A fan with three air inlets – is there one inlet that produces almost no airflow? !
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The three air inlets are of the same size, but the airflow from one of them is very low. Why is that? The length of the air ducts also differs by little. Thank you. .
Is there something foreign in the pipeline, or is the flow blocked?
Take a look at the layout inside to see if it’s unbalanced
The arrangement is symmetrical. . I don’t know why the traffic is like this. .
Is there a filter that is clogged?
Draw the equipment and duct diagrams for your site; I already told you last time that the difficulty lies in the unequal lengths of the pipes, and if that’s the case, there won’t be any airflow: lol
Turn it on and off a few times, or take it apart to check; maybe it will work fine on its own. I seem to have heard of similar cases; no one was able to figure out the reason, but it got better on its own later