Have a 2006 3655RD Big Horn and when I turn on the "Propane" water heater switch,the red light on the panel remains on. On my Motor Home, that meant the unit had failed to light, normal operation was "light on while igniting, light off when lit" Since this is completly backward and I cant find anything about it in the manual, just thought I'd ask. Is it normal and proper for the red light to be on while using the propane water heat? Thanks