I'm getting this error: AnimationTrack limit of 256 tracks, how do I fix this?

I'm getting the error: AnimationTrack limit of 256 tracks for one Animator exceeded, new animations will not be played. How do I clear animations from the animator so that I don't run into this error? I am using a character to open/close a door, so I made a couple of animation tracks for the character to either have to door open or closed. With the method I am using, I loop the animation every so often, checking if the door is supposed to be open or closed. This is my script currently:

closed= 6132531871
open = 6132539757
--load
local animopen = Instance.new("Animation",script.Parent)
animopen.AnimationId = "rbxassetid://"..open
local animclosed = Instance.new("Animation",script.Parent)
animclosed.AnimationId = "rbxassetid://"..closed

while true do
	val = script.Parent.Value.Value
	if val == true then
		local kopen = script.Parent.Humanoid:LoadAnimation(animopen)
		kopen:Play()
		wait(.2)
		print("open")
	elseif val == false then
		local kclosed = script.Parent.Humanoid:LoadAnimation(animclosed)
		kclosed:Play()
		wait(.2)
		print("closed")
	end
end

I've also tried to load 2 animations into Humanoid at the start, then call them afterwards, like this:

closed= 6132531871
open = 6132539757
--load
local animopen = Instance.new("Animation",script.Parent)
animopen.AnimationId = "rbxassetid://"..open
local animclosed = Instance.new("Animation",script.Parent)
animclosed.AnimationId = "rbxassetid://"..closed
local kopen = script.Parent.Humanoid:LoadAnimation(animopen)
local kclosed = script.Parent.Humanoid:LoadAnimation(animclosed)

while true do
	val = script.Parent.Value.Value
	if val == true then		kopen:Play()
		wait(.2)
		print("open")
	elseif val == false then
		kclosed:Play()
		wait(.2)
		print("closed")
	end
end

With the above script, it just gets stuck on one animation, whether I have val set to true or false.

Any ideas?