2008 Itasca Suncruiser - True-Air Heat Pump Fan Noise

I own a air conditioning company and have never refused to have my technitions work on RV, Repaired a few for my customers in the past. Actually, your basement air isn't much different than a heat pump for a mobile home. Others are right, your problem could be as simple as a loose or vibrating part or as serious as bad fan motor bearings but still easily repaired. Good luck.

427435 wrote:

Pangaea Ron wrote:
Thanks Silverback

I'm not sure which fan yet, now that the rain has stopped, I'll start poking around. I haven't found a good schematic drawing of the heat pump yet, only wiring diagrams.

It's not that hard to slide the unit part way out-----and you may just have to take the side cover off. To slide it out, take the side cover off and take out several screws in the bottom. There are also several screws that connect a duct to the unit. These screws require laying under the rear of the MH to access.

The electrical cables will still be attached, when you slide it part way out, and you can turn the unit on and see what is causing the noise.

There was a lot of noise from mine when I first got it. I took the side cover off and found one of the A/C tubes touching the fan housing. I bent the tube a bit and it has been quiet for 8 years now.

Thanks, I'll try bloodying my knuckles tomorrow after work.

Pangaea Ron wrote:
Thanks Silverback

I'm not sure which fan yet, now that the rain has stopped, I'll start poking around. I haven't found a good schematic drawing of the heat pump yet, only wiring diagrams.

It's not that hard to slide the unit part way out-----and you may just have to take the side cover off. To slide it out, take the side cover off and take out several screws in the bottom. There are also several screws that connect a duct to the unit. These screws require laying under the rear of the MH to access.

The electrical cables will still be attached, when you slide it part way out, and you can turn the unit on and see what is causing the noise.

There was a lot of noise from mine when I first got it. I took the side cover off and found one of the A/C tubes touching the fan housing. I bent the tube a bit and it has been quiet for 8 years now.

the silverback wrote:
Is it the fan that cools the MH or the fan that cools the heat exchanger and blows air on the ground outside the MH? If it the outside fan the impeller maybe loose and can easily be tighten with a long Allen wrench.

It's the same unit----------one motor and two blower housings.

Thanks Silverback

I'm not sure which fan yet, now that the rain has stopped, I'll start poking around. I haven't found a good schematic drawing of the heat pump yet, only wiring diagrams.

Is it the fan that cools the MH or the fan that cools the heat exchanger and blows air on the ground outside the MH? If it the outside fan the impeller maybe loose and can easily be tighten with a long Allen wrench.