I have a FLSUN extended bed printer I bought a few years back similar to the one in this link (https://www.aliexpress.com/item/32847633139.html?spm=a2g0o.productlist.0.0.19ea4e9eeaSZrD&algo_pvid=3948f016-cd1e-49dc-a140-1246bc00016a&algo_expid=3948f016-cd1e-49dc-a140-1246bc00016a-7&btsid=0ab6f82115869898286663410e318a&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_) and it worked fine for years up until recently as it cant seem to get over 180C because when connected to repetier host it gives:
Error: Heating failed,System stopped! Heater ID: 0
Error:printer halted.kill() called!