Nibe furnace display shows normal operation but room remains too cold

Safety: None specific beyond normal heating system precautions.

• Open TRVs fully: Temporarily open all thermostatic radiator valves to allow maximum flow.
• Increase heating curve: Raise the heating curve slope slightly in the Nibe controller and monitor room temperature over 24 hours.
• Check sensor reading: Compare room sensor reading with an accurate thermometer; adjust calibration in the menu if available.

If the system still cannot reach setpoint in cold weather, consult an installer about system sizing.