Koreastar Gas Boiler Error Codes The unit is equipped with a self-diagnosis system, which notifies about malfunctions by symbols on the display. Errors marked with the A code cause the unit to be blocked. In this case, you must manually reset the device by pressing the Reset button. Errors marked with the code F cause the device to turn off temporarily with automatic activation after the parameter that caused the fault comes to the required values.
Koreastar Boiler Error Code Solutions
Koreastar Boiler Error Code A01
It means that there is no ignition. The flame ionization sensor signals a device failure. Such a part analyzes the presence of a flame and suspends the operating cycle of the Korea Star boiler during incomplete combustion of the main burner or in case of gas supply problems. Work is suspended after 3 unsatisfactory starts. To return to work, press and hold the Reset button.
Gas valve failure – The gas valve is electronically controlled. Diagnostics of this element is carried out by measuring voltage and resistance. If it is found that the readings do not correspond to the nominal characteristics, it is necessary to replace the valve with a working one. There is no gas flow to the appliance – There is a valve in the gas distribution system that limits the flow of gas. Consequently, a malfunction at the time of starting the device may occur due to a blocked tap. Bad contact or no signal detected from the flame ionization sensor. Faulty control board – If the ignition cycle is normal, but the unit still suddenly shuts down, then the control board is probably unable to detect the flame. Based on this, it is recommended to test it.
Koreastar Boiler Error Code A03 / F41
The Koreastar boiler is overheated. The unit is blocked. The overheating thermostat is activated – The temperature sensor and the overheating thermostat are mainly located on the outlet pipe of the main heat exchanger. An important function of the thermostat is to ensure the safety of the apparatus from an unnecessary increase in temperature. An emergency situation may occur due to problems in the thermostat, temperature sensor, as well as in the event of a malfunction in the main circulation circuit. Temperature sensor problems – The electronic board receives an incorrect signal or poor contact between the control board and the sensor.
Koreastar Boiler Error Code A08
Damage to the overheating thermostat – If the component is operational, but a real overheating of the coolant is detected, then there is probably a problem with the circulation of the coolant in the main circuit. The main heat exchanger or the heating circuit filter is clogged (low circulation level gives high heating of the liquid). Damage to the circulation pump or there is an air blockage in the heating system.
Koreastar Boiler Error Code F37
Talks about low pressure inside the system. Possible reasons for this problem: low fluid pressure in the heating circuit. Contact failure between the control board and the minimum pressure switch. Pressure switch failure. First of all, you should look at the values \u200b\u200bof the pressure gauge. Most often, a failure is eliminated using a make-up valve, which is installed to fill the heating system with coolant. If the failure resumed, then there is probably a coolant leak. A hydraulic pump, a primary heat exchanger, a safety valve, damaged seals and gaskets, a feed valve and other parts can leak. Leakage is determined at the time of visual inspection of the hydraulic components.
Koreastar Boiler Error Code F05
There is no traction. In order to ensure reliable and safe operation of the apparatus, it is necessary to provide draft to remove combustion products so that they do not enter the living quarters. The smoke output is monitored by electronics, and when any problems appear, the draft sensor will work and the gas appliance will stop working. The main reasons due to which there may be a lack of draft: small-sized diameter of the chimney channel, design mismatch, blockage, icing of the inner wall. Narrowing the dimensions of the chimney causes insufficient draft. The length of the flue pipes is exceeded. We advise you to carefully read the installation instructions for the gas boiler and follow the relevant requirements. A large length of the horizontal section of the chimney pipe can cause a lack of necessary draft.
Malfunction of the pressure switch-draught sensor – When a vacuum is created in the inlet tube, a characteristic click can be detected. Lack of contact between the control board and the pneumatic relay-traction sensor, the presence of condensate, as well as poor connection of the tubes to the pneumatic relay. Fan Damage – The fan impeller is clogged. There is not enough lubrication on the fan shaft, which is why it cannot develop the required speed. Contact failure between the electronic board and the fan. There is not enough lubrication on the fan shaft, which is why it cannot develop the required speed. Contact failure between the electronic board and the fan. There is not enough lubrication on the fan shaft, which is why it cannot develop the required speed. Contact failure between the electronic board and the fan.
Koreastar Boiler Error Code F11
Malfunction of the hot water temperature sensor. This code indicates that the temperature sensor in the hot water circuit is faulty or the allowable temperature has risen. The main factors in which this problem occurs: the temperature sensor for hot water supply is defective. Contact failure between the electronic board and the DHW temperature sensor. Failure of the electronic board. If the DHW temperature sensor is good and firmly connected to the electronic control board, but the device shows an error, then the electronic control board probably needs to be replaced.
