You will need to change the filter regardless as that’s what that’s saying. If you’re not able to run it through a cleaning cycle though I’d suggest getting rid as this needs to be done every few weeks to ensure the machine is clean. If not it can upset babies tummy
Change the filter and once it’s replaced, hold in the bottom with the same icon on the side of it until the light goes off
Contact tommee tippee. Ours gave up the ghost a couple of weeks ago and they sent us a new one as they have a warranty. It’s only the filter warning light - it needs changing when that flashes, so you’ll be able to use it for bottles in the meantime if that button still works. It took us a few days to sort out and for it to arrive.
You need to change the filter