Connecting Bathroom Fan to Light Circuit: Layout, Wiring, 2 Fan Modes, Contactor Setup

Question

I have the following layout: 1. Bathroom light circuit (let's call them L1 and N1) 2. Fan circuits (2 cables enabling 2 fan operation modes and a phase wire - let's call them N2.1, N2.2 and L2 respectively) What I would like to achieve: Connect the 1st fan operation mode to the bathroom...

kozi966 · Accepted Answer

We will help, call an electrician! It can't be wireless. Diagram:

Mario-1990 · Answer

It is not very easy to understand something from your description, take pictures of this fan and its connections, insert it and we will think about it.

Falco76 · Answer

Pull the two wires from the light to the fan and that's it. You turn on the light, you turn on the fan.

l3g4to · Answer

As I thought. The problem is that I noticed there is a low voltage on the two cables N2.1 and N2.2 from the fan. When I press the switch, everything works as it should - the fan and the light turn on. However, when I turn off the switch, the fan turns off and the bulb glows slightly. I can close the circuit by connecting the cables to both L1 and L2 contacts, so I suspect it's the same phase.

Krzysztof Reszka · Answer

Let a colleague give the type of this fan, because it looks like a fan with a constant phase for a humidity sensor or a temporary switch-off.

Pittt · Answer

What happens when it is turned on?
You probably have L2.1, L2.2 and N2 in the fan. So you have to replace L with N. In order for N to be constant and control L. It must be the same in lighting. You cannot switch N in one circuit and L in the other and connect them.

And as a colleague wrote above, the dual-function fan must be constantly powered.

l3g4to · Answer

Helios ELS-VE 60/30

Pittt · Answer

Like I said, you connect N permanently and you control L, not as you tried.
Plus constant power supply.

https://www.heliosselect.de/cms/front_content.php?idart=66&idcat=17&artnr=536

However, if the manufacturer suggests an additional contact for first gear, perhaps connecting to it in parallel with lighting could cause a malfunction.

l3g4to · Answer

Thanks for the suggestion - I'll check it tomorrow morning and let you know.

misiekt · Answer

Just in case, if this fan will be installed in the ventilation duct and there is a flow heater in the bathroom, it is better not to install it at all. Of course, if you know that, no problem.

l3g4to · Answer

Thanks @misiekt. Although it was installed from the very beginning (developer status), I did not install it from scratch.

Haitauer · Answer

Hi,
I have a similar - well, maybe a little - problem.

I have a double switch in my bathroom and two light modes (2, 3 or 5). On one switch 2, on the other 3 lights.

I wanted to connect the fan so that it would work with one light mode and the other and both at once. So that regardless of how many lights I turned on the fan would work. How to connect it?

I would like to add that if I wanted to give (+) from the socket and (-) from the lights - or vice versa, it either breaks the plugs or all the lights shine at once.

And I was already dumbfounded. The installation was laid by an electrician, but he probably forgot to describe the cables ... I'm not an electrician - will you help? I will be grateful!
Regards.

Connecting Bathroom Fan to Light Circuit: Layout, Wiring, 2 Fan Modes, Contactor Setup

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