Hood Vent Fan No Longer Working - UPDATE

[SouthpawHD]

My hood vent fan above the stove top randomly stopped working the other weekend. I have checked the main fuses, no luck. Also checked the switch on the fan and the wires are still connected. Inspected the fan and I see no visible issues with it.

Possible the fan just is done and I need a new one? If so, I have NO idea how to figure out what brand it is or anything like that.

Bought the rig new 2 years ago, so not like it is that old or anything.

Any thoughts and help on this would be appreciated.

[CavemanCharlie]

SouthpawHD wrote:
Thanks for all the help and pics. I ordered a motor and replaced it today and it wasn't the motor at all, it ended being the inline fuse. So I simply removed the fuse and called it good.

Thanks for letting us know that you found the source of the problem.

[SouthpawHD]

Thanks for all the help and pics. I ordered a motor and replaced it today and it wasn't the motor at all, it ended being the inline fuse. So I simply removed the fuse and called it good.

[SouthpawHD]

Thanks for the above pics, that helped a lot to locate the fuse!!

Took the motor off, of course, model number is almost impossible to read, but found a replacement motor on E Trailer (I think it'll work) and I am going to put in a new motor without the fuse.

[mobeewan]

Is it a Ventline

[dfm]

If the fan is finished consider replacing it with a 12 volt computer fan with a cfm rating of 180 or higher.
It's an easy modification and you will then have a quiet fan that you won't feel like an airplane is taking off in your trailer.

[wnjj]

Probably not so much the hot air but deadheading the fan made it pull more current and heat up.

[rconkin]

We bought our current 5er in May of 16 and rarely use the range vent. First time we did, it ran for about 10 minutes or so then quit. It was changed out when other warranty items were being done and sure enough, the first time I used it again quit after about 15 minutes again. Since we don't cook inside often I've just let it go. However last week while I was using the oven the carbon monoxide detector started going off so I thought I would try to fix it in case it was the fumes not being exhausted that was causing the detector to go off. There is a thermal fuse just before the motor that has blown as the motor will work when the wires are hooked up directly to it. I'm wondering what risks I'll run if I leave the thermal fuse out and just wire it up straight.

Now, being curious as to what caused it, I think I may have found the problem. Unknown to me there is a second vent flap inside the vent that can be locked in the closed position. I'm wondering now if it was closed and caused the fuse to blow since the hot air was not allowed to go out with the fan on.


second flap unlocked


second flap locked on the right side of photo


lock from outside where you would push it in


thermal fuse

[campigloo]

If you decide the motor is shot a replacement is probably available at your local appliance parts store. It’s likely a common little motor and cheap from a supplier other than a rv parts dept.

[SouthpawHD]

CavemanCharlie wrote:
Have you checked to see if something fell into the fan and is keeping it from turning ?

The blades turn freely, so I don't think anything is stuck.

But as another poster said, maybe not freely enough, so I'll grease it up.

[CavemanCharlie]

Have you checked to see if something fell into the fan and is keeping it from turning ?

[mike-s]

SouthpawHD wrote:
There is a light with it and the light works, but the light is on a separate switch.

The power source is almost ("never say never") always in common for the fan and light. So it's most likely that the issue is with the fan motor or wiring/switch.

[SouthpawHD]

I will check the voltage this weekend.

The fan has seen VERY limited use and has just been used only when cooking a handful of times. There is no grease, dirt, or grime anywhere near it.

There is a light with it and the light works, but the light is on a separate switch.

Perhaps to check the switch, I could exchange it with the light switch?

[westend]

Unless you are using the vent fan as a continual exhaust fan, they will rarely fail. Stove vent fans see very little hourly use. Yes, they operate in a greasy, smokey environment so bushing or bearing maintenance can bring good results.

#1 suspect, IME, would be the switch. Verify power present, ground polarity continuity, and correct operation.

[wnjj]

I once fixed a residential hood fan that had a failed $1 thermistor that was taped up against the motor coils. An ohm meter across the disconnected motor wires showed open circuit.