Buderus Logamax Plus GB062 Boiler

This error indicates that the water pressure within your boiler's heating system is below the required operating level. This low pressure can prevent the boiler from functioning correctly.

This error indicates that the boiler's fan is not operating, which is crucial for safe combustion and exhausting flue gases. Without the fan, the burner will not ignite.

This fault indicates that the differential pressure switch is open when it should be closed during the boiler's self-check, before ignition. This can prevent the burner from starting.

This is a safety lockout, indicating that a temperature limiter (either for the heat exchanger or flue gas) has tripped, or the differential pressure switch opened while the fan was running after ignition. This prevents overheating or unsafe combustion.

This error indicates a problem with the central heating flow temperature sensor (CH-NTC). This sensor is vital for measuring the temperature of water flowing out to your heating system.

This fault indicates a problem with the communication between the boiler and the control unit (thermostat). It can occur if connections are poor, cables are damaged, or if the control unit itself is faulty.

This error means the boiler attempted to ignite the burner but could not detect a flame. This typically results in the boiler locking out for safety.

This fault indicates a dangerous condition where the boiler detects a flame even after the gas supply has been commanded off. This is a severe safety lockout.

This fault indicates that an external contact connected to the boiler has been triggered, which might be an external safety device or a control input. This can cause the boiler to stop operation.

This error indicates that the hot water temperature sensor, which measures the domestic hot water temperature, is not functioning correctly. This could be due to a break, a short circuit, or incorrect resistance readings from the sensor.

This error occurs in system boilers when the cylinder or tank temperature sensor is not operating correctly. It could be due to a physical break, a short circuit in the sensor, or issues with its connection.

This is a general internal fault, indicating a problem within the boiler's program sequence or an issue with the main electrical voltage supply. It can prevent the boiler from operating.

This fault occurs either if the 'OK' button was held for an extended period (triggering a reset) or if there is a short circuit in a low voltage cable (e.g., STB or gas valve cable) to the frame.

This error means that the specific appliance code for your boiler model has not been set or is incorrect in the system's configuration. The boiler needs to know its type to operate correctly.

This status indicates that the boiler's gradient control has detected a rapid increase in the flow water temperature, suggesting that the heating circuit might be blocked. The heating circuit will be temporarily blocked for 2 minutes as a safety measure.