MVHR fills the flat with sewer stench

[OneMoreTerry]

Hello DIY-ers, my MVHR pumps the most foul air into every room of my apartment, usually just after I've poured water down the kitchen sink. There is a condensation drain on the MVHR, which runs down to plastic inline attachment, and I think this is a check valve. See photo.

My diagnosis: either the valve is stuck open, allowing drain smell to back up into the MVHR, or the check valve requires some water like an S-bend, and there is not enough condensation in the MVHR to keep the value wet.

If water is required for the valve, I could pour some into the MVHR.

If the valve is stuck open, it will have to be replaced, and I need to get it off. Unfortunatly, I can't get it off because the pipework is rigidly attached to the walls with Talon hinged pipe clips.

Is there a tool for removing a Talon hinged pipe clip? Or shall I Dremel them off?

 

[StephenOak]

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You are more likely to get help if you post in the appropriate section. The Moderators can move this for you. Click on 'Report' to ask for that.

 

[cross thread]

Undo the unions you will get that out easily enough to check

 

[Hugh Jaleak]

Small screwdriver should be enough to prise open the pipe clips.