• Circulation pump speed set too high.
– Enter menu 5.1.11 (pump speed heating medium)
and reduce the speed of the circulation pump.
• Uneven flow over the radiators.
– Adjust the flow distribution between the radiators.
GURGLING SOUND
This part of the troubleshooting chapter only applies if
the NIBE FLM accessory is installed.
• Not enough water in the water seal.
– Refill the water seal with water.
• Choked water seal.
– Check and adjust the condensation water hose.
NIBE F1155Chapter 10 | Disturbances in comfort64
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