႑
Enter menu 1.1 "temperature" and adjust the offset of the heating
curve. If the room temperature is only low in cold weather the curve
slope in menu 1.9.1 "heating curve" needs adjusting up.
႑
Too low or no operating prioritisation of heat.
႑
Enter menu 4.9.1 and increase the time for when heating is to be pri-
oritised.
႑
"Holiday mode" activated in menu 4.7.
႑
Enter menu 4.7 and select “Off”.
႑
External switch for changing the room heating activated.
႑
Check any external switches.
႑
Air in the climate system.
႑
Vent the climate system.
႑
Closed valves to the climate system.
႑
Open the valves.
High room temperature
႑
Too high set value on the automatic heating control.
႑
Enter menu 1.1 (temperature) and adjust the heat curve offset
downwards. If the room temperature is only high in cold weather the
curve slope in menu 1.9.1 (heating curve) needs to be adjusted down.
႑
External switch for changing the room heating activated.
႑
Check any external switches.
Uneven room temperature.
႑
Incorrectly set heating curve.
႑
Adjust the heating curve in menu 1.9.1.
႑
Too high set value on "dT at DOT"..
႑
Contact your installer!
႑
Uneven flow over the radiators.
႑
Contact your installer!
Low system pressure
႑
Not enough water in the climate system.
႑
Top up the water in the climate system.
Low or a lack of ventilation
This part of the fault-tracing chapter only applies if the NIBE FLM accessory
is installed.
႑
The ventilation is not adjusted.
႑
Order ventilation adjustment.
႑
Filter blocked.
69NIBE™ F1255Chapter 4 | Disturbances in comfort
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