Tank vent covers are typically round and about 2 inches in diameter.
Rv roof vent fan not working.
The next step is to remove the air conditioning unit from the roof as it will be much easier to work with.
Rv ac fan not working.
Roof vents with fans like the maxxfan roof vent w 12v fan ma00 04000k do not have a fuse anywhere in the fan itself.
The blades are out of balance the motor doesn t perform well or the blower doesn t put out the air flow you need.
You will want to use a circuit tester like ptw2993 to see if there is power getting to the fan.
There are a lot of reasons why your rv ac fan does not work.
If the vent cover is missing look into the pipe using the flashlight to check for leaves and bird or rodent nests.
Sometimes just pushing down on the switch and releasing it to let is snap back will cause the conection to be made.
Remove the screws that hold the ac unit to the rooftop of your rv and set them aside.
Next you can check the fuse of the fan to make sure it is not blown.
Try tightening the nut on upper end of the switch.
Fantastic fans have a problem with the switch that shuts off the fan when the lid is closed.
Inspect the tank vent cover and caulking for damage.
Climb the ladder to the rv roof.
If it is not the fuse i would suspect the switch.
There also may be problems with the other ac parts that help make the fan run.
It can become loose and lose the ground.
But not a problem with the remote control fantastic vent fans.
Then you will need to observe whether there is an electrical connector and if there is what sort of connection there is.
Those are just some of the reasons why your rv ac fan isn t working.
You can try using jumper wires to the vent wiring that are run to known ground and power to see if that works.