How to fix error E98 on a Baxi gas boiler

Decoding

The factory interpretation of error E25—reduced coolant circulation—does not provide a complete understanding of the essence of the problem. In the instructions for various models of the Baxi boiler, the emphasis is on blocking the pump. But this is not the only reason such a fault code appears on the display.

Control panel for gas boiler Baxi LUNA 3 comfort

Error e25 indicates an intense increase in temperature in the heating circuit. This parameter in Baksi units is determined by the difference in readings from sensors installed at the inlet and outlet of the boiler heat exchanger. When it grows at a speed above 1 0С/sec, the operation of the unit is blocked by the protection circuit. A decrease in fluid circulation is caused by several factors, therefore there is no clear recommendation for eliminating error E25. The algorithm of actions given in the article will allow you to figure out the reason for the appearance of this fault code in a short period of time.

Advice

If you have to periodically increase the pressure in the heating system with make-up, the fault code is caused by a slight leak of liquid due to a microcrack: the coolant level decreases gradually.
When, with a negative result of diagnostics of the circuit and the Baxi boiler, the cause of error E26 is not identified, and the pressure in the system periodically drops, you need to deal with the hidden leak. The difficulty of detecting the location of a defect in the evaporation of liquid from hot pipes and heating radiators - there will be no characteristic spots or puddles on the floor. But when the coolant cools down, they will appear, and therefore you should repeat the walk around the object some time after stopping the Baksi boiler. It is not difficult to repair a microcrack in plastic or metal - there are many appropriate materials and compositions on sale.

Increased hydraulic resistance

The flow rate is reduced due to contamination of the circuit and scale deposits.

A filter is installed at the inlet of the Baksi boiler, which serves to protect the heat exchanger from sediment from the pipes. A clogged mesh is the cause of error e26. Checking and rinsing takes just a few minutes.

Filter at the cold water inlet to the Baxi boiler

Heat exchange device. Liquids of increased hardness and high temperatures cause intense scale deposits in its cavity. The circulation speed gradually decreases, heating occurs faster, and fault code E26 is generated. The unit requires regular cleaning, which is done in a service workshop and at home. If the latter option does not provide the required quality, it will save time and cost the owner of the property free of charge.

