Celtic Gas Boiler Error Codes The remote control panel provides the ability to maintain comfortable conditions in the room without being directly next to the heating system. In addition, the remote control has a self-monitoring function, which simplifies fault diagnosis, since you can immediately see the error codes generated by the Celtic boiler.
Celtic Boiler Error Code Solutions
Celtic Boiler Error Code A6
It means that there is no ignition. The ionization flame sensor, which monitors the ignition, reports a malfunction. This part detects the presence of a flame and stops the operation of the Celtic boiler if the main burner burns poorly or if there are difficulties with gas flow. The mode of operation is terminated after three unsuccessful starts. To resume the work process, you must hold down the R key. Violation of the functions of the gas valve – The actions of the gas valve are controlled by the electronics board.
This part is tested by measuring voltage and resistance. If it is found that the readings are out of specification, it is recommended that the valve be replaced. There is no gas supply to the system – There is a valve in the gas distribution system that shuts off the gas inflow. As a result, a failure at the start of the device may occur due to a closed valve. Poor contact or no signal from the ionization flame sensor. Faulty control board – When ignition is performed normally, but the device still immediately goes out, then most likely the electronic board does not recognize the flame. In this case, it is recommended to do its testing.
Celtic Boiler Error Code A4 / AA
Overheating of the heat exchanger of the Celtic boiler. The device stops. The overheating safety thermostat has switched on – The temperature sensor and the overheating thermostat are most often located on the outlet pipe of the primary heat exchanger. The functional task of the thermostat is to ensure the safety of the boiler unit from an excessive increase in temperature. An emergency situation may occur due to problems with the thermostat, temperature sensor, as well as in case of difficulty in the operation of the main circulation circuit. Faulty temperature sensor
The control board receives an incorrect signal or the contact between the sensor and the electronic board is broken. Damaged superheat thermostat – If the sensor is operational, but an actual liquid superheat is detected, then most likely there is a violation of the circulation of the coolant in the heating circuit. Blockage of the main heat exchanger or filter element of the main circuit (insufficient circulation process indicates high heating of the coolant). Damage to the circulation pump or blockage of air in the heating system.
Celtic Boiler Error Code A5
Indicates low pressure in the system. The main factors causing this problem: reduced fluid pressure in the heating circuit. Poor contact between pressure switch and control board. Defective pressure switch. First of all, you need to check the pressure gauge readings. In many cases, the problem is eliminated by using a make-up valve, which is designed to fill the coolant into the heating circuit. If the problem reoccurs, then there is likely a fluid leak. The circulation pump, main heat exchanger, excess pressure relief valve, damaged gaskets, make-up valve and other components can leak. Leakage is determined at the time of visual inspection of the hydraulic components.
Celtic Boiler Error Code A2 / AE
Insufficient traction. In order to ensure reliable and safe operation of the device, it is necessary to create a draft for the removal of flue gases so that they do not enter the room. This is monitored by automation, and in the event of some problems, the draft sensor will work, and the gas appliance will stop working. Possible sources of lack of draft: limited size of the chimney, inaccuracy in installation, clogging, ice on the inner wall. Limiting the size of the flue duct causes insufficient draft. The chimney pipe is too long It is recommended to carefully read the instruction manual for the gas boiler and observe the relevant requirements. A sufficiently long horizontal section of the flue pipe can cause a lack of necessary draft.
Damage to the draft sensor When a vacuum is formed in the inlet tube, a slight click will be noticeable. Poor contact between the traction sensor relay and the electronic board, condensate in the tubes, as well as improper connection of the tubes to the pneumatic relay. Damaged fan parts – There is a blockage in the fan impeller. There is no lubrication on the fan shaft, so it does not generate the necessary speed. There is no contact between the control board and the fan. Accordingly,
AC Celtic Boiler Error Code
hot water temperature sensor is not working properly. This indicates a failure of the DHW circuit temperature sensor or the permissible temperature has been exceeded. The main factors under which this problem occurs: the hot water temperature sensor is damaged. Violation of the contact of the control board with the temperature sensor on the hot water supply. Control board burned out. When the hot water temperature sensor is working and firmly connected to the electronic board, although the unit gives an error, then the control board is probably faulty.
Celtic Boiler Error Code A7 / A8
Ignition problem. This situation is issued if the ignition does not work or the burner flame is extinguished. It is necessary to inspect the contacts between the ignition device and the flame electrode, and also between the gas valve and the board. One of the factors of flame failure is insufficient traction.
