Unity won't Instantiate PLEASE HELP!

So my door won’t instantiate. That’s it.

Code:
using UnityEngine;
using System.Collections;

public class RandomDoor : MonoBehaviour {

	public int randomDoor1;
	public int randomDoor2;
	public int randomDoor3;
	public bool spawnedDoor1 = false;
	private bool spawnedDoor2 = false;
	private bool spawnedDoor3 = false;
	public int NumberOfDoors;


	public Vector3 vDoor1 = new Vector3(-16, 2, 0);

	// Use this for initialization
	void Start () {
		randomDoor1 = Random.Range (0, NumberOfDoors + 1);
		Debug.Log ("Generated number for door 1 : " + randomDoor1);
		randomDoor2 = Random.Range (0, NumberOfDoors + 1);
		randomDoor3 = Random.Range (0, NumberOfDoors + 1);
	}
	
	// Update is called once per frame
	void Update () {
		if(randomDoor1 == randomDoor2)
			randomDoor2 = Random.Range (0, NumberOfDoors + 1);
		if(randomDoor1 == randomDoor3)
			randomDoor3 = Random.Range (0, NumberOfDoors + 1);
		if(randomDoor2 == randomDoor3)
			randomDoor3 = Random.Range (0, NumberOfDoors + 1);

		if (spawnedDoor1 = false) {
			GameObject door1 = (GameObject)Instantiate (Resources.Load ("scaryDoor1"));
			spawnedDoor1 = true;
			Debug.Log ("Spawned door1");
			Debug.Log ("scaryDoor" + randomDoor1);
		}
		if (spawnedDoor2 = false) {
			GameObject door2 = (GameObject)Instantiate (Resources.Load ("door" + randomDoor2));
			spawnedDoor2 = true;
		}
		if (spawnedDoor3 = false) {
			GameObject door3 = (GameObject)Instantiate (Resources.Load ("door" + randomDoor3));
			spawnedDoor3 = true;
		}
	}
}

Only important stuff:

	public bool spawnedDoor1 = false;

	
	// Update is called once per frame
	void Update () {
		if (spawnedDoor1 = false) {
			GameObject door1 = (GameObject)Instantiate (Resources.Load ("scaryDoor1"));
			spawnedDoor1 = true;
			Debug.Log ("Spawned door1");
		}

if (spawnedDoor3 = false)

You are assigning false into spawnedDoor3 here. The value of it is always false.

The result of a simple assignment expression is the value assigned to the left operand.

Try comparing the values instead

if (spawnedDoor3 == false)
//or shorter
if (!spawnedDoor3)