Possible breakdowns during operation of Baxi geysers

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The automatic gas flow column Baksi SIG-2 14 i is in operation. Explain why it began to heat the water unsatisfactorily? What do you advise me to do to solve the problem? The first problem is that the heat exchanger is clogged. Increased deposits on the heat exchanger body will limit proper heating of the water, and the water heater will not heat the water well enough. Therefore, you need to clean the heat exchanger. Secondly, frequent overheating of the heat exchanger. This means that the unit is not being used properly. An increase in temperature serves as a source of scale formation, which stops heating of the coolant. In such a situation, it is recommended to replace the heat exchanger. We use a gas water heater of this model in our country house. After 5 years, the heat exchanger began to leak. The repair did not solve the problem, and after half a month I purchased a new water heater. The installer advised annual cleaning and maintenance. I cleaned it and did that. As a result, this device worked for 4 years, but the breakdown was the same - a heat exchanger leak. Why might this happen? We assume that the water is of poor quality, which causes the heat exchangers to fail. The same model is connected at the dacha. I just don’t understand why the water gets too hot from time to time? Where to look for the problem? The regulators are probably set incorrectly. It is necessary to switch them for the summer. Use the gas supply adjustment knob to reduce the gas on the burner, and then add water flow to the water heater. Recently a problem arose on the Baxi SIG-2 11p gas flow column with piezo ignition. The wick is lit, I leave it in this position for about 4 minutes. After that I switch to the operating mode, but the device fades out. What does this depend on? You need to disassemble the body, unscrew the tube through which gas flows to the wick, and rinse. In general, this should be done at least once a year, especially at the end of summer, because the windows are open and dust will get into the gas pipe. Help me figure out what problems the gas water heater sometimes performs poorly during the heating process. How can this be fixed? Presumably, the flame on the burner is weak, which means the membrane is damaged, and the pressure of the rod on the gas valve is too weak. You need to disconnect the water unit from the gas device. After this, remove the cover from the water unit and inspect the membrane for deformations, and if it is unsuitable, replace it. A year ago, a gas water heater from the same company was installed for heating. This week there was a problem during ignition. When a request for hot water is made, the igniter is ignited. It lights up and quickly goes out, and then the water heater starts up again. And so about 2 or 3 times. Then the operation of the device returns to normal. I can’t understand why the igniter flame does not ignite the main burner device? What could it be? Now the column works like this. A spark appears that ignites the wick. Then the spark supply ends, the wick burns for a short time and goes out. The device resumes supplying a spark discharge, the wick is ignited, the spark disappears, and after some time the main burner ignites. It can be assumed that there is a problem with the ionization sensor. First, you need to inspect it. Naturally, it’s better to mount a new one, but if that doesn’t work, you’ll have to clean this one with sandpaper. Also clean the burner using a wire brush. After these procedures, be sure to make sure that the burner flame is not yellow, but blue. In addition, the fire must reach the ionization sensor. We installed and launched a Baxi SIG-2 P gas instantaneous water heater last year. But in winter there is a systematic problem associated with a lack of gas, and moreover, the gas supplied is not clean. Help me troubleshoot? There is an adjustment screw at the bottom of the unit. It is necessary to turn the burner counterclockwise when the burner is on and adjust the correct amount of fire. When summer comes, you can turn it back. If this operation does not eliminate the problem, then the pressure in the line is indeed weak. The geyser has been in operation for about 7 years. Two days ago, the igniter stopped turning on, and if you try to light it with matches, the flame may immediately go out when you switch the regulator to operating mode. What to do? We have the same problem. The technicians say that the thermocouple needs to be replaced. Tell me about the semi-automatic Baksi household gas water heater. When opening a hot water tap, the device suddenly goes out. I cleaned the thermocouple, but there was no result. We examined the membrane, it is normal, although we installed a new one just in case. The water pressure has decreased, although only slightly. What is the problem? It looks like there is a lack of traction or the traction sensor is broken. We advise you to check this. Sometimes, instead of a draft sensor, a curved tube is installed on top of the column. This tube supplies air, which is necessary for combustion. If there is a problem with the draft, smoke passes through the tube, not air. Accordingly, there will not be enough oxygen for the burner, which will cause it to go out. In addition, check the pilot flame. It must completely enclose the thermocouple. If this does not happen, then the thermocouple does not heat up well and does not send an ignition signal to the main burner. Yesterday I noticed a serious problem: the battery-powered gas water heater Baxi SIG-2 14i turns off during operation. Can anyone tell me what could be the reason and how to eliminate it? The water unit membrane may be faulty. It is deformed or worn, so it needs to be replaced. You can also inspect the EMC valve, since there is an electromagnetic coil inside it that could have broken. The coil cannot be repaired, only replaced. I have a question about a malfunctioning gas water heater. A few minutes after starting, the device finally goes out, and then the ignition device can only be ignited with matches. What could have happened? Apparently, there is no draft in the chimney, so the reverse draft sensor is triggered and the water heater goes out. It is necessary to check the chimney duct. It is also possible for the heat exchanger to overheat when the temperature increases to 90 degrees. In this case, the overheating sensor is triggered and turns off the unit. To reduce the water temperature, we recommend reducing the gas supply to the main burner using the regulator. Would you like to know why a gas water heater starts to burn and immediately goes out? How should this problem be resolved? The first reason is a dirty chimney. Presumably, a large amount of soot has accumulated inside it, and the combustion products are not completely removed, as a result of which the draft sensor is triggered. It will disconnect the thermocouple and the water heater flame will go out. Another reason is a strong wind, which can extinguish the flame of the apparatus if there is a draft in the house. Consequently, the protective mechanism is activated and blocks the gas supply. Try to protect the building from strong winds. But still, you should not completely block access to fresh air, since the equipment must work with an open window. If there is no fresh air, the draft will be poor and the flame will begin to go out. A Baxi SIG-2 11i gas water heater is installed at the dacha. Please explain why it heats the water intensely? What should be done to solve the problem? The suspected cause may be high blood pressure. Set the coolant heating temperature regulator to maximum flow, and set the gas regulator to minimum gas flow to the burner. This adjustment can help reduce the temperature of the water leaving the water heater. Why sometimes there is a delay in ignition and the burner makes popping noises? The pilot burner fire does not reach the main burner, or it is insufficient. The igniter and injector need to be cleaned. After this, carry out configuration operations. Gas water heater malfunction. I'm trying to start it, a spark is visible, although the igniter does not ignite. What is the problem? The igniter nozzle is clogged. Needs to be cleaned. The ignition electrode is in the wrong position. Configure it. There is air in the gas pipeline. Remove the air. We installed and launched the Baxi SIG-2 11 P gas water heater with piezo ignition. The problem is that the device starts to work, and then goes out after a few seconds. This usually happens at night, when the equipment has been idle for a long time. Moreover, if it heats water periodically, it no longer turns off. With long clicks of the microswitch, the water heater begins to flare up and continues to work normally for three to four days. What could this be? There is no need to flip the microswitch, just replace it with a new one because yours is broken. The device operates approximately as follows. First, a spark appears and is supplied to the ignition device. An ionization signal follows, gas is supplied to the main burner, and a flame appears. If there is no signal that the igniter is working, the main burner will also not start. In your case, the igniter transmits a signal, although the main burner cannot start. Ignition takes place, but there is no signal, therefore the flow of gas is blocked. You need to clean the electrode. There is a device from this particular company. Why does the ignition device go out during ignition? What kind of malfunction? The thermocouple has expired. Replace it. The coil is damaged. Need to replace. There is a problem with the operation of the Baxi SIG-2 11 i geyser. The picture is this: the ignition device lights up, but the main burner does not function. What to do and how to fix it? Low water pressure. Make the required system pressure. We advise you to turn the regulator to the extreme right position. The membrane is damaged. Needs to be changed. At the dacha there is a flow-type water pump. If you turn off the water, the gas burner does not go out. What is the cause of the problem? The seal in the gas valve becomes dirty. Make a diagnosis of it. Clean if necessary. The hydraulic valve piston may not move when open. Remove parts, clean, replace if necessary. Check the gas inlet pressure. Adjust if necessary. Change the cylinder pressure regulator. Please tell me why there is no spark when the device is turned on? The igniter wire has become disconnected. Secure the wires properly. Damage to the igniter. You must test this element and change it. Inoperative electrode. Replace it.

