiler Ariston EGIS PLUS 24FF worked fine for 1 year, the gas savings are half as much as with other simple floor furnaces. The other day there was a failure in the electricity, cut off the light and then gave an hour later, the boiler was turned on through the stabilizer. I noticed the problem, R101 light was blinking. Overheated, looked in the manual, what to do?

If overheating it is necessary to wait when it will cool down and reset the error, and if it does not help then in a good case to replace the sensor, or in a bad control board.

I have connected a wall mounted boiler Ariston BS II 24FF through the INELT Inteligent 500LT2. Gel battery 100A. On the mains the boiler runs fine, but when switching to battery after three failed start-ups is blocked. UPS output voltage: 210-225 volts from the mains and 234-235 volts from the battery. Sine wave is good. UPS is not overloaded. What is the reason?

Boiler can not see the flame, for normal operation, it needs zero, an uninterrupted power supply does not give zero, you need to connect together the wires in the plug zero and ground, yellow and blue wire, of course plug in such a way that after you turn on the light phase hit the phase and zero is not zero.

I have a boiler Clas 24FF, 2 years without failure, now I have a problem: at T=45gr D=1.2, when heating water in the heating circuit to 60gr D = 2.3 at this time should only turn on hot water pressure jumps over 3 and there is a pressure relief valve, in connection with what often drops the pressure in the heating circuit. Please tell me what the problem is?

You have no pressure in the expansion tank. You need to depressurize the system, check the slide valve on the expansion tank and pump (without pressure in the heating system) 1 bar.

My boiler Ariston BS 24 FF worked for 3 years without problems. Now there is a problem: Set the temperature, for example 70, the boiler does not warm the whole system, although before everything was normal, warm only the first 3 batteries, respectively the return cools, the boiler turns on for a short time (sensor on the dial shows maximum 40) and heating is off, although the return is slightly warm. Don’t know what the problem is, maybe it is necessary to deliver the additional pump? (Stabilizer stands, filter only from mechanical impurities.).

We are going to connect a 1-circuit wall mounted gas boiler Ariston 15 kW. Do I need an expansion tank?? How to check the boiler after start-up?

This model already has an expansion tank, but its volume is not always enough to work. We need to check the heating system. If it is large enough, you will need to cut an additional tank outside the boiler. Before you start commissioning, it is necessary to fill the heating system with water, including underfloor heating and radiators, as well as ensure the readiness of the chimney.

At our private house Ariston boiler works on a tank with liquid gas. Recently, it became scary to turn it on: the amount of flame goes up almost to the ceiling. What can be done??

We need to see why there is no flame control and what has failed. the reducer or flame controller, or there is another reason for this phenomenon.

Ariston appliance suddenly stopped switching on, only fan runs without stopping. Indicates error 201 and 607. Is it possible to fix it?

Error 201 means short circuit or open circuit in hot water temperature sensor. Error 607. the contacts of the pressure switch are closed before switching on the fan.

In Egis Plus 24 the heating mode was switched off and only hot water is left. It was impossible to start it now: it says “board failure”. How to fix it by yourself?

Measure potential between ground and zero, there should be nothing. If there is a voltage of at least 2-3V, the boiler will write an error and it is necessary to remove the potential. Then you should check the mains voltage: at 180-190 V the board will also fail. If all is normal, the problem is in the board itself.

Ariston Genus 24 error “flame failure”. How to fix it?

The gas pressure in the boiler is clearly too high. The gas valve should be adjusted. There can also be a problem with the air in the boiler.

Ariston 2-circuit boiler Class 24 stops providing hot water, displays error 103. What can be done by yourself?

This error code indicates insufficient circulation of the coolant. It is necessary to check the water pressure in the DHW circuit, if it is low, there may be a leak. If feeding gives nothing, or gives a short-term effect, it is necessary to call a specialist.

Leakage of a floor standing Ariston boiler 200 liters. Only lasted a year, this is the 3rd boiler for a short time out of order! What’s the reason? How to avoid it in the future?

The reason is obvious. the wrong circuit of boiler connection to the heating system. If you do not find the error in the piping, any boiler after six months to a year will also go under the replacement.

Question: ARISTON EGIS boiler. Please advise how to deal with this problem? When the boiler heats up to 70 degrees or more, it feels as if it is bubbling inside. Why? What to do?

