Hey y'all,
My heater blow has stopped working. See the back of this there speed controller. The bottom 3 are all the 3 different inputs from the switch (technically the relay but lets keep it simpler). So each one is speed 1, 2 and 3.

The top connector goes to the positive on the fan motor:


It gives different speed based on the resistance of the coiled wire. The highest speed - 3 - is closest to the output and therefore has less coil to go through. Less coil = more powarz and therefore higher speed.



My question is - you can see the output (to the motor) is floating somewhere above the spring. It's very rusty. Is there a part missing? Can I fix this unit short of soldering a wire between?

Secondly, if someone has one of these I'd happily buy it off them

Cheers

ive got a spare one, but it does not work on speed 1 and 2, since the coil thingy is broken, made it work for a while by making the bits of coil touch where they broke, works perfectly at 3 thou

Cheers mate but I'd rather just jump the wires Can you tell which piece is missing on mine though?

i dont remember, can check that after work tomorrow
will upload some crapy mobile pic of it

I'm struggling to see from your pics bud, do these help?
http://www.flickr.com/photos/c_cardwell ... 121693593/

That's weird, yours looks exactly the same too. Hmm, maybe I should just replace the unit. Yours looks really clean as well, where did you get it?

Looks all there to me.

Whizz it over and I'll fix it. Don't whizz it over and I might remember to stick some pics up

Sounds like an option

I still don't understand though. Obviously it doesn't arc accross that gap so how is the connection made?

Speedy88 wrote:I still don't understand though. Obviously it doesn't arc accross that gap so how is the connection made?

Fairies!

What gap are you on about dude :p

The bimetallic?

He means the TCO.

The entire unit is just two resistors and a thermal cut-out. There's nothing "electronic" about it. I'll get some pics up later.

Hidden electricity! It's witchcraft I tells ya.

Ok cool then, makes more sense. May I whisk it over to you for a refurb then?

No problem and PM'd