Grundfos ALPHA3 Pump

The pump's internal real-time clock is not functioning correctly. While this does not affect immediate pump operation, it will impact any scheduled operations that rely on the clock.

The electrical supply voltage to the pump is below the specified operating range. This alarm prevents the pump from functioning correctly or starting.

The pump is detecting water flow through it even when it is switched off and stopped. This indicates that other pumps or system sources are causing unwanted circulation through the unit.

The pump's motor is blocked, preventing it from starting. This is an alarm condition that will appear on the Grundfos GO Remote app and prevent normal operation.

The pump is running without sufficient liquid or the system pressure is below the required minimum. This is a protective measure to prevent pump damage, but it halts normal operation.

The pump has detected a critical internal fault, indicated by alarm codes 72, 76, or 85. This issue prevents the pump from operating correctly and requires attention.

The electrical supply voltage to the pump is exceeding the specified operating range. This alarm indicates a potential risk of damage to the pump's electronic components.

The pump has detected a minor internal fault, indicated by warning code 84. Normal pump operation might not be immediately affected, but it signals a potential developing issue that should be monitored.

The pump is not receiving power and is consequently not operating because a fuse in the electrical installation has blown.

The Grundfos GO Balance app disconnects from the ALPHA3 pump. This often occurs when the Bluetooth signal becomes too weak, especially when moving the smart device across different rooms during use.

The Grundfos GO Remote app cannot complete a firmware update. This can happen if your smart device does not meet the necessary conditions for the update process, such as having low battery or being out of range.

The housing of the Grundfos ALPHA3 pump becomes very hot to the touch. This condition is usually caused by the liquid being Pumpd, which may be scalding hot.

The heating system is not providing enough heat, indicating that the pump is not circulating water effectively or at the required rate.

The Grundfos ALPHA3 pump or its components show signs of physical damage. Operating a damaged product can be unsafe and may lead to serious injury, including electric shock.

The pump is not operating, and other common causes like power supply issues (blown fuse, tripped breaker) have been ruled out, indicating an internal defect.

The pump itself is making noise, such as rattling or gurgling, due to trapped air pockets inside its casing or impeller.

The pump is generating noise, often a grinding or cavitation sound, because the water pressure at its inlet is below the recommended minimum level.

The red LED on the pump's operating panel is flashing. This signals that a critical alarm has been detected, indicating a fault that prevents the pump from operating properly.

Audible noise, such as gurgling or bubbling, is present in the heating system pipes, indicating the presence of air pockets.

Audible noise in the system pipes is caused by excessive water flow, which can lead to turbulence, cavitation, or pipe vibrations.

The pump is not receiving power and is not operating because its associated current-operated or voltage-operated circuit breaker has tripped, interrupting the electrical supply.

The yellow LED on the pump's operating panel is continuously lit. This signals that a warning has been detected, indicating an issue that may affect performance but typically doesn't stop pump operation immediately.