Heater blowing hot air

[HRG]

That'll be the sun then I reckon I know enough about it to get a feel for what's going on now... Gimme a bell after the weekend

[Del 203]

I just fit my by-pass pipe in a month or so

[HRG]

Pah, I reckon it's only a closed loop Wheatstone Bridge with a variable resistance(See, I've been reading up!)

The circuit must look something like the diagram bottom left of this page.

[Del 203]

[Pasco]

Del 203 said:

[HRG]

And those pots... They're the feedback ones, not the control ones.

[BliarOut]

DustyC said:

Just thought I'd add something that may be useful to others.
The small potentiometers that are the feedback for the various heating and ventilation valves available from Maplins as part number UH03D at £0.31 each.#
http://www.maplin.co.uk/Module.aspx?ModuleNo=6499&...

Full spec sheet for the components here which suprisingly show the exact part fitted to the Griff (well, to mine anyway).
http://www.maplin.co.uk/Media/PDFs/Module%206499.p...

Those UH03D's now come with the common connector at the top instead of the bottom, you have to bend it outwards over the top of the pot and make a small groove in the plastic housing with a soldering iron. Still do the job just fine.