Nibe Ground Source Heat

An alarm bell symbol appears in the information window, accompanied by a solid red status light. This signals a problem that requires attention.

Alarm number 54 is related to the motor protection breaker. This alarm requires the motor protection breaker to be reset, along with a manual reset in the alarm menu.

Alarms in the range of 70 to 99 typically indicate a loss of communication between system components. These alarms reset automatically once communication is restored.

This message appears when the outdoor temperature is below +3 °C and heating is permitted, or when the compressor is blocked by an alarm and additional heat is not permitted. It can also indicate a missing outdoor temperature sensor.

This symbol indicates that the additional heat function of the heat pump is blocked. This may occur based on the selected operating mode, scheduled blocking, or an active alarm.

This symbol appears on the display indicating that the heat pump's compressor is currently blocked. This can happen depending on the selected operating mode, scheduled blocking, or due to an active alarm.

This indicates a communication fault with the accessory card. It resets automatically when communication is resumed. The accessory may be blocked.

This indicates a communication fault with the accessory card. It resets automatically when communication is resumed. The accessory may be blocked.

This information message indicates a communication fault occurred with the room unit. It resets automatically when communication is resumed.

This information message indicates a communication fault occurred with the base card (AA2 or AA26). It resets automatically when communication is resumed.

This alarm indicates missing communication with the input card (AA3). This blocks the relevant compressor, and if the heat pump is master, the supply is set to minimum.

This information message indicates a communication fault occurred with the entry card (AA3). It resets automatically when communication is resumed.

This information message indicates a communication fault occurred with the soft start card (AA10). It resets automatically when communication is resumed.

This alarm indicates that the voltage for compressor 1 has been below 160 V for 30 minutes. This can cause the compressor to block.

This alarm indicates that the voltage for compressor 2 has been below 160 V for 30 minutes. This can cause the compressor to block.

This alarm indicates that the voltage for compressor 3 has been below 160 V for 30 minutes. This can cause the compressor to block.

This error concerns the extract air temperature sensor (AZ1-BT21). Potential causes are an open or short circuit, a defective sensor, or a blocked circulation pump in the FLM module.

This error relates to the heating medium supply (external) sensor (BT25). Causes could be open/short circuits or a defective sensor. Additional heating might be blocked.

The heat pump has a serial number that does not exist in the system. This stops the compressors and deactivates the relay.

The heat pump program and serial numbers do not match. This stops the compressors and deactivates the relay.

This informational message indicates that the time set in menu 5.3.1 for the filter alarm has expired.

This indicates a fault with the exhaust air temperature sensor (AZ1-BT20). Causes include open or short circuits, a defective sensor, or a blocked circulation pump in the FLM module.

This alarm indicates that the fuses for the large soft start card are defective. This applies to 30, 40, and 60 kW models and will block the compressor.

This indicates a fault with the boiler sensor (EM1-BT52), possibly due to open/short circuits or a defective sensor. The shunt may close and the burner stops.

A green light illuminates on the front, and a service technician symbol appears in the information window. This indicates an 'information alarm' which automatically resets once the cause is rectified.

This alarm indicates the compressor has stopped three times in 240 minutes because the hot gas temperature exceeded 135 °C, indicating a defective compressor.

The heat pump detects that the phase order of the incoming electrical supply is wrong. This can block the compressor.

This alarm indicates bad circulation in the brine system, where the temperature of the outgoing brine (BT11) drops below the set minimum temperature and the alarm is set to permanent. This blocks the compressor.

The heat pump is reducing power consumption to below the set fuse size. The measured power consumption is exceeding the set fuse size, activating the load monitor.

If you are experiencing low hot water temperature or no hot water, check the filling valve and any installed mixing valve. The heat pump might also be in an incorrect operating mode.

This alarm indicates bad circulation in the brine system, detected by the low pressure sensor transmitter being below the cut-out value. This will block the compressor.

This alarm is triggered if there is leakage in the brine circuit. The brine level switch or pressure switch has tripped, blocking the compressor and brine pump.

This alarm indicates that the motor protection breaker has tripped, usually due to a defective compressor, which blocks the compressor.

This informational message indicates that the periodic hot water increase cycle did not reach the set stop temperature within 5 hours, suggesting problems with the heating process.

This alarm indicates bad circulation in the brine or heating medium side, causing a high or low pressure switch to trip. This will block the compressor.

The status light changes from solid green to solid red, and an alarm symbol appears in the information window. This indicates a malfunction the heat pump cannot fix on its own.

This error message relates to the brine out temperature sensor. Causes may include an open or short circuit, or a defective sensor. The compressor might be blocked.

This B alarm points to a continuous fault with the brine out sensor, potentially caused by open/short circuits or a defective sensor. The compressor might be blocked.

This alarm signals a problem with the condenser supply temperature sensor. It could be an open/short circuit or a defective sensor. The compressor might be blocked.

This B alarm indicates a continuous problem with the condenser supply sensor, likely due to open/short circuits or a defective sensor. The compressor may be blocked.

This B alarm signifies a continuous fault with the compressor sensor (BT29). Possible causes include open/short circuits or a defective sensor. The compressor might be blocked.

This B alarm indicates a continuous fault with the heating medium return (external) sensor (BT71). This could be due to open/short circuits or a defective sensor. Heating may be blocked in conjunction with alarm 25.

This alarm indicates an issue with the outdoor temperature sensor. It may be an open circuit or short circuit, or the sensor itself may be defective. The system might be set to minimum supply temperature.

This B alarm indicates a continuous issue with the outdoor temperature sensor. It may be due to an open/short circuit or a defective sensor. The system might be set to minimum supply temperature.

This alarm points to a problem with the heating medium return temperature sensor. Possible causes include an open or short circuit, or a defective sensor. The system may be attempting to reach maximum condenser supply.

This B alarm signifies a continuous problem with the heating medium return sensor. Causes include open/short circuits or a defective sensor. The compressor might be blocked during hot water charging.

This indicates a fault with the hot water charging temperature sensor. It could be due to an open or short circuit, or a faulty sensor. Hot water charging may be blocked.

This B alarm indicates a continuous fault with the hot water charging sensor, possibly due to open/short circuits or a defective sensor. Hot water charging may be blocked.

The status lamp illuminates yellow when the heat pump is in emergency mode. In this mode, hot water is not produced, and the compressor and brine pump are off.