My 5th wheel has two tanks with one on each side. The main regulator and changeover valve is on the left and a red regulator is on the right. One tank is full, the other is roughly half, and a third tank is empty.
So now for the issue....
When the third tank was on the left and emptied it automatically switched, as it should, to the right tank. The system ran off the right tank with no issues and a new full tank was placed into the left position.
Once the right tank reached about half, propane began leaking from the furnace and either the regulator or tank would hum or oscillate when propane was used. (Yes things were evacuated before testing, no need for safety police comments!)
Switch over to the full tank on the left and the issue goes away; no hum and no leak from the furnace.
Now it gets weird...
Swap the position of the tanks so that the half full tank is on the left and the full is on the right. Run off the left and there is no leak from the furnace but there is a slight oscillation.
Switch to the full tank now on the right and there is no leak from the furnace but there is a pronounced oscillation/hum/ring.
My current theory is that there is something wrong with the half full tank and it also damaged the red regulator on the right side. I am leaning to replace the right side regulator and have the half full tank recovered, inspected, properly purged, and refilled if it checks out good.
Figured I'd reach out here to see if there might be a different view of it.
So now for the issue....
When the third tank was on the left and emptied it automatically switched, as it should, to the right tank. The system ran off the right tank with no issues and a new full tank was placed into the left position.
Once the right tank reached about half, propane began leaking from the furnace and either the regulator or tank would hum or oscillate when propane was used. (Yes things were evacuated before testing, no need for safety police comments!)
Switch over to the full tank on the left and the issue goes away; no hum and no leak from the furnace.
Now it gets weird...
Swap the position of the tanks so that the half full tank is on the left and the full is on the right. Run off the left and there is no leak from the furnace but there is a slight oscillation.
Switch to the full tank now on the right and there is no leak from the furnace but there is a pronounced oscillation/hum/ring.
My current theory is that there is something wrong with the half full tank and it also damaged the red regulator on the right side. I am leaning to replace the right side regulator and have the half full tank recovered, inspected, properly purged, and refilled if it checks out good.
Figured I'd reach out here to see if there might be a different view of it.
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