[pothole]

Thanks, I don't think low speed works on either fan and never has during my three years ownership. I'm in the UK, so can go quite a while without activating the fans due to generally cold ambient temps. Sometimes months.

So the situation as far as I know is that neither fan runs at low speed and one fan is intermittent at high speed. It definitely didn't trigger a couple of weeks ago when the other fan was running at high speed. But today both fans definitely were running at high speed as normal. Would this be the resistor pack?

Also, do the replacement motors come with resistor packs?