Answer: Heat exchanger in scale. Trying to wash it with acid.

Question: Could you please tell me if you know which relay on the board of boiler Ariston EGIS 24FF relates to the fan? I want to change it, the fan keeps spinning and does not let the air relay work. And how to avoid such failures in the future? Someone advises a surge protector (which one??), someone network filter (which one?), someone uninterruptible power supply (which one?). There is nothing at the moment.

A: Neither a surge protector nor an AVR will help prevent relay breakage. It all depends on the quality of the relay. The relay is on the board. RL01 (by the tracks can be seen). Name F3AA024E (single terminal, 24V power supply).

Question: The boiler ARISTON EGIS 24FF does not regulate the water temperature after the DHW (water overheated). Switching the boiler to winter/summer mode, change of water flow (more/smaller) through the DHW does not work. In heating mode, the water temperature at the outlet of the boiler is regulated normally.

Answer: Probably not adjusted the minimum gas pressure, the temperature sensor NTC deteriorated. D.H.W., temperature regulator does not work, etc.

Question: Boiler ARISTON EGIS 24. The problem with the DHW turbine.Cleaned, flushed, but no results. It only starts when there is not a lot of water pressure and not always.

Answer: If the turbine does not rotate when you blow and cleaning it does not work, it is necessary to change it.

Question: Can you tell me what the problem could be?? Boiler dual boiler Ariston Egis 24FF: I opened the hot and cold water taps, took a shower, closed the tap after 10 minutes, and after about 15 minutes I noticed that the fan in the boiler is still running. Only a green light turns on that the boiler is on. Pressed the button of the two-pole switch, the light went out, but the fan continues to run and turned off only when disconnecting the boiler from the network.

After a minute, connected the boiler to the network. The fan started working right away. Pressed the two pole switch key. Green indicator light came on. Turned the heating regulator. The boiler started humming (the pump must have turned on), but the burner did not light up, and the orange light of the chimney malfunction began blinking. The fan has been running the whole time. Set heating regulator to zero. orange light stopped blinking.

Opened the hot water tap. Blinked twice on the 40 degree light (as always blinks when hot water is on) and the orange smoke alarm blinked again. Still no gas. The fan runs all the time. The pressure in the heating system is normal. Just under 1.

Question: No hot water when the heating is off. When the heating is on hot water goes, if you turn off the heating, hot water disappears. What can it be??

Response: DHW flow sensor does not work. Turbine fouling.

Question: Boiler ARISTON EGIS 24FF. Something clicked in the boiler and all the LEDs went out. Replace the fuse. The boiler is alive, but both in heating and hot water modes, the red indicator “burner ignition failure” lights up. After resetting the same thing. The burner is trying. You hear the discharges click for a few seconds, then the relay clicks and the “burner ignition failure” LED lights up. What can I do?

Answer: Check coils of the gas valve and voltage coming to it during the ignition of the spark.

EV1 voltage (between the contacts 3 and 4) = 220 V

EV1 Resistance (between terminal 3 and 4) = 878 Ohm

EV2 Voltage (between terminal 1 and 3) = 220 V

Resistance EV2 (between pin 1 and 3) = 6860 Ohm

Question: Water started to drip actively from the air vent and the pressure in the system started to drop. What can it be??

Answer: The air vent has to be changed and the pressure will stop dropping. As a temporary measure, the air vent can be closed.

Question: Ariston double boiler 24. Heating lights up and heats normally, but if you turn on hot water, the burner goes out. If the heating is off and you turn on the hot water. The burner does not light. What can you do?

Answer: Check the NTC sensor, which is on the hot water.

Q: The problem is this. Today I wanted to turn on the heating, the circuit ignited, began to boil, the pressure rose sharply and it stopped. It is assumed that the circulation pump has not started. What you can do? How to check?

Answer: Unscrew the pump plug and use a thin screwdriver to turn the pump shaft. If it spins easily but won’t start. Check the condenser in the pump.

Question: Could you advise me please, I have an ariston egis 24, the heating is working, but no hot water. How to tune?

Answer: Check the turbine of the DHW flow sensor.

Question: The red SEED light came on today. When you press Reset red SEED turns off the boiler turns on, the burner lights up, the spark continues to click weakly, as if half-lit, and the boiler locks. What could it be? Chimney boiler.

