A bathroom extractor fan is essential to clear the room of humidity and prevent damp. Fan and Lights Are Not Working. You'd be wrong there. The solution? This article will show how to install and wire the extractor fan. The old fan is wired up with Black, Grey and Brown wires. • Or a switch has stopped working on most cooker hoods the switches are built in to the PCB, but some are external. Installed Low Profile Extractor Fan With Humidistat and when switch on power it started run straight ( switch for LS been switched off). Thought it needs time but after 1 hour steel was running. Exhaust Fan. The fan then needs to be wired into the switch which will control when it is turned on or off. The bathroom already has a ceiling lightt controlled by a wall mounted switch outside the bathroom on the landing. Depending on the type of fan you have you may wire the switch in series with the fan, or for more complex fans which carry on running for a certain length of time after being switched off you will wire it to the fan itself. The red is a permanent live and you do not need that. If your fan is a non-timer one then you need blue for neutral and yellow as the switched live. • Fan blade warped or out of balance it might be touching its casing. I am replacing a knackered extractor fan in my bathroom and the wiring has me a little confused. Due to the air passageway the fan motor assembly can get very dirty and require cleaning. A shower extractor fan is essential in a room containing a shower in order to prevent condensation. Is the fan switch working, does voltage go in and back out of the switch, if not the switch needs to be replaced. When we got it home and unpacked we found a lead with a live and neutral cable,no plug. But the majority of fans are wired to work only alongside the bathroom light, which can be really wasteful. They can also provide extra light as well as heat. • No power to appliance. Does the fan motor spin freely. Lubricating the Exhaust Fan Motor Motor is excessively loud. Never work on a live circuit, you must ensure that the circuit that you are working on is isolated and cannot be switched back on accidentally. The fan has connections for a live, neutral, and switched live. Hi, we have purchased a cooker hood today form B & Q, we asked if it was connected via 3 pin plug or had to be hard wired in, 2 members of staff confirmed 3 pin plug. As long as the switch and wiring are rated for the amount of current, which unless you get a huge fan, it should be. Step 5 - Connecting the Switch. The Switch. Put the end in a bit of insulated terminal block (aka choc block) and tuck it out of the way inside the fan housing. I understand that the fan needs to be controlled through an isolator mounted on the wall outside the bathroom. Bathroom Fan Features Bathroom fans have multiple uses aside from improving air quality. Disconnected permanent light, it stopped but no any reaction to switch when give power them. A bathroom heater fan light can keep the bathroom well-lit and comfortable. • PCB fault. If you have the ability to install a new cable (or pull an extra wire, if the wires happen to be in conduit), you could use a device that has two switches that fit in a single gang box. Some heaters even operate on a separate switch from the fan so you can turn the fan on or the heater or both. Rewiring your bathroom circuit to allow fan and light to be operated independently. Black = Neutral Supply, Grey = Switched Live and Brown = Permanent Live. Dont worry all power is off! The new fan … My main question is regarding the wiring. Am replacing a knackered extractor fan require cleaning fan is a permanent.... 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