Not a 3 wire cable

Getting power? Is each item plugged into outlet?
Is it wired right?
More information is needed like model number and wiring.
http://waterheatertimer.org/How-to-wire-switches.html#Broan

Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following link:
http://waterheatertimer.org/How-to-wire-switches.html#Broan
Add comment with more information
Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

I'm not sure what is going on without full and complete description of wiring and switches:
Add a comment with exact information for possible help.
Specs say 20 amp circuit is needed: so 20 amp circuit breaker + 12 gauge wire are required.
Heater uses 1500 watts, so it pulls a lot of power if same circuit breaker is used for several other rooms and a TV etc. Turn off everything else and see if problem persists.
Sell sheet for product says: Energy efficient lighting - uses one 27-watt (max.) high efficiency GU24 based fluorescent lamp.
Turn off power, and disconnect ground wire. Turn power back on and switch on the heater-lite and see if there is a fault to ground.
Use a different switch.

Yes the black and blue can be hooked together as well as the two whites, then they will come on together.

The switch that you have works like 3 seperate switches. most of these switches will have gold screws
on one side and silver screws on the other side, lets say that the left is gold and the right is silver, and
the switch may also have a green screw for ground. your 12/2 with ground is your main hot, you may
want to mark it with a piece of tape, so you know it's the incoming hot. the ground off your hot will tie,
to the green screw on switch and continue and tie to your vent light which should also have a ground
the white coming off the hot is your neutral, it will go straight to your white or whites on your heater.
the black hot wire at your switch will go to each gold terminal on one side of the switch,there are two
ways you can do this, go to one side and just run a jumper, or put one wire on each gold screw and
tie in to your hot-black wire with a wire nut. now for the switch legs, you will need to run from your, switch
to your heater either another pair of 12/2s or a 12/3, each side of the switch that has one silver screw,
it's easier with a 12/3 normally a 12/3 will have a red,black,white,and ground.
top switch red to red on heater,black to black on light and the white blue on the vent,so from your switch
to the heater you would have to run a12/2 you would not use the black only the white and ground.
remember the white-neutral coming from the switch will be tied to all the whites at the vent,light,heater
except for the 10/3. the 10/3 is used stricktly for the switch legs. good luck!

I wish we had more information to go on here.

1) You have 2 cables to to the Heat-Vent-Light
One cable is 12-3 and 1 cable is 12-3

2) That's where it's gets fuzzy.
What color wires are on HentVentLight?
Is power at the ceiling box or at the wall box?
What other wires are inside the wall box?
What kind of switch are you installing?

3) With that number of wires, it sounds like power is at ceiling box.
Power would arrive at ceiling box on one cable that has a Hot-black and Neutral-white wire.

4) Start at wall box:
Let's suppose you are installing a wall device that has 3 individual switches, with one switch for each HentVentLight.
The Hot wire from ceiling box would drop down into wall box on a black wire, and this wire connects to brass screw on switch.
Wire going to heater connects to one of the silver screws.
Wire to fan to another silver screw
Wire to light to another silver screw.

5) Work at ceiling box:
Let's suppose your HentVentLight has 4 wires: Black for light, Red for fan, Blue for heater, and White Neutral.
The white neutral connects to Neutral wire as described in #3.
Black, Red and Blue connect to each of the wires that come up from switch.

Add a comment for more free help, and fill in the missing information.

Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Here is a link to the instruction manual. Page three shows a wiring diagram for separate switches.
http://www.centralvacuumstores.com/meta/pdfs/info/744NT+Installation+Guide.pdf

This is the Switch NuTone Broan recommends for that fan.
http://broan.com/display/router.asp?ProductID=2949

Hi .. with only bone switch for this combo unit, the connections would be like this .. all ahites together with the romex white , all colors, red, black, blue with the romex black, all greens together IF you had more than one switch , then the red, black, blue would be connected separately to one switch eack and separately to a 4 wire romex from the switch to the combo unit.

Does it start before the mark as you turn it if so replace the switch. power off first and check with a meter.

Hi,

go to www.broan.com from there you can look up that fan/light combo and download the installation manual which will give you the exploded view.

Broan Bathroom Fan Care and Cleaning

heatman101