Hi
We have the same Fridge Freezer. We have an E9 error code which when asked Kenwood what it meant they said they didn’t know and said we have to go to Currys Digital. They don’t know either! The ice maker stopped creating ice. We turned the unit off for 24hours and tried every suggestion on the internet. At some point after the ice makers started to work again, even thought the E9 error code remained. Some time after it stopped working again and it is still not working.
Espares say the replacement ice maker is this part, which fits Hisense freezers too.
https://www.espares.co.uk/product/es1768359
So I looked up E9 coe Hisense and found they say E9 is Ice maker sensor
malfunctions.
Looking at this manual now
https://www.manualslib.com/manual/1268945/Hisense-Rc-70ws4s.html?page=21#manual