Further to this...
I bought transducer discs off Amazon for a tenner and it now works perfectly again.
https://www.amazon.co.uk/gp/product/B081R1K3GF/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Thanks Grenjs.
The fan is working, the transducer is working... but wasn't sure if it was working correctly. It's spitting water but i don't know if it should be making a finer mist.
A still from video...
Dimplex fire not misting.
Maybe transducer problem. How much water should it spray. I videoed it but can’t upload that can I? Does this look right? Seems to have a scratch in the centre of the disc....