DW recently defrosted the freezer of our Norcold Model 82X. After this minor bit of irritation we set the panel to LP gas to speed the refridgeration of the unit and noted that the burner did light and remain in operation. The unit did not, however get cold (fins in the 'fridge did not become cold to the touch, etc) even after running throughout the night. In the AM we switched back to AC power and the 'fridge runs properly on AC ... Do not see any error codes nor any indication of critters in or about the burner and flue area. Looked through the Norcold pdf document and even Bryants web site and could find no mention of this specific instance ... Grrrrr. Were currently in NM with temps in the high 90's or low 100's, adequate Voltage/AMP's over the park power and an altitude of 4.5K feet.