Refrigerator cooling fan modification
I have a 2014 Flagstaff Classic Ultra Lite Travel Trailer with the Dometic refigerator on a slide. Therefore it has to have a cooling fan outside the refrigerator since there is no ceiling vent to allow the built up heat to escape. The fan makes a horrendous noise as it is attatched to the refrigerator frame just below the cooling fins. Replaced the fan under warranty with another noisy fan. Dometic says it can do nothing more. The problem is the harmonic resonance created by the vibrating fan on its mounting. It is very annoying inside and outside of the trailer. It interfered with TV watching or sleeping. Moving or insulating the mounting would not solve the efficiency problem. The fan does not move much air at all, if any, therefore it runs long and often. Here is a modification that was done on the upper outside vent to the refrigerator. It would work for any refrigerator that doesn't cool well too. It really moves the air now and is no louder than a house refrigerator. I can live with that. Much more efficient. The first picture is the original single fan that came with the unit attached to the frame with a metal bracket. The source of the problem. The modification was accomplished with two fans and aluminum shroud over the vent cover. It is still thin enough to fit into its original housing without modifying anything else. Simple to fabricate with aluminum and screws. Wired into the existing wiring with quick disconnect attachments for easy removal. The fans draw 0.6 amps each. The thermostat turns the fans on when the temp reaches 150 degrees.
Jeff, Molly, and our 3 rescued canines..Abby, Presley, and Brad the Greyhound.
2014 Forest River Classic Super Lite 832IKBS
2013 GMC Sierra