NIBE · S2125 Air/Water Heat Pump
This alarm occurs after 5 repeated instances of low evaporation temperature within 4 hours, suggesting a lack of refrigerant or a blockage.
Click steps to track your progress.
Check the indoor module/control module display for specific action instructions.
Inspect the outdoor unit for any obstructions like leaves, snow, or ice that might affect airflow or heat exchange.
Ensure the system is not exposed to extreme wind conditions.
If the alarm persists, contact a qualified technician to check refrigerant levels and the expansion valve.