Koreastar Boiler Error Code A02
Problems during ignition. This code occurs when the ignition is not working or there is a burner flameout. It is recommended to inspect the contacts between the ignition unit and the flame sensor, and also between the gas valve and the board. Poor draft may be the main factor in flameout.
Koreastar Boiler Error Code F10
The heating circuit temperature sensor is not working correctly. This indicates that the heating circuit temperature sensor is out of order or the recommended temperature is too high. Open circuit of the temperature sensor in the heating circuit – This malfunction may occur if there is no contact between the temperature sensor and the electronics board, or the temperature is below the recommended one. After five seconds have elapsed after a fault is detected, the Koreastar boiler will restore correct operation if the fault occurs spontaneously. It is required to make sure that there is no moisture on the sensor connector and the control board connector.
If there is no moisture, the temperature sensor must be changed. The occurrence of a short circuit in the temperature sensor of the heating circuit – This failure may occur due to a short circuit in the temperature sensor circuit or the temperature of the coolant is higher than the nominal value. The first step is to measure the resistance of the temperature sensor. If the resistance parameters differ from the standard, it is necessary to change the temperature sensor. When installing a new sensor does not help, change the controller.
The Korea Star boiler is in operation. This week, almost every day, it starts to give error A01. After a reset using the reset button, the device occasionally starts without problems, but this happens sporadically. I recently removed the air intake plug and it worked much better. What might be wrong?
If it shows a smoke exhaust error, it is necessary to open the protective covers. This will help draw air out of your home. Following this, inspect the chimney pipe for the presence of ice and, if any, clean it. If there is a flame failure, it is recommended to find out if gas is being supplied to the house.
Error F10 is regularly displayed on the boiler. Can’t figure out what it means?
This code may indicate a breakdown of the temperature sensor of the heating circuit. Perhaps it needs to be changed.
Why did the Koreastar boiler stop turning on? Error A08 is also often lit. What to do?
This failure can occur due to various problems with the thermostat, temperature sensor, and in addition, if the main circulation circuit malfunctions. The heat exchanger may have overheated. If the temperature sensor and thermostat are not damaged, then the problem is with the electronic board. It should be replaced.
What is the problem if the boiler does not start and error F37 is displayed? The pressure holds normally, no leaks are visible. Tried to turn off the mains, but the problem is not fixed. What’s the matter?
The fault code may indicate low fluid pressure in the heating circuit. With such a malfunction, it is recommended to check the pressure sensor. It’s probably damaged.
The malfunction of the device is as follows: DHW is turned on at 40 degrees. When hot water is turned on, the burner device lights up for a few seconds and quickly goes out. This process occurs all the time. Cold water flows from the tap, then warm (not hot). Error code A03 is repeatedly issued. Why is this happening?
This code means that the DHW coolant has boiled. It looks like there is a blockage in the heat exchanger, or the thermostat is not set correctly.
We have such a problem. During ignition, the device issues an error code A02. When we reboot, it turns on normally, but the burner barely lights up, strange clicks occur, and then an error is displayed. I replaced the ionization electrode, washed the flow sensor, removed the earth from the plug, but there was no result. What happened?
This problem can occur for several reasons. Damage to the control electrode. Incorrect gas supply. Electronic board defective.
The device has switched off autonomously and displays code F37. How to be?
Lack of water in the unit or defective pressure switch. First add water to the heating circuit.
The gas appliance switches off with error message F05. Cleaning and purging helped for a while. What happened?
This situation signals a weak draft, and it is recommended to check the chimney channel. It is likely that the membrane is sticking. Otherwise, you need to call a specialist for a detailed check of the boiler, followed by it.
We have a Koreastar boiler in our house. An error with the F11 code began to be shown. The device itself functions, the temperature level of the liquid is adjusted by a manual switch. When it was mounted, it seems that overheating occurred, as they started the auto mode by temperature. We do not have an external air temperature sensor. What is the reason and how to fix it?
The DHW temperature sensor is probably defective. In some cases, the electronic board is damaged.
The device performs work for about two or three minutes, then the gas burner stops working, and an error with the F05 code is generated. It glows for no more than a minute, the burner lights up again, and the device works smoothly for another three or four minutes, and so on constantly. This code, judging by the manual, means that the draft sensor is triggered, however, the chimney channel is not contaminated, combustion products are removed well. Can you help me figure out what is causing the problem?
In your case, the probable causes that affect the lack of traction may be: damage to the traction sensor. Lack of contact between the control board and the thrust sensor. Condensation in the tubes, as well as incorrect connection of the tubes to the air relay. Incorrect fan operation. It may be operating at low torque.