dhaig Posted May 16, 2022 Share Posted May 16, 2022 My wife and I pickup up our LEII, Hull 990 on 2/17/22. We spent the nearly a week at or near Oliver's operations in Hohenwald shaking down the systems before returning to our home in Dallas. Our Truma water heater worked as expected and we marveled at how it was "just like out tankless water heater at home". I winterized the trailer upon our return home, including installing the antifreeze option for the Truma water heater. Our LEII spent the next 6-7 weeks in our driveway while I made additions to it. On April 23, I moved the trailer to an enclosed storage facility approximately 30 miles north. We have three Lithionics batteries, for which I followed the recommendation to turn OFF the batteries during storage for 30 days or less. On approximatly May 8, I retrieved the trailer from the storage facility to prepare for departure on May 11 to South Carolina. Everything appeared to be in order prior to our departure, although I did NOT test the Truma water heater. After a full day of travel, late on the night of May 11 I discovered the Truma water heater would not operate. We had two full 20 lb. propane tanks, the stove easily lighted verifying the flow of propane. I verified the power switch on the Truma unit was ON, however, the interior control located to the right of the pantry did NOT display an amber light. No hot water. I contacted OTT Service the next day and was advised to check the fuse, which proved to be OK. I was also advised to check for 12 volts DC at the rear of the Truma remote control. Today I removed the access portal from the forward interior wall of the pantry to discover the Truma remote is apparently epoxied to the hull. A black cable with an RJ11 type telephone connector plugs into the rear of the Truma remote, making testing for 12 VDC difficult. I again called OTT Service, and after four hours have still not received a call back. I searched Google for "Truma service near me" (now Paris Mountain State Park, near Greenville, SC) and found the Truma Dealer Partner Locator on Truma.net. The first listing was for Retromodern Campers, in Pickens, SC. I phone them and spoke with Scott Whitmire, who indicate his company had recently become an authorized servicer for Truma and he had been installing Truma units in refurbished trailers, many from the 1940s and 1950s. After describing the symptoms of our Truma unit, Scott indicated he had encountered the same symptoms twice, once as recently as two weeks ago. He said he would call Truma for guidance. In about 10 minutes I received a return call from Scott, saying he had spoken with Truma and received the following directions: Power ON the Truma unit at the main power switch. On the interior mounted remote control, turn the dial to OFF Wait a few seconds, then turn the power to ON at the remote control The remote control unit should now display the amber light on the dial. I was pleasantly surprised the amber light came on. I went outside to the external shower (not wanting to fill the gray tank) and ran the water for less than a minute, when hot water began to flow. I then verified hot water was available at both the bathroom and kitchen faucets. Scott said as long as the power is not shutoff to the Truma unit, it should work just fine on the next trip. I point out that I expect it to be common practice for Oliver owners, many of whose whose trailers are equipped with lithium batteries, to power the batteries OFF between trips. This will necessitate performing the Truma re-boot process described above after each storage period in which the lithium batteries are turned OFF. I can find no reference to this re-boot process In the Truma section of the 2022 Oliver Optional Features Component Manual. I hope others with lithium batteries and Truma water heaters will recall call this procedure after they have turned OFF their lithium batteries during storage. 6 6 North Texas | 2022 LEII, Hull #990, delivered 2/17/22 | 2014 BMW X5 35d Link to comment Share on other sites More sharing options...
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