– Enter menu 4.9.1 and increase the time for when heating is to be
prioritised. Note that if the time for heating is increased the time for
hot water production is reduced, which can give smaller amounts of
hot water.
• "Holiday mode" activated in menu 4.7.
– Enter menu 4.7 and select "Off".
• External switch for changing room temperature activated.
– Check any external switches.
• Air in the climate system.
– Vent the climate system.
• Closed valves to the climate system.
– Open the valves (contact your installer for assistance in finding them).
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 room temperature activated.
– Check any external switches.
UNEVEN ROOM TEMPERATURE.
• Incorrectly set heating curve.
– Fine-tune the heating curve in menu 1.9.1
• Too high set value on "dT at DOT"..
– Contact your installer!
• Uneven flow over the radiators.
– Contact your installer!
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Chapter 4 | Disturbances in comfort
NIBE F1255
