Lighting, Light Fixtures, Ceiling and Exhaust Fans - Strange fan / light issues

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View Full Version : Strange fan / light issues


puzzled
04-22-05, 09:37 PM
The problem I am having is that every time the light is on the fan runs and the light is very dim. When I turn the fan on with the light running the light dims more even to the point of not being visible when the fan is on max speed. I can control the fan properly without the light on but when the light is on the fan always runs.

Ok, I have a fan with light attachment and power at the ceiling…

I have three wires from ceiling (black, red, green)
There are three wires running from the wall switch to the ceiling (a single red wire coming from the fan switch and a black and red wire coming out of the light switch)

I have run the black ceiling wire to the fan and connected the red ceiling wire to the red wire running to the walls light switch. This then runs power back to the ceiling on the black wire coming from the switch that is then connected to the wire for the light on the fan.

The single red wire coming from the fan switch gets its power from inside the light switch. (Where the red wire connects to the light switch it has another wire leading into the fan switch) The red wire coming from the fan switch is then hooked into the fan back at the ceiling.

Any ideas? Sorry about the long winded explanation!


Cheers


GWIZ
04-22-05, 10:05 PM
Do you have any White/ Neutral wires in any of the box's ?
who ran the wiring from the switch to the fan ?

puzzled
04-22-05, 11:41 PM
The wiring was already there because the light and fan used to be separate... I didn't take it apart so I don't know the original configuration... The red wire coming out of the fan switch is covered with a white plastic slip... So i guess that would be classed as a white wire... None of the wires in the switch have power until I run power from the ceiling wires.

The fan has two wires blue and brown and there is a white wire on the fan for the light...


joed
04-23-05, 09:54 AM
You have the fan and light wired in series.
The description of your wire connections is confusing. Please try again and decscribe the all the connections in the fan box and the switch box.

puzzled
04-23-05, 12:23 PM
I will try to explain it better:
There are the standard three wires for supply at ceiling:
- Green
- Black
- Red

There are two switches:
-A fan
-A light

There are three wires running up the wall to the ceiling from the switches:

Two wires go into the light switch
-black
-Red

One goes into the fan switch
- White

There is a red wire joined to the red wire inside the light switch that runs into the fan switch

The fan itself has the following wires:
- White (Light)
- Brown
- Blue
- Green (ground)

Thanks for taking the time with it… I hope this makes it easier.

GWIZ
04-23-05, 06:35 PM
May be this will help, its my best guess.

Your wire colors are off. for what your doing.

I can only tell you how most people would have wired a light/fan with the power entering the switch box first.

You would have the power wires feeding into the switch box, black hot wire and the white neutral wire.
The white neutral wire would lead up to the ceiling box (un-switched), it would connect to the white wires from the light/fan

Neutral wires are never interrupted by a switch.
Neutral wires are white or maybe light gray.
Green wires are ground. The ground wires would all be pig-tailed together in each box.

The black hot wire inside the switch box would be pig-tailed, Tee off to feed the light switch and then to the fan switch
the other side of the light switch would have one wire going up to the brown wire on your light/fan unit.
The other side of the fan switch would have a wire going up to the Blue wire.
---------------------
The ceiling box would have 4 wires
ground green or bare
White/ neutral
Black to fan, Red to light or Black to light, Red to fan.
-----------------------
I would say
your brown wire is the light
Blue wire is the fan
The white goes to the neutral wire.
Green ground.

Some-some times having a black wire and a Red wire inside the same box, is for a 240 volt circuit.
You need to get someone to look at what you have for safety.

puzzled
04-23-05, 10:33 PM
Thanks for your help... I think I will call a sparky in to make sure it is done correctly... Couldn't cost too much.

Cheers,