Answer: Boiler does not see the flame. Check the electrode.

Question: ARISTON UNO boiler. Help me figure out the malfunction. When the boiler operates in DHW mode, the coolant simultaneously circulates through the heating circuit (by radiators). As far as I understand from the manual. This is not normal. For the winter period is not critical, but for summer. Would it be enough to close the fittings on the water supply from the boiler to the heating system, if it does not lead to even worse consequences??

Answer: You can disassemble the 3-way valve and clean, check the servo. Does it switch normally? If anything, change the actuator and the inside of the 3-way valve. But you can also turn off the heating valve for the summer. There should be no consequences.

Question: Boiler Ariston Uno turbo. The driver of the three-way valve in the DHW mode does not switch to heating, I tried to put another one, checked the sensor of the DHW flow. Result. 0. Please advise what else it may be?

Answer: If the boiler is set to summer mode, but the DHW will not turn on, the driver will be in D.H.W. mode, but the gas will not light up. If you set the temperature higher in the winter mode, the actuator should switch and light the gas.

Remove the actuator. Check the switching (press with a match. Check the movement of the piston rod) when turning on. When turning off the DHW in the winter mode, if it doesn’t move but the gas comes on, check if the relay energizes the actuator. Check the stem of the 3-way valve itself, whether it moves 1 cm deep.

Question: When using the boiler Ariston Uno in heating mode, only one radiator in the apartment is heated, the boiler has reached maximum temperature and cyclically turns on. Switching off. No air in the system. What to do?

Answer: Check the filter in the return of the heating system, check valves that separate the system from the boiler, check the gaskets on the union nuts, if any, check the pipes. Especially the supply. to see if there is any flow. Check the operation of the 3-way valve. Does it heat in heating mode. DHW heat exchanger.

Question: The problem with the boiler Ariston Uno, in heating mode heats the battery only those next to the boiler. Feel like there is poor circulation, the pump sound was louder before. No air, the return filter is clean. Mode: 30 seconds burner on, 2 minutes standby.

Previously, the operation mode seemed to be different, the burner burned longer and the standby mode was longer. Set to maximum, all the radiators heat normally. The last few days, turns itself off once: all indicators are lit and not flashing, did a reset. running. Ex 2: nothing lights up, boiler is on, does not respond to reset.

Turned off the power for a few minutes. Started. Time 3: green light blinking and all, boiler just does not start, does not respond to reset, also disconnected power. Could be a coincidence, different failures. What you can do?

Answer: The breaks seem to be different. D.H.W. How does it work?? Normal? 1 and 2 times. Board malfunction. 3 times. NTC sensors do not work properly. When only the radiators closest to you get warm. Check the return and supply temperature of the boiler, as well as the temperature set.

Maybe the minimum flame on the boiler is not set, maybe the sensors, maybe limescale in the heat exchanger, maybe a 3-way valve is not switched over, maybe debris in the supply pipe.

Question: Could you advise the boiler ariston uno turbo constantly rises pressure for 8 hours comes to 4 and if not reset, there is an emergency flush and poured two buckets of water. Checked the pressure in the expansion tank was 0.5, pumped up to 1.5, the air was deflated from the system, replaced the cap on the tank on a more reliable.

Answer: The problem is all in the proportion of water in the heating system / volume of the expansion tank. The pressure in the tank is checked when there is no water in the boiler and on the manometer = 0 bar.

repressurise Ariston Cares boiler. noise warning 😉

Nitrogen or air pressure in the tank must be within 0.8 bar. If you have a heating system with a large amount of water. than 100 liters. You need an additional expansion tank.

In order for the heating system to work correctly, the pressure must be kept at 0.7-2.5 bar. But in different models of units the indicators may vary, they are specified in the technical specifications of the specific device. Significant pressure drop indicates a problem in the heating system. In modern gas boilers, the diagnostic system alerts about the problem with an error code displayed on the screen.

If the pressure gauge shows a pressure below 1 atm you need to add coolant to the system. For this purpose, in modern gas boilers there is a make-up valve. It can be manual or automatic, the latter from time to time adds liquid to the system without the owner’s participation. This tap is installed on expensive premium units. Most boilers are equipped with the usual manual element.

