Low or lack of ventilation — Reduced fan speed or blocked airflow (NIBE FLM accessory)

What does Low or lack of ventilation mean?

If a NIBE FLM accessory is installed, low or no ventilation indicates that the fan speed may be reduced, or there might be an obstruction in the ventilation system.

• Air filter is blocked.
• Exhaust air device is blocked or throttled down too much.
• Fan speed is set to a reduced mode.
• An external switch for changing fan speed is activated.

Click steps to track your progress.

1. 1

   Check and clean or replace the air filter if it is blocked.

2. 2

   Inspect exhaust air devices to ensure they are not blocked or excessively throttled.

3. 3

   Go to menu 1.2 and select 'normal' for the fan speed setting.

4. 4

   Check any external switches that might be overriding the fan speed setting to a reduced mode.

5. 5

   If the problem continues, contact your installer for ventilation system adjustment.