Humming noise under outdoor kitchen!

[Mhamons]

We came home from being gone for two days and there is a loud persistent humming coming from underneath the outdoor kitchen. I turned the heater off water off everything off except for electric I can't figure out what the noise is any ideas we have a 2020 grand design solitude 3740bh. Nothing obvious underneath. I'm worried since I'm not very handy.

[Country Campers]

I would turn off the electric to see if it goes away then. I am not seeing anything that should cause a humming noise. The things that would be under there are the gas for the stove , electric for the outside fridge.

Welcome to the forum, hope someone here has heard of this before.

Brian

[howson]

We came home from being gone for two days and there is a loud persistent humming coming from underneath the outdoor kitchen. I turned the heater off water off everything off except for electric I can't figure out what the noise is any ideas we have a 2020 grand design solitude 3740bh. Nothing obvious underneath. I'm worried since I'm not very handy.

I agree with Brian--try unplugging the small electric refrigerator. If that doesn't work turn off all power.

I hope you post the results!

[Country Campers]

Another thought , being as this is a bunk house model maybe the kids have left a toy stuck in somewhere inside that is making a noise or vibrating.

Brian

[kckarosich]

First time on this forum. We bought a NTU 2019 3740BH in March. Had a similar thing happen. Found out it was the pump under the outside kitchen sink. I hit the manual switch on the pump a couple times and it went away.

[howson]

First time on this forum. We bought a NTU 2019 3740BH in March. Had a similar thing happen. Found out it was the pump under the outside kitchen sink. I hit the manual switch on the pump a couple times and it went away.

If you get a chance can you take a picture of the "pump" and "manual switch" referenced and post the pics here, please? None of the drawings for your unit show a pump (or sump) near the outside kitchen. The unit's main water pump shows being somewhere between the master bathroom toilet and shower.

TIA!

Edit: Let me clarify that I'm not doubting what you found--there are many errors found in these drawings. My purpose in asking for the information is to have one more piece of information here for other owners of your trailer. Thanks for understanding!

Howard

BTW--welcome to the forum! Check out the New Members welcome letter when you get a chance: https://gdrvowners.com/forum/main-fo...to-new-members

[kckarosich]

Howard,

Sorry it took me so long. First picture shows the sump pump. The small white knob is the manual switch.

[TucsonJim]

Wow - I had no idea this model was equipped like that. Thanks for sharing the photos.

Jim

[Country Campers]

Howard,

Sorry it took me so long. First picture shows the sump pump. The small white knob is the manual switch.

It also looks like on that model the slide controllers , or at least one of them , is to the left of that sump. Correct?

Brian

[ShaneGreen17]

Same setup on the 2020 3950BH, sump and over ride switch just to the left of the sink. The manual turn socket to the left of The sump is to drop down the spare tire, I believe...

[kckarosich]

Yes Brian. Also have one in the front compartment.

[Mindy]

Exactly the info that I needed! Thanks a bunch!