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Old 03-21-2018, 05:02 AM   #1
Junior Member
Join Date: Aug 2016
Posts: 18
Expansion / Contraction of A/C - Heat Pump Popping????

We have a 2017 31SL and have a noise that I can only describe as "large drops of rain" hitting the roof. The sound that the large scattered rain drops make, just before a really hard rain storm arrives. We hear it when the heat pump shuts off. The noise continues for quit a few minutes afterwards. We think it started last year, but it was much quieter and more subdued, more like the sound of a squirrel walking around on the roof and we noticed it when the A/C would cut off.

We are using the RV this week during our spring break. The weather is cool, lows in the upper 30's/low 40's, and we are running the units in heat mode and the noise is much louder, like big rain drops. I would guess that it is related to expansion and contraction of something in the roof, but what? Is anyone else having this issue? Or is this just our unit? It's becoming quite annoying.

For additional info, we are weekender's, if that's a word, and this is the first week out this year. When we are not using the RV it is stored in our shop which is not climate-controlled.
2017 31SL Tan and Burgandy w/Urban Clay interior, disc brakes, gen prep, 2 Uniguard awnings
2016 Chevy 3500 CC LTZ DRW 4x4
Bob & Mary is offline   Reply With Quote
Old 03-21-2018, 06:28 AM   #2
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Join Date: Feb 2015
Posts: 728
That sound is the water running out of Heat pump. Ours makes the same noise has since new.

2015 RL38
2018 FORD F350 SRW
RWJSIM2003 is offline   Reply With Quote

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