C. Sorsby asks this question, which concerns a 12V bathroom extractor fan not being set with sufficient overrun to clear condensation. It is answered by Vent-Axia (Theme - HVAC):
Question: I have a new Vent-Axia 12V bathroom extractor fan. It comes on when the bathroom light is switched on, and continues to run for a couple of minutes after the light is switched off.
However, it doesn't 'run on' long enough to clear the condensation from using the shower. How do I readjust it?
Answer: You will usually find that if you isolate the power, then remove the front cover, you can see an adjustment dial. This can be rotated to reduce the overrun time.
If you can give us a product reference number, we can offer information specific to your product.
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