If after adding fluid to the system, the pressure drops again, look for the source of the problem.

Causes of reduced pressure in the gas boiler are many. It is important to quickly find and eliminate it. Consider the common causes of reduced pressure in the heating system.

pressure, ariston, boiler

Presence of air s

The presence of air accumulation is detected by noise and vibration in places of their concentration. As a result, the radiators are poorly heated, because the air does not pass the heat.

This problem forces the unit to work at a wear and tear, because of this gas consumption increases significantly.

The problem of air s can be easily solved by opening the nearest Meyevsky faucet and letting the excess oxygen out.

Leakage in the heating system

One of the most common causes of pressure drop is the leakage of coolant. Even if you refill the system with liquid, after a short time the pressure drops again. It is necessary to find the place of the leak, it is better to examine the joints first, because weaknesses occur more often on them. It is possible to take a dry napkin and pass it through the pipes. Upon detection of the problem area should disconnect the water supply and repair or replace the leaking section.

Failures in the operation of the expansion tank

The expansion tank is needed to compensate for the increase in water volume during heating. On its failure indicates the following situation: when heating the coolant pressure rises sharply, and when cooling the manometer readings fall very low. Often an increase in pressure in the system is accompanied by a discharge of water through a safety valve.

The situation can be corrected by adjusting the operation of the expansion tank. For this purpose it is drained and deflated. Then pump up the oxygen to the required level.

Please note! The pressure in the expansion tank should be 0.2 atm lower than in the heating system.

Sometimes the reason of the pressure drop is the weakening of the nipple of the expansion tank. In this case it is necessary to tighten it or replace it with another one.

Leak in the heat exchanger of the gas boiler

If there is no leak in the heating system, the heat exchanger may be leaking. The surface of the exchanger should be thoroughly examined. The leak can be evidenced by small rust spots. through these places the coolant is gradually leaking.

If the heat exchanger is damaged, it is best to replace it with a new one. Soldering the holes will only have a temporary effect.

Learn how to adjust the pressure in the expansion tank here?

The mismatch between the gas boiler and the heating system

Sometimes the capacity of gas boiler does not match the heating system capacity. For example, the circulating pump of a low capacity unit cannot pump the heat transfer fluid through a heating system that is too large at the required speed. As a result the pressure will be low. The situation can be corrected by adjusting the operation of the gas boiler or pump, installing an additional device, removing unnecessary radiators, etc.д.

Problem with the three-way valve

Three-way valve is necessary for two-circuit gas boilers. It switches the fluid flow from the heating system to the DHW. If the valve becomes clogged with limescale or rust which obstructs the movement of the liquid, this reduces the pressure in the system. The valve should be cleaned.

Trouble in the pressure gauge

It also happens that the pipe that connects the gauge to the heating system is clogged. Clean the three-way valve and the pressure will return to normal. Experts recommend including several pressure gauges in the system in order to control the pressure in different places: the supply, the return and the highest point.

For example, on the forums there is often a question on how to add pressure in the gas boiler Baxi, if there is an error e10, and the manometer shows the pressure within normal limits. Most often it indicates a clogged pressure gauge pipe.

If you can not find the cause of the drop in pressure in the gas boiler, you need to call professionals. Continuous refilling of the coolant will only give a temporary result. If the cause of the problem is not eliminated for a long time, it will lead to wear and tear of the gas boiler components and increased fuel consumption.


Coolant leakage

It can occur in the following areas:

If the pressure in the operating boiler is continuously depressurized, all fittings are carefully inspected first.

Then the entire system is examined for leaks. The front cover of the device is removed, all internal mechanisms are examined.

The tightness check must take place before the heating season starts. Worn seals, corrosion, loose fittings, etc. can also not be ruled out.п. During the usage of the heating system.

How to raise and depressurize a gas boiler

Gas boilers are used for heating and hot water in private homes by transferring heat from the combustion of gas through a system of pipes and radiators.

To provide warm water for all plumbing, heating walls and “warm floors” is enough for a two-circuit unit.

To perform its functions, the boiler must maintain operating pressure in the circuit. only under these conditions, the coolant will circulate normally and keep a comfortable temperature. If it goes down, it loses precious heat, and the unit can shut down and even break down.

