Ni200 crown coils

[browzer]

I got given a crown tank with 2 spare ni200 coils so i primed the coil with juice and left it sitting in the tank over night to make sure it had plenty of juice and time to prime it as i have heard these coils need a gentle running in to prevent burning etc. Ive set my DNA for ni200 but even at 600c it is hitting temp protection is this normal. Im only running it at 40w and preheat for 1 second at 70w and at the recommended 450c it hits temp protect almost straight away even with the preheat turned off it still does the same the only way I can get a half decent lung full is at 600c but even then it hits temp protect. I had similar issues trying to get ss coils to work with temp control but thought ni200 was designed for temp control can anyone shed some light thanks.

[pacman]

Hi are you sure they are ni200 and not SS coils