Hello @SirRance
I think you have the Pins for the Ender3 in the config, that was a different Board with different Pin-Names.
For the 4.2.2-Board you have to use different Pin-Names:
[extruder]
sensor_pin: PC5
[heater_bed]
sensor_pin: PC4
If you have other issues after that, maybe you have to use another config-example.
The “printer-creality-ender3-v2-2020.cfg” in your Klipper “config_examples”-Folder should work with the 4.2.2-Board.
/edit
You have to use the other config!
All the Pin-Names are different! 
/edit-end
You can look at the Pins for the Board here:
https://klipper.discourse.group/t/creality-board-4-2-2-and-4-2-7-schematics/3104
(Follow the lines from the Connector to the IC to find the Pin-Names)