How to feed an Ariston boiler with water

Question: We installed a wall mounted gas boiler Ariston clas evo 24 ff. Made a small change in the heating system. Before calling a service technician for the first start-up, you want to fill the heating system with water and check for leaks. But encountered a problem filling the system with water. How to do this? Where is the makeup valve?? Whether to turn the boiler into the mains? And why do we need a solenoid make-up valve?

Answer: The electromagnetic make-up valve is just for make-up and need. Only for this you need to plug in the boiler, but I would not advise to do this until the service arrives. Believe me, there are different situations at startup. And then, with this valve the system is not energized, but recharged. To fill the system either cut in from the cold water in the return (with a tap), which I personally do not welcome, or fill manually through the valve.

Look at the valve from below and you will see a screwdriver screw. So, if you turn it (pointing to the letter A), the water begins to flow into the system through the boiler (letter C-closed). Underneath the boiler next to the automatic makeup is a key-magnet. Put it on the pin sticking out from under the boiler and connect the CO.

Question: I connected a gas boiler Ariston Class 24 ff, ended the heating season, turned off the heating and now when you turn on the hot water boiler operates at a given temperature for about 10-30 seconds, after that fades and the screen shows the inscription H46 (46 water temperature, looked H. pump off delay in DHW mode, something I have not heard the pump work at UDC? The water from the faucet begins to turn cold, then the pot is lit and so on in a circle, lit, extinguished, lit.

When the boiler shuts down inside, I hear a bubbling sound, as if the water is boiling, from the chimney is periodically dripping, apparently, the condensate from the steam from the boiler, if you turn on the heating at this time, the bubbling stops immediately, while working in DHW mode, the heating pipe is not warm, when the boiler shuts down, if you turn on heating, the temperature in the heating circuit is about 80 degrees and drops rapidly.

Help, and then turn to no one else, no normal service in our city and at home I soon this boiler on my head will wear. And another question, the automatic vent valve in the boiler near the pump, after filling the heating system should be closed or it remains in the raised position, and I think that through it the steam goes to the chimney.

Answer: Carefully unscrew the large nut on the end of the pump and check to see if the pump rotates. Only the board must be protected so as not to pour water on it. Cover with something. This valve should always be up. I would start by cleaning the hot water flow sensor. It is very likely that the turbine in the DHW flow sensor does not rotate. If it does not help, the secondary heat exchanger is clogged. If the heat exchanger is clogged, you need to clean. Remove the heat exchanger and check the condition of the CO. And before that indirectly determine the operation of the boiler in DHW mode.

Open the boiler, turn it on in DHW mode and determine the supply and return temperature of the primary heat exchanger. There is no need to dismantle the boiler. The secondary heat exchanger is installed below, stainless steel plate heat exchanger. The contamination could be on the primary side.

This is especially common when using a boiler with a steel heating system improperly flushed or when using aluminum radiators. It is always advisable to use a filter on the return of the heating system. Remove the heat exchanger and flush it with the proper products.

Question: Installed wall mounted boiler ariston clas 24 cf. All winter worked fine, but a week ago turned off yesterday wanted to turn on the weather cooler, and he gave me a surprise error 302. I pressed Reset, but the button does not respond, I pressed ON/OFF and thought to turn it off, but it does not respond either, in general, it feels that the buttons are blocked! what to do ?

Answer: 302 is not an error, it indicates that the boiler is in the settings mode. I would try to check the display board on another boiler like this. If it is faulty, you will have to flash the memory on the control board.

Question: When I turned on my Ariston Klas boiler, I found out right away: error 201 Sensor on the hot water supply (NTCs). no contact. And there is no sensor at all, in its place is a factory plug. Discovered when cleaning the DHW flowmeter turbine there is no flow regulator. And everything is working.

Answer: The error 201 shows up because the board is an old-style, where the DHW was still a NTC sensor. The flow sensor impeller is clogged because there is no fine filter on the water inlet (or it is completely clogged).

Question: Boiler gives error 501 No flame. Checked the boiler control board like a relay controlling the igniter is intact, the optocoupler is also intact. Perhaps someone has met with this error and how to fix it?

Answer: The main causes of this error are usually potential on the gas pipe (relative to the boiler body), dirty flame control electrode, low gas pressure to the burner. You first need to check this and then check the electronics.

