Operation, possible errors and repair of Lemax Patriot boilers

The principle of operation of a gas burner

There are several different types of gas burners, but they operate on the same principle.

The burner is a hollow metal tube with several holes (nozzles). Gas is supplied into it, which burns in air forced into the combustion chamber.

As a result, a mixture of combustion products is formed (carbon monoxide, carbon dioxide, water vapor, soot - pure carbon), which is discharged outside. The gas is distributed evenly thanks to a system of nozzles, and the air is forced through natural draft (in industrial furnaces the draft is forced).

It can be represented schematically like this.

Operating principle of a gas burner (diagram)

And in a real gas boiler the burner looks like this.

Thus, if a gas boiler does not light up, this means that any of the combustion conditions are not met:

Gas is not supplied.
There is no draft (no air supply).
Combustion products are not removed (as a result, they accumulate and do not allow the flame to flare up, which is why it goes out immediately after ignition).

Why does the gas boiler not turn on, start, or ignite?

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The main causes of problems with a gas boiler

You can begin to repair equipment only after the cause of the malfunction has been accurately determined. Then you can determine whether it is possible to fix it yourself or whether you will have to call a specialist.

External causes of boiler malfunction

The reasons for the extinguishing of the boiler burner can be caused by external factors:

deterioration of the natural draft of the chimney or its overturning;
decrease in gas pressure in the main;
gas meter malfunction;
gas filter clogged;
power outage;
lack of supply air;
a draft in the house, creating a short-term excess of supply air;
heating system problems.

Very rarely, sharp gusts of wind can upset the draft in vertical external chimneys or exhaust shafts built into the thickness of the wall, which is why the gas boiler can go out.

What you can do yourself

The sequence of first actions is the same in all cases:

The boiler is disconnected from the power supply, and the gas tap is completely closed.
A visual inspection is carried out to check for possible blockages and mechanical damage.
If the combustion chamber is open, you can simply light a match or lighter and hold the flame near the holes through which air is supplied to the burner. If the draft is not clogged, the tongue will immediately deflect towards the holes, and the flame will burn evenly. If the flame deflects weakly, then there are large blockages.
You can also draw conclusions based on the operation of the boiler. If it hums quite loudly, and the color of the flame is closer to colorless, then the draft is too strong - it needs to be reduced.

Similar problems can arise at the very beginning of the boiler operation - in case of improper installation, with deviations from the diagram presented below.

If the boiler does not start at all

It may also be that the boiler does not turn on - i.e. there is no flame initially.

The reasons for this may be:

The simplest is low voltage or other problems in the electrical network. What to do: you should once again check the connection, the integrity of the electrical wiring, and the serviceability of the outlet.
The electronic control system does not work. Then you need to call a service technician, since it is almost impossible to fix such malfunctions yourself.
The burner nozzles are clogged - you can carefully clean them at home. The cause of clogging is incomplete combustion of gas and soot deposition. Normally, the flame burns blue, but a blockage can be identified by the abundance of red, orange and yellow hues in the flame. How you can eliminate the cause is shown here.

Low pressure in the gas pipeline network, fluctuations. You should clarify information about a possible accident or temporary failure by calling the service company.

