Alarm Sound Not Being Stopped with script, help?

Basically the script below should make the alarm stop once it meets the requirements but it's not doing it. Anyone mind helping?

local alarm = Instance.new('Sound')
alarm.Parent = script.Parent
alarm.Name = "Alarm"
alarm.SoundId = "rbxassetid://130821037"
alarm.Looped = true
alarm.MaxDistance = "10000"
local size = math.random(10 , 30)
local heat = math.random(10 , 20)-- change if you wish to 

while true do
	wait(5)
	if script.Parent.Fire.Enabled == false then
		wait(math.random(1 , 10)) -- change
		script.Parent.Fire.Size = size
		script.Parent.Fire.Heat = heat
		script.Parent.Fire.Enabled = true
		script.Parent.Parent.other.Fire.Size = size
		script.Parent.Parent.other.Fire.Heat = heat
		script.Parent.Parent.other.Fire.Enabled = true
		script.Parent.Parent.other2.Fire.Size = size
		script.Parent.Parent.other2.Fire.Heat = heat
		script.Parent.Parent.other2.Fire.Enabled = true
		script.Parent.Parent.other3.Fire.Size = size
		script.Parent.Parent.other3.Fire.Heat = heat
		script.Parent.Parent.other3.Fire.Enabled = true
		script.Parent.Parent.Parent.Parent.StarterGui.ScreenGui.TextLabel.Text = "Fire"
		wait(5)
		print ("HOUSE FIRE!")
		size = script.Parent.Fire.Size + math.random(1 , 10) -- change this to what ever you want
		alarm:Play()
	elseif script.Parent.Fire.Enabled == false then
		if alarm.IsPlaying == true then
			alarm:Stop()
		end

end

end

The elseif is not running because the conditions for stopping the alarm are the same as the one to set the fire.

Look at your script!

See that if script.Parent.Fire.Enabled == false then and that elseif script.Parent.Fire.Enabled == false then over there?

Well, if fire is false, then the first one is always triggered because it's the first. If the fire is true, none will be triggered. So, you most pick one for each.

They can't be both == false, one of them should be == true

So, I'll suppose that you should modify the first "if then" so that it's triggered when it's true, and leave the second as how it is. (Or maybe the hole way wrong, It's your script, I don't know how do you want it to work!)

local alarm = Instance.new('Sound')
alarm.Parent = script.Parent
alarm.Name = "Alarm"
alarm.SoundId = "rbxassetid://130821037"
alarm.Looped = true
alarm.MaxDistance = "10000"
local size = math.random(10 , 30)
local heat = math.random(10 , 20) 

while true do
	wait(5)
	if script.Parent.Fire.Enabled == true then
		wait(math.random(1 , 10)) -- change
		script.Parent.Fire.Size = size
		script.Parent.Fire.Heat = heat
		script.Parent.Fire.Enabled = true
		script.Parent.Parent.other.Fire.Size = size
		script.Parent.Parent.other.Fire.Heat = heat
		script.Parent.Parent.other.Fire.Enabled = true
		script.Parent.Parent.other2.Fire.Size = size
		script.Parent.Parent.other2.Fire.Heat = heat
		script.Parent.Parent.other2.Fire.Enabled = true
		script.Parent.Parent.other3.Fire.Size = size
		script.Parent.Parent.other3.Fire.Heat = heat
		script.Parent.Parent.other3.Fire.Enabled = true
		script.Parent.Parent.Parent.Parent.StarterGui.ScreenGui.TextLabel.Text = "Fire" -- this will not work.
		wait(5)
		print ("HOUSE FIRE!")
		size = script.Parent.Fire.Size + math.random(1 , 10)
		alarm.Playing = true
	elseif script.Parent.Fire.Enabled == false and alarm.Playing == true then
		alarm.Playing = false
	end
end

This might be a better version. Hope it works.

In addition, in script.Parent.Parent.Parent.Parent.StarterGui.ScreenGui.TextLabel.Text = "Fire", this will not work if you run this game in Roblox (not studio), it is because changing the starterGui is just changing the Gui that gives to player upon their arrival to the game. You will need a localscript in order to change the player that is ALREADY in the game. If you need help transporting messages from this script to local script, check this wiki: http://wiki.roblox.com/index.php?title=Remote_Events_and_Functions

Hope it works!