[kbowling]

We are brand new owners of a 2017 Montana outside Memphis, TN. We bought this to live in on our property while our house is being built and eventual travel. We thought we were doing all the correct things... professional electrical installed, septic, cover, etc. Extra propane tanks filled just in case. NEVER would we expect a week of below freezing with so much snow. And local stores out of propane but we think we have enough to get us through Saturday when it should warm up. We do not have water in the fresh tank nor the water pump on as we are on well water source. Well water source to RV is turned off while offsite. All faucets opened/drained upon leaving. Luckily, we do not live in the RV just yet but have been running the heat via propane set at about 50-60 every night.

To our horror, we went out yesterday to change the propane tanks out and our water would not come on inside. Heated water hose intact, all other systems seemed to be ok. There was an error code on the instant hot water gauge but cleared with one touch.
After further inspection, one of our black tanks seem to be frozen (via visual inspection down the hole). We were able to do a black tank dump but unable to pull the handle on the grey tank. We are terrified about what we are about to experience when the thaw happens in a couple of days. Any suggestions from the experienced members are appreciated. FYI, our panel showed tanks only 1/3 full before this freeze and remains this way. What should we look for and inspect first? Anything we should do while everything is frozen to help prevent damage upon thaw?
Thanks in advance!