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Old 03-28-2016, 09:10 PM   #29
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No.
Nothing was on-
Electric or gas-
Unless the refrigerator will run with no 12 volt DC power being supplied-


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Old 03-28-2016, 09:33 PM   #30
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No.
Nothing was on-
Electric or gas-
Unless the refrigerator will run with no 12 volt DC power being supplied-


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I was suggesting you try to experiment to see if you can cause the sound again. Maybe those new fridges are able to switch over to gas for a bit. Don't know.
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Old 03-28-2016, 10:24 PM   #31
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Wellllllll.. here goes...
The folks are telling you, the only way for the regulator to 'hum'/vibrate... is flow.. at just the right volume to cause oscillation of the diaphragm inside the regulator...

I had this happen on several propane devices:
1- propane burner (crawfish boiler)... turns out there was a slow leak at the control valve
2- propane BBQ pit ... was a leaky control valve... another time, the 'orifice' was restricted... and set the harmonics.... replaced the BBQ pit once and replaced the valve the next time.
3- a lot of the 'odorant' had found it's way into the supply lines... then found their way into the control(valves).. clean lines/devices.. even the regulator..
4- a 'solenoid' valve was sticking 'open'... jussssst a bit... Replaced the solenoid.
5- a bad regulator, venting propane to atmosphere..slowly.. and you can smell it, if the wind blows the right way... soaping down ALL of your connections is a minimum. You may have picked a crease in the propane line from road debris... and if leaking outside the AS, so, you won't get your LP detector to fire.

Now.. what if... the fridge went from on/off/on... with AC and DC power changing, did the low voltage cause a logic problem with the Fridge control panel causing the solenoid valve to oscillate or leak..?

These are not things to 'dismiss'...PLEASE have the system 'LEAK CHECKED'!!!
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Old 03-29-2016, 05:27 AM   #32
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Why would the noise stop when the batteries are hooked up?


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Old 03-29-2016, 05:29 AM   #33
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Never smelled anything outside or inside.
Propane detector never went off.
I was wondering if the noise continued until the lines themselves were full and then stopped.


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Old 03-29-2016, 12:25 PM   #34
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Ok, let's back up. I thought you were occupying the rig and the propane system was pressurized. But you wonder if the noise occurred until the lines themselves were full. So had the propane system been off before you did your work and you had opened the tanks when you got there?
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Old 03-29-2016, 12:56 PM   #35
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No.
Just never noticed the noise until I disconnected power and removed batteries.
Then the noise stopped when I reconnected batteries. I wonder if something about the gauges could cause the noise. Seems like the gauges would have to be pressurized to get a reading or to show the propane level on the monitor inside the trailer.
Couldn't decide if it was the gauges or regulator before it stopped and I haven't investigated any further.
Just thought someone here might have lived the same thing at some point in life-
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Old 03-29-2016, 04:40 PM   #36
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No.
Just never noticed the noise until I disconnected power and removed batteries.
Then the noise stopped when I reconnected batteries. I wonder if something about the gauges could cause the noise. Seems like the gauges would have to be pressurized to get a reading or to show the propane level on the monitor inside the trailer.
Couldn't decide if it was the gauges or regulator before it stopped and I haven't investigated any further.
Just thought someone here might have lived the same thing at some point in life-
Regarding the gauges on the tanks, unless they have changed them, they are float gauges. Not likely the source of your noise.
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Old 03-29-2016, 04:47 PM   #37
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So only thing left to make noise is the regulator?

There is an electrical connection to the propane tank gauges- I assume to the readout inside the trailer-
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Old 03-29-2016, 08:52 PM   #38
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There is an electrical connection to the propane tank gauges- I assume to the readout inside the trailer-
Yup. Sounds the same as on my '98. That sending unit does measure the float position and transmits it to the readout inside.
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Old 04-02-2016, 09:44 AM   #39
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