HR cell bypass test

To test the operation of the heat recovery cell bypass damper of the ventilation unit:

  1. Select Service menu.
  2. Activate the test mode by pressing the On/Off button in the right top corner of the Test mode display until the value is On:
  3. To test the operation of the heaters in the Bypass flap position area:
    • Normal operation – The damper is in the winter position (closed) and the air flow passes through the heat recovery cell.
    • HR cell bypass – The damper is in the summer position (open) and the air flow is directed past the heat recovery cell.
Open the unit to ensure that the bypass damper moves into the right position.