Boiler

Errors or Error Codes for Cointra Boiler

Published

3 years ago

February 28, 2024

When your Cointra boiler starts showing unusual behavior or stops working altogether, it’s likely trying to communicate a specific problem through an error code. These codes are an efficient way for the device to indicate what’s failing or what needs to be checked. However, interpreting these codes can be challenging if you’re not familiar with them.

In this article, we present a complete table of error codes for Cointra boilers, along with their description, cause, and recommended solution. Before diving into the table, let’s clarify some concepts that might be useful to you:

Burner: It’s the part of the boiler where gas combustion occurs, generating the necessary heat to warm the water.
Detection or ignition electrode: Components that detect the presence of a flame or initiate the ignition process, respectively.
Gas valve: Regulates the flow of gas to the burner.
Temperature sensor: A device that measures the water or exhaust gas temperature, ensuring the boiler operates within safe ranges.
Electronic board or central unit: It’s the “brain” of the boiler, controlling and managing its operation through electronic circuits.

Now that we’ve clarified these terms, here’s the table of error codes:

Error	Description	Cause	Solution
A01	The burner does not ignite. Lack of gas		– Check that gas is correctly reaching the boiler and there’s no air in the pipes.– Anomaly in the detection or ignition electrode, check that the electrode is well placed and connected, and that it does not have incrustations. – Gas valve damaged, check the gas valve and replace it if necessary – Ignition power too low, adjust the ignition power
A02	Flame signal present with burner off		– Electrode anomaly, check the ionization electrode wiring. – Board anomaly, check the board
A03	Activation of the over-temperature protection		– Heating sensor damaged. – Check the position and operation of the heating sensor. – No water circulating in the installation, check the circulation pump – Air in the installation, purge the installation
A04	Activation of the flue gas safety device		– Anomaly F07 generated 3 times in the last 24 hours – See anomaly F07
A05	Activation of the fan protection		– Anomaly F15 generated for 1 consecutive hour
A06	No flame after the ignition phase		– Low gas pressure in the installation Check the gas pressure – Regulation of the minimum burner pressure. Check the pressures
A07	High flue gas temperature	The flue gas sensor detects an excessive temperature
A08	Activation of the over-temperature protection		– Heating sensor damaged – No water circulating in the installation – Air in the installation
A09	Activation of the over-temperature protection		– Return sensor damaged – No water circulating in the installation – Air in the installation
A10	Anomaly in the flow sensor		– Sensor damaged, short-circuited wiring check the wiring or replace the sensor. – Interrupted wiring
A11	Anomaly in the return sensor		– Sensor damaged. – Short-circuited wiring, check the wiring or replace the sensor. – Interrupted wiring
A13	Anomaly in the flue gas sensor		– Sensor damaged– Short-circuited wiring Check the wiring or replace the sensor– Interrupted wiring
A14	High flue gas temperature	Anomaly F07 generated 3 times in the last 24 hours
A23	Anomaly in the board parameters	Board parameter incorrectly configured
A24	Anomaly in the board parameters	Board parameter incorrectly configured
A26	Anomaly in the board parameters	Board parameter incorrectly configured
A42	Activation of the sensor control protection		– Heating sensor damaged – Return sensor damaged or disconnected
A54	Anomaly in the AGC01 central unit	Internal error of the AGC01 central unit
A55	Anomaly in the AGC01 central unit	Internal error of the AGC01 central unit
A56	– Incorrect calibration – Calibration procedure not finished		– Incorrect parameters – Electrode poorly located or damaged
A61	Anomaly in the AGC01 central unit	Internal error of the AGC01 central unit
A62	No communication between the central unit and the gas valve		– Central unit disconnected – Valve damaged, replace it
A63	Anomaly in the AGC01 central unit	Internal error of the AGC01 central unit
A64	Exceeded the maximum number of consecutive Resets		Disconnect the boiler for 60 s and connect it again.
A68	Error BCC Service key		– BCC Service key connected – Error loading BCC Service key file
F07	High flue gas temperature	The flue gas sensor detects an excessive temperature
F08	Activation of the over-temperature protection		– Heating sensor damaged – No water circulating in the installation – Air in the installation
F09	Activation of the over-temperature protection		– Return sensor damaged – No water circulating in the installation – Air in the installation
F10	Anomaly in the flow sensor		– Sensor damaged, short-circuited wiring check the wiring or replace the sensor. – Interrupted wiring
F11	Anomaly in the return sensor		– Sensor damaged. – Short-circuited wiring, check the wiring or replace the sensor. – Interrupted wiring
F12	Anomaly in the domestic hot water sensor		– Sensor damaged – Short-circuited wiring Check the wiring or replace the sensor– Interrupted wiring
F13	Anomaly in the flue gas sensor		– Sensor damaged– Short-circuited wiring Check the wiring or replace the sensor– Interrupted wiring
F15	Anomaly in the board parameters	Board parameter incorrectly configured
F20	Anomaly in the board parameters	Board parameter incorrectly configured
F21	Anomaly in the board parameters	Board parameter incorrectly configured
F34	Supply voltage below 170 V	Problems in the electrical network Check the electrical installation
F35	Abnormal network frequency	Problems in the electrical network. Check the electrical installation
F37	Incorrect water pressure in the installation		– Pressure too low, charge the installation. – Sensor damaged. Check the sensor
F39	Anomaly in the external probe		– Probe damaged or short-circuited wiring– Check the wiring or replace the sensor.– Probe disconnected after activating the adaptable temperature. – Reconnect the external probe or deactivate the adaptable temperature
F40	Anomaly in the board parameters	Board parameter incorrectly configured
F41	Activation of the maximum DELTA T protection		– Heating sensor damaged– Return sensor damaged – No water circulating in the installation – Air in the installation
F42	Activation of the sensor control protection		– Heating sensor damaged – Return sensor damaged or disconnected
F43	Intervention of the heat exchanger protection		– No circulation in the H2O installation – Check the circulation pump. – Air in the

Error codes in Cointra boiler

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