I bought a brand new tekin to go with my eco power slingshot 17.5 which is also brand new. I installed it in my vintage rc10 however, it's giving me the codes that it isn't the correct motor, the ESC or motor shorted out, or check solder joints. I think my joints are okay.

I've set the brushless motor options and low voltage cut off. Still flashes with 1,2,6,7. Any wait to find out if I shorted it out or it came defective?