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Gas boilers
Electric boilers
Gas water heaters
Malfunctions and repairs of geysers
Water heaters
Boiler error codes
Troubleshooting boilers
Troubleshooting water heaters
Repair of indirect heating boilers
Troubleshooting electric convectors

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BOSCH TERM 4000

Models WR-13, WR-13. Specifications. Installation. Maintenance and adjustments.

NEVA 4510

Design and main components. Installation and connections.

NEVA 4511

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NEVA 4513

Adjustments and settings. Service maintenance.

NEVA

Design features. Malfunctions and maintenance.

NEVA LUX 5514

Elements and components. Installation and assembly. Operation and adjustments.

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NEVA REPAIR

In operation, the Neva VPG-12E gas water heater, after turning on the hot water tap, the water heater lights up, but the temperature does not rise above 20 degrees. The water pressure is normal, it does not respond to the regulator for increasing the flame, as it was 18-20 degrees, it remains so. What could be the problem?

ARISTON

I connected the Ariston Marco Polo Gi7s speaker. Everything is working. But the device turns on the second time. That is, you turn on the water, the column starts up, clicks and goes into error E1. Then he closed the tap, opened it and it started. Powered by a cylinder. Is this possible because after it works I turn off the gas?

ELECTROLUX

There is a malfunction of the Electrolux 275 geyser, when you turn on the hot water, everything lights up and works for 5-7 minutes, after which there is a click in it and it goes out along with the igniter. Tell me what is the problem?

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OASIS

Malfunction of the Oasis TUR 20 geyser. In the “Summer” mode, the gas and water regulator is at maximum. It goes out on its own, sometimes after 5 minutes, sometimes after 30. In the “Winter” mode, with any combination of controls, it goes out after 30-40 seconds. What can be wrong? Water supply via flexible hoses. Could they be the cause? If yes, what should I replace it with?

VECTOR

Tell me, I have this problem: when the water is turned off, the column lights up on its own, the temperature rises and does not turn off (I had to take out the batteries), I put the batteries back in (I don’t turn on the water), it lights up, what should I do?

ASTER

Help me find the reason, geyser Astra 8910-02, when hot water is turned on it goes out from time to time, I cleaned the thermocouple until it shines, the membrane is in good condition, but just in case I replaced it with a new one, the water pressure is less than that of cold water, what else note?

BOSCH

I installed and put into operation a Bosch WR 13 gas water heater. I switched the nozzles to liquefied gas, removed the jumper from j6, that is, switched it to liquefied gas mode, but the water heater does not work, who knows anything about this? When turned on, the green button lights up for a couple of seconds, and then the red button starts blinking and only the fan turns on.

JUNKERS

The Junkers gas water heater began to malfunction. It works for 15-20 minutes and goes out. You turn the water off and on, the igniter lights up, and after a few seconds it goes out, and you can do this no matter how many times, it doesn’t light up. A little time passes - it works, and everything repeats again. The water pressure is good, as is the gas pressure. What could be the reason?