Just took our factory delivery (a Great Experience…) & stayed at the Oliver campground to spend a night. The following morning, the CP-Panel had the triangle/! icon lite & the water heater icon/information was missing as well. The error code W255 W was displayed when scrolling/selecting the triangle / Icon… An initializing of ‘reset’ resulted in No change…still no water heater info on display.
The only ‘problem’ was the 3-position on/off/on switch on the water heater was in the ‘off’ position, so selecting ‘ON’ & then repeating the reset/initializing process restored the water info on the panel - ‘Problem Solved’