Nibe VVM 320 - Troubleshooting Temperature and Pressure Issues; Resolving Low Room Temperature; Resolving High Room Temperature; Addressing Low System Pressure

• Indoor module in incorrect operating mode.
– Enter menu 4.2. If mode "auto" is selected, select a higher value on
"stop heating" in menu 4.9.2.
– If mode "manual" is selected, select "heating". If this is not enough,
select "addition".
• Too low set value on the automatic heating control.
– Enter menu 1.1 "temperature" and adjust the offset heating curve
up. If the room temperature is only low in cold weather the curve
slope in menu 1.9.1 "heating curve" needs adjusting up.
• "Holiday mode" activated in menu 4.7.
– Enter menu 4.7 and select "Off".
• External switch for changing the room heating activated.
– Check any external switches.
• Air in the climate system.
– Vent the climate system
• Closed valves to the climate system.
HIGH ROOM TEMPERATURE
• Too high set value on the automatic heating control.
– Enter menu 1.1 (temperature) and reduce the offset heating curve.
If the room temperature is only high in cold weather the curve slope
in menu 1.9.1 "heating curve" needs adjusting down.
• External switch for changing the room heating activated.
– Check any external switches.
LOW SYSTEM PRESSURE
• Not enough water in the climate system.
– Fill the climate system with water and check for leaks. In event of
repeated filling, contact the installer.
NIBE VVM 320Chapter 4 | Disturbances in comfort80