Question: I have started an Ariston Class 24 wall mounted boiler. Has been running for three weeks and everything seems fine, but there are a couple of things I doubt.

When the CO cold, the pressure on the manometer is 1 bar. When the boiler is turned on to maximum power and reaches the set temperature of 80 degrees, the pressure reads 2 bars. Is it normal?

When the boiler is plugged in, the indicator flashes Err / 201 several times. In the description of error codes in the manual did not find one. It is clear that the error is associated with the DHW, but maybe someone knows what exactly it is about? And also by the feel of the min. the DHW temperature setting the water from the faucet is much hotter than 36 degrees.

Answer: It is necessary to properly adjust the gas valve then DHW will work as it should.

Question: To avoid a large flow from the cocks, I put additional ball valves in front of the mixer, they are almost closed. At a large flow has not checked the temperature. And if the new models do not have a temperature sensor, then it is unclear how the board controls the temperature in the DHW? Why does error 201 appear when the boiler is plugged in??

Answer: The latest versions of boilers Agiston clas evo system 28 ff really do not have a temperature sensor (DT) DHW. The d.h.w. temperature is determined by the flow temperature in the CO. Error 201 appears at equal readings of the supply and return DT, that is at the moment of switching on and disappears in about 5-10 seconds. Fewer sensors less problems. (The firmware versions seem to be the same, the tracing and the boards detailing seem to be the same too or maybe I looked wrong.)

Question: In summer the gas boiler Ariston class 24 ff was installed, the heating circuit and DHW. Checked everything was working fine. Recently I cut in another battery / I think this is not the main point. Boiler has been out of pressure for a couple of months. without water. Today I wanted to check the connected radiator for leaks:

Water in the system about 2 bar 2. I pressed self-ventilation of the circuit 3, the boiler switched to the right mode, but the pump noise did not follow 4. The boiler is out of mode and heating the water in the circuit, the pressure began to rise, then triggered a lockout and threw error code 104 (poor circulation). 5. After restarting the situation repeated. 6. got to the pump. there is a valve (for some reason it was suspiciously hot). 7. Several times I filled and drained the water, I spilled what looks like rust. The circuit is made of plastic (soldered), radiators are steel, after flushing nothing happened. situation repeated 8. Stop torturing yourself and the boiler so as not to “mess up”.

I have a suspicion of sticking. It feels as if the pump is trying to start. but can’t turn it.

Answer: On the end of the pump unscrew the plug and carefully with a screwdriver develop a sticky shaft (on the end there is a slot). Tighten the plug. Starting the boiler.

Question: Installed wall mounted boiler Ariston Clas 24 FF. Nobody used it before. When starting in both CO and DHW modes, the burner ignites, the temperature starts to rise on the display, and then shuts down (all this for a few seconds), error code 104 insufficient circulation. There is no sticking in the pump, I twisted the shaft, the flowmeter rotates fine, in the CO circuit there is 1.5 atm.

Can there be an air lock in the CO circuit?? I blew the air out of the radiators, but I don’t know what’s wrong with the air vent. The air vent, as I understand it, is opened by lifting the red cap on the pump, but it has no effect. And the auto bleed function is somehow unclear: I hold down ESC for 5 seconds, P1- appears on the display as described in the manual, but after that nothing happens. After a couple of minutes the boiler goes back to standby mode. Trying to ignite it again and error 104. Maybe the pump doesn’t turn on at all? How to check it?

Answer: Carefully unscrew the plug in the end of the pump during operation, but water will ooze out and you will see if the rotor rotates. Check the CO filter. If the pump and CO is OK, the water pressure sensor could be lying.

The pressure gauge should read 1.0 to 1.15 bar before starting.

Looking at the diagram of a heating gas boiler, it is not difficult to guess which valve is responsible for the pressure in the heating system. Of course, the fact that your manometer shows 0.5 bar is a very low pressure for the normal operation of the boiler. What the manual says 1.0-1.15 bar is minimal. Given that I seem to have the same boiler, I want to show you a close-up view of the control panel, namely the scale of the manometer.

