2014 Polaris Sportsman 400 HO “HOT ENGINE” light

back story:

Changed the oil , removed screen, so I primed the pump by clamping the hose coming from the oil box.

No problems, let it run for 20 minutes that day, no light came on.

overflow and rad full!

Today I started it, hot engine light comes on, didn’t let it run long enough to see if fan would come on.

Unplugged the coolant temperature switch? I believe on the drivers side below the oil filter, and the light goes off?!

what is wrong, what should I replace if anything?

here is a video of what its doing

2014 Polaris Sportsman 400 HO “HOT ENGINE” light

back story:

Changed the oil , removed screen, so I primed the pump by clamping the hose coming from the oil box.

No problems, let it run for 20 minutes that day, no light came on.

overflow and rad full!

Today I started it, hot engine light comes on, didn’t let it run long enough to see if fan would come on.

Unplugged the coolant temperature switch? I believe on the drivers side below the oil filter, and the light goes off?!

what is wrong, what should I replace if anything?

here is a video of what its doing