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Old 11-29-2014, 09:01 PM   #1
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What was that noise?

Just spent a wonderful week camping in the new AS at San Augustine COE park in the Texas piney woods All went really well (especially the campfire Thanksgiving turkey!) but we were awakened early this morning by a loud bang. At first I thought it was just an acorn falling on the roof, then heard the same sound again about an hour later. Sounded like a loud pop coming from the front left side (near the water heater maybe). The water heater was not on. Propane was on but furnace wasn't running at the time. It happened again after we woke up and it was definitely not acorns! Sounded almost like metal popping. Any ideas what could have caused the sound?
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Old 11-29-2014, 09:19 PM   #2
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Some AS units have an issue with the bellypan 'tin canning' when temperature or stress in the belly pan changes. There are some other threads on this issue.


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Old 11-29-2014, 11:04 PM   #3
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Was anyone moving in the AS at time of the sound? Was it a metallic sound or percussion?
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Old 11-29-2014, 11:06 PM   #4
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Nobody was moving. We were asleep the first time it happened. It was a loud pop, not ringing or rumbling.
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Old 11-30-2014, 06:07 AM   #5
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Sometimes the Aluminum skin on the outside will change --or as it changes temp, will pop. Just depends on your skins age I guess. But thats what this one does - and not all the time...Just depends on the weather outside.
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Old 11-30-2014, 07:56 AM   #6
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If the sound was coming from near the water heater, it could have BEEN the water heater making that sound. Pressure relief valve is one possibility. Another possibility is heat from the water heater cause the "oil-canning" effect that others described. After all, the water heater comes on and goes off according to the thermostat, so there is heating and cooling happening all the time.
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Old 11-30-2014, 09:02 AM   #7
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Try leaving water heater off during the night. As a routine we always turn ours off and the first person up turns it back on. We sleep better (No jet sound) and save propane.
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Old 11-30-2014, 09:17 AM   #8
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We never turned the water heater on. Just the furnace, but it wasn't running at the time.
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Old 11-30-2014, 09:19 AM   #9
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Quote:
Originally Posted by Protagonist View Post
If the sound was coming from near the water heater, it could have BEEN the water heater making that sound. Pressure relief valve is one possibility. Another possibility is heat from the water heater cause the "oil-canning" effect that others described. After all, the water heater comes on and goes off according to the thermostat, so there is heating and cooling happening all the time.
The OP said the water heater was not on.
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Old 11-30-2014, 09:29 AM   #10
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Missed that "reading class" and some other one .
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Old 11-30-2014, 10:42 AM   #11
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The OP said the water heater was not on.
Missed that. Thanks for the correction. Hopefully that's my only mistake for the day! (But law of averages says it isn't, darn it!)
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Old 11-30-2014, 11:37 AM   #12
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If the sun was overhead enough to beat on it in the Texas warmth I would look to the aluminum flexing. Overnight cold on one side and bright sunlit warmth on the other. Check around to see if any rivets may have popped. Hopefully nothing more than a new trailer flexing it's skin a bit. We did not get our trailer NEW so we've not had such experiences.
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Old 11-30-2014, 11:43 AM   #13
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Another reason to sleep with ear plugs.

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Old 12-01-2014, 09:42 AM   #14
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As the sun comes up and the temperatures increase the trailer makes popping sounds as the aluminum is heating up and expanding.
My wife will ask, "What was That?"
I'll reply, "Nothing, really. The sun is warming up the metal and it is expanding."
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