Disconnect the ventilation unit from the mains electricity supply.

Lift the latch to open the door of the Vallox ventilation unit.

Lift the door off.

Remove the extract air filter (C), the cell top bracket (E) and the heat recovery cell (D). See the section called “Replacing the filters (User)” and the section called “Cleaning the heat recovery cell (User)”.

Pull out the temperature sensor (figure 1) located at the top of the extract air duct (G). Remove the stopper screw (I) at the bottom of the duct. The extract air duct now comes out by turning and pushing it downwards simultaneously (figures 2 and 3).

Remove the temperature sensor from the resistance support (figure 4).

Remove the additional and post-heating radiator support, which is attached by two wing nuts (Vallox 110/145 MV) or screws (Vallox 096 MV) from below (figure 5).

Pull the radiator and the support out of the unit (figures 6 and 7) and remove the quick connector of the radiator wires.

The fan can now be cleaned in place. It is recommended that the fan be cleaned in place, i.e. without attempting to remove it.

To remove the fan for cleaning:

1. If necessary, remove the arm pins. Use pliers to press the pins straight, so that they are easier to install back later.

2. Push the fan gently upward (figure 9).

3. Pry the plastic lock to the right of the fan with a screwdriver, for example (figure 10).

4. The fan falls downwards.

5. Pull the fan out of the unit (figure 11).

6. Disconnect the fan wire quick connector (figure 12). The fan has now been removed for cleaning.

To reassemble the ventilation unit, follow the above steps in reverse order.

Close the door of the unit. Ensure that the safety switch catch of the door is touching the safety switch, allowing the unit to be turned on.

Plug the ventilation unit back into the mains.

The fan has now been checked and cleaned.