We eliminate possible malfunctions of the Lemax Patriot boiler

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Tell me how you can fix this problem. A Lemax Patriot 20 parapet gas boiler with an Eurosit 630 automation unit was installed. If you ignite, the main burner lights up well, but goes out within 10-20 seconds. The new launch does not change the situation. What could it be? Pre-check the thermocouple and draft sensor. Check the circuit contacts. Carefully dismantle the stationary pilot burner and clean it. Adjust the burner to lower gas pressure. We assume that the draft has deteriorated, as a result of which the pilot burner has a small amount of air during ignition of the main burner. The fire began to smoke thoroughly and the burner device burned non-stop, without dying out. The temperature does not rise above the set temperature while the flame is burning. There is a large coating of soot on the parts of the unit. The gas service says there is insufficient draft. How to fix the problem? The air flow has probably decreased. Maintenance needs to be done. Remove the burner assembly, clean and wash the burner and jets. The heat exchanger should be cleaned from the outside. Please tell us what the problem is if the device smokes? What should be done to resolve this issue? We assume that there is a weakening of thrust in the combustion chamber. We can advise you to clean the chimney duct. Tell me what to do if the Lemax Patriot 10 floor-standing boiler cannot ignite? I try to hold the control handle, click the ignition button, then hold it for about five minutes, release it, and the device goes out. Most likely the ignition tube is dirty. In such a situation, we recommend that you perform maintenance. There may also be oxide on the traction sensor terminals. Disconnect the clamps and clean them from oxidation. There is a problem with the Patriot 12.5 boiler with the 630 Eurosit automation device. When you press the ignition button, there is no gas supply to the burner mechanism. What could be the reason? When you press the button, fuel is supplied only to the igniter; it is not allowed to be supplied to the main gas burner device. This unit was installed. I don't like the cycle from pilot to main burner. Two pops are heard all the time. It should be? Most likely, it is necessary to adjust the automation according to gas pressure. We put into operation a similar unit with a Eurosit 630 gas valve, which does not want to function when the temperature rises to about 65 degrees. Am I asking for help to fix this problem? Most likely, the traction sensor starts to operate. We recommend that you have your chimney inspected. The same device has been in operation for five years. That week it experienced a heating failure at fifty degrees, although the fire continues to burn vigorously. What's happened? It looks like there is a blockage in the gas supply pipe from the automation unit on the gas burner device, and also in the burner nozzle. At home there is a gas boiler Lemax Patriot 16 with automatic Eurosit 630. Two days ago a problem appeared. It goes out when the wind blows on the igniter. Just recently I replaced the thermocouple, but the result was zero. How to fix it? When the main burner turns on, this leads to a decrease in the gas supply to the ignition mechanism, which means the automation unit must turn on. You need to increase the gas supply to the igniter. This usually happens due to low pressure in the system. In another case, a decrease in chimney draft occurred if it was installed incorrectly. Explain to me why this model periodically stops working, mainly when there are strong gusts of wind and bad weather outside. How should the issue be resolved? At the moment the ignition device is started, the solenoid valve should operate in approximately 20 seconds. When the igniter goes out, the EMC function is interrupted within ten seconds, at which time you will hear a click. Four years ago I installed a Lemax Patriot 12.5 parapet boiler at the dacha. The building is small, the area is no more than thirty square meters. You might think that the consumption is not too high, and the water does not heat up more than sixty-five degrees. The house has 2 radiators for ten sections. I don’t understand how to increase the heating temperature? To fix the problem, you need to install a circulation pump. Often there is a drop in pressure in the gas pipeline. For what reasons does boiler overheating often occur during operation? A significant factor is that circulation in the heating circuit has disappeared. It is also possible that the filter is clogged or there is a large accumulation of air in the heating system. I got into trouble. When we close the cold water tap and open the hot water tap, all the water leaves the heating circuit. Explain why this is so? It appears that the heating circuit's make-up valve is not functioning properly. It passes water through both pipelines. If there is coolant pressure in the system, then movement in the opposite direction cannot occur. Why does the device make noise, gurgle, and occasionally howl loudly and clap loudly? The water in the system is thoroughly enriched with oxygen. When heated, air evaporates, causing noise to be heard. If the unit settings are incorrect, the gas valve or bypass may howl. Popping noises during startup indicate a malfunction of the ignition mechanism. At the end of 2014, I independently launched the Lemax Patriot 12.5 boiler. Somewhere after a few months there was a glitch. I set the temperature, but it doesn’t hold it. Tell me, what is the reason? Apparently, there are problems with the automation, and when the temperature rises by 60 degrees, the nozzles turn off. It is necessary to configure the automation to perform the functions correctly. Another reason may be that the unit’s power has been selected inappropriately in relation to the areas that need to be heated. I installed this unit myself in the middle of this year. We made a conversion to liquefied gas. In just a few months, almost 10 cubic meters were consumed. At the moment there is a large amount of soot inside the unit, and the burner has started to smoke. What does this mean? Too much soot deposits in the firebox indicate that the burner is poorly adjusted, causing the fuel to not burn completely. It is also possible that the gas mixture is of poor quality. To prevent the burner from smoking, it is recommended to periodically carry out wet cleaning. I put this unit into operation. When starting, the burner device lights up and goes out immediately. It seems to me that the ignition device is faulty. How to fix this problem? You need to check whether the sound of the igniter sparking is heard when the cable is removed for ignition. If not, the ignition transformer must be replaced. If the sound appears, replace the igniter electrode or the burner itself. Recently there was a problem with the Patriot 20 boiler. Water began to flow. It worked properly for a total of 3 months. Maybe someone can explain why the water is dripping? It may drip due to high pressure in the heating system. There is also probably destruction of the walls of the heat exchange device. Water hammer can also cause leaks in boilers. I’m thinking of connecting this unit in a private house. I wonder what the standard gas supply pressure (methane/propane) should be for such devices? In this type of boiler devices, the standard gas supply pressure (natural/liquefied) is 150/300 Pa. I had the same device installed. The other day I noticed a problem with its operation. The boiler starts, but the heating does not heat. What is the problem? There may be an accumulation of air inside the radiators or a lot of scale in the heat exchanger. Try washing it. We use this unit in our apartment. It worked flawlessly until this evening. It is currently experiencing a malfunction. The device overheats every day. Can you help me fix this problem? It is possible that scale has built up, causing the duct to become clogged. You need to clean the device. The other day we had a problem with our heating boiler. The unit operated for only 3 weeks. After that, it suddenly stopped reaching the set temperature. Maybe someone can tell me why this happened? The gas pressure in the heating system is less than recommended. We need to inspect the gas valve. Most likely there is excess lubricant inside. The extra one needs to be removed. Explain how to properly pump up the expansion tank? The expansion tank is inflated with any available pump to the pressure recommended according to the passport. Basically the average volume is 1-1.5 bar. To pump up the expander, according to the regulations, you need to drain the coolant from the boiler. You can drain it through the drain fitting or through the water tap, turning off the influx of hot water supply. The Lemax Patriot 7.5 parapet gas boiler does not start. If you keep the start button pressed, the burner works normally. But if you don’t press the button, the device turns off. Can you tell me the reason for the breakdown? Most likely, the thermocouple is damaged or the gas valve is broken. There is also a decrease in gas pressure in the supply pipeline. Sometimes there is a lack of voltage on the control board. Please tell us what actions need to be taken to change the type of gas? To do this, it is recommended to change the main burner nozzles. Next, change the modulator supply voltage. And at the end, adjust the pressure parameter at maximum and minimum. What operating principle does the heating system safety valve use? Such a valve, adjusted to the operating pressure, serves the heating system. It is not permitted to use a safety valve to drain water from the system. The pressure of the heating system periodically increases. I reduce the pressure in the expansion tank to 2.2-2.4 atmospheres. Could it be that the heating system water comes from the hot water supply pipes? The rise in pressure in the heating system is formed by the following main factors. The pressure for the expansion tank is not set. The fill valve is leaking. There's a problem. The start is very bad. The pilot light is on, but there is no fire on the main burner. Please tell me what is the reason? It looks like the ignition device is faulty. You need to check the boiler and clean the ignition mechanism. Please help clarify the situation with the chimney duct? For two days now there has been a return draft, and smoke began pouring immediately into the kitchen. I did the chimney myself. It is a steel pipe. There must have been some mistake made. The main factor may be an incorrectly manufactured chimney duct design. Soot contamination is possible, which significantly reduces its efficiency. It is also advisable to check exhaust vents in residential areas.

