Do you have any paperwork indicating the size ( watts ) of the inverter ?
Some RVs the inverter is only attached to the TV ( 600 watts ); to power multiple outlets and perhaps a microwave would require , 1500>2000 watts .
The bigger units are mounted close to the coach batteries to keep the 12 volt power supply cables short . Large inverter would be 12 "x 12 "x 18"
An inverter of any size needs coach batteries in good condition to function .
EDIT : Just back from looking for specs , I can't find 2006 specs , but the 2008 283GTS doesn't list an inverter in the specs only a converter/charger , couldn't locate an option list either. Are you sure you've got an inverter ?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.