How do I change the heater fan speed control in a

On the back of the control panel there is a plastic connector that plugs into the fan speed control. You can unplug it and use a meter to find incoming (hotwire) take a jumper or a 6 inch peice of wire and insert it into the spade where the hot wire is wired to. Take the other end of the wire and insert it into the 1st spade in the plastic connector next to the hot wire spade this will let you know that the fan will run at the selected speed. Then pull the test wire out and plug it into the next spade and so on and so on. I am sure your fan will respond step by step , fan speed 1 then 2 and then 3. After you make this test you will know that your fan is ok. You will just have to replace the plastic connector with new spades in it. You should see some evidence of over heating on the old connector. It may be that you only need to unsnap the connector and then reconnet it and it will probably work fine. It has proberly just become partially unpluged. All the other info that I gave you early on was just to trouble shoot it. mike
micmor68@gmail.com