NIBE F1245PC Heat Pump
10 fault codes documented
Display not lit / Blank display — No information visible on the heat pump
The heat pump's display unit is not showing any information and appears blank or unlit. This prevents you from seeing operational status, settings, or any alarm messages.
Green status lamp — Normal operation
The heat pump is functioning correctly and operating as expected. This light indicates no current issues or alarms, providing continuous heating and hot water as set.
LP alarm — Low Pressure in the Heating System
The heat pump has detected a low-pressure condition within the heating or brine system. This can lead to inefficient operation or potential damage if not addressed.
Red status lamp and ALARM message — Heat pump malfunction detected
The heat pump has encountered a problem it cannot fix on its own. The status lamp changes from green to a continuous red, and an 'ALARM' message appears in the information window and display, often accompanied by an alarm bell icon.
Sensor fault BT1 — Temperature sensor BT1 malfunction
The heat pump has detected a malfunction with temperature sensor BT1. This sensor is crucial for monitoring specific temperatures within the system, and its fault can impact heating or hot water production.
Sensor fault BT2 — Temperature sensor BT2 malfunction
The heat pump has detected a malfunction with temperature sensor BT2. This sensor is crucial for monitoring specific temperatures within the system, and its fault can impact heating or hot water production.
Sensor fault BT20 — Temperature sensor BT20 malfunction
The heat pump has detected a malfunction with temperature sensor BT20. This sensor is crucial for monitoring specific temperatures within the system, and its fault can impact heating or hot water production.
Sensor fault BT6 — Temperature sensor BT6 malfunction
The heat pump has detected a malfunction with temperature sensor BT6. This sensor is crucial for monitoring specific temperatures within the system, and its fault can impact heating or hot water production.
TB alarm — Thermal Blockage or Boiler Overheat Detected
The heat pump has registered a thermal blockage or an overheat condition, which is a critical alarm. This prevents the heat pump from operating normally to protect its components from damage.
Yellow status lamp — Heat pump in emergency (aid) mode
The heat pump is currently operating in an emergency or 'aid mode,' indicated by a continuous yellow light. This typically means it's producing heat and/or hot water using supplementary heating (like an immersion heater) because the main compressor might be offline due to an unresolved underlying problem.