Powered by Blogger.
We are saddened to announce the passing of Gary Bunzer on April 17, 2020. We hope the RV Doctor website will continue to provide helpful information for you. Thank you for your interest and support for the RV Doctor - Debbie, Heather and Gretchen

Saturday, October 24, 2009

Slideout Blows Fuse

While closing my slides I found the main (30A) fuse blown. I returned home and replaced the fuse and set up the coach and plugged into my AC source and opened up both of them. We had some bad weather coming through our area so I went out to close the slides and the main fuse was blown again! I replaced the fuse after opening the slides and it was okay. My book doesn't show an electrical diagram for the circuits and I am lost. Neither time could I smell any type of smell indicating bad wiring.
Randy, (Lake Charles, LA)

Couple of things to check Randy. Be sure you have a healthy battery in the system. A sulfated battery may have some internal arcing that could cause a heavy fuse like that to blow. Also, look for any resistance to the movement of either slide. Check the slide mechanism closely for corrosion, binding, rust, debris, etc. Any perceived drag on the movement could cause the fuse to blow. Lastly, check the battery wiring connections, especially on the ground side of that circuit.

I’m not aware of any inherent deficiencies with your coach, but in some cases an undersized ground cable anywhere in the circuit could cause overheating which could also blow the fuse. You can eliminate the slide mechanism and the mechanics of the system by using a fresh battery connected directly to the slide circuit. If it works fine independent of the coach, the problem is in the wiring. If it still blows fuses, chances are there is a mechanical binding in the components somewhere.


In all instances, every effort is made to ensure the correctness of all content on the RV Doctor Website. It is imperative that if you choose to follow any instructions or procedures outlined on any page of this website, you must first satisfy yourself thoroughly that neither personal nor product safety will be compromised or jeopardized.

All rights reserved.

If you are in doubt or do not feel comfortable about a procedure, do not continue. Simply call your local RV service facility and make an appointment with them. The advice, recommendations and procedures offered by the RV Doctor are solely those of Gary. They do not necessarily reflect the opinions, procedures and recommendations of our sponsors or advertisers.