Note that the red stripe is located as much as number 3. And do not look that I have a low pressure. I haven’t turned on the heating yet. What do I want to say? The minimum pressure should be 1.15 bar and the maximum pressure is 3.0 bar. Therefore, I am always in favor of the golden mean. Try to keep the pressure around two. As soon as it becomes less than two, open the valve number 16 in the diagram (make-up valve). In my boiler this valve is made of blue plastic (if you look under the boiler you can see it). Especially for you, I put the phone “under the skirt” of the boiler and took a picture of how the make-up valve looks like.

Ariston gas boilers are quite popular among consumers. They attract customers with their well-known name, stylish design, versatility and democratic price. However, even in these units can break down. The self-diagnostic system identifies them and shows them as an error code on the display. Consider what malfunctions of gas boilers Ariston can detect the system.

The pressure in the boiler drops

Heating gas boilers heat by burning natural gas, from the combustion of which generates a lot of heat and transfers the heat transfer medium through a heat exchanger. The heated coolant (this can be water or antifreeze) is distributed throughout the house through a system of pipes and radiators. Two-circuit boiler for domestic needs provides heated water to all the plumbing in the house, such as shower and bath, and can also heat the floor, so to speak, warm floors. But what to do if suddenly you notice that the pressure in the boiler has dropped and still remains low. The only and correct solution is to contact us for help.

For the proper operation of the heating system, heating boilers must maintain a constant working pressure, it is necessary for the normal circulation of heating water or any other coolant through the heating system of the house. from boiler to radiators. Loss of pressure or too low pressure can affect the natural movement of the coolant, which will entail incorrect operation of the system, and as a consequence, heat loss. Low or even worse lack of pressure is a critical failure of the boiler, which requires the intervention of a skilled worker, to restore heat in your home.

Control of pressure in the heating system

The design of gas boilers engineers embed a variety of devices to monitor the operation of the device. They collect information about the state of the heating system and display it to the consumer through a variety of information windows. So the normal working pressure in the heating system of a typical private home 1,5 2 atmosphere. A higher or lower value indicates a problem with the boiler.

Please note that problems with pressure in the heating system of the house occur only in systems with forced circulation. If your home heating system with natural circulation, you may only encounter such a phenomenon as aeration. Falling pressure and air in the system to eliminate on their own is almost impossible, so you should invite an experienced technician to repair the boiler.

What to do if there is a pressure drop

Low or no water pressure in the gas boiler means that there are serious complications in the boiler and in the network. If the pressure gauge reads less than 1 atm, add water by hand. To do this, the make-up valve opens. If after that the gas boiler does not hold pressure, then you should call a master.

Another way to raise the water pressure in the gas boiler: the entire network is inspected for water leaks. It happens that during initial starts and increased pressure cracked pipe joints. This is where the leaks occur. As a result, the pressure gradually drops. It is necessary to eliminate the leakages as soon as possible.

You also need to pay attention to the expansion tank: carry out its diagnostics and check. This work is carried out by a specialist.

Pressure jumps. finding the causes and fixing the problem

During the operation of the boiler can cause both spikes and drop in pressure in the heating circuit. Why the water pressure jumps, how to eliminate this problem?

Falling and rising can occur for the following reasons:

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    If it drops slowly over a long period of time, micro-cracks in the machine’s heat exchanger are most likely to be to blame. They appear after the exchanger is flushed from lime scale, wear or poor quality metal of which it is made. Micro cracks are difficult to identify as they may not be visible externally due to high temperatures on its surface and evaporation of escaping moisture.

If soldering is impossible or does not give a positive result the heat exchanger will have to be replaced. In bi-thermal heat exchangers cracks can be caused by water hammer when pressure rises sharply after an accident on the main line. It is practically impossible to solder, due to the specific design, it must be replaced.

Balancing (make-up) valve of the heating system

Until the excess pressure is relieved by the pressure relief valve. Then, when the pressure decreases, the fluid from the heating circuit pressurizes the water from the water mains and the pressure in the heating circuit closes or replaces the tap.

Carefully inspect the walls for wet spots, if you can’t determine anything, call in the professionals. You can determine the leak by using a compressor, having previously drained the liquid from the system and closed the valves, disconnect the radiators from the boiler.

The gas inside the tank balances this pressure. If there is a gas leak from the tank, there is no equilibration. Pump up the gas can be a car pump with a manometer, preliminarily shut off the boiler, close the valves that connect the heating and water systems from the boiler and drain the water from the boiler.



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