Atag Q 25CR Fault codes & diagnostics

Your boiler is struggling to detect the flow of water through its system, which means it cannot safely heat your home or provide hot water.

Your boiler is struggling to accurately read the temperature of the water returning to it, which prevents it from heating your home reliably.

Your boiler is having trouble detecting the temperature of the water coming from your taps, which means it cannot heat your hot water properly.

Your boiler's electronic control system has lost its internal connection, meaning the main brain can no longer talk to the other components to request heating or hot water.

Your boiler has detected that the water pressure inside your heating system is either too low or too high, so it has safely shut down to prevent damage.

Your boiler has stopped working because the water pressure inside the heating system has become too high.

Your boiler has detected that a critical safety connection inside its control panel has come loose or is missing, which prevents it from operating correctly.

Your boiler has stopped working because the fan responsible for moving air and removing exhaust gases inside the unit failed to start.

Your boiler has failed to light the flame after several attempts and has switched itself off for safety.

Your boiler's internal fan, which is responsible for safely venting fumes, is failing to spin at the correct speed, causing the system to stop working for safety reasons.

Your boiler has stopped working because it cannot move water through the system effectively, likely due to a circulation problem or a blockage.

Your boiler is struggling to accurately read or control the temperature of the water flowing through your heating system.

Your boiler has detected that the water it is trying to heat is reaching a dangerously high temperature, so it has shut itself off to stay safe.

Your boiler has detected that the exhaust gases leaving the system are running hotter than they should be.

Your boiler has detected that the water pressure inside the system is too low for it to operate safely and efficiently.

Your boiler is having difficulty spinning the internal fan that clears out exhaust gases, which is preventing it from firing up safely.

Your boiler has detected that an external safety device, such as a heat sensor or chimney flue thermostat, has triggered a shutdown to prevent overheating or unsafe operation.

Your boiler's internal settings have been incorrectly configured, preventing it from safely regulating its power output.

Your boiler has automatically paused itself because the waste gases exiting the flue are dangerously hot, likely indicating an internal system blockage or a failed sensor.

Your boiler has detected that a critical safety sensor monitoring exhaust gases has become unplugged or disconnected, so it has safely shut itself down to prevent operation.

Your boiler has detected a faulty sensor reading in the exhaust system and has safely shut itself down to prevent it from running incorrectly.

Your boiler is failing to register the flow of water because of a faulty connection or sensor, meaning it cannot safely heat your home or water.

Your boiler is struggling to accurately measure the temperature of the water coming back into the system, so it has safely shut down to prevent overheating.

Your boiler's electronic parts have lost their connection to each other and have stopped working entirely to keep your home safe.

Your boiler has detected that the water pressure inside the system is either too low or the internal pump responsible for moving that water is not working correctly.

Your boiler has detected that it is running much hotter than it should be and has automatically switched itself off to prevent damage.

Your boiler has detected that it is running much hotter than it should be and has switched itself off to prevent internal damage.

Your boiler has automatically shut down because the water pressure inside the system has become too high.

Your boiler's internal air propulsion system has failed to activate, which prevents the unit from starting safely.

Your boiler has failed to start up or stay alight after several attempts to ignite the burner.

Your boiler's air circulation system isn't working correctly, which prevents the unit from starting safely so it has shut down to protect your home.

Your boiler has switched itself off because it cannot move water around the system effectively, likely due to a blockage or a pump issue.

Your boiler has failed to ignite the flame needed to produce heat or hot water, usually because the gas supply is interrupted or the ignition system is blocked.

Your boiler has detected that the water inside the heating system is not reaching or maintaining the correct temperature, leading the unit to stop operating to prevent damage.

Your boiler has detected an issue with the temperature of the water returning to the unit, suggesting the system is struggling to circulate water correctly or a sensor is misreading.

Your boiler is struggling to pump water around your heating system effectively, which is preventing it from working as it should.

Your boiler is struggling to light correctly or stay lit, which means it will not be able to provide heating or hot water until the issue is resolved.

Your boiler has detected an electrical short-circuit in its internal wiring, which has triggered an automatic safety shutdown to prevent further damage.

Your boiler is trying to start but cannot detect a flame, so it has safely shut down to prevent gas from building up.

Your boiler has detected a power issue or a software hiccup which has caused it to stop working for safety reasons.

Your boiler is struggling to calibrate itself correctly, which is preventing it from firing up reliably.

Your boiler has stopped working because a small protective fuse that powers the internal control system has blown.

Your boiler has detected that the water inside the system has become dangerously hot and has shut itself down to prevent damage or overheating.

Your boiler has shut down because the water returning from your radiators is too hot, which suggests an issue with how the water is flowing or being measured inside the system.

Your boiler's fan is failing to communicate with the control board, meaning the system cannot safely vent exhaust gases and has shut down to prevent potential danger.

Your boiler's electronic control panel is experiencing a communication error, meaning it cannot properly display information or talk to the main computer.

Your boiler has detected that the exhaust gases leaving your home are becoming dangerously hot and has shut itself down to prevent damage.

Your boiler has automatically stopped working because the water pressure inside your heating system has dropped too low.

Your boiler has detected that the water pressure inside your heating system is too high and has safely shut itself down to prevent damage.