Why does my VC 6 L MC vacuum cleaner blow but not suck?

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Accepted Answer

If your VC 6 L MC vacuum cleaner blows normally but does not suck, this usually indicates an air flow problem or a blockage. Here are the checks to perform in order:

1. Check and clean the filter

A dirty filter is the most common cause of low or no suction. The VC 6 L MC has a semi-automatic button cleaning system for regular maintenance:

Turn on the device
Insert the hose into the cleaning opening
Press 3 times on the cleaning button

If this action does not improve suction, proceed with a manual cleaning: rinse the filter (class L) with cold water and let it dry completely before reinstalling.

2. Check the tank and empty if full

A full tank limits or completely stops suction. Empty the dust container (capacity 6 liters) as soon as it is full, especially if you have vacuumed wood shavings or fine dust.

3. Inspect the hose and nozzles

Blockages in the hose or nozzles significantly reduce air flow:

Check that the hose is not bent or crushed
Visually inspect the air passage in the hose
Check the three types of nozzles (flat, brush, fabric) to rule out any blockage
Also adjust the regulation ring on the hose to optimize the flow

4. Check that the blowing mode is disabled

The VC 6 L MC has a separate blowing function. If you accidentally activated the blowing mode and blocked the air return, suction will not work. Check the positioning of the switch and connections.

If after these checks suction does not return, contact Flex support as the motor or priming system may require servicing.

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