In Line Bathroonm Extractor Fan replacement

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In Line Bathroonm Extractor Fan replacement

Post by Stew22 » Wed Mar 28, 2018 12:39 pm

Help - I am trying to change my current in line bathroom extractor fan or a new quieter / more powerful model. The old fan has its own switch and is not linked to a light or anything else. It has a 3 wire connection running from the isolator switch with L, LS and N terminals. My new fan only has L,N and E terminals. Does this mean I cannot connect it?

Thanks for your help.

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Re: In Line Bathroonm Extractor Fan replacement

Post by wine~o » Wed Mar 28, 2018 6:08 pm


You could fit the new fan but it won't meet with the building regs

Your old fan has a timed overrun, your new one doesn't. To connect the new fan take the permanent live and isolate it safely. Switched live to live neutral to neutral etc.
Verwood Handyman

Verwood Handyman


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