AB Celtic Boiler Error Code
Failure of the temperature sensor of the heating system. This code indicates that the temperature sensor of the heating system has broken or the required temperature has risen. An open in the circuit of the heating circuit temperature sensor – This problem occurs when the contact of the temperature sensor with the electronics board is broken, or the temperature is below the recommended one. Five seconds after the detection of the accident, the Celtic boiler should return to normal operation if the malfunction occurred spontaneously. It is necessary to make sure that there is no moisture on the sensor connector and the controller connector. If there is no moisture, it is recommended to replace the temperature sensor.
The appearance of a short circuit in the temperature sensor of the heating system – This failure most often occurs due to a short circuit in the temperature sensor circuit or the water temperature is much higher than required. First, it is recommended to measure the resistance of the temperature sensor. If the resistance parameters differ from the standard, the sensor should be changed. If replacing the temperature sensor does not work, change the controller.
The Celtic boiler is in operation. This week, error A6 lights up almost around the clock. After resetting with the reset button, the unit sometimes turns on satisfactorily, but this does not happen often. I recently removed the air intake cover and it works better. What is the fault?
When it gives an error on the chimney, we recommend that you open the protective covers. This will help draw air out of the room. Following this, check the chimney for ice and, if any, remove it. In the event of a fire-related accident, you should find out if there is a gas supply to the room.
AB error is regularly visible on the gas boiler. Can you help me figure out what she’s talking about?
This code refers to a problem with the temperature sensor of the heating system. It looks like it needs to be replaced.
For what reason does the Celtic boiler not turn on? In this case, it often starts to produce an AA error. How to fix it?
This failure often occurs due to some problems with the thermostat, temperature sensor, as well as malfunctions of the main circulation circuit. It is possible that the heat exchanger has overheated. If the temperature sensor and thermostat are working, then the problem is in the electronic board. You must replace it.
What is the problem if the machine does not start and displays error code A5? The pressure holds normally, no leaks are visible. I’ve tried unplugging it, but the problem persists. What is the cause of the problem?
A fault code often occurs when the fluid pressure in the heating system decreases. In this case, you need to check the pressure sensor. It is possible that the problem is in it.
The problem of the device looks like this: hot water supply is set to 40 degrees. When hot water is turned on, the gas burner device burns for a short time and quickly goes out. This cycle happens all the time. From the mixer, cold water flows, then warm (not hot). Shows error A4 from time to time. For what reason did this happen?
This circumstance indicates overheating in the DHW circuit. Most likely, the heat exchanger is clogged with debris, or the thermostat is not set correctly.
There was such a problem. During ignition, the device displays an error code A8. When you reboot, it turns on normally, but as soon as the burner starts to work, incomprehensible clicks are heard, and then an error is displayed. I replaced the ionization electrode, flushed the flow sensor, turned the plug over, but there was no improvement. Who has experienced this?
This problem occurs in several cases. Breakage of the ignition electrode. The gas supply is incorrect. Damaged electronics board.
The boiler turned itself off and shows the code A5. What to do?
There is no water in the unit or the pressure switch sensor is defective. First fill the heating system.
The gas boiler stops working with error code AE. Blowing and cleaning helped for a short time. What can be done?
This situation indicates unsatisfactory draft, and it is necessary to check the flue gas exhaust system. It is likely that the membrane is sticking. In other cases, it is necessary to contact specialists for a thorough diagnosis of the unit with its further.
At home we use the Celtic boiler. The error with the AC code began to appear. The device itself does the work, the water temperature level is set manually. When it was installed, apparently, they overheated, since they turned on the temperature maintenance mode. There is no outdoor air temperature sensor. For what reason did this happen?
There is probably damage to the DHW temperature sensor. Otherwise, the electronic board is damaged.
The device performs the functions for approximately a few minutes, after which the burner is turned off and error A2 is generated. It glows for no more than a minute, the burner starts working again, and the device performs its functions normally for another 3-4 minutes, and so on constantly. This code, based on the instruction manual, means that the draft sensor has tripped, but the chimney channel is not contaminated, combustion products are removed well. Please tell me what is the cause of the problem?
In your case, the main factors for the lack of traction are: problems with the traction sensor. Violation of the contact between the pressure switch and the control board. The presence of condensate, as well as incorrect connection of the tubes to the pressure switch. Fan failure. It doesn’t seem to be getting the required RPM.