Ender 3 V2 temperature too low

Good day everyone I hope all is well,

Please assist I have a creality ender 3V2 it had thermal runaway so I changed the entire hot end assembly ( nozzle , heater block, heater cartridge, thermistor as well as heat sink) but now the nozzle temp stays at 522 and when I try to change the temp it starts then alarms and says nozzle temp to low,

Any advice or where I should look

What I’ve done so far

Checked the hot bed and nozzle thermistor plugs haven’t been switched, switched the left and right leads on the heater cartridge connected to the board, updated the firmware

Please assist