Bathroom fan power

I have power (using a mains tester screwdriver ) going to the fan switch in air cupboard. Power showing going to the new fan.
It has a humidifier sensor. I ran the shower but nothing? And ideas.
It’s a new fan as the other one never worked when I moved in.

Asked by Tim on 6th Jan 2021
Expert Trade Answers
"Hi Tim,

If the fan has a humidifier sensor then it will have a separate switch live wire. You should have a 3 core and earth cable running from the isolator in your airing cupboard. Lots of fans are different but terminal inside the fan are usually identified by L - Permanent Live N - Permanent Neutral L1 - Switch Live.

Portal Electrical & Security"
Answered on 6th Jan 2021 - Member since Nov 2020 - report
"Using one of these screw drivers is no use for this job you will have to make sure you have a neutral connection and watch what you are doing as if there is a connection for a timer there will be a permanent LIVE cable at the fan connection you will also have to go and check the connection at the light switch for the fan or the triple pole switch for the fan if there is one.

Really if you are not sure what you are doing contact a recognised electrician not a handyman and they will carry out the repair to current standards.
Hope this helps."
Answered on 6th Jan 2021 - Member since Mar 2020 - report
"Hi Tim, you'll need a approved voltage tester to test between live and neutral for 230v. You'll probably need a qualified electrician to check everything over for you."
Answered on 6th Jan 2021 - Member since Nov 2020 - report
"You need first multimeter and check is it the correct load going to the fan."
Answered on 13th Jan 2021 - Member since Jan 2021 - report
"It sounds like you do not have the correct wires you will need a 3 core and cpc cable to make this work"
Answered on 14th Jan 2021 - Member since Jan 2021 - report
"On the instructions it should tell you what the humidity stat should be set at. Small dial or know inside the fan housing."
Answered on 22nd Jun 2021 - Member since Feb 2021 - report
"Call a qualified electrician
It’s a bathroom and extremely dangerous area to be messing around with electrical equipment"
Answered on 24th Jan 2021 - Member since Jan 2021 - report
"Does it have a transformer? Some fans are low voltage in a bathroom"
Answered on 4th Jul 2021 - Member since Jun 2021 - report
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