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BOSCH - REPAIR

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We installed an Arderia esr 2.13 ffcd boiler. If my coolant pressure drops slightly by a couple of notches over 2-3 days, could the reason be a faulty three-way valve (there are no leaks from the radiators)?

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The gas boiler Arderia 2.35 is in operation. Tell me about reducing power. I heard something about modulation, fan speed, etc. Is it really possible to reduce power?

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BUDERUS FLOOR

We installed and connected the Buderus Logano G234-WS-44 kW boiler, automatic Logomatic 4211. Heating is based on cylinders without hot water, and the jets for reduced gas were also replaced. We survived the winter, the cylinders were replaced, all without problems. Then in the spring, when the outside temperature was +16+18, the boiler began to turn off for a long time and when turned on, it began to display a burner error on the screen and the red button light on the front wall came on. We pressed the button, turned the power back on and everything worked. This happened several times, then the boiler was turned off completely for the summer, what could be the problem?

BUDERUS WALL

In the single-circuit Buderus 072, is the BKN coil circuit heated by the same heat exchanger as for heating or the same as on the 2-circuit one that is used for DHW?

VAILLANT - REPAIR

Tell me, for Vaillant wall-mounted gas boilers, are there real/actual differences for the better in the new generation turboTEC plus VU/5-5 compared to /3-5?

VAILLANT - ADJUSTMENTS

There is a malfunction in the boiler, the green LED (power) is flashing, the instructions say that the thermal protection has tripped, the green indicator is flashing, even if nothing is connected to the board. How to fix? I checked all SMD resistors and transistors, everything is fine.

DAEWOO

In operation there is a double-circuit gas boiler Daewoo Gasboiler with an electronic panel. When the DHW is turned on, the heating heats up, the operating mode is summer. I removed the three-way valve, there is no dirt or wear. It seems that the board does not control the three-way valve. How to check?

ELECTROLUX

The Electrolux Basic Xi wall-mounted boiler has been installed and connected. A problem began that the boiler stopped seeing the flame and turned off the gas supply after 7-8 seconds. And after 3 attempts it gave error E1. How can I fix it?

KOREA STAR

Koreastar boiler malfunction. The heating works perfectly, the hot water comes intermittently, when you turn on the hot water tap, cold water comes out first, then boiling water. After a few seconds it’s cool, then boiling water again. What could be the problem?

FERROLI

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JUNKERS

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NAVIEN

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OASIS

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SAUNIER DUVAL

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VIESSMANN

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WESTEN

Problem starting the Westen Pulsar D boiler. Piezo ignition works, but there is no flame, error E01 after a crackling sound. I moved the fork around.

BERETTA

The Novella floor-standing gas boiler is blocked - the green lights on the panel are on and nothing else happens. How to fix?

ARISTON

An Ariston gas wall-mounted boiler has been installed and connected, which does not hold pressure at all: while cooling the heated water, the pressure drops to zero, although water is regularly filled. What about the pressure?

SIME

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SOLLY

Please tell me how to solve the problem. The Solly Standard boiler, whenever you try to turn it on or hot water, displays a GS error.

WOLF

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DEMRAD

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KITURAMI

The Kiturami world boiler is malfunctioning and stops periodically. I clean the flame sensor and the unit works fine for a while, but soon the same thing happens again. He also began to smoke heavily. Maybe the problem is that the chimney is short, and it needs to be lengthened?

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KEBER

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CELTIC

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