Agree with flameport, if it only runs when humidity levels rise then it's already too late to prevent condensation, it needs to run before humidity levels rise. I.E as soon as the room is occupied.
Fans do not prevent condensation.
Wet surfaces, eh? How did that happen?Not even when a bathroom is full of water vapour after a steamy shower and wet surfaces?
And it sucks the wet air outside the house And dry air flows in to replace it?
I have always thought that humidistats run on after the level has been reached - but only because I presumed they started the fan in the same way as the switched live. Obviously this one doesn't.
No.Could this by why the third core is needed then? Maybe tech support were right.
Having looked at the instructions, they do state the humidistat does work in the expected way, i.e. runs on, although you would never be able to tell, of course, (unless it clicks when humidistat switches off).
Yours stops if you unplug the humidistat. I don't know if that is just what it does.
It does seem to have some sophisticated way of measuring RH before it would turn on.
Can you not connect a temporary switch between L and T to at least show that it works properly?
For the last week the RH of the outside air (at Heathrow) has not dropped below 75%.
What have you got your fan set to?
Ok.95% supposedly if the instructions are the right way round (have tried the other way round too!). Very damp most of the time here in SE Wales. So shouldn't really be triggering at all at the moment.
No.Another idea - could be completely wrong - is there something about adjusting potentiometers only supposed to be done when the fan is isolated (turned off at the fuse box?).
Apart from above, what possible difference could it make?We've been adjusting the timer and humidistat without the fan being isolated. Again can't see why it would make a difference but the first person I spoke to at tech support said it should be done that way.
We ignored her because we thought she was talking rubbish..
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local