Check all fuses. Might have one at or near battery (might be Circuit breaker that can be reset?) and/or one at the inverter itself.
Do you have the door switch on USE near the door? Do you have a "inverter switch" to turn it on and off as needed? If so any error codes or lights (mine has a flashing red light if something is wrong) on or next to switch?
Does everything else 12v work Okay (lights, water pump etc). Check house batteries.... are they very low or defective?
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor