• Fan speed in forced mode.
– If NIBE FLM is connected to a compatible heat pump: Enter menu
1.2 and select “normal”.
If NIBE FLM is connected to another heat pump: Contact your in-
staller!
• External switch for changing the fan speed activated.
– Check any external switches.
GURGLING SOUND
• Not enough water in the water seal.
– Fill the water seal with water (see page 12)
• Choked water seal.
– Check and adjust the condensation water hose (see page 12).
NIBE FLMChapter 3